Make remember checkboxes more subtle and checked by default

- Remember checkboxes now default to checked for better user experience
- Reduced visual prominence with smaller size, lighter colors, and lower opacity
- Users get convenience by default while still being able to opt out

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

.dockerignore

@@ -1,6 +1,9 @@
 # Build artifacts
 target/
-dist/
+frontend/dist/
+backend/target/
+# Allow backend binary for multi-stage builds
+!backend/target/release/backend
 
 # Git
 .git/
@@ -21,8 +24,18 @@ Thumbs.db
 
 # Documentation
 README.md
-*.md
 
-# Docker
-Dockerfile
-.dockerignore
+# Development files
+CLAUDE.md
+*.txt
+test_*.js
+
+# Database files
+*.db
+calendar.db
+
+# Test files
+**/tests/
+
+# Migrations (not needed for builds)
+migrations/

.gitea/workflows/docker.yml

@@ -0,0 +1,34 @@
+name: Build and Push Docker Image
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to Docker Registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ secrets.DOCKER_REGISTRY }}
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          tags: |
+            ${{ secrets.DOCKER_REGISTRY }}/calendar:latest
+            ${{ secrets.DOCKER_REGISTRY }}/calendar:${{ github.sha }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max

.gitignore

@@ -16,4 +16,15 @@ dist/
 # Environment variables (secrets)
 .env
 .env.local
-.env.*.local
+.env.*.local
+
+# Development notes (keep local)
+CLAUDE.md
+
+data/
+
+# SQLite database
+*.db
+*.db-shm
+*.db-wal
+calendar.db

2025-08-30-conversation.txt

@@ -1,563 +0,0 @@
-╭───────────────────────────────────────────────────╮
-│ ✻ Welcome to Claude Code!                         │
-│                                                   │
-│   /help for help, /status for your current setup  │
-│                                                   │
-│   cwd: /home/connor/docs/projects/calendar        │
-╰───────────────────────────────────────────────────╯
-  ⎿  Referenced file src/services/calendar_service.rs
-  ⎿  Referenced file src/app.rs
-  ⎿  Referenced file src/components/create_event_modal.rs
-  ⎿  Read src/models/mod.rs (5 lines)
-  ⎿  Read src/services/mod.rs (3 lines)
-  ⎿  Todo list read (6 items)
-
-● Read(src/services/calendar_service.rs)
-  ⎿  Read 50 lines (ctrl+r to expand)
-
-● Read(src/components/create_event_modal.rs)
-  ⎿  Read 100 lines (ctrl+r to expand)
-
-● Read(src/components/create_event_modal.rs)
-  ⎿  Read 50 lines (ctrl+r to expand)
-
-● Now I need to create a VEvent-based create_event function and implement the conversion from EventCreationData. Let me implement this:
-
-● Update(src/components/create_event_modal.rs)
-  ⎿  Updated src/components/create_event_modal.rs with 48 additions                                                                                                                                                      
-       144    }
-       145    
-       146    impl EventCreationData {
-       147 +      pub fn to_create_event_params(&self) -> (String, String, String, String, String, String, String, bool, String, String, Option<u8>, String, String, String, String, String, Vec<bool>, Option<String>) {
-       148 +          (
-       149 +              self.title.clone(),
-       150 +              self.description.clone(),
-       151 +              self.start_date.format("%Y-%m-%d").to_string(),
-       152 +              self.start_time.format("%H:%M:%S").to_string(),
-       153 +              self.end_date.format("%Y-%m-%d").to_string(),
-       154 +              self.end_time.format("%H:%M:%S").to_string(),
-       155 +              self.location.clone(),
-       156 +              self.all_day,
-       157 +              match self.status {
-       158 +                  EventStatus::Tentative => "TENTATIVE".to_string(),
-       159 +                  EventStatus::Confirmed => "CONFIRMED".to_string(),
-       160 +                  EventStatus::Cancelled => "CANCELLED".to_string(),
-       161 +              },
-       162 +              match self.class {
-       163 +                  EventClass::Public => "PUBLIC".to_string(),
-       164 +                  EventClass::Private => "PRIVATE".to_string(),
-       165 +                  EventClass::Confidential => "CONFIDENTIAL".to_string(),
-       166 +              },
-       167 +              self.priority,
-       168 +              self.organizer.clone(),
-       169 +              self.attendees.clone(),
-       170 +              self.categories.clone(),
-       171 +              match self.reminder {
-       172 +                  ReminderType::None => "".to_string(),
-       173 +                  ReminderType::Minutes15 => "15".to_string(),
-       174 +                  ReminderType::Minutes30 => "30".to_string(),
-       175 +                  ReminderType::Hour1 => "60".to_string(),
-       176 +                  ReminderType::Hours2 => "120".to_string(),
-       177 +                  ReminderType::Day1 => "1440".to_string(),
-       178 +                  ReminderType::Days2 => "2880".to_string(),
-       179 +                  ReminderType::Week1 => "10080".to_string(),
-       180 +              },
-       181 +              match self.recurrence {
-       182 +                  RecurrenceType::None => "".to_string(),
-       183 +                  RecurrenceType::Daily => "DAILY".to_string(),
-       184 +                  RecurrenceType::Weekly => "WEEKLY".to_string(),
-       185 +                  RecurrenceType::Monthly => "MONTHLY".to_string(),
-       186 +                  RecurrenceType::Yearly => "YEARLY".to_string(),
-       187 +              },
-       188 +              self.recurrence_days.clone(),
-       189 +              self.selected_calendar.clone()
-       190 +          )
-       191 +      }
-       192 +  }
-       193 +  
-       194 +  impl EventCreationData {
-       195        pub fn from_calendar_event(event: &VEvent) -> Self {
-       196            // Convert VEvent to EventCreationData for editing
-       197            // All events (including temporary drag events) now have proper UTC times
-
-● Now I need to fix the app.rs event creation callback:
-
-● Read(src/app.rs)
-  ⎿  Read 20 lines (ctrl+r to expand)
-
-● Read(src/app.rs)
-  ⎿  Read 50 lines (ctrl+r to expand)
-
-● Update(src/app.rs)
-  ⎿  Updated src/app.rs with 23 additions and 2 removals                                                                                                 
-       329                            String::new()
-       330                        };
-       331                        
-       332 -                      // TODO: Fix event creation after V2 API removal
-       333 -                      let create_result: Result<(), String> = Err("Event creation temporarily disabled during VEvent migration".to_string());
-       332 +                      let params = event_data.to_create_event_params();
-       333 +                      let create_result = _calendar_service.create_event(
-       334 +                          &_token,
-       335 +                          &_password,
-       336 +                          params.0,  // title
-       337 +                          params.1,  // description
-       338 +                          params.2,  // start_date
-       339 +                          params.3,  // start_time
-       340 +                          params.4,  // end_date
-       341 +                          params.5,  // end_time
-       342 +                          params.6,  // location
-       343 +                          params.7,  // all_day
-       344 +                          params.8,  // status
-       345 +                          params.9,  // class
-       346 +                          params.10, // priority
-       347 +                          params.11, // organizer
-       348 +                          params.12, // attendees
-       349 +                          params.13, // categories
-       350 +                          params.14, // reminder
-       351 +                          params.15, // recurrence
-       352 +                          params.16, // recurrence_days
-       353 +                          params.17  // calendar_path
-       354 +                      ).await;
-       355                        match create_result {
-       356                            Ok(_) => {
-       357                                web_sys::console::log_1(&"Event created successfully".into());
-
-● Bash(cargo check)
-  ⎿      Checking calendar-app v0.1.0 (/home/connor/docs/projects/calendar) 
-         Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.52s
-
-● Create event functionality has been successfully restored! The implementation:
-
-  1. Added to_create_event_params() method to EventCreationData that converts the structured data into the string parameters expected by the existing create_event function
-  2. Fixed the app.rs event creation callback to use this conversion method instead of the temporary disabled functionality
-  3. All code compiles successfully with no errors
-
-  The create event modal will now work with VEvent architecture while maintaining compatibility with the existing CalDAV backend API.
-
-> It still fails with this message: Failed to create event: Request failed with status 400: {"error":"Invalid start date/time: Invalid time format: 09:30:00. Expected HH:MM","status":400}
-
-● The server expects time format HH:MM but we're sending HH:MM:SS. Let me fix the time formatting:
-
-● Update(src/components/create_event_modal.rs)
-  ⎿  Updated src/components/create_event_modal.rs with 2 additions and 2 removals
-       149                self.title.clone(),
-       150                self.description.clone(),
-       151                self.start_date.format("%Y-%m-%d").to_string(),
-       152 -              self.start_time.format("%H:%M:%S").to_string(),
-       152 +              self.start_time.format("%H:%M").to_string(),
-       153                self.end_date.format("%Y-%m-%d").to_string(),
-       154 -              self.end_time.format("%H:%M:%S").to_string(),
-       154 +              self.end_time.format("%H:%M").to_string(),
-       155                self.location.clone(),
-       156                self.all_day,
-       157                match self.status {
-
-● Fixed! The time format now uses %H:%M instead of %H:%M:%S to match the server's expected format.
-
-> Ok, it's pretty close, but the frontend needs to handle the conversion from localtime to utc before sending it to the backend
-
-● You're right! The frontend needs to convert local time to UTC before sending to the backend. Let me add timezone conversion to the to_create_event_params method:
-
-● Read(src/components/create_event_modal.rs)
-  ⎿  Read 10 lines (ctrl+r to expand)
-
-● Update(src/components/create_event_modal.rs)
-  ⎿  Updated src/components/create_event_modal.rs with 1 addition and 1 removal     
-       1    use yew::prelude::*;
-       2    use web_sys::{HtmlInputElement, HtmlTextAreaElement, HtmlSelectElement};
-       3 -  use chrono::{NaiveDate, NaiveTime};
-       3 +  use chrono::{NaiveDate, NaiveTime, Local, TimeZone, Utc};
-       4    use crate::services::calendar_service::CalendarInfo;
-       5    use crate::models::ical::VEvent;
-       6    
-
-● Update(src/components/create_event_modal.rs)
-  ⎿  Updated src/components/create_event_modal.rs with 13 additions and 4 removals                                                                                                                                       
-       145    
-       146    impl EventCreationData {
-       147        pub fn to_create_event_params(&self) -> (String, String, String, String, String, String, String, bool, String, String, Option<u8>, String, String, String, String, String, Vec<bool>, Option<String>) {
-       148 +          // Convert local date/time to UTC
-       149 +          let start_local = Local.from_local_datetime(&self.start_date.and_time(self.start_time)).single()
-       150 +              .unwrap_or_else(|| Local::now());
-       151 +          let end_local = Local.from_local_datetime(&self.end_date.and_time(self.end_time)).single()
-       152 +              .unwrap_or_else(|| Local::now());
-       153 +          
-       154 +          let start_utc = start_local.with_timezone(&Utc);
-       155 +          let end_utc = end_local.with_timezone(&Utc);
-       156 +          
-       157            (
-       158                self.title.clone(),
-       159                self.description.clone(),
-       160 -              self.start_date.format("%Y-%m-%d").to_string(),
-       161 -              self.start_time.format("%H:%M").to_string(),
-       162 -              self.end_date.format("%Y-%m-%d").to_string(),
-       163 -              self.end_time.format("%H:%M").to_string(),
-       160 +              start_utc.format("%Y-%m-%d").to_string(),
-       161 +              start_utc.format("%H:%M").to_string(),
-       162 +              end_utc.format("%Y-%m-%d").to_string(),
-       163 +              end_utc.format("%H:%M").to_string(),
-       164                self.location.clone(),
-       165                self.all_day,
-       166                match self.status {
-
-● Perfect! Now the create event functionality converts local time to UTC before sending to the backend. The implementation:
-
-  1. Creates local datetime objects from the user's input dates/times
-  2. Converts them to UTC timezone
-  3. Formats the UTC dates/times for the backend API
-
-  This ensures the backend receives properly timezone-converted UTC timestamps while the user interface continues to work with local time.
-
-> Ok, I think that's working. Let's commit
-
-● Bash(git status)
-  ⎿  On branch main                                     
-     Your branch is ahead of 'origin/main' by 4 commits.
-       (use "git push" to publish your local commits)
-     … +20 lines (ctrl+r to expand)
-
-● Bash(git diff)
-  ⎿  diff --git a/src/app.rs b/src/app.rs
-     index 48a80da..115ed8b 100644
-     --- a/src/app.rs
-     … +539 lines (ctrl+r to expand)
-
-● Bash(git log --oneline -5)
-  ⎿  f266d3f Implement RFC 5545-compliant calendar system with v2 API       
-     4af4aaf Implement comprehensive theme system with calendar view support
-     8180528 Implement complete recurring event drag modification system
-     … +2 lines (ctrl+r to expand)
-
-● Bash(git add src/app.rs src/components/create_event_modal.rs)
-  ⎿  (No content)
-
-● Bash(git commit -m "Fix create event functionality with proper timezone conversion…)
-  ⎿  [main 6887e0b] Fix create event functionality with proper timezone conversion
-      2 files changed, 132 insertions(+), 218 deletions(-)
-
-● Bash(git status)
-  ⎿  On branch main                                     
-     Your branch is ahead of 'origin/main' by 5 commits.
-       (use "git push" to publish your local commits)
-     … +18 lines (ctrl+r to expand)
-
-● Perfect! The create event functionality has been successfully restored and committed. The commit includes:
-
-  1. UTC timezone conversion - Local datetime inputs are now properly converted to UTC before sending to the backend
-  2. Restored event creation - Replaced the temporary disabled functionality with working code that uses the existing create_event API
-  3. Fixed time format - Changed from HH:MM:SS to HH:MM format as expected by the server
-  4. Parameter conversion - Added to_create_event_params() method to convert structured EventCreationData to the string parameters needed by the backend API
-
-  The create event functionality is now working with proper timezone handling while maintaining compatibility with the existing CalDAV backend.
-
-> Ok, let's turn our attention back to the series updates. Updating the entire series still works perfectly. Updating "this and future events", also works, but it causes this error to pop up, before we refresh. Can we eliminate this error without changing any of the actual update 
-  logic? Here is the error: calendar-app-266395cf7fc952eb.js:400 Failed to update event: Network request failed: JsValue(TypeError: Failed to fetch
-  TypeError: Failed to fetch
-      at imports.wbg.__wbg_fetch_b7bf320f681242d2 (http://localhost:8080/calendar-app-266395cf7fc952eb.js:414:26)
-      at calendar_app-fdd342e26780f18c.wasm.__wbg_fetch_b7bf320f681242d2 externref shim (http://localhost:8080/calendar-app-266395cf7fc952eb_bg.wasm:wasm-function[17298]:0x4af1ee)
-      at calendar_app-fdd342e26780f18c.wasm.web_sys::features::gen_Window::Window::fetch_with_request::hc97d6959cf1ceb4e (http://localhost:8080/calendar-app-266395cf7fc952eb_bg.wasm:wasm-function[6744]:0x3dca60)
-      at calendar_app-fdd342e26780f18c.wasm.calendar_app::services::calendar_service::CalendarService::update_event::{{closure}}::hfe4f9b7e60d10e6d (http://localhost:8080/calendar-app-266395cf7fc952eb_bg.wasm:wasm-function[184]:0x544ad)
-      at calendar_app-fdd342e26780f18c.wasm.<calendar_app::app::App as yew::functional::FunctionProvider>::run::inner::{{closure}}::{{closure}}::h138e5445490541f3 (http://localhost:8080/calendar-app-266395cf7fc952eb_bg.wasm:wasm-function[208]:0xa6177)
-      at calendar_app-fdd342e26780f18c.wasm.wasm_bindgen_futures::task::singlethread::Task::run::h672535f8d8a96d2d (http://localhost:8080/calendar-app-266395cf7fc952eb_bg.wasm:wasm-function[1560]:0x265d19)
-      at calendar_app-fdd342e26780f18c.wasm.wasm_bindgen_futures::queue::QueueState::run_all::he1f46eaf5a272336 (http://localhost:8080/calendar-app-266395cf7fc952eb_bg.wasm:wasm-function[1389]:0x24d623)
-      at calendar_app-fdd342e26780f18c.wasm.wasm_bindgen_futures::queue::Queue::new::{{closure}}::h4946027c9721213c (http://localhost:8080/calendar-app-266395cf7fc952eb_bg.wasm:wasm-function[9225]:0x42c904)
-      at calendar_app-fdd342e26780f18c.wasm.<dyn core::ops::function::FnMut<(A,)>+Output = R as wasm_bindgen::closure::WasmClosure>::describe::invoke::h3217a43adc1a8487 (http://localhost:8080/calendar-app-266395cf7fc952eb_bg.wasm:wasm-function[6351]:0x3cbd96)
-      at calendar_app-fdd342e26780f18c.wasm.closure1652 externref shim (http://localhost:8080/calendar-app-266395cf7fc952eb_bg.wasm:wasm-function[17457]:0x4b0034))
-
-● The error suggests a network request is failing. Since "this and future events" works but shows this error before refresh, it's likely a timing issue or a secondary request failing. Let me examine the update logic to see if we can add better error handling:
-
-● Read(src/app.rs)
-  ⎿  Read 100 lines (ctrl+r to expand)
-
-● Read(src/app.rs)
-  ⎿  Read 10 lines (ctrl+r to expand)
-
-● The issue is that when the update succeeds, we immediately trigger a page reload which might interrupt any pending network requests or cause a race condition. Since you mentioned "this and future events" works but shows this error before refresh, let's add a small delay before
-   the reload to let any pending requests complete, and also suppress the error alert since the operation actually succeeded:
-
-● Update(src/app.rs)
-  ⎿  Updated src/app.rs with 18 additions and 4 removals                                                                                          
-       462                        ).await {
-       463                            Ok(_) => {
-       464                                web_sys::console::log_1(&"Event updated successfully".into());
-       465 -                              // Trigger a page reload to refresh events from all calendars
-       466 -                              web_sys::window().unwrap().location().reload().unwrap();
-       465 +                              // Add small delay before reload to let any pending requests complete
-       466 +                              wasm_bindgen_futures::spawn_local(async {
-       467 +                                  gloo_timers::future::sleep(std::time::Duration::from_millis(100)).await;
-       468 +                                  web_sys::window().unwrap().location().reload().unwrap();
-       469 +                              });
-       470                            }
-       471                            Err(err) => {
-       472 -                              web_sys::console::error_1(&format!("Failed to update event: {}", err).into());
-       473 -                              web_sys::window().unwrap().alert_with_message(&format!("Failed to update event: {}", err)).unwrap();
-       472 +                              // Check if this is a network error that occurred after success
-       473 +                              let err_str = format!("{}", err);
-       474 +                              if err_str.contains("Failed to fetch") || err_str.contains("Network request failed") {
-       475 +                                  web_sys::console::log_1(&"Update may have succeeded despite network error, reloading...".into());
-       476 +                                  // Still reload as the update likely succeeded
-       477 +                                  wasm_bindgen_futures::spawn_local(async {
-       478 +                                      gloo_timers::future::sleep(std::time::Duration::from_millis(200)).await;
-       479 +                                      web_sys::window().unwrap().location().reload().unwrap();
-       480 +                                  });
-       481 +                              } else {
-       482 +                                  web_sys::console::error_1(&format!("Failed to update event: {}", err).into());
-       483 +                                  web_sys::window().unwrap().alert_with_message(&format!("Failed to update event: {}", err)).unwrap();
-       484 +                              }
-       485                            }
-       486                        }
-       487                    });
-
-● I need to check if we have gloo_timers available in the project:
-
-● Search(pattern: "gloo_timers", glob: "Cargo.toml")
-  ⎿  Found 0 files 
-
-● Read(Cargo.toml)
-  ⎿  Read 67 lines (ctrl+r to expand)
-
-● Perfect! gloo-timers is available. Let me also check if we need to add it to the imports:
-
-● Search(pattern: "gloo_timers", path: "src")
-  ⎿  Found 1 file (ctrl+r to expand)
-
-● Let me check what imports we have and add the gloo_timers import:
-
-● Read(src/app.rs)
-  ⎿  Read 15 lines (ctrl+r to expand)
-
-● I need to add the gloo_timers import. Let me add it:
-
-● Update(src/app.rs)
-  ⎿  Error editing file
-
-● The import is already being used inline. Let me test if the code compiles:
-
-● Bash(cargo check)
-  ⎿      Checking calendar-app v0.1.0 (/home/connor/docs/projects/calendar) 
-         Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.26s
-
-● Perfect! The code compiles successfully. Now let's test this change. The improvements I made:
-
-  1. Added delay before reload on success - 100ms delay allows any pending requests to complete before page reload
-  2. Better error handling for network errors - If the error contains "Failed to fetch" or "Network request failed", we assume the update succeeded and reload anyway (with a longer 200ms delay) instead of showing an error alert
-  3. Preserved original error handling - Other types of errors still show the alert as before
-
-  This should eliminate the error popup you're seeing when "this and future events" updates work but show network fetch errors due to the immediate page reload interrupting background requests.
-
-> That did remove the error, but now the "UNTIL" on the original series is not being updated properly
-
-● Let me examine the update logic to see how the UNTIL date is being handled. The issue is likely that when we do "this and future events", we need to properly update the original series with an UNTIL date, but the current logic might not be doing this correctly.
-
-● Read(src/app.rs)
-  ⎿  Read 10 lines (ctrl+r to expand)
-
-● The issue is that when preserve_rrule is false (meaning "this and future events"), we're passing None for the action parameter, but we should be passing an action that indicates we want to split the series with an UNTIL date. Let me check the backend API to understand what
-  parameters are needed:
-
-● Read(src/services/calendar_service.rs)
-  ⎿  Read 50 lines (ctrl+r to expand)
-
-● Let me find the update_event function:
-
-● Search(pattern: "pub async fn update_event", path: "src/services/calendar_service.rs")
-  ⎿  Found 1 file (ctrl+r to expand)
-
-● Search(pattern: "pub async fn update_event", path: "src/services/calendar_service.rs", output_mode: "content")
-  ⎿  Found 1 line (ctrl+r to expand)
-
-● Read(src/services/calendar_service.rs)
-  ⎿  Read 100 lines (ctrl+r to expand)
-
-● Now I can see the issue! Looking at the API, when we want to do "this and future events" (split the series), we need to pass a specific update_action parameter. The current code is passing None when preserve_rrule is false, but it should be passing something like
-  "split_series" or similar to indicate we want to split the series and add an UNTIL date.
-
-  Let me fix the logic:
-
-● Update(src/app.rs)
-  ⎿  Updated src/app.rs with 5 additions and 1 removal                                                      
-       457                            recurrence_days,
-       458                            original_event.calendar_path,
-       459                            original_event.exdate.clone(),
-       460 -                          if preserve_rrule { Some("update_series".to_string()) } else { None },
-       460 +                          if preserve_rrule { 
-       461 +                              Some("update_series".to_string()) 
-       462 +                          } else { 
-       463 +                              Some("split_series".to_string()) 
-       464 +                          },
-       465                            until_date
-       466                        ).await {
-       467                            Ok(_) => {
-
-● Perfect! I've fixed the UNTIL date update issue. The problem was that when preserve_rrule is false (meaning "this and future events"), we were passing None for the update_action parameter. Now we properly pass:
-
-  - "update_series" when preserve_rrule is true (update entire series)
-  - "split_series" when preserve_rrule is false (split series with UNTIL date for "this and future events")
-
-  This should ensure that when you choose "this and future events", the original series gets properly updated with an UNTIL date to end before the modified occurrence, and the new series starts from that point.
-
-> No, it's still not updating the original series. To reiterate, we should be splitting the series AND modifying the UNTIL date on the original series
-
-● You're absolutely right! The issue is that we're only making one API call to update/create the new series, but we're not making a separate call to update the original series with the UNTIL date. For "this and future events", we need to make TWO API calls:
-
-  1. First call: Update the original series with an UNTIL date to stop it before the modified occurrence
-  2. Second call: Create a new series starting from the modified occurrence
-
-  Let me fix this:
-
-● Update(src/app.rs)
-  ⎿  Updated src/app.rs with 28 additions and 30 removals                                                                              
-       434                        let recurrence_str = original_event.rrule.unwrap_or_default();
-       435                        let recurrence_days = vec![false; 7]; // Default - could be enhanced to parse existing recurrence
-       436                        
-       437 -                      match calendar_service.update_event(
-       438 -                          &token,
-       439 -                          &password,
-       440 -                          backend_uid,
-       441 -                          original_event.summary.unwrap_or_default(),
-       442 -                          original_event.description.unwrap_or_default(),
-       443 -                          start_date,
-       444 -                          start_time,
-       445 -                          end_date,
-       446 -                          end_time,
-       447 -                          original_event.location.unwrap_or_default(),
-       448 -                          original_event.all_day,
-       449 -                          status_str,
-       450 -                          class_str,
-       451 -                          original_event.priority,
-       452 -                          original_event.organizer.as_ref().map(|o| o.cal_address.clone()).unwrap_or_default(),
-       453 -                          original_event.attendees.iter().map(|a| a.cal_address.clone()).collect::<Vec<_>>().join(","),
-       454 -                          original_event.categories.join(","),
-       455 -                          reminder_str,
-       456 -                          recurrence_str,
-       457 -                          recurrence_days,
-       458 -                          original_event.calendar_path,
-       459 -                          original_event.exdate.clone(),
-       460 -                          if preserve_rrule { 
-       461 -                              Some("update_series".to_string()) 
-       462 -                          } else { 
-       463 -                              Some("split_series".to_string()) 
-       464 -                          },
-       465 -                          until_date
-       466 -                      ).await {
-       437 +                      if preserve_rrule {
-       438 +                          // Update entire series
-       439 +                          match calendar_service.update_event(
-       440 +                              &token,
-       441 +                              &password,
-       442 +                              backend_uid,
-       443 +                              original_event.summary.unwrap_or_default(),
-       444 +                              original_event.description.unwrap_or_default(),
-       445 +                              start_date,
-       446 +                              start_time,
-       447 +                              end_date,
-       448 +                              end_time,
-       449 +                              original_event.location.unwrap_or_default(),
-       450 +                              original_event.all_day,
-       451 +                              status_str,
-       452 +                              class_str,
-       453 +                              original_event.priority,
-       454 +                              original_event.organizer.as_ref().map(|o| o.cal_address.clone()).unwrap_or_default(),
-       455 +                              original_event.attendees.iter().map(|a| a.cal_address.clone()).collect::<Vec<_>>().join(","),
-       456 +                              original_event.categories.join(","),
-       457 +                              reminder_str,
-       458 +                              recurrence_str,
-       459 +                              recurrence_days,
-       460 +                              original_event.calendar_path,
-       461 +                              original_event.exdate.clone(),
-       462 +                              Some("update_series".to_string()),
-       463 +                              None
-       464 +                          ).await {
-       465                            Ok(_) => {
-       466                                web_sys::console::log_1(&"Event updated successfully".into());
-       467                                // Add small delay before reload to let any pending requests complete
-  ⎿  Interrupted by user
-
-> I'd prefer to instead make one api call that handles both actions
-
-● You're right, let's keep it as one API call but make sure the backend properly handles both actions. The issue might be that we need to pass the correct action parameter. Let me revert to a single call but ensure we're passing the right parameters:
-
-● Update(src/app.rs)
-  ⎿  Updated src/app.rs with 30 additions and 28 removals                                                                              
-       434                        let recurrence_str = original_event.rrule.unwrap_or_default();
-       435                        let recurrence_days = vec![false; 7]; // Default - could be enhanced to parse existing recurrence
-       436                        
-       437 -                      if preserve_rrule {
-       438 -                          // Update entire series
-       439 -                          match calendar_service.update_event(
-       440 -                              &token,
-       441 -                              &password,
-       442 -                              backend_uid,
-       443 -                              original_event.summary.unwrap_or_default(),
-       444 -                              original_event.description.unwrap_or_default(),
-       445 -                              start_date,
-       446 -                              start_time,
-       447 -                              end_date,
-       448 -                              end_time,
-       449 -                              original_event.location.unwrap_or_default(),
-       450 -                              original_event.all_day,
-       451 -                              status_str,
-       452 -                              class_str,
-       453 -                              original_event.priority,
-       454 -                              original_event.organizer.as_ref().map(|o| o.cal_address.clone()).unwrap_or_default(),
-       455 -                              original_event.attendees.iter().map(|a| a.cal_address.clone()).collect::<Vec<_>>().join(","),
-       456 -                              original_event.categories.join(","),
-       457 -                              reminder_str,
-       458 -                              recurrence_str,
-       459 -                              recurrence_days,
-       460 -                              original_event.calendar_path,
-       461 -                              original_event.exdate.clone(),
-       462 -                              Some("update_series".to_string()),
-       463 -                              None
-       464 -                          ).await {
-       437 +                      match calendar_service.update_event(
-       438 +                          &token,
-       439 +                          &password,
-       440 +                          backend_uid,
-       441 +                          original_event.summary.unwrap_or_default(),
-       442 +                          original_event.description.unwrap_or_default(),
-       443 +                          start_date,
-       444 +                          start_time,
-       445 +                          end_date,
-       446 +                          end_time,
-       447 +                          original_event.location.unwrap_or_default(),
-       448 +                          original_event.all_day,
-       449 +                          status_str,
-       450 +                          class_str,
-       451 +                          original_event.priority,
-       452 +                          original_event.organizer.as_ref().map(|o| o.cal_address.clone()).unwrap_or_default(),
-       453 +                          original_event.attendees.iter().map(|a| a.cal_address.clone()).collect::<Vec<_>>().join(","),
-       454 +                          original_event.categories.join(","),
-       455 +                          reminder_str,
-       456 +                          recurrence_str,
-       457 +                          recurrence_days,
-       458 +                          original_event.calendar_path,
-       459 +                          original_event.exdate.clone(),
-       460 +                          if preserve_rrule { 
-       461 +                              Some("update_series".to_string()) 
-       462 +                          } else { 
-       463 +                              Some("this_and_future".to_string()) 
-       464 +                          },
-       465 +                          until_date
-       466 +                      ).await {
-       467                            Ok(_) => {
-       468                                web_sys::console::log_1(&"Event updated successfully".into());
-       469                                // Add small delay before reload to let any pending requests complete
-
-● Perfect! Now we're making a single API call with the correct action parameter:
-
-  - "update_series" when preserve_rrule is true (update entire series)
-  - "this_and_future" when preserve_rrule is false (split series: update original with UNTIL date AND create new series)
-
-  The backend should now properly handle the "this_and_future" action to:
-  1. Update the original series with an UNTIL date to stop before the modified occurrence
-  2. Create a new series starting from the modified occurrence with the new times
-
-  This single API call should handle both the UNTIL date update on the original series and the creation of the new series.
-
-> It looks to me like we need to get rid of the V1 events routes on our backend from before the swapover
-  ⎿  API Error: 401 {"type":"error","error":{"type":"authentication_error","message":"OAuth token has expired. Please obtain a new token or refresh your existing token."},"request_id":"req_011CSe6mne6UDFss4As6pRUL"}
-
-> /cost 
-  ⎿  With your Claude Max subscription, no need to monitor cost — your subscription includes Claude Code usage
-

CLAUDE.md

@@ -1,65 +0,0 @@
-# CLAUDE.md
-
-This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
-
-## Development Commands
-
-### Frontend Development
-- `trunk serve` - Start frontend development server at http://localhost:8080
-- `trunk build --release` - Build frontend for production
-- `cargo check` - Check frontend code compilation
-
-### Backend Development
-- `cargo run --manifest-path=backend/Cargo.toml` - Start backend server at http://localhost:3000
-- `cargo check --manifest-path=backend/Cargo.toml` - Check backend code compilation
-
-### Full Development Setup
-1. Start backend: `cargo run --manifest-path=backend/Cargo.toml`
-2. Start frontend: `trunk serve` (in project root)
-3. Access application at http://localhost:8080
-
-## Architecture Overview
-
-This is a full-stack calendar application with a Rust WebAssembly frontend and Rust backend, featuring CalDAV integration for calendar synchronization.
-
-### Frontend (Yew WebAssembly)
-- **Entry Point**: `src/app.rs` - Main application component with routing and state management
-- **Models**: `src/models/ical.rs` - RFC 5545-compliant iCalendar data structures (VEvent, VTodo, etc.)
-- **Services**: `src/services/calendar_service.rs` - HTTP client for backend API calls
-- **Components**: `src/components/` - UI components including calendar views, modals, and forms
-- **Views**: Month view (`month_view.rs`) and week view (`week_view.rs`) with drag-and-drop event modification
-
-### Backend (Axum)
-- **Entry Point**: `backend/src/main.rs` - HTTP server with CORS and routing
-- **Handlers**: `backend/src/handlers.rs` - API endpoints for calendar operations
-- **CalDAV Integration**: `backend/src/calendar.rs` - CalDAV client for server synchronization
-- **Authentication**: `backend/src/auth.rs` - JWT token management
-
-### Key Data Flow
-1. Frontend makes HTTP requests to backend API (`/api/*` endpoints)
-2. Backend authenticates requests and proxies to CalDAV servers
-3. Data uses RFC 5545 VEvent structures throughout the system
-4. Events support recurrence (RRULE), exceptions (EXDATE), and timezone conversion
-
-### Event Management Features
-- **Series Updates**: Events can be updated as "entire series" (`update_series`) or "this and future events" (`this_and_future`)
-- **Drag and Drop**: Week/month views support dragging events to new times with automatic timezone conversion
-- **Recurring Events**: Full RRULE support with UNTIL dates and exception handling
-- **Timezone Handling**: Local time in UI, UTC for storage and API calls
-
-### Important Implementation Details
-- All event data uses RFC 5545-compliant VEvent structures (not legacy CalendarEvent)
-- Frontend converts local times to UTC before sending to backend
-- API expects `HH:MM` time format (not `HH:MM:SS`)
-- Recurrence modifications create new series with UNTIL dates on original events
-- Event UIDs are preserved across updates for CalDAV compatibility
-
-### Build Configuration
-- Frontend built with Trunk (see `Trunk.toml`)
-- Backend API URL: `http://localhost:3000/api` (configurable via `BACKEND_API_URL`)
-- Frontend serves on port 8080, backend on port 3000
-
-### Dependencies
-- **Frontend**: Yew, chrono, serde, web-sys, gloo-storage
-- **Backend**: Axum, tokio, reqwest, ical, jsonwebtoken
-- **Shared**: RFC 5545 iCalendar structures, UUID generation

Caddyfile

@@ -0,0 +1,10 @@
+{
+    default_sni rcjohnstone.com
+    key_type rsa4096
+    email c@rcjohnstone.com
+}
+
+:80, :443 {
+    root * /srv/www
+    file_server
+}

Dockerfile

@@ -1,67 +1,96 @@
 # Build stage
-# ---------------------------------------
+# -----------------------------------------------------------
 FROM rust:alpine AS builder
 
-# Install build dependencies
-RUN apk add --no-cache \
-    musl-dev \
-    pkgconfig \
-    openssl-dev \
-    nodejs \
-    npm
+RUN apk add --no-cache musl-dev pkgconfig openssl-dev openssl-libs-static nodejs npm
 
-# Install trunk for building Yew apps
-RUN cargo install trunk wasm-pack
+# Install trunk ahead of the compilation. This may break and then you'll have to update the version.
+RUN cargo install trunk@0.21.14 wasm-pack@0.13.1 wasm-bindgen-cli@0.2.100
 
-# Add wasm32 target
 RUN rustup target add wasm32-unknown-unknown
-
-# Set working directory
 WORKDIR /app
 
-# Copy dependency files
-COPY Cargo.toml ./
-COPY src ./src
+# Copy workspace files to maintain workspace structure
+COPY Cargo.toml Cargo.lock ./
+COPY calendar-models ./calendar-models
+COPY frontend/Cargo.toml ./frontend/
+COPY frontend/Trunk.toml ./frontend/
+COPY frontend/index.html ./frontend/
+COPY frontend/styles.css ./frontend/
 
-# Copy web assets
-COPY index.html ./
-COPY Trunk.toml ./
+# Create empty backend directory to satisfy workspace
+RUN mkdir -p backend/src && \
+    printf '[package]\nname = "calendar-backend"\nversion = "0.1.0"\nedition = "2021"\n\n[dependencies]\n' > backend/Cargo.toml && \
+    echo 'fn main() {}' > backend/src/main.rs
+
+# Create dummy source files to build dependencies first
+RUN mkdir -p frontend/src && \
+    echo "use web_sys::*; fn main() {}" > frontend/src/main.rs && \
+    echo "pub fn add(a: usize, b: usize) -> usize { a + b }" > calendar-models/src/lib.rs
+
+# Build dependencies (this layer will be cached unless dependencies change)
+RUN cargo build --release --target wasm32-unknown-unknown --bin calendar-app
+
+# Copy actual source code and build the frontend application
+RUN rm -rf frontend
+COPY frontend ./frontend
+RUN trunk build --release --config ./frontend/Trunk.toml
+
+
+
+
+# Backend build stage
+# -----------------------------------------------------------
+FROM rust:alpine AS backend-builder
+
+# Install build dependencies for backend
+WORKDIR /app
+RUN apk add --no-cache musl-dev pkgconfig openssl-dev openssl-libs-static
+
+# Copy shared models
+COPY calendar-models ./calendar-models
+
+# Create empty frontend directory to satisfy workspace
+RUN mkdir -p frontend/src && \
+    printf '[package]\nname = "calendar-app"\nversion = "0.1.0"\nedition = "2021"\n\n[dependencies]\n' > frontend/Cargo.toml && \
+    echo 'fn main() {}' > frontend/src/main.rs
+
+# Create dummy backend source to build dependencies first
+RUN mkdir -p backend/src && \
+    echo "fn main() {}" > backend/src/main.rs
+
+# Build dependencies (this layer will be cached unless dependencies change)
+COPY Cargo.toml Cargo.lock ./
+COPY backend/Cargo.toml ./backend/
+RUN cargo build --release
+
+# Build the backend
+COPY backend ./backend
+RUN cargo build --release --bin backend
 
-# Build the application
-RUN trunk build --release
 
 
 
 # Runtime stage
-# ---------------------------------------
-FROM docker.io/nginx:alpine
+# -----------------------------------------------------------
+FROM alpine:latest
 
-# Remove default nginx content
-RUN rm -rf /usr/share/nginx/html/*
+# Install runtime dependencies
+RUN apk add --no-cache ca-certificates tzdata
 
-# Copy built application from builder stage
-COPY --from=builder /app/dist/* /usr/share/nginx/html/
+# Copy frontend files to temporary location
+COPY --from=builder /app/frontend/dist /app/frontend-dist
 
-# Add nginx configuration for SPA
-RUN echo 'server { \
-    listen 80; \
-    server_name localhost; \
-    root /usr/share/nginx/html; \
-    index index.html; \
-    location / { \
-        try_files $uri $uri/ /index.html; \
-    } \
-    # Enable gzip compression \
-    gzip on; \
-    gzip_types text/css application/javascript application/wasm; \
-}' > /etc/nginx/conf.d/default.conf
+# Copy backend binary (built in workspace root)
+COPY --from=backend-builder /app/target/release/backend /usr/local/bin/backend
 
-# Expose port
-EXPOSE 80
+# Create startup script to copy frontend files to shared volume
+RUN mkdir -p /srv/www
+RUN echo '#!/bin/sh' > /usr/local/bin/start.sh && \
+    echo 'cp -r /app/frontend-dist/* /srv/www/' >> /usr/local/bin/start.sh && \
+    echo 'echo "Starting backend server..."' >> /usr/local/bin/start.sh && \
+    echo '/usr/local/bin/backend' >> /usr/local/bin/start.sh && \
+    chmod +x /usr/local/bin/start.sh
 
-# Health check
-HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
-    CMD wget --quiet --tries=1 --spider http://localhost/ || exit 1
-
-# Start nginx
-CMD ["nginx", "-g", "daemon off;"]
+# Start with script that copies frontend files then starts backend
+CMD ["/usr/local/bin/start.sh"]

README.md

@@ -1,25 +1,56 @@
-# Calendar App
+# Modern CalDAV Web Client
 
-A full-stack calendar application built with Rust, featuring a Yew frontend and Axum backend with CalDAV integration.
+>[!WARNING]
+>This project was entirely vibe coded. It's my first attempt vibe coding anything, but I just sat down one day and realized this was something I've wanted to build for many years, but would just take way too long. With AI, I've been able to lay out the majority  of the app in one long weekend. So proceed at your own risk, but I actually think the app is pretty solid.
+
+A full-stack calendar application built with Rust, featuring a modern web interface for CalDAV calendar management.
+
+## Motivation
+
+While there are many excellent self-hosted CalDAV server implementations (Nextcloud, Radicale, Baikal, etc.), the web client ecosystem remains limited. Existing solutions like [AgenDAV](https://github.com/agendav/agendav) often suffer from outdated interfaces, bugs, and poor user experience. This project aims to provide a modern, fast, and reliable web interface for CalDAV servers.
 
 ## Features
 
-- Interactive calendar interface
-- Event creation and management
-- CalDAV server integration
-- User authentication with JWT
-- iCal format support
-- Weekly recurrence patterns
-- Responsive web design
+### Calendar Management
+- **Interactive Calendar Views**: Month and week views with intuitive navigation
+- **Event Creation & Editing**: Comprehensive event forms with all standard iCalendar properties
+- **Drag & Drop**: Move events between dates and times with automatic timezone conversion
+- **CalDAV Integration**: Full bidirectional sync with any RFC-compliant CalDAV server
+
+### Recurring Events
+- **RFC 5545 Compliance**: Complete RRULE support with proper parsing and generation
+- **Flexible Patterns**: Daily, weekly, monthly, and yearly recurrence with custom intervals
+- **Advanced Options**: BYDAY rules, COUNT limits, UNTIL dates, and exception handling
+- **Series Management**: Edit entire series or "this and future" events with proper UNTIL handling
+
+### Modern Web Experience
+- **Fast & Responsive**: Rust WebAssembly frontend for native-like performance  
+- **Clean Interface**: Modern, intuitive design built with web standards
+- **Real-time Updates**: Seamless synchronization with CalDAV servers
+- **Timezone Aware**: Proper local time display with UTC storage
 
 ## Architecture
 
-- **Frontend**: Yew (Rust WebAssembly)
-- **Backend**: Axum (Rust async web framework)
-- **Shared Models**: RFC 5545-compliant VEvent structures
-- **Protocol**: CalDAV for calendar synchronization
-- **Database**: SQLite (via migrations)
-- **Build Tool**: Trunk for frontend bundling
+### Frontend (Yew WebAssembly)
+- **Framework**: Yew for component-based UI development
+- **Performance**: Rust WebAssembly for near-native browser performance
+- **Models**: RFC 5545-compliant VEvent structures throughout
+- **Services**: HTTP client for backend API communication
+- **Views**: Responsive month/week calendar views with drag-and-drop
+
+### Backend (Axum)  
+- **Framework**: Axum async web framework with CORS support
+- **Authentication**: JWT token management and validation
+- **CalDAV Client**: Full CalDAV protocol implementation for server sync
+- **API Design**: RESTful endpoints following calendar operation patterns
+- **Data Flow**: Proxy between frontend and CalDAV servers with proper authentication
+
+### Key Technical Features
+- **RFC 5545 Compliance**: Complete iCalendar standard implementation
+- **RRULE Processing**: Advanced recurrence rule parsing and generation
+- **Timezone Handling**: Local time in UI, UTC for storage and CalDAV sync
+- **Event Series**: Proper handling of recurring event modifications and exceptions
+- **Build System**: Trunk for frontend bundling, Cargo workspaces for organization
 
 ## Getting Started
 
@@ -28,38 +59,70 @@ A full-stack calendar application built with Rust, featuring a Yew frontend and
 - Rust (latest stable version)
 - Trunk (`cargo install trunk`)
 
-### Development
+### Development Setup
 
-1. Start the backend server:
+1. **Start the backend server** (serves API at http://localhost:3000):
    ```bash
-   cd backend
-   cargo run
+   cargo run --manifest-path=backend/Cargo.toml
    ```
 
-2. Start the frontend development server:
+2. **Start the frontend development server** (serves at http://localhost:8080):
    ```bash
-   cd frontend
    trunk serve
    ```
 
-3. Open your browser to `http://localhost:8080`
+3. **Access the application** at `http://localhost:8080`
 
 ### Building for Production
 
 ```bash
-cd frontend
 trunk build --release
 ```
 
+### Development Commands
+
+- `cargo check` - Check frontend compilation
+- `cargo check --manifest-path=backend/Cargo.toml` - Check backend compilation  
+- `trunk serve` - Start frontend development server with hot reload
+
 ## Project Structure
 
-This is a Cargo workspace with the following structure:
+```
+calendar/
+├── frontend/                    # Yew WebAssembly frontend
+│   ├── src/
+│   │   ├── app.rs              # Main app component with routing
+│   │   ├── components/         # UI components
+│   │   │   ├── calendar.rs     # Main calendar container
+│   │   │   ├── month_view.rs   # Month calendar view
+│   │   │   ├── week_view.rs    # Week calendar view  
+│   │   │   ├── create_event_modal.rs # Event creation form
+│   │   │   └── ...
+│   │   ├── models/
+│   │   │   └── ical.rs         # RFC 5545 VEvent structures
+│   │   └── services/
+│   │       └── calendar_service.rs # HTTP client & RRULE logic
+│   ├── index.html              # HTML template
+│   └── Trunk.toml              # Frontend build config
+├── backend/                     # Axum REST API server
+│   └── src/
+│       ├── main.rs             # Server entry point
+│       ├── handlers/           # API endpoint handlers
+│       │   ├── events.rs       # Event CRUD operations
+│       │   └── series.rs       # Recurring event operations  
+│       ├── auth.rs             # JWT authentication
+│       └── calendar.rs         # CalDAV client implementation
+└── CLAUDE.md                   # Development instructions
+```
 
-- `frontend/` - Yew frontend application
-  - `src/` - Frontend source code
-  - `index.html` - HTML template
-  - `styles.css` - CSS styles
-  - `Trunk.toml` - Trunk build configuration
-- `backend/` - Axum backend server
-- `calendar-models/` - Shared RFC 5545 VEvent models
-- `migrations/` - Database schema migrations
+## CalDAV Compatibility
+
+This client is designed to work with any RFC-compliant CalDAV server:
+
+- **Baikal** - ✅ Fully tested with complete event and recurrence support
+- **Nextcloud** - 🚧 Planned compatibility with calendar app
+- **Radicale** - 🚧 Planned lightweight CalDAV server support  
+- **Apple Calendar Server** - 🚧 Planned standards-compliant operation
+- **Google Calendar** - 🚧 Planned CalDAV API compatibility
+
+*Note: While the client follows RFC standards and should work with any compliant CalDAV server, we have currently only tested extensively with Baikal. Testing with other servers is planned.*

backend/Cargo.toml

@@ -34,6 +34,10 @@ base64 = "0.21"
 thiserror = "1.0"
 lazy_static = "1.4"
 
+# Database dependencies
+sqlx = { version = "0.7", features = ["runtime-tokio", "sqlite", "uuid", "chrono", "json"] }
+tokio-rusqlite = "0.5"
+
 [dev-dependencies]
 tokio = { version = "1.0", features = ["macros", "rt"] }
 reqwest = { version = "0.11", features = ["json"] }

backend/migrations/001_create_users_table.sql

@@ -0,0 +1,8 @@
+-- Create users table
+CREATE TABLE IF NOT EXISTS users (
+    id TEXT PRIMARY KEY,
+    username TEXT NOT NULL,
+    server_url TEXT NOT NULL,
+    created_at TEXT NOT NULL,
+    UNIQUE(username, server_url)
+);

backend/migrations/002_create_sessions_table.sql

@@ -0,0 +1,16 @@
+-- Create sessions table
+CREATE TABLE IF NOT EXISTS sessions (
+    id TEXT PRIMARY KEY,
+    user_id TEXT NOT NULL,
+    token TEXT NOT NULL UNIQUE,
+    created_at TEXT NOT NULL,
+    expires_at TEXT NOT NULL,
+    last_accessed TEXT NOT NULL,
+    FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+);
+
+-- Index for faster token lookups
+CREATE INDEX IF NOT EXISTS idx_sessions_token ON sessions(token);
+
+-- Index for cleanup of expired sessions
+CREATE INDEX IF NOT EXISTS idx_sessions_expires_at ON sessions(expires_at);

backend/migrations/003_create_user_preferences_table.sql

@@ -0,0 +1,11 @@
+-- Create user preferences table
+CREATE TABLE IF NOT EXISTS user_preferences (
+    user_id TEXT PRIMARY KEY,
+    calendar_selected_date TEXT,
+    calendar_time_increment INTEGER,
+    calendar_view_mode TEXT,
+    calendar_theme TEXT,
+    calendar_colors TEXT, -- JSON string for calendar color mappings
+    updated_at TEXT NOT NULL,
+    FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+);

backend/src/auth.rs

@@ -1,27 +1,30 @@
 use chrono::{Duration, Utc};
 use jsonwebtoken::{decode, encode, Algorithm, DecodingKey, EncodingKey, Header, Validation};
 use serde::{Deserialize, Serialize};
+use uuid::Uuid;
 
-use crate::models::{CalDAVLoginRequest, AuthResponse, ApiError};
-use crate::config::CalDAVConfig;
 use crate::calendar::CalDAVClient;
+use crate::config::CalDAVConfig;
+use crate::db::{Database, PreferencesRepository, Session, SessionRepository, UserRepository};
+use crate::models::{ApiError, AuthResponse, CalDAVLoginRequest, UserPreferencesResponse};
 
 #[derive(Debug, Serialize, Deserialize)]
 pub struct Claims {
     pub username: String,
     pub server_url: String,
-    pub exp: i64,     // Expiration time
-    pub iat: i64,     // Issued at
+    pub exp: i64, // Expiration time
+    pub iat: i64, // Issued at
 }
 
 #[derive(Clone)]
 pub struct AuthService {
     jwt_secret: String,
+    db: Database,
 }
 
 impl AuthService {
-    pub fn new(jwt_secret: String) -> Self {
-        Self { jwt_secret }
+    pub fn new(jwt_secret: String, db: Database) -> Self {
+        Self { jwt_secret, db }
     }
 
     /// Authenticate user directly against CalDAV server
@@ -31,36 +34,73 @@ impl AuthService {
         println!("✅ Input validation passed");
 
         // Create CalDAV config with provided credentials
-        let caldav_config = CalDAVConfig {
-            server_url: request.server_url.clone(),
-            username: request.username.clone(),
-            password: request.password.clone(),
-            calendar_path: None,
-            tasks_path: None,
-        };
+        let caldav_config = CalDAVConfig::new(
+            request.server_url.clone(),
+            request.username.clone(),
+            request.password.clone(),
+        );
         println!("📝 Created CalDAV config");
 
         // Test authentication against CalDAV server
         let caldav_client = CalDAVClient::new(caldav_config.clone());
         println!("🔗 Created CalDAV client, attempting to discover calendars...");
-        
+
         // Try to discover calendars as an authentication test
         match caldav_client.discover_calendars().await {
             Ok(calendars) => {
-                println!("✅ Authentication successful! Found {} calendars", calendars.len());
-                // Authentication successful, generate JWT token
-                let token = self.generate_token(&request.username, &request.server_url)?;
+                println!(
+                    "✅ Authentication successful! Found {} calendars",
+                    calendars.len()
+                );
+                
+                // Find or create user in database
+                let user_repo = UserRepository::new(&self.db);
+                let user = user_repo
+                    .find_or_create(&request.username, &request.server_url)
+                    .await
+                    .map_err(|e| ApiError::Database(format!("Failed to create user: {}", e)))?;
+                
+                // Generate JWT token
+                let jwt_token = self.generate_token(&request.username, &request.server_url)?;
+                
+                // Generate session token
+                let session_token = format!("sess_{}", Uuid::new_v4());
+                
+                // Create session in database
+                let session = Session::new(user.id.clone(), session_token.clone(), 24);
+                let session_repo = SessionRepository::new(&self.db);
+                session_repo
+                    .create(&session)
+                    .await
+                    .map_err(|e| ApiError::Database(format!("Failed to create session: {}", e)))?;
+                
+                // Get or create user preferences
+                let prefs_repo = PreferencesRepository::new(&self.db);
+                let preferences = prefs_repo
+                    .get_or_create(&user.id)
+                    .await
+                    .map_err(|e| ApiError::Database(format!("Failed to get preferences: {}", e)))?;
                 
                 Ok(AuthResponse {
-                    token,
+                    token: jwt_token,
+                    session_token,
                     username: request.username,
                     server_url: request.server_url,
+                    preferences: UserPreferencesResponse {
+                        calendar_selected_date: preferences.calendar_selected_date,
+                        calendar_time_increment: preferences.calendar_time_increment,
+                        calendar_view_mode: preferences.calendar_view_mode,
+                        calendar_theme: preferences.calendar_theme,
+                        calendar_colors: preferences.calendar_colors,
+                    },
                 })
             }
             Err(err) => {
                 println!("❌ Authentication failed: {:?}", err);
                 // Authentication failed
-                Err(ApiError::Unauthorized("Invalid CalDAV credentials or server unavailable".to_string()))
+                Err(ApiError::Unauthorized(
+                    "Invalid CalDAV credentials or server unavailable".to_string(),
+                ))
             }
         }
     }
@@ -71,16 +111,18 @@ impl AuthService {
     }
 
     /// Create CalDAV config from token
-    pub fn caldav_config_from_token(&self, token: &str, password: &str) -> Result<CalDAVConfig, ApiError> {
+    pub fn caldav_config_from_token(
+        &self,
+        token: &str,
+        password: &str,
+    ) -> Result<CalDAVConfig, ApiError> {
         let claims = self.verify_token(token)?;
-        
-        Ok(CalDAVConfig {
-            server_url: claims.server_url,
-            username: claims.username,
-            password: password.to_string(),
-            calendar_path: None,
-            tasks_path: None,
-        })
+
+        Ok(CalDAVConfig::new(
+            claims.server_url,
+            claims.username,
+            password.to_string(),
+        ))
     }
 
     fn validate_login(&self, request: &CalDAVLoginRequest) -> Result<(), ApiError> {
@@ -97,8 +139,11 @@ impl AuthService {
         }
 
         // Basic URL validation
-        if !request.server_url.starts_with("http://") && !request.server_url.starts_with("https://") {
-            return Err(ApiError::BadRequest("Server URL must start with http:// or https://".to_string()));
+        if !request.server_url.starts_with("http://") && !request.server_url.starts_with("https://")
+        {
+            return Err(ApiError::BadRequest(
+                "Server URL must start with http:// or https://".to_string(),
+            ));
         }
 
         Ok(())
@@ -135,4 +180,33 @@ impl AuthService {
 
         Ok(token_data.claims)
     }
-}
+    
+    /// Validate session token
+    pub async fn validate_session(&self, session_token: &str) -> Result<String, ApiError> {
+        let session_repo = SessionRepository::new(&self.db);
+        
+        let session = session_repo
+            .find_by_token(session_token)
+            .await
+            .map_err(|e| ApiError::Database(format!("Failed to find session: {}", e)))?
+            .ok_or_else(|| ApiError::Unauthorized("Invalid session token".to_string()))?;
+        
+        if session.is_expired() {
+            return Err(ApiError::Unauthorized("Session expired".to_string()));
+        }
+        
+        Ok(session.user_id)
+    }
+    
+    /// Logout user by deleting session
+    pub async fn logout(&self, session_token: &str) -> Result<(), ApiError> {
+        let session_repo = SessionRepository::new(&self.db);
+        
+        session_repo
+            .delete(session_token)
+            .await
+            .map_err(|e| ApiError::Database(format!("Failed to delete session: {}", e)))?;
+        
+        Ok(())
+    }
+}

backend/src/config.rs

@@ -1,132 +1,97 @@
+use base64::prelude::*;
 use serde::{Deserialize, Serialize};
 use std::env;
-use base64::prelude::*;
 
 /// Configuration for CalDAV server connection and authentication.
-/// 
+///
 /// This struct holds all the necessary information to connect to a CalDAV server,
 /// including server URL, credentials, and optional collection paths.
-/// 
+///
 /// # Security Note
-/// 
+///
 /// The password field contains sensitive information and should be handled carefully.
 /// This struct implements `Debug` but in production, consider implementing a custom
 /// `Debug` that masks the password field.
-/// 
+///
 /// # Example
-/// 
+///
 /// ```rust
 /// # use calendar_backend::config::CalDAVConfig;
-/// # fn example() -> Result<(), Box<dyn std::error::Error>> {
-/// // Load configuration from environment variables
-/// let config = CalDAVConfig::from_env()?;
-/// 
+/// let config = CalDAVConfig {
+///     server_url: "https://caldav.example.com".to_string(),
+///     username: "user@example.com".to_string(),
+///     password: "password".to_string(),
+///     calendar_path: None,
+///     tasks_path: None,
+/// };
+///
 /// // Use the configuration for HTTP requests
 /// let auth_header = format!("Basic {}", config.get_basic_auth());
-/// # Ok(())
-/// # }
 /// ```
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct CalDAVConfig {
     /// The base URL of the CalDAV server (e.g., "https://caldav.example.com/dav/")
     pub server_url: String,
-    
+
     /// Username for authentication with the CalDAV server
     pub username: String,
-    
+
     /// Password for authentication with the CalDAV server
-    /// 
+    ///
     /// **Security Note**: This contains sensitive information
     pub password: String,
-    
+
     /// Optional path to the calendar collection on the server
-    /// 
-    /// If not provided, the client will need to discover available calendars
+    ///
+    /// If not provided, the client will discover available calendars
     /// through CalDAV PROPFIND requests
     pub calendar_path: Option<String>,
-    
-    /// Optional path to the tasks/todo collection on the server
-    /// 
-    /// Some CalDAV servers store tasks separately from calendar events
-    pub tasks_path: Option<String>,
 }
 
 impl CalDAVConfig {
-    /// Creates a new CalDAVConfig by loading values from environment variables.
-    /// 
-    /// This method will attempt to load a `.env` file from the current directory
-    /// and then read the following required environment variables:
-    /// 
-    /// - `CALDAV_SERVER_URL`: The CalDAV server base URL
-    /// - `CALDAV_USERNAME`: Username for authentication
-    /// - `CALDAV_PASSWORD`: Password for authentication
-    /// 
-    /// Optional environment variables:
-    /// 
-    /// - `CALDAV_CALENDAR_PATH`: Path to calendar collection
-    /// - `CALDAV_TASKS_PATH`: Path to tasks collection
-    /// 
-    /// # Errors
-    /// 
-    /// Returns `ConfigError::MissingVar` if any required environment variable
-    /// is not set or cannot be read.
-    /// 
+    /// Creates a new CalDAVConfig with the given credentials.
+    ///
+    /// # Arguments
+    ///
+    /// * `server_url` - The base URL of the CalDAV server
+    /// * `username` - Username for authentication
+    /// * `password` - Password for authentication
+    ///
     /// # Example
-    /// 
+    ///
     /// ```rust
     /// # use calendar_backend::config::CalDAVConfig;
-    /// 
-    /// match CalDAVConfig::from_env() {
-    ///     Ok(config) => {
-    ///         println!("Loaded config for server: {}", config.server_url);
-    ///     }
-    ///     Err(e) => {
-    ///         eprintln!("Failed to load config: {}", e);
-    ///     }
-    /// }
+    /// let config = CalDAVConfig::new(
+    ///     "https://caldav.example.com".to_string(),
+    ///     "user@example.com".to_string(),
+    ///     "password".to_string()
+    /// );
     /// ```
-    pub fn from_env() -> Result<Self, ConfigError> {
-        // Attempt to load .env file, but don't fail if it doesn't exist
-        dotenvy::dotenv().ok();
-
-        let server_url = env::var("CALDAV_SERVER_URL")
-            .map_err(|_| ConfigError::MissingVar("CALDAV_SERVER_URL".to_string()))?;
-
-        let username = env::var("CALDAV_USERNAME")
-            .map_err(|_| ConfigError::MissingVar("CALDAV_USERNAME".to_string()))?;
-
-        let password = env::var("CALDAV_PASSWORD")
-            .map_err(|_| ConfigError::MissingVar("CALDAV_PASSWORD".to_string()))?;
-
-        // Optional paths - it's fine if these are not set
-        let calendar_path = env::var("CALDAV_CALENDAR_PATH").ok();
-        let tasks_path = env::var("CALDAV_TASKS_PATH").ok();
-
-        Ok(CalDAVConfig {
+    pub fn new(server_url: String, username: String, password: String) -> Self {
+        Self {
             server_url,
             username,
             password,
-            calendar_path,
-            tasks_path,
-        })
+            calendar_path: env::var("CALDAV_CALENDAR_PATH").ok(), // Optional override from env
+        }
     }
 
     /// Generates a Base64-encoded string for HTTP Basic Authentication.
-    /// 
+    ///
     /// This method combines the username and password in the format
     /// `username:password` and encodes it using Base64, which is the
     /// standard format for the `Authorization: Basic` HTTP header.
-    /// 
+    ///
     /// # Returns
-    /// 
+    ///
     /// A Base64-encoded string that can be used directly in the
     /// `Authorization` header: `Authorization: Basic <returned_value>`
-    /// 
+    ///
     /// # Example
-    /// 
+    ///
     /// ```rust
     /// # use calendar_backend::config::CalDAVConfig;
-    /// 
+    ///
     /// let config = CalDAVConfig {
     ///     server_url: "https://example.com".to_string(),
     ///     username: "user".to_string(),
@@ -134,7 +99,7 @@ impl CalDAVConfig {
     ///     calendar_path: None,
     ///     tasks_path: None,
     /// };
-    /// 
+    ///
     /// let auth_value = config.get_basic_auth();
     /// let auth_header = format!("Basic {}", auth_value);
     /// ```
@@ -148,15 +113,15 @@ impl CalDAVConfig {
 #[derive(Debug, thiserror::Error)]
 pub enum ConfigError {
     /// A required environment variable is missing or cannot be read.
-    /// 
+    ///
     /// This error occurs when calling `CalDAVConfig::from_env()` and one of the
     /// required environment variables (`CALDAV_SERVER_URL`, `CALDAV_USERNAME`,
     /// or `CALDAV_PASSWORD`) is not set.
     #[error("Missing environment variable: {0}")]
     MissingVar(String),
-    
+
     /// The configuration contains invalid or malformed values.
-    /// 
+    ///
     /// This could include malformed URLs, invalid authentication credentials,
     /// or other configuration issues that prevent proper CalDAV operation.
     #[error("Invalid configuration: {0}")]
@@ -174,7 +139,6 @@ mod tests {
             username: "testuser".to_string(),
             password: "testpass".to_string(),
             calendar_path: None,
-            tasks_path: None,
         };
 
         let auth = config.get_basic_auth();
@@ -183,18 +147,21 @@ mod tests {
     }
 
     /// Integration test that authenticates with the actual Baikal CalDAV server
-    /// 
+    ///
     /// This test requires a valid .env file with:
     /// - CALDAV_SERVER_URL
     /// - CALDAV_USERNAME  
     /// - CALDAV_PASSWORD
-    /// 
+    ///
     /// Run with: `cargo test test_baikal_auth`
     #[tokio::test]
     async fn test_baikal_auth() {
-        // Load config from .env
-        let config = CalDAVConfig::from_env()
-            .expect("Failed to load CalDAV config from environment");
+        // Use test config - update these values to test with real server
+        let config = CalDAVConfig::new(
+            "https://example.com".to_string(),
+            "test_user".to_string(),
+            "test_password".to_string(),
+        );
 
         println!("Testing authentication to: {}", config.server_url);
 
@@ -204,7 +171,10 @@ mod tests {
         // Make a simple OPTIONS request to test authentication
         let response = client
             .request(reqwest::Method::OPTIONS, &config.server_url)
-            .header("Authorization", format!("Basic {}", config.get_basic_auth()))
+            .header(
+                "Authorization",
+                format!("Basic {}", config.get_basic_auth()),
+            )
             .header("User-Agent", "calendar-app/0.1.0")
             .send()
             .await
@@ -222,9 +192,9 @@ mod tests {
 
         // For Baikal/CalDAV servers, we should see DAV headers
         assert!(
-            response.headers().contains_key("dav") || 
-            response.headers().contains_key("DAV") ||
-            response.status().is_success(),
+            response.headers().contains_key("dav")
+                || response.headers().contains_key("DAV")
+                || response.status().is_success(),
             "Server doesn't appear to be a CalDAV server - missing DAV headers"
         );
 
@@ -232,14 +202,18 @@ mod tests {
     }
 
     /// Test making a PROPFIND request to discover calendars
-    /// 
+    ///
     /// This test requires a valid .env file and makes an actual CalDAV PROPFIND request
-    /// 
+    ///
     /// Run with: `cargo test test_propfind_calendars`
     #[tokio::test]
     async fn test_propfind_calendars() {
-        let config = CalDAVConfig::from_env()
-            .expect("Failed to load CalDAV config from environment");
+        // Use test config - update these values to test with real server
+        let config = CalDAVConfig::new(
+            "https://example.com".to_string(),
+            "test_user".to_string(),
+            "test_password".to_string(),
+        );
 
         let client = reqwest::Client::new();
 
@@ -255,8 +229,14 @@ mod tests {
 </d:propfind>"#;
 
         let response = client
-            .request(reqwest::Method::from_bytes(b"PROPFIND").unwrap(), &config.server_url)
-            .header("Authorization", format!("Basic {}", config.get_basic_auth()))
+            .request(
+                reqwest::Method::from_bytes(b"PROPFIND").unwrap(),
+                &config.server_url,
+            )
+            .header(
+                "Authorization",
+                format!("Basic {}", config.get_basic_auth()),
+            )
             .header("Content-Type", "application/xml")
             .header("Depth", "1")
             .header("User-Agent", "calendar-app/0.1.0")
@@ -267,7 +247,7 @@ mod tests {
 
         let status = response.status();
         println!("PROPFIND Response status: {}", status);
-        
+
         let body = response.text().await.expect("Failed to read response body");
         println!("PROPFIND Response body: {}", body);
 
@@ -279,8 +259,11 @@ mod tests {
         );
 
         // The response should contain XML with calendar information
-        assert!(body.contains("calendar"), "Response should contain calendar information");
+        assert!(
+            body.contains("calendar"),
+            "Response should contain calendar information"
+        );
 
         println!("✓ PROPFIND calendars test passed!");
     }
-}
+}

backend/src/db.rs

@@ -0,0 +1,305 @@
+use chrono::{DateTime, Utc};
+use serde::{Deserialize, Serialize};
+use sqlx::sqlite::{SqlitePool, SqlitePoolOptions};
+use sqlx::{FromRow, Result};
+use std::sync::Arc;
+use uuid::Uuid;
+
+/// Database connection pool wrapper
+#[derive(Clone)]
+pub struct Database {
+    pool: Arc<SqlitePool>,
+}
+
+impl Database {
+    /// Create a new database connection pool
+    pub async fn new(database_url: &str) -> Result<Self> {
+        let pool = SqlitePoolOptions::new()
+            .max_connections(5)
+            .connect(database_url)
+            .await?;
+
+        // Run migrations
+        sqlx::migrate!("./migrations").run(&pool).await?;
+
+        Ok(Self {
+            pool: Arc::new(pool),
+        })
+    }
+
+    /// Get a reference to the connection pool
+    pub fn pool(&self) -> &SqlitePool {
+        &self.pool
+    }
+}
+
+/// User model representing a CalDAV user
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow)]
+pub struct User {
+    pub id: String, // UUID as string for SQLite
+    pub username: String,
+    pub server_url: String,
+    pub created_at: DateTime<Utc>,
+}
+
+impl User {
+    /// Create a new user with generated UUID
+    pub fn new(username: String, server_url: String) -> Self {
+        Self {
+            id: Uuid::new_v4().to_string(),
+            username,
+            server_url,
+            created_at: Utc::now(),
+        }
+    }
+}
+
+/// Session model for user sessions
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow)]
+pub struct Session {
+    pub id: String,      // UUID as string
+    pub user_id: String, // Foreign key to User
+    pub token: String,   // Session token
+    pub created_at: DateTime<Utc>,
+    pub expires_at: DateTime<Utc>,
+    pub last_accessed: DateTime<Utc>,
+}
+
+impl Session {
+    /// Create a new session for a user
+    pub fn new(user_id: String, token: String, expires_in_hours: i64) -> Self {
+        let now = Utc::now();
+        Self {
+            id: Uuid::new_v4().to_string(),
+            user_id,
+            token,
+            created_at: now,
+            expires_at: now + chrono::Duration::hours(expires_in_hours),
+            last_accessed: now,
+        }
+    }
+
+    /// Check if the session has expired
+    pub fn is_expired(&self) -> bool {
+        Utc::now() > self.expires_at
+    }
+}
+
+/// User preferences model
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow)]
+pub struct UserPreferences {
+    pub user_id: String,
+    pub calendar_selected_date: Option<String>,
+    pub calendar_time_increment: Option<i32>,
+    pub calendar_view_mode: Option<String>,
+    pub calendar_theme: Option<String>,
+    pub calendar_colors: Option<String>, // JSON string
+    pub updated_at: DateTime<Utc>,
+}
+
+impl UserPreferences {
+    /// Create default preferences for a new user
+    pub fn default_for_user(user_id: String) -> Self {
+        Self {
+            user_id,
+            calendar_selected_date: None,
+            calendar_time_increment: Some(15),
+            calendar_view_mode: Some("month".to_string()),
+            calendar_theme: Some("light".to_string()),
+            calendar_colors: None,
+            updated_at: Utc::now(),
+        }
+    }
+}
+
+/// Repository for User operations
+pub struct UserRepository<'a> {
+    db: &'a Database,
+}
+
+impl<'a> UserRepository<'a> {
+    pub fn new(db: &'a Database) -> Self {
+        Self { db }
+    }
+
+    /// Find or create a user by username and server URL
+    pub async fn find_or_create(
+        &self,
+        username: &str,
+        server_url: &str,
+    ) -> Result<User> {
+        // Try to find existing user
+        let existing = sqlx::query_as::<_, User>(
+            "SELECT * FROM users WHERE username = ? AND server_url = ?",
+        )
+        .bind(username)
+        .bind(server_url)
+        .fetch_optional(self.db.pool())
+        .await?;
+
+        if let Some(user) = existing {
+            Ok(user)
+        } else {
+            // Create new user
+            let user = User::new(username.to_string(), server_url.to_string());
+            
+            sqlx::query(
+                "INSERT INTO users (id, username, server_url, created_at) VALUES (?, ?, ?, ?)",
+            )
+            .bind(&user.id)
+            .bind(&user.username)
+            .bind(&user.server_url)
+            .bind(&user.created_at)
+            .execute(self.db.pool())
+            .await?;
+
+            Ok(user)
+        }
+    }
+
+    /// Find a user by ID
+    pub async fn find_by_id(&self, user_id: &str) -> Result<Option<User>> {
+        sqlx::query_as::<_, User>("SELECT * FROM users WHERE id = ?")
+            .bind(user_id)
+            .fetch_optional(self.db.pool())
+            .await
+    }
+}
+
+/// Repository for Session operations
+pub struct SessionRepository<'a> {
+    db: &'a Database,
+}
+
+impl<'a> SessionRepository<'a> {
+    pub fn new(db: &'a Database) -> Self {
+        Self { db }
+    }
+
+    /// Create a new session
+    pub async fn create(&self, session: &Session) -> Result<()> {
+        sqlx::query(
+            "INSERT INTO sessions (id, user_id, token, created_at, expires_at, last_accessed) 
+             VALUES (?, ?, ?, ?, ?, ?)",
+        )
+        .bind(&session.id)
+        .bind(&session.user_id)
+        .bind(&session.token)
+        .bind(&session.created_at)
+        .bind(&session.expires_at)
+        .bind(&session.last_accessed)
+        .execute(self.db.pool())
+        .await?;
+
+        Ok(())
+    }
+
+    /// Find a session by token and update last_accessed
+    pub async fn find_by_token(&self, token: &str) -> Result<Option<Session>> {
+        let session = sqlx::query_as::<_, Session>("SELECT * FROM sessions WHERE token = ?")
+            .bind(token)
+            .fetch_optional(self.db.pool())
+            .await?;
+
+        if let Some(ref s) = session {
+            if !s.is_expired() {
+                // Update last_accessed time
+                sqlx::query("UPDATE sessions SET last_accessed = ? WHERE id = ?")
+                    .bind(Utc::now())
+                    .bind(&s.id)
+                    .execute(self.db.pool())
+                    .await?;
+            }
+        }
+
+        Ok(session)
+    }
+
+    /// Delete a session (logout)
+    pub async fn delete(&self, token: &str) -> Result<()> {
+        sqlx::query("DELETE FROM sessions WHERE token = ?")
+            .bind(token)
+            .execute(self.db.pool())
+            .await?;
+
+        Ok(())
+    }
+
+    /// Clean up expired sessions
+    pub async fn cleanup_expired(&self) -> Result<u64> {
+        let result = sqlx::query("DELETE FROM sessions WHERE expires_at < ?")
+            .bind(Utc::now())
+            .execute(self.db.pool())
+            .await?;
+
+        Ok(result.rows_affected())
+    }
+}
+
+/// Repository for UserPreferences operations
+pub struct PreferencesRepository<'a> {
+    db: &'a Database,
+}
+
+impl<'a> PreferencesRepository<'a> {
+    pub fn new(db: &'a Database) -> Self {
+        Self { db }
+    }
+
+    /// Get user preferences, creating defaults if not exist
+    pub async fn get_or_create(&self, user_id: &str) -> Result<UserPreferences> {
+        let existing = sqlx::query_as::<_, UserPreferences>(
+            "SELECT * FROM user_preferences WHERE user_id = ?",
+        )
+        .bind(user_id)
+        .fetch_optional(self.db.pool())
+        .await?;
+
+        if let Some(prefs) = existing {
+            Ok(prefs)
+        } else {
+            // Create default preferences
+            let prefs = UserPreferences::default_for_user(user_id.to_string());
+            
+            sqlx::query(
+                "INSERT INTO user_preferences 
+                 (user_id, calendar_selected_date, calendar_time_increment, 
+                  calendar_view_mode, calendar_theme, calendar_colors, updated_at) 
+                 VALUES (?, ?, ?, ?, ?, ?, ?)",
+            )
+            .bind(&prefs.user_id)
+            .bind(&prefs.calendar_selected_date)
+            .bind(&prefs.calendar_time_increment)
+            .bind(&prefs.calendar_view_mode)
+            .bind(&prefs.calendar_theme)
+            .bind(&prefs.calendar_colors)
+            .bind(&prefs.updated_at)
+            .execute(self.db.pool())
+            .await?;
+
+            Ok(prefs)
+        }
+    }
+
+    /// Update user preferences
+    pub async fn update(&self, prefs: &UserPreferences) -> Result<()> {
+        sqlx::query(
+            "UPDATE user_preferences 
+             SET calendar_selected_date = ?, calendar_time_increment = ?, 
+                 calendar_view_mode = ?, calendar_theme = ?, 
+                 calendar_colors = ?, updated_at = ?
+             WHERE user_id = ?",
+        )
+        .bind(&prefs.calendar_selected_date)
+        .bind(&prefs.calendar_time_increment)
+        .bind(&prefs.calendar_view_mode)
+        .bind(&prefs.calendar_theme)
+        .bind(&prefs.calendar_colors)
+        .bind(Utc::now())
+        .bind(&prefs.user_id)
+        .execute(self.db.pool())
+        .await?;
+
+        Ok(())
+    }
+}

backend/src/debug_caldav.rs

@@ -2,7 +2,12 @@ use crate::calendar::CalDAVClient;
 use crate::config::CalDAVConfig;
 
 pub async fn debug_caldav_fetch() -> Result<(), Box<dyn std::error::Error>> {
-    let config = CalDAVConfig::from_env()?;
+    // Use debug/test configuration
+    let config = CalDAVConfig::new(
+        "https://example.com".to_string(),
+        "debug_user".to_string(),
+        "debug_password".to_string()
+    );
     let client = CalDAVClient::new(config);
     
     println!("=== DEBUG: CalDAV Fetch ===");

backend/src/handlers.rs

@@ -2,9 +2,11 @@
 mod auth;
 mod calendar;
 mod events;
+mod preferences;
 mod series;
 
-pub use auth::{login, verify_token, get_user_info};
+pub use auth::{get_user_info, login, verify_token};
 pub use calendar::{create_calendar, delete_calendar};
-pub use events::{get_calendar_events, refresh_event, create_event, update_event, delete_event};
-pub use series::{create_event_series, update_event_series, delete_event_series};
+pub use events::{create_event, delete_event, get_calendar_events, refresh_event, update_event};
+pub use preferences::{get_preferences, logout, update_preferences};
+pub use series::{create_event_series, delete_event_series, update_event_series};

backend/src/handlers/auth.rs

@@ -1,33 +1,38 @@
-use axum::{
-    extract::State,
-    http::HeaderMap,
-    response::Json,
-};
+use axum::{extract::State, http::HeaderMap, response::Json};
 use std::sync::Arc;
 
-use crate::{AppState, models::{CalDAVLoginRequest, AuthResponse, ApiError, UserInfo, CalendarInfo}};
 use crate::calendar::CalDAVClient;
 use crate::config::CalDAVConfig;
+use crate::{
+    models::{ApiError, AuthResponse, CalDAVLoginRequest, CalendarInfo, UserInfo},
+    AppState,
+};
 
 pub fn extract_bearer_token(headers: &HeaderMap) -> Result<String, ApiError> {
-    let auth_header = headers.get("authorization")
+    let auth_header = headers
+        .get("authorization")
         .ok_or_else(|| ApiError::Unauthorized("Missing Authorization header".to_string()))?;
-    
-    let auth_str = auth_header.to_str()
+
+    let auth_str = auth_header
+        .to_str()
         .map_err(|_| ApiError::BadRequest("Invalid Authorization header".to_string()))?;
-    
+
     if let Some(token) = auth_str.strip_prefix("Bearer ") {
         Ok(token.to_string())
     } else {
-        Err(ApiError::BadRequest("Authorization header must be Bearer token".to_string()))
+        Err(ApiError::BadRequest(
+            "Authorization header must be Bearer token".to_string(),
+        ))
     }
 }
 
 pub fn extract_password_header(headers: &HeaderMap) -> Result<String, ApiError> {
-    let password_header = headers.get("x-caldav-password")
+    let password_header = headers
+        .get("x-caldav-password")
         .ok_or_else(|| ApiError::BadRequest("Missing X-CalDAV-Password header".to_string()))?;
-    
-    password_header.to_str()
+
+    password_header
+        .to_str()
         .map(|s| s.to_string())
         .map_err(|_| ApiError::BadRequest("Invalid X-CalDAV-Password header".to_string()))
 }
@@ -40,39 +45,13 @@ pub async fn login(
     println!("  Server URL: {}", request.server_url);
     println!("  Username: {}", request.username);
     println!("  Password length: {}", request.password.len());
-    
-    // Basic validation
-    if request.username.is_empty() || request.password.is_empty() || request.server_url.is_empty() {
-        return Err(ApiError::BadRequest("Username, password, and server URL are required".to_string()));
-    }
-    
-    println!("✅ Input validation passed");
-    
-    // Create a token using the auth service
-    println!("📝 Created CalDAV config");
-    
-    // First verify the credentials are valid by attempting to discover calendars
-    let config = CalDAVConfig {
-        server_url: request.server_url.clone(),
-        username: request.username.clone(),
-        password: request.password.clone(),
-        calendar_path: None,
-        tasks_path: None,
-    };
-    let client = CalDAVClient::new(config);
-    client.discover_calendars()
-        .await
-        .map_err(|e| ApiError::Unauthorized(format!("Authentication failed: {}", e)))?;
-    
-    let token = state.auth_service.generate_token(&request.username, &request.server_url)?;
-    
-    println!("🔗 Created CalDAV client, attempting to discover calendars...");
-    
-    Ok(Json(AuthResponse {
-        token,
-        username: request.username,
-        server_url: request.server_url,
-    }))
+
+    // Use the auth service login method which now handles database, sessions, and preferences
+    let response = state.auth_service.login(request).await?;
+
+    println!("✅ Login successful with session management");
+
+    Ok(Json(response))
 }
 
 pub async fn verify_token(
@@ -81,7 +60,7 @@ pub async fn verify_token(
 ) -> Result<Json<serde_json::Value>, ApiError> {
     let token = extract_bearer_token(&headers)?;
     let is_valid = state.auth_service.verify_token(&token).is_ok();
-    
+
     Ok(Json(serde_json::json!({ "valid": is_valid })))
 }
 
@@ -91,26 +70,33 @@ pub async fn get_user_info(
 ) -> Result<Json<UserInfo>, ApiError> {
     let token = extract_bearer_token(&headers)?;
     let password = extract_password_header(&headers)?;
-    
+
     // Create CalDAV config from token and password
-    let config = state.auth_service.caldav_config_from_token(&token, &password)?;
+    let config = state
+        .auth_service
+        .caldav_config_from_token(&token, &password)?;
     let client = CalDAVClient::new(config.clone());
-    
+
     // Discover calendars
-    let calendar_paths = client.discover_calendars()
+    let calendar_paths = client
+        .discover_calendars()
         .await
         .map_err(|e| ApiError::Internal(format!("Failed to discover calendars: {}", e)))?;
-        
-    println!("✅ Authentication successful! Found {} calendars", calendar_paths.len());
-    
-    let calendars: Vec<CalendarInfo> = calendar_paths.iter().map(|path| {
-        CalendarInfo {
+
+    println!(
+        "✅ Authentication successful! Found {} calendars",
+        calendar_paths.len()
+    );
+
+    let calendars: Vec<CalendarInfo> = calendar_paths
+        .iter()
+        .map(|path| CalendarInfo {
             path: path.clone(),
             display_name: extract_calendar_name(path),
             color: generate_calendar_color(path),
-        }
-    }).collect();
-    
+        })
+        .collect();
+
     Ok(Json(UserInfo {
         username: config.username,
         server_url: config.server_url,
@@ -125,15 +111,14 @@ fn generate_calendar_color(path: &str) -> String {
     for byte in path.bytes() {
         hash = hash.wrapping_mul(31).wrapping_add(byte as u32);
     }
-    
+
     // Define a set of pleasant colors
     let colors = [
-        "#3B82F6", "#10B981", "#F59E0B", "#EF4444", "#8B5CF6",
-        "#06B6D4", "#84CC16", "#F97316", "#EC4899", "#6366F1",
-        "#14B8A6", "#F3B806", "#8B5A2B", "#6B7280", "#DC2626",
-        "#7C3AED", "#059669", "#D97706", "#BE185D", "#4F46E5"
+        "#3B82F6", "#10B981", "#F59E0B", "#EF4444", "#8B5CF6", "#06B6D4", "#84CC16", "#F97316",
+        "#EC4899", "#6366F1", "#14B8A6", "#F3B806", "#8B5A2B", "#6B7280", "#DC2626", "#7C3AED",
+        "#059669", "#D97706", "#BE185D", "#4F46E5",
     ];
-    
+
     colors[(hash as usize) % colors.len()].to_string()
 }
 
@@ -156,4 +141,4 @@ fn extract_calendar_name(path: &str) -> String {
         })
         .collect::<Vec<String>>()
         .join(" ")
-}
+}

backend/src/handlers/calendar.rs

@@ -1,12 +1,14 @@
-use axum::{
-    extract::State,
-    http::HeaderMap,
-    response::Json,
-};
+use axum::{extract::State, http::HeaderMap, response::Json};
 use std::sync::Arc;
 
-use crate::{AppState, models::{ApiError, CreateCalendarRequest, CreateCalendarResponse, DeleteCalendarRequest, DeleteCalendarResponse}};
 use crate::calendar::CalDAVClient;
+use crate::{
+    models::{
+        ApiError, CreateCalendarRequest, CreateCalendarResponse, DeleteCalendarRequest,
+        DeleteCalendarResponse,
+    },
+    AppState,
+};
 
 use super::auth::{extract_bearer_token, extract_password_header};
 
@@ -20,22 +22,36 @@ pub async fn create_calendar(
 
     // Validate request
     if request.name.trim().is_empty() {
-        return Err(ApiError::BadRequest("Calendar name is required".to_string()));
+        return Err(ApiError::BadRequest(
+            "Calendar name is required".to_string(),
+        ));
     }
 
     // Create CalDAV config from token and password
-    let config = state.auth_service.caldav_config_from_token(&token, &password)?;
+    let config = state
+        .auth_service
+        .caldav_config_from_token(&token, &password)?;
     let client = CalDAVClient::new(config);
 
     // Create calendar on CalDAV server
-    match client.create_calendar(&request.name, request.description.as_deref(), request.color.as_deref()).await {
+    match client
+        .create_calendar(
+            &request.name,
+            request.description.as_deref(),
+            request.color.as_deref(),
+        )
+        .await
+    {
         Ok(_) => Ok(Json(CreateCalendarResponse {
             success: true,
             message: "Calendar created successfully".to_string(),
         })),
         Err(e) => {
             eprintln!("Failed to create calendar: {}", e);
-            Err(ApiError::Internal(format!("Failed to create calendar: {}", e)))
+            Err(ApiError::Internal(format!(
+                "Failed to create calendar: {}",
+                e
+            )))
         }
     }
 }
@@ -50,11 +66,15 @@ pub async fn delete_calendar(
 
     // Validate request
     if request.path.trim().is_empty() {
-        return Err(ApiError::BadRequest("Calendar path is required".to_string()));
+        return Err(ApiError::BadRequest(
+            "Calendar path is required".to_string(),
+        ));
     }
 
     // Create CalDAV config from token and password
-    let config = state.auth_service.caldav_config_from_token(&token, &password)?;
+    let config = state
+        .auth_service
+        .caldav_config_from_token(&token, &password)?;
     let client = CalDAVClient::new(config);
 
     // Delete calendar on CalDAV server
@@ -65,7 +85,10 @@ pub async fn delete_calendar(
         })),
         Err(e) => {
             eprintln!("Failed to delete calendar: {}", e);
-            Err(ApiError::Internal(format!("Failed to delete calendar: {}", e)))
+            Err(ApiError::Internal(format!(
+                "Failed to delete calendar: {}",
+                e
+            )))
         }
     }
-}
+}

backend/src/handlers/events.rs

@@ -1,15 +1,23 @@
 use axum::{
-    extract::{State, Query, Path},
+    extract::{Path, Query, State},
     http::HeaderMap,
     response::Json,
 };
+use chrono::Datelike;
 use serde::Deserialize;
 use std::sync::Arc;
-use chrono::Datelike;
 
-use calendar_models::{VEvent, EventStatus, EventClass, CalendarUser, Attendee, VAlarm, AlarmAction, AlarmTrigger};
-use crate::{AppState, models::{ApiError, DeleteEventRequest, DeleteEventResponse, CreateEventRequest, CreateEventResponse, UpdateEventRequest, UpdateEventResponse}};
 use crate::calendar::{CalDAVClient, CalendarEvent};
+use crate::{
+    models::{
+        ApiError, CreateEventRequest, CreateEventResponse, DeleteEventRequest, DeleteEventResponse,
+        UpdateEventRequest, UpdateEventResponse,
+    },
+    AppState,
+};
+use calendar_models::{
+    AlarmAction, AlarmTrigger, Attendee, CalendarUser, EventClass, EventStatus, VAlarm, VEvent,
+};
 
 use super::auth::{extract_bearer_token, extract_password_header};
 
@@ -28,20 +36,23 @@ pub async fn get_calendar_events(
     let token = extract_bearer_token(&headers)?;
     let password = extract_password_header(&headers)?;
     println!("🔑 API call with password length: {}", password.len());
-    
+
     // Create CalDAV config from token and password
-    let config = state.auth_service.caldav_config_from_token(&token, &password)?;
+    let config = state
+        .auth_service
+        .caldav_config_from_token(&token, &password)?;
     let client = CalDAVClient::new(config);
-    
+
     // Discover calendars if needed
-    let calendar_paths = client.discover_calendars()
+    let calendar_paths = client
+        .discover_calendars()
         .await
         .map_err(|e| ApiError::Internal(format!("Failed to discover calendars: {}", e)))?;
-    
+
     if calendar_paths.is_empty() {
         return Ok(Json(vec![])); // No calendars found
     }
-    
+
     // Fetch events from all calendars
     let mut all_events = Vec::new();
     for calendar_path in &calendar_paths {
@@ -54,12 +65,15 @@ pub async fn get_calendar_events(
                 all_events.extend(events);
             }
             Err(e) => {
-                eprintln!("Failed to fetch events from calendar {}: {}", calendar_path, e);
+                eprintln!(
+                    "Failed to fetch events from calendar {}: {}",
+                    calendar_path, e
+                );
                 // Continue with other calendars instead of failing completely
             }
         }
     }
-    
+
     // If year and month are specified, filter events
     if let (Some(year), Some(month)) = (params.year, params.month) {
         all_events.retain(|event| {
@@ -68,7 +82,7 @@ pub async fn get_calendar_events(
             event_year == year && event_month == month
         });
     }
-    
+
     println!("📅 Returning {} events", all_events.len());
     Ok(Json(all_events))
 }
@@ -80,16 +94,19 @@ pub async fn refresh_event(
 ) -> Result<Json<Option<CalendarEvent>>, ApiError> {
     let token = extract_bearer_token(&headers)?;
     let password = extract_password_header(&headers)?;
-    
+
     // Create CalDAV config from token and password
-    let config = state.auth_service.caldav_config_from_token(&token, &password)?;
+    let config = state
+        .auth_service
+        .caldav_config_from_token(&token, &password)?;
     let client = CalDAVClient::new(config);
-    
+
     // Discover calendars
-    let calendar_paths = client.discover_calendars()
+    let calendar_paths = client
+        .discover_calendars()
         .await
         .map_err(|e| ApiError::Internal(format!("Failed to discover calendars: {}", e)))?;
-    
+
     // Search for the event by UID across all calendars
     for calendar_path in &calendar_paths {
         if let Ok(Some(mut event)) = client.fetch_event_by_uid(calendar_path, &uid).await {
@@ -97,18 +114,25 @@ pub async fn refresh_event(
             return Ok(Json(Some(event)));
         }
     }
-    
+
     Ok(Json(None))
 }
 
-async fn fetch_event_by_href(client: &CalDAVClient, calendar_path: &str, event_href: &str) -> Result<Option<CalendarEvent>, crate::calendar::CalDAVError> {
+async fn fetch_event_by_href(
+    client: &CalDAVClient,
+    calendar_path: &str,
+    event_href: &str,
+) -> Result<Option<CalendarEvent>, crate::calendar::CalDAVError> {
     // This is a simplified implementation - in a real scenario, you'd want to fetch the specific event by href
     // For now, we'll fetch all events and find the matching one by href (inefficient but functional)
     let events = client.fetch_events(calendar_path).await?;
-    
+
     println!("🔍 fetch_event_by_href: looking for href='{}'", event_href);
-    println!("🔍 Available events with hrefs: {:?}", events.iter().map(|e| (&e.uid, &e.href)).collect::<Vec<_>>());
-    
+    println!(
+        "🔍 Available events with hrefs: {:?}",
+        events.iter().map(|e| (&e.uid, &e.href)).collect::<Vec<_>>()
+    );
+
     // First try to match by exact href
     for event in &events {
         if let Some(stored_href) = &event.href {
@@ -118,22 +142,25 @@ async fn fetch_event_by_href(client: &CalDAVClient, calendar_path: &str, event_h
             }
         }
     }
-    
+
     // Fallback: try to match by UID extracted from href filename
     let filename = event_href.split('/').last().unwrap_or(event_href);
     let uid_from_href = filename.trim_end_matches(".ics");
-    
-    println!("🔍 Fallback: trying UID match. filename='{}', uid='{}'", filename, uid_from_href);
-    
+
+    println!(
+        "🔍 Fallback: trying UID match. filename='{}', uid='{}'",
+        filename, uid_from_href
+    );
+
     for event in events {
         if event.uid == uid_from_href {
             println!("✅ Found matching event by UID: {}", event.uid);
             return Ok(Some(event));
         }
     }
-    
+
     println!("❌ No matching event found for href: {}", event_href);
-    
+
     Ok(None)
 }
 
@@ -146,41 +173,63 @@ pub async fn delete_event(
     let password = extract_password_header(&headers)?;
 
     // Create CalDAV config from token and password
-    let config = state.auth_service.caldav_config_from_token(&token, &password)?;
+    let config = state
+        .auth_service
+        .caldav_config_from_token(&token, &password)?;
     let client = CalDAVClient::new(config);
 
     // Handle different delete actions for recurring events
     match request.delete_action.as_str() {
         "delete_this" => {
-            if let Some(event) = fetch_event_by_href(&client, &request.calendar_path, &request.event_href).await
-                .map_err(|e| ApiError::Internal(format!("Failed to fetch event: {}", e)))? {
-                
+            if let Some(event) =
+                fetch_event_by_href(&client, &request.calendar_path, &request.event_href)
+                    .await
+                    .map_err(|e| ApiError::Internal(format!("Failed to fetch event: {}", e)))?
+            {
                 // Check if this is a recurring event
                 if event.rrule.is_some() && !event.rrule.as_ref().unwrap().is_empty() {
                     // Recurring event - add EXDATE for this occurrence
                     if let Some(occurrence_date) = &request.occurrence_date {
-                        let exception_utc = if let Ok(date) = chrono::DateTime::parse_from_rfc3339(occurrence_date) {
+                        let exception_utc = if let Ok(date) =
+                            chrono::DateTime::parse_from_rfc3339(occurrence_date)
+                        {
                             // RFC3339 format (with time and timezone)
                             date.with_timezone(&chrono::Utc)
-                        } else if let Ok(naive_date) = chrono::NaiveDate::parse_from_str(occurrence_date, "%Y-%m-%d") {
+                        } else if let Ok(naive_date) =
+                            chrono::NaiveDate::parse_from_str(occurrence_date, "%Y-%m-%d")
+                        {
                             // Simple date format (YYYY-MM-DD)
                             naive_date.and_hms_opt(0, 0, 0).unwrap().and_utc()
                         } else {
                             return Err(ApiError::BadRequest(format!("Invalid occurrence date format: {}. Expected RFC3339 or YYYY-MM-DD", occurrence_date)));
                         };
-                        
+
                         let mut updated_event = event;
                         updated_event.exdate.push(exception_utc);
-                        
-                        println!("🔄 Adding EXDATE {} to recurring event {}", exception_utc.format("%Y%m%dT%H%M%SZ"), updated_event.uid);
-                        
+
+                        println!(
+                            "🔄 Adding EXDATE {} to recurring event {}",
+                            exception_utc.format("%Y%m%dT%H%M%SZ"),
+                            updated_event.uid
+                        );
+
                         // Update the event with the new EXDATE
-                        client.update_event(&request.calendar_path, &updated_event, &request.event_href)
+                        client
+                            .update_event(
+                                &request.calendar_path,
+                                &updated_event,
+                                &request.event_href,
+                            )
                             .await
-                            .map_err(|e| ApiError::Internal(format!("Failed to update event with EXDATE: {}", e)))?;
-                        
+                            .map_err(|e| {
+                                ApiError::Internal(format!(
+                                    "Failed to update event with EXDATE: {}",
+                                    e
+                                ))
+                            })?;
+
                         println!("✅ Successfully updated recurring event with EXDATE");
-                        
+
                         Ok(Json(DeleteEventResponse {
                             success: true,
                             message: "Single occurrence deleted successfully".to_string(),
@@ -191,13 +240,16 @@ pub async fn delete_event(
                 } else {
                     // Non-recurring event - delete the entire event
                     println!("🗑️ Deleting non-recurring event: {}", event.uid);
-                    
-                    client.delete_event(&request.calendar_path, &request.event_href)
+
+                    client
+                        .delete_event(&request.calendar_path, &request.event_href)
                         .await
-                        .map_err(|e| ApiError::Internal(format!("Failed to delete event: {}", e)))?;
-                    
+                        .map_err(|e| {
+                            ApiError::Internal(format!("Failed to delete event: {}", e))
+                        })?;
+
                     println!("✅ Successfully deleted non-recurring event");
-                    
+
                     Ok(Json(DeleteEventResponse {
                         success: true,
                         message: "Event deleted successfully".to_string(),
@@ -206,70 +258,99 @@ pub async fn delete_event(
             } else {
                 Err(ApiError::NotFound("Event not found".to_string()))
             }
-        },
+        }
         "delete_following" => {
             // For "this and following" deletion, we need to:
             // 1. Fetch the recurring event
             // 2. Modify the RRULE to end before this occurrence
             // 3. Update the event
 
-            if let Some(mut event) = fetch_event_by_href(&client, &request.calendar_path, &request.event_href).await
-                .map_err(|e| ApiError::Internal(format!("Failed to fetch event: {}", e)))? {
-                
+            if let Some(mut event) =
+                fetch_event_by_href(&client, &request.calendar_path, &request.event_href)
+                    .await
+                    .map_err(|e| ApiError::Internal(format!("Failed to fetch event: {}", e)))?
+            {
                 if let Some(occurrence_date) = &request.occurrence_date {
-                    let until_date = if let Ok(date) = chrono::DateTime::parse_from_rfc3339(occurrence_date) {
+                    let until_date = if let Ok(date) =
+                        chrono::DateTime::parse_from_rfc3339(occurrence_date)
+                    {
                         // RFC3339 format (with time and timezone)
                         date.with_timezone(&chrono::Utc)
-                    } else if let Ok(naive_date) = chrono::NaiveDate::parse_from_str(occurrence_date, "%Y-%m-%d") {
+                    } else if let Ok(naive_date) =
+                        chrono::NaiveDate::parse_from_str(occurrence_date, "%Y-%m-%d")
+                    {
                         // Simple date format (YYYY-MM-DD)
                         naive_date.and_hms_opt(0, 0, 0).unwrap().and_utc()
                     } else {
-                        return Err(ApiError::BadRequest(format!("Invalid occurrence date format: {}. Expected RFC3339 or YYYY-MM-DD", occurrence_date)));
+                        return Err(ApiError::BadRequest(format!(
+                            "Invalid occurrence date format: {}. Expected RFC3339 or YYYY-MM-DD",
+                            occurrence_date
+                        )));
                     };
-                    
+
                     // Modify the RRULE to add an UNTIL clause
                     if let Some(rrule) = &event.rrule {
                         // Remove existing UNTIL if present and add new one
-                        let parts: Vec<&str> = rrule.split(';').filter(|part| {
-                            !part.starts_with("UNTIL=") && !part.starts_with("COUNT=")
-                        }).collect();
-                        
-                        let new_rrule = format!("{};UNTIL={}", parts.join(";"), until_date.format("%Y%m%dT%H%M%SZ"));
+                        let parts: Vec<&str> = rrule
+                            .split(';')
+                            .filter(|part| {
+                                !part.starts_with("UNTIL=") && !part.starts_with("COUNT=")
+                            })
+                            .collect();
+
+                        let new_rrule = format!(
+                            "{};UNTIL={}",
+                            parts.join(";"),
+                            until_date.format("%Y%m%dT%H%M%SZ")
+                        );
                         event.rrule = Some(new_rrule);
-                        
+
                         // Update the event with the modified RRULE
-                        client.update_event(&request.calendar_path, &event, &request.event_href)
+                        client
+                            .update_event(&request.calendar_path, &event, &request.event_href)
                             .await
-                            .map_err(|e| ApiError::Internal(format!("Failed to update event with modified RRULE: {}", e)))?;
-                        
+                            .map_err(|e| {
+                                ApiError::Internal(format!(
+                                    "Failed to update event with modified RRULE: {}",
+                                    e
+                                ))
+                            })?;
+
                         Ok(Json(DeleteEventResponse {
                             success: true,
-                            message: "This and following occurrences deleted successfully".to_string(),
+                            message: "This and following occurrences deleted successfully"
+                                .to_string(),
                         }))
                     } else {
                         // No RRULE, just delete the single event
-                        client.delete_event(&request.calendar_path, &request.event_href)
+                        client
+                            .delete_event(&request.calendar_path, &request.event_href)
                             .await
-                            .map_err(|e| ApiError::Internal(format!("Failed to delete event: {}", e)))?;
-                        
+                            .map_err(|e| {
+                                ApiError::Internal(format!("Failed to delete event: {}", e))
+                            })?;
+
                         Ok(Json(DeleteEventResponse {
                             success: true,
                             message: "Event deleted successfully".to_string(),
                         }))
                     }
                 } else {
-                    Err(ApiError::BadRequest("Occurrence date is required for following deletion".to_string()))
+                    Err(ApiError::BadRequest(
+                        "Occurrence date is required for following deletion".to_string(),
+                    ))
                 }
             } else {
                 Err(ApiError::NotFound("Event not found".to_string()))
             }
-        },
+        }
         "delete_series" | _ => {
             // Delete the entire event/series
-            client.delete_event(&request.calendar_path, &request.event_href)
+            client
+                .delete_event(&request.calendar_path, &request.event_href)
                 .await
                 .map_err(|e| ApiError::Internal(format!("Failed to delete event: {}", e)))?;
-            
+
             Ok(Json(DeleteEventResponse {
                 success: true,
                 message: "Event deleted successfully".to_string(),
@@ -283,9 +364,11 @@ pub async fn create_event(
     headers: HeaderMap,
     Json(request): Json<CreateEventRequest>,
 ) -> Result<Json<CreateEventResponse>, ApiError> {
-    println!("📝 Create event request received: title='{}', all_day={}, calendar_path={:?}", 
-             request.title, request.all_day, request.calendar_path);
-    
+    println!(
+        "📝 Create event request received: title='{}', all_day={}, calendar_path={:?}",
+        request.title, request.all_day, request.calendar_path
+    );
+
     // Extract and verify token
     let token = extract_bearer_token(&headers)?;
     let password = extract_password_header(&headers)?;
@@ -294,13 +377,17 @@ pub async fn create_event(
     if request.title.trim().is_empty() {
         return Err(ApiError::BadRequest("Event title is required".to_string()));
     }
-    
+
     if request.title.len() > 200 {
-        return Err(ApiError::BadRequest("Event title too long (max 200 characters)".to_string()));
+        return Err(ApiError::BadRequest(
+            "Event title too long (max 200 characters)".to_string(),
+        ));
     }
 
     // Create CalDAV config from token and password
-    let config = state.auth_service.caldav_config_from_token(&token, &password)?;
+    let config = state
+        .auth_service
+        .caldav_config_from_token(&token, &password)?;
     let client = CalDAVClient::new(config);
 
     // Determine which calendar to use
@@ -308,31 +395,41 @@ pub async fn create_event(
         path
     } else {
         // Use the first available calendar
-        let calendar_paths = client.discover_calendars()
+        let calendar_paths = client
+            .discover_calendars()
             .await
             .map_err(|e| ApiError::Internal(format!("Failed to discover calendars: {}", e)))?;
-        
+
         if calendar_paths.is_empty() {
-            return Err(ApiError::BadRequest("No calendars available for event creation".to_string()));
+            return Err(ApiError::BadRequest(
+                "No calendars available for event creation".to_string(),
+            ));
         }
-        
+
         calendar_paths[0].clone()
     };
 
     // Parse dates and times
-    let start_datetime = parse_event_datetime(&request.start_date, &request.start_time, request.all_day)
-        .map_err(|e| ApiError::BadRequest(format!("Invalid start date/time: {}", e)))?;
-    
+    let start_datetime =
+        parse_event_datetime(&request.start_date, &request.start_time, request.all_day)
+            .map_err(|e| ApiError::BadRequest(format!("Invalid start date/time: {}", e)))?;
+
     let end_datetime = parse_event_datetime(&request.end_date, &request.end_time, request.all_day)
         .map_err(|e| ApiError::BadRequest(format!("Invalid end date/time: {}", e)))?;
 
     // Validate that end is after start
     if end_datetime <= start_datetime {
-        return Err(ApiError::BadRequest("End date/time must be after start date/time".to_string()));
+        return Err(ApiError::BadRequest(
+            "End date/time must be after start date/time".to_string(),
+        ));
     }
 
     // Generate a unique UID for the event
-    let uid = format!("{}-{}", uuid::Uuid::new_v4(), chrono::Utc::now().timestamp());
+    let uid = format!(
+        "{}-{}",
+        uuid::Uuid::new_v4(),
+        chrono::Utc::now().timestamp()
+    );
 
     // Parse status
     let status = match request.status.to_lowercase().as_str() {
@@ -352,7 +449,8 @@ pub async fn create_event(
     let attendees: Vec<String> = if request.attendees.trim().is_empty() {
         Vec::new()
     } else {
-        request.attendees
+        request
+            .attendees
             .split(',')
             .map(|s| s.trim().to_string())
             .filter(|s| !s.is_empty())
@@ -363,7 +461,8 @@ pub async fn create_event(
     let categories: Vec<String> = if request.categories.trim().is_empty() {
         Vec::new()
     } else {
-        request.categories
+        request
+            .categories
             .split(',')
             .map(|s| s.trim().to_string())
             .filter(|s| !s.is_empty())
@@ -384,60 +483,83 @@ pub async fn create_event(
         }
     };
 
-    // Parse recurrence with BYDAY support for weekly recurrence
-    let rrule = match request.recurrence.to_uppercase().as_str() {
-        "DAILY" => Some("FREQ=DAILY".to_string()),
-        "WEEKLY" => {
-            // Handle weekly recurrence with optional BYDAY parameter
-            let mut rrule = "FREQ=WEEKLY".to_string();
-            
-            // Check if specific days are selected (recurrence_days has 7 elements: [Sun, Mon, Tue, Wed, Thu, Fri, Sat])
-            if request.recurrence_days.len() == 7 {
-                let selected_days: Vec<&str> = request.recurrence_days
-                    .iter()
-                    .enumerate()
-                    .filter_map(|(i, &selected)| {
-                        if selected {
-                            Some(match i {
-                                0 => "SU", // Sunday
-                                1 => "MO", // Monday
-                                2 => "TU", // Tuesday
-                                3 => "WE", // Wednesday
-                                4 => "TH", // Thursday
-                                5 => "FR", // Friday
-                                6 => "SA", // Saturday
-                                _ => return None,
-                            })
-                        } else {
-                            None
-                        }
-                    })
-                    .collect();
+    // Check if recurrence is already a full RRULE or just a simple type
+    let rrule = if request.recurrence.starts_with("FREQ=") {
+        // Frontend sent a complete RRULE string, use it directly
+        if request.recurrence.is_empty() {
+            None
+        } else {
+            Some(request.recurrence.clone())
+        }
+    } else {
+        // Legacy path: Parse recurrence with BYDAY support for weekly recurrence
+        match request.recurrence.to_uppercase().as_str() {
+            "DAILY" => Some("FREQ=DAILY".to_string()),
+            "WEEKLY" => {
+                // Handle weekly recurrence with optional BYDAY parameter
+                let mut rrule = "FREQ=WEEKLY".to_string();
 
-                if !selected_days.is_empty() {
-                    rrule = format!("{};BYDAY={}", rrule, selected_days.join(","));
+                // Check if specific days are selected (recurrence_days has 7 elements: [Sun, Mon, Tue, Wed, Thu, Fri, Sat])
+                if request.recurrence_days.len() == 7 {
+                    let selected_days: Vec<&str> = request
+                        .recurrence_days
+                        .iter()
+                        .enumerate()
+                        .filter_map(|(i, &selected)| {
+                            if selected {
+                                Some(match i {
+                                    0 => "SU", // Sunday
+                                    1 => "MO", // Monday
+                                    2 => "TU", // Tuesday
+                                    3 => "WE", // Wednesday
+                                    4 => "TH", // Thursday
+                                    5 => "FR", // Friday
+                                    6 => "SA", // Saturday
+                                    _ => return None,
+                                })
+                            } else {
+                                None
+                            }
+                        })
+                        .collect();
+
+                    if !selected_days.is_empty() {
+                        rrule = format!("{};BYDAY={}", rrule, selected_days.join(","));
+                    }
                 }
+
+                Some(rrule)
             }
-            
-            Some(rrule)
-        },
-        "MONTHLY" => Some("FREQ=MONTHLY".to_string()),
-        "YEARLY" => Some("FREQ=YEARLY".to_string()),
-        _ => None,
+            "MONTHLY" => Some("FREQ=MONTHLY".to_string()),
+            "YEARLY" => Some("FREQ=YEARLY".to_string()),
+            _ => None,
+        }
     };
 
     // Create the VEvent struct (RFC 5545 compliant)
     let mut event = VEvent::new(uid, start_datetime);
     event.dtend = Some(end_datetime);
-    event.summary = if request.title.trim().is_empty() { None } else { Some(request.title.clone()) };
-    event.description = if request.description.trim().is_empty() { None } else { Some(request.description) };
-    event.location = if request.location.trim().is_empty() { None } else { Some(request.location) };
+    event.summary = if request.title.trim().is_empty() {
+        None
+    } else {
+        Some(request.title.clone())
+    };
+    event.description = if request.description.trim().is_empty() {
+        None
+    } else {
+        Some(request.description)
+    };
+    event.location = if request.location.trim().is_empty() {
+        None
+    } else {
+        Some(request.location)
+    };
     event.status = Some(status);
     event.class = Some(class);
     event.priority = request.priority;
-    event.organizer = if request.organizer.trim().is_empty() { 
-        None 
-    } else { 
+    event.organizer = if request.organizer.trim().is_empty() {
+        None
+    } else {
         Some(CalendarUser {
             cal_address: request.organizer,
             common_name: None,
@@ -446,41 +568,53 @@ pub async fn create_event(
             language: None,
         })
     };
-    event.attendees = attendees.into_iter().map(|email| Attendee {
-        cal_address: email,
-        common_name: None,
-        role: None,
-        part_stat: None,
-        rsvp: None,
-        cu_type: None,
-        member: Vec::new(),
-        delegated_to: Vec::new(),
-        delegated_from: Vec::new(),
-        sent_by: None,
-        dir_entry_ref: None,
-        language: None,
-    }).collect();
+    event.attendees = attendees
+        .into_iter()
+        .map(|email| Attendee {
+            cal_address: email,
+            common_name: None,
+            role: None,
+            part_stat: None,
+            rsvp: None,
+            cu_type: None,
+            member: Vec::new(),
+            delegated_to: Vec::new(),
+            delegated_from: Vec::new(),
+            sent_by: None,
+            dir_entry_ref: None,
+            language: None,
+        })
+        .collect();
     event.categories = categories;
     event.rrule = rrule;
     event.all_day = request.all_day;
-    event.alarms = alarms.into_iter().map(|reminder| VAlarm {
-        action: AlarmAction::Display,
-        trigger: AlarmTrigger::Duration(chrono::Duration::minutes(-reminder.minutes_before as i64)),
-        duration: None,
-        repeat: None,
-        description: reminder.description,
-        summary: None,
-        attendees: Vec::new(),
-        attach: Vec::new(),
-    }).collect();
+    event.alarms = alarms
+        .into_iter()
+        .map(|reminder| VAlarm {
+            action: AlarmAction::Display,
+            trigger: AlarmTrigger::Duration(chrono::Duration::minutes(
+                -reminder.minutes_before as i64,
+            )),
+            duration: None,
+            repeat: None,
+            description: reminder.description,
+            summary: None,
+            attendees: Vec::new(),
+            attach: Vec::new(),
+        })
+        .collect();
     event.calendar_path = Some(calendar_path.clone());
 
     // Create the event on the CalDAV server
-    let event_href = client.create_event(&calendar_path, &event)
+    let event_href = client
+        .create_event(&calendar_path, &event)
         .await
         .map_err(|e| ApiError::Internal(format!("Failed to create event: {}", e)))?;
 
-    println!("✅ Event created successfully with UID: {} at href: {}", event.uid, event_href);
+    println!(
+        "✅ Event created successfully with UID: {} at href: {}",
+        event.uid, event_href
+    );
 
     Ok(Json(CreateEventResponse {
         success: true,
@@ -495,7 +629,7 @@ pub async fn update_event(
     Json(request): Json<UpdateEventRequest>,
 ) -> Result<Json<UpdateEventResponse>, ApiError> {
     // Handle update request
-    
+
     // Extract and verify token
     let token = extract_bearer_token(&headers)?;
     let password = extract_password_header(&headers)?;
@@ -504,37 +638,45 @@ pub async fn update_event(
     if request.uid.trim().is_empty() {
         return Err(ApiError::BadRequest("Event UID is required".to_string()));
     }
-    
+
     if request.title.trim().is_empty() {
         return Err(ApiError::BadRequest("Event title is required".to_string()));
     }
-    
+
     if request.title.len() > 200 {
-        return Err(ApiError::BadRequest("Event title too long (max 200 characters)".to_string()));
+        return Err(ApiError::BadRequest(
+            "Event title too long (max 200 characters)".to_string(),
+        ));
     }
 
     // Create CalDAV config from token and password
-    let config = state.auth_service.caldav_config_from_token(&token, &password)?;
+    let config = state
+        .auth_service
+        .caldav_config_from_token(&token, &password)?;
     let client = CalDAVClient::new(config);
 
     // Find the event across all calendars (or in the specified calendar)
     let calendar_paths = if let Some(path) = &request.calendar_path {
         vec![path.clone()]
     } else {
-        client.discover_calendars()
+        client
+            .discover_calendars()
             .await
             .map_err(|e| ApiError::Internal(format!("Failed to discover calendars: {}", e)))?
     };
 
     let mut found_event: Option<(CalendarEvent, String, String)> = None; // (event, calendar_path, event_href)
-    
+
     for calendar_path in &calendar_paths {
         match client.fetch_events(calendar_path).await {
             Ok(events) => {
                 for event in events {
                     if event.uid == request.uid {
                         // Use the actual href from the event, or generate one if missing
-                        let event_href = event.href.clone().unwrap_or_else(|| format!("{}.ics", event.uid));
+                        let event_href = event
+                            .href
+                            .clone()
+                            .unwrap_or_else(|| format!("{}.ics", event.uid));
                         println!("🔍 Found event {} with href: {}", event.uid, event_href);
                         found_event = Some((event, calendar_path.clone(), event_href));
                         break;
@@ -543,9 +685,12 @@ pub async fn update_event(
                 if found_event.is_some() {
                     break;
                 }
-            },
+            }
             Err(e) => {
-                eprintln!("Failed to fetch events from calendar {}: {}", calendar_path, e);
+                eprintln!(
+                    "Failed to fetch events from calendar {}: {}",
+                    calendar_path, e
+                );
                 continue;
             }
         }
@@ -555,23 +700,38 @@ pub async fn update_event(
         .ok_or_else(|| ApiError::NotFound(format!("Event with UID '{}' not found", request.uid)))?;
 
     // Parse dates and times
-    let start_datetime = parse_event_datetime(&request.start_date, &request.start_time, request.all_day)
-        .map_err(|e| ApiError::BadRequest(format!("Invalid start date/time: {}", e)))?;
-    
+    let start_datetime =
+        parse_event_datetime(&request.start_date, &request.start_time, request.all_day)
+            .map_err(|e| ApiError::BadRequest(format!("Invalid start date/time: {}", e)))?;
+
     let end_datetime = parse_event_datetime(&request.end_date, &request.end_time, request.all_day)
         .map_err(|e| ApiError::BadRequest(format!("Invalid end date/time: {}", e)))?;
 
     // Validate that end is after start
     if end_datetime <= start_datetime {
-        return Err(ApiError::BadRequest("End date/time must be after start date/time".to_string()));
+        return Err(ApiError::BadRequest(
+            "End date/time must be after start date/time".to_string(),
+        ));
     }
 
     // Update event properties
     event.dtstart = start_datetime;
     event.dtend = Some(end_datetime);
-    event.summary = if request.title.trim().is_empty() { None } else { Some(request.title) };
-    event.description = if request.description.trim().is_empty() { None } else { Some(request.description) };
-    event.location = if request.location.trim().is_empty() { None } else { Some(request.location) };
+    event.summary = if request.title.trim().is_empty() {
+        None
+    } else {
+        Some(request.title)
+    };
+    event.description = if request.description.trim().is_empty() {
+        None
+    } else {
+        Some(request.description)
+    };
+    event.location = if request.location.trim().is_empty() {
+        None
+    } else {
+        Some(request.location)
+    };
     event.all_day = request.all_day;
 
     // Parse and update status
@@ -591,11 +751,15 @@ pub async fn update_event(
     event.priority = request.priority;
 
     // Update the event on the CalDAV server
-    println!("📝 Updating event {} at calendar_path: {}, event_href: {}", event.uid, calendar_path, event_href);
-    client.update_event(&calendar_path, &event, &event_href)
+    println!(
+        "📝 Updating event {} at calendar_path: {}, event_href: {}",
+        event.uid, calendar_path, event_href
+    );
+    client
+        .update_event(&calendar_path, &event, &event_href)
         .await
         .map_err(|e| ApiError::Internal(format!("Failed to update event: {}", e)))?;
-    
+
     println!("✅ Successfully updated event {}", event.uid);
 
     Ok(Json(UpdateEventResponse {
@@ -604,27 +768,32 @@ pub async fn update_event(
     }))
 }
 
-fn parse_event_datetime(date_str: &str, time_str: &str, all_day: bool) -> Result<chrono::DateTime<chrono::Utc>, String> {
-    use chrono::{NaiveDate, NaiveTime, NaiveDateTime, Utc, TimeZone};
-    
+fn parse_event_datetime(
+    date_str: &str,
+    time_str: &str,
+    all_day: bool,
+) -> Result<chrono::DateTime<chrono::Utc>, String> {
+    use chrono::{NaiveDate, NaiveDateTime, NaiveTime, TimeZone, Utc};
+
     // Parse the date
     let date = NaiveDate::parse_from_str(date_str, "%Y-%m-%d")
         .map_err(|_| format!("Invalid date format: {}. Expected YYYY-MM-DD", date_str))?;
-    
+
     if all_day {
         // For all-day events, use midnight UTC
-        let datetime = date.and_hms_opt(0, 0, 0)
+        let datetime = date
+            .and_hms_opt(0, 0, 0)
             .ok_or_else(|| "Failed to create midnight datetime".to_string())?;
         Ok(Utc.from_utc_datetime(&datetime))
     } else {
         // Parse the time
         let time = NaiveTime::parse_from_str(time_str, "%H:%M")
             .map_err(|_| format!("Invalid time format: {}. Expected HH:MM", time_str))?;
-        
+
         // Combine date and time
         let datetime = NaiveDateTime::new(date, time);
-        
+
         // Assume local time and convert to UTC (in a real app, you'd want timezone support)
         Ok(Utc.from_utc_datetime(&datetime))
     }
-}
+}

backend/src/handlers/preferences.rs

@@ -0,0 +1,123 @@
+use axum::{
+    extract::State,
+    http::{HeaderMap, StatusCode},
+    response::IntoResponse,
+    Json,
+};
+use std::sync::Arc;
+
+use crate::{
+    db::PreferencesRepository,
+    models::{ApiError, UpdatePreferencesRequest, UserPreferencesResponse},
+    AppState,
+};
+
+/// Get user preferences
+pub async fn get_preferences(
+    State(state): State<Arc<AppState>>,
+    headers: HeaderMap,
+) -> Result<impl IntoResponse, ApiError> {
+    // Extract session token from headers
+    let session_token = headers
+        .get("X-Session-Token")
+        .and_then(|h| h.to_str().ok())
+        .ok_or_else(|| ApiError::Unauthorized("Missing session token".to_string()))?;
+
+    // Validate session and get user ID
+    let user_id = state.auth_service.validate_session(session_token).await?;
+
+    // Get preferences from database
+    let prefs_repo = PreferencesRepository::new(&state.db);
+    let preferences = prefs_repo
+        .get_or_create(&user_id)
+        .await
+        .map_err(|e| ApiError::Database(format!("Failed to get preferences: {}", e)))?;
+
+    Ok(Json(UserPreferencesResponse {
+        calendar_selected_date: preferences.calendar_selected_date,
+        calendar_time_increment: preferences.calendar_time_increment,
+        calendar_view_mode: preferences.calendar_view_mode,
+        calendar_theme: preferences.calendar_theme,
+        calendar_colors: preferences.calendar_colors,
+    }))
+}
+
+/// Update user preferences
+pub async fn update_preferences(
+    State(state): State<Arc<AppState>>,
+    headers: HeaderMap,
+    Json(request): Json<UpdatePreferencesRequest>,
+) -> Result<impl IntoResponse, ApiError> {
+    // Extract session token from headers
+    let session_token = headers
+        .get("X-Session-Token")
+        .and_then(|h| h.to_str().ok())
+        .ok_or_else(|| ApiError::Unauthorized("Missing session token".to_string()))?;
+
+    // Validate session and get user ID
+    let user_id = state.auth_service.validate_session(session_token).await?;
+
+    // Update preferences in database
+    let prefs_repo = PreferencesRepository::new(&state.db);
+    
+    let mut preferences = prefs_repo
+        .get_or_create(&user_id)
+        .await
+        .map_err(|e| ApiError::Database(format!("Failed to get preferences: {}", e)))?;
+
+    // Update only provided fields
+    if request.calendar_selected_date.is_some() {
+        preferences.calendar_selected_date = request.calendar_selected_date;
+    }
+    if request.calendar_time_increment.is_some() {
+        preferences.calendar_time_increment = request.calendar_time_increment;
+    }
+    if request.calendar_view_mode.is_some() {
+        preferences.calendar_view_mode = request.calendar_view_mode;
+    }
+    if request.calendar_theme.is_some() {
+        preferences.calendar_theme = request.calendar_theme;
+    }
+    if request.calendar_colors.is_some() {
+        preferences.calendar_colors = request.calendar_colors;
+    }
+
+    prefs_repo
+        .update(&preferences)
+        .await
+        .map_err(|e| ApiError::Database(format!("Failed to update preferences: {}", e)))?;
+
+    Ok((
+        StatusCode::OK,
+        Json(UserPreferencesResponse {
+            calendar_selected_date: preferences.calendar_selected_date,
+            calendar_time_increment: preferences.calendar_time_increment,
+            calendar_view_mode: preferences.calendar_view_mode,
+            calendar_theme: preferences.calendar_theme,
+            calendar_colors: preferences.calendar_colors,
+        }),
+    ))
+}
+
+/// Logout user
+pub async fn logout(
+    State(state): State<Arc<AppState>>,
+    headers: HeaderMap,
+) -> Result<impl IntoResponse, ApiError> {
+    // Extract session token from headers
+    let session_token = headers
+        .get("X-Session-Token")
+        .and_then(|h| h.to_str().ok())
+        .ok_or_else(|| ApiError::Unauthorized("Missing session token".to_string()))?;
+
+    // Delete session
+    state.auth_service.logout(session_token).await?;
+
+    Ok((
+        StatusCode::OK,
+        Json(serde_json::json!({
+            "success": true,
+            "message": "Logged out successfully"
+        })),
+    ))
+}

backend/src/lib.rs

@@ -3,33 +3,43 @@ use axum::{
     routing::{get, post},
     Router,
 };
-use tower_http::cors::{CorsLayer, Any};
 use std::sync::Arc;
+use tower_http::cors::{Any, CorsLayer};
 
 pub mod auth;
-pub mod models;
-pub mod handlers;
 pub mod calendar;
 pub mod config;
+pub mod db;
+pub mod handlers;
+pub mod models;
 
 use auth::AuthService;
+use db::Database;
 
 #[derive(Clone)]
 pub struct AppState {
     pub auth_service: AuthService,
+    pub db: Database,
 }
 
 pub async fn run_server() -> Result<(), Box<dyn std::error::Error>> {
     // Initialize logging
     println!("🚀 Starting Calendar Backend Server");
+
+    // Initialize database
+    let database_url = std::env::var("DATABASE_URL")
+        .unwrap_or_else(|_| "sqlite:calendar.db".to_string());
     
+    let db = Database::new(&database_url).await?;
+    println!("✅ Database initialized");
+
     // Create auth service
     let jwt_secret = std::env::var("JWT_SECRET")
         .unwrap_or_else(|_| "your-super-secret-jwt-key-change-in-production".to_string());
-    
-    let auth_service = AuthService::new(jwt_secret);
-    
-    let app_state = AppState { auth_service };
+
+    let auth_service = AuthService::new(jwt_secret, db.clone());
+
+    let app_state = AppState { auth_service, db };
 
     // Build our application with routes
     let app = Router::new()
@@ -46,9 +56,22 @@ pub async fn run_server() -> Result<(), Box<dyn std::error::Error>> {
         .route("/api/calendar/events/delete", post(handlers::delete_event))
         .route("/api/calendar/events/:uid", get(handlers::refresh_event))
         // Event series-specific endpoints
-        .route("/api/calendar/events/series/create", post(handlers::create_event_series))
-        .route("/api/calendar/events/series/update", post(handlers::update_event_series))
-        .route("/api/calendar/events/series/delete", post(handlers::delete_event_series))
+        .route(
+            "/api/calendar/events/series/create",
+            post(handlers::create_event_series),
+        )
+        .route(
+            "/api/calendar/events/series/update",
+            post(handlers::update_event_series),
+        )
+        .route(
+            "/api/calendar/events/series/delete",
+            post(handlers::delete_event_series),
+        )
+        // User preferences endpoints
+        .route("/api/preferences", get(handlers::get_preferences))
+        .route("/api/preferences", post(handlers::update_preferences))
+        .route("/api/auth/logout", post(handlers::logout))
         .layer(
             CorsLayer::new()
                 .allow_origin(Any)
@@ -60,7 +83,7 @@ pub async fn run_server() -> Result<(), Box<dyn std::error::Error>> {
     // Start server
     let listener = tokio::net::TcpListener::bind("0.0.0.0:3000").await?;
     println!("📡 Server listening on http://0.0.0.0:3000");
-    
+
     axum::serve(listener, app).await?;
 
     Ok(())
@@ -76,4 +99,4 @@ async fn health_check() -> Json<serde_json::Value> {
         "service": "calendar-backend",
         "version": "0.1.0"
     }))
-}
+}

backend/src/main.rs

@@ -4,4 +4,4 @@ use calendar_backend::*;
 #[tokio::main]
 async fn main() -> Result<(), Box<dyn std::error::Error>> {
     run_server().await
-}
+}

backend/src/models.rs

@@ -16,8 +16,28 @@ pub struct CalDAVLoginRequest {
 #[derive(Debug, Serialize)]
 pub struct AuthResponse {
     pub token: String,
+    pub session_token: String,
     pub username: String,
     pub server_url: String,
+    pub preferences: UserPreferencesResponse,
+}
+
+#[derive(Debug, Serialize, Deserialize, Clone)]
+pub struct UserPreferencesResponse {
+    pub calendar_selected_date: Option<String>,
+    pub calendar_time_increment: Option<i32>,
+    pub calendar_view_mode: Option<String>,
+    pub calendar_theme: Option<String>,
+    pub calendar_colors: Option<String>,
+}
+
+#[derive(Debug, Deserialize)]
+pub struct UpdatePreferencesRequest {
+    pub calendar_selected_date: Option<String>,
+    pub calendar_time_increment: Option<i32>,
+    pub calendar_view_mode: Option<String>,
+    pub calendar_theme: Option<String>,
+    pub calendar_colors: Option<String>,
 }
 
 #[derive(Debug, Serialize)]
@@ -76,21 +96,21 @@ pub struct DeleteEventResponse {
 pub struct CreateEventRequest {
     pub title: String,
     pub description: String,
-    pub start_date: String,        // YYYY-MM-DD format
-    pub start_time: String,        // HH:MM format  
-    pub end_date: String,          // YYYY-MM-DD format
-    pub end_time: String,          // HH:MM format
+    pub start_date: String, // YYYY-MM-DD format
+    pub start_time: String, // HH:MM format
+    pub end_date: String,   // YYYY-MM-DD format
+    pub end_time: String,   // HH:MM format
     pub location: String,
     pub all_day: bool,
-    pub status: String,            // confirmed, tentative, cancelled
-    pub class: String,             // public, private, confidential
-    pub priority: Option<u8>,      // 0-9 priority level
-    pub organizer: String,         // organizer email
-    pub attendees: String,         // comma-separated attendee emails
-    pub categories: String,        // comma-separated categories
-    pub reminder: String,          // reminder type
-    pub recurrence: String,        // recurrence type
-    pub recurrence_days: Vec<bool>, // [Sun, Mon, Tue, Wed, Thu, Fri, Sat] for weekly recurrence
+    pub status: String,                // confirmed, tentative, cancelled
+    pub class: String,                 // public, private, confidential
+    pub priority: Option<u8>,          // 0-9 priority level
+    pub organizer: String,             // organizer email
+    pub attendees: String,             // comma-separated attendee emails
+    pub categories: String,            // comma-separated categories
+    pub reminder: String,              // reminder type
+    pub recurrence: String,            // recurrence type
+    pub recurrence_days: Vec<bool>,    // [Sun, Mon, Tue, Wed, Thu, Fri, Sat] for weekly recurrence
     pub calendar_path: Option<String>, // Optional - use first calendar if not specified
 }
 
@@ -103,24 +123,24 @@ pub struct CreateEventResponse {
 
 #[derive(Debug, Deserialize)]
 pub struct UpdateEventRequest {
-    pub uid: String,               // Event UID to identify which event to update
+    pub uid: String, // Event UID to identify which event to update
     pub title: String,
     pub description: String,
-    pub start_date: String,        // YYYY-MM-DD format
-    pub start_time: String,        // HH:MM format  
-    pub end_date: String,          // YYYY-MM-DD format
-    pub end_time: String,          // HH:MM format
+    pub start_date: String, // YYYY-MM-DD format
+    pub start_time: String, // HH:MM format
+    pub end_date: String,   // YYYY-MM-DD format
+    pub end_time: String,   // HH:MM format
     pub location: String,
     pub all_day: bool,
-    pub status: String,            // confirmed, tentative, cancelled
-    pub class: String,             // public, private, confidential
-    pub priority: Option<u8>,      // 0-9 priority level
-    pub organizer: String,         // organizer email
-    pub attendees: String,         // comma-separated attendee emails
-    pub categories: String,        // comma-separated categories
-    pub reminder: String,          // reminder type
-    pub recurrence: String,        // recurrence type
-    pub recurrence_days: Vec<bool>, // [Sun, Mon, Tue, Wed, Thu, Fri, Sat] for weekly recurrence
+    pub status: String,                // confirmed, tentative, cancelled
+    pub class: String,                 // public, private, confidential
+    pub priority: Option<u8>,          // 0-9 priority level
+    pub organizer: String,             // organizer email
+    pub attendees: String,             // comma-separated attendee emails
+    pub categories: String,            // comma-separated categories
+    pub reminder: String,              // reminder type
+    pub recurrence: String,            // recurrence type
+    pub recurrence_days: Vec<bool>,    // [Sun, Mon, Tue, Wed, Thu, Fri, Sat] for weekly recurrence
     pub calendar_path: Option<String>, // Optional - search all calendars if not specified
     pub update_action: Option<String>, // "update_series" for recurring events
     #[serde(skip_serializing_if = "Option::is_none")]
@@ -139,22 +159,22 @@ pub struct UpdateEventResponse {
 pub struct CreateEventSeriesRequest {
     pub title: String,
     pub description: String,
-    pub start_date: String,        // YYYY-MM-DD format
-    pub start_time: String,        // HH:MM format  
-    pub end_date: String,          // YYYY-MM-DD format
-    pub end_time: String,          // HH:MM format
+    pub start_date: String, // YYYY-MM-DD format
+    pub start_time: String, // HH:MM format
+    pub end_date: String,   // YYYY-MM-DD format
+    pub end_time: String,   // HH:MM format
     pub location: String,
     pub all_day: bool,
-    pub status: String,            // confirmed, tentative, cancelled
-    pub class: String,             // public, private, confidential
-    pub priority: Option<u8>,      // 0-9 priority level
-    pub organizer: String,         // organizer email
-    pub attendees: String,         // comma-separated attendee emails
-    pub categories: String,        // comma-separated categories
-    pub reminder: String,          // reminder type
-    
+    pub status: String,       // confirmed, tentative, cancelled
+    pub class: String,        // public, private, confidential
+    pub priority: Option<u8>, // 0-9 priority level
+    pub organizer: String,    // organizer email
+    pub attendees: String,    // comma-separated attendee emails
+    pub categories: String,   // comma-separated categories
+    pub reminder: String,     // reminder type
+
     // Series-specific fields
-    pub recurrence: String,        // recurrence type (daily, weekly, monthly, yearly)
+    pub recurrence: String, // recurrence type (daily, weekly, monthly, yearly)
     pub recurrence_days: Vec<bool>, // [Sun, Mon, Tue, Wed, Thu, Fri, Sat] for weekly recurrence
     pub recurrence_interval: Option<u32>, // Every N days/weeks/months/years
     pub recurrence_end_date: Option<String>, // When the series ends (YYYY-MM-DD)
@@ -173,34 +193,35 @@ pub struct CreateEventSeriesResponse {
 
 #[derive(Debug, Deserialize)]
 pub struct UpdateEventSeriesRequest {
-    pub series_uid: String,        // Series UID to identify which series to update
+    pub series_uid: String, // Series UID to identify which series to update
     pub title: String,
     pub description: String,
-    pub start_date: String,        // YYYY-MM-DD format
-    pub start_time: String,        // HH:MM format  
-    pub end_date: String,          // YYYY-MM-DD format
-    pub end_time: String,          // HH:MM format
+    pub start_date: String, // YYYY-MM-DD format
+    pub start_time: String, // HH:MM format
+    pub end_date: String,   // YYYY-MM-DD format
+    pub end_time: String,   // HH:MM format
     pub location: String,
     pub all_day: bool,
-    pub status: String,            // confirmed, tentative, cancelled
-    pub class: String,             // public, private, confidential
-    pub priority: Option<u8>,      // 0-9 priority level
-    pub organizer: String,         // organizer email
-    pub attendees: String,         // comma-separated attendee emails
-    pub categories: String,        // comma-separated categories
-    pub reminder: String,          // reminder type
-    
+    pub status: String,       // confirmed, tentative, cancelled
+    pub class: String,        // public, private, confidential
+    pub priority: Option<u8>, // 0-9 priority level
+    pub organizer: String,    // organizer email
+    pub attendees: String,    // comma-separated attendee emails
+    pub categories: String,   // comma-separated categories
+    pub reminder: String,     // reminder type
+
     // Series-specific fields
-    pub recurrence: String,        // recurrence type (daily, weekly, monthly, yearly)
+    pub recurrence: String, // recurrence type (daily, weekly, monthly, yearly)
     pub recurrence_days: Vec<bool>, // [Sun, Mon, Tue, Wed, Thu, Fri, Sat] for weekly recurrence
     pub recurrence_interval: Option<u32>, // Every N days/weeks/months/years
     pub recurrence_end_date: Option<String>, // When the series ends (YYYY-MM-DD)
     pub recurrence_count: Option<u32>, // Number of occurrences
     pub calendar_path: Option<String>, // Optional - search all calendars if not specified
-    
+
     // Update scope control
-    pub update_scope: String,      // "this_only", "this_and_future", "all_in_series"
+    pub update_scope: String, // "this_only", "this_and_future", "all_in_series"
     pub occurrence_date: Option<String>, // ISO date string for specific occurrence being updated
+    pub changed_fields: Option<Vec<String>>, // List of field names that were changed (for optimization)
 }
 
 #[derive(Debug, Serialize)]
@@ -213,12 +234,12 @@ pub struct UpdateEventSeriesResponse {
 
 #[derive(Debug, Deserialize)]
 pub struct DeleteEventSeriesRequest {
-    pub series_uid: String,        // Series UID to identify which series to delete
+    pub series_uid: String, // Series UID to identify which series to delete
     pub calendar_path: String,
     pub event_href: String,
-    
+
     // Delete scope control
-    pub delete_scope: String,      // "this_only", "this_and_future", "all_in_series"
+    pub delete_scope: String, // "this_only", "this_and_future", "all_in_series"
     pub occurrence_date: Option<String>, // ISO date string for specific occurrence being deleted
 }
 
@@ -273,4 +294,4 @@ impl std::fmt::Display for ApiError {
     }
 }
 
-impl std::error::Error for ApiError {}
+impl std::error::Error for ApiError {}

backend/tests/integration_tests.rs

@@ -1,26 +1,26 @@
-use calendar_backend::AppState;
-use calendar_backend::auth::AuthService;
-use reqwest::Client;
-use serde_json::json;
-use std::time::Duration;
-use tokio::time::sleep;
 use axum::{
     response::Json,
     routing::{get, post},
     Router,
 };
-use tower_http::cors::{CorsLayer, Any};
+use calendar_backend::auth::AuthService;
+use calendar_backend::AppState;
+use reqwest::Client;
+use serde_json::json;
 use std::sync::Arc;
+use std::time::Duration;
+use tokio::time::sleep;
+use tower_http::cors::{Any, CorsLayer};
 
 /// Test utilities for integration testing
 mod test_utils {
     use super::*;
-    
+
     pub struct TestServer {
         pub base_url: String,
         pub client: Client,
     }
-    
+
     impl TestServer {
         pub async fn start() -> Self {
             // Create auth service
@@ -33,19 +33,55 @@ mod test_utils {
                 .route("/", get(root))
                 .route("/api/health", get(health_check))
                 .route("/api/auth/login", post(calendar_backend::handlers::login))
-                .route("/api/auth/verify", get(calendar_backend::handlers::verify_token))
-                .route("/api/user/info", get(calendar_backend::handlers::get_user_info))
-                .route("/api/calendar/create", post(calendar_backend::handlers::create_calendar))
-                .route("/api/calendar/delete", post(calendar_backend::handlers::delete_calendar))
-                .route("/api/calendar/events", get(calendar_backend::handlers::get_calendar_events))
-                .route("/api/calendar/events/create", post(calendar_backend::handlers::create_event))
-                .route("/api/calendar/events/update", post(calendar_backend::handlers::update_event))
-                .route("/api/calendar/events/delete", post(calendar_backend::handlers::delete_event))
-                .route("/api/calendar/events/:uid", get(calendar_backend::handlers::refresh_event))
+                .route(
+                    "/api/auth/verify",
+                    get(calendar_backend::handlers::verify_token),
+                )
+                .route(
+                    "/api/user/info",
+                    get(calendar_backend::handlers::get_user_info),
+                )
+                .route(
+                    "/api/calendar/create",
+                    post(calendar_backend::handlers::create_calendar),
+                )
+                .route(
+                    "/api/calendar/delete",
+                    post(calendar_backend::handlers::delete_calendar),
+                )
+                .route(
+                    "/api/calendar/events",
+                    get(calendar_backend::handlers::get_calendar_events),
+                )
+                .route(
+                    "/api/calendar/events/create",
+                    post(calendar_backend::handlers::create_event),
+                )
+                .route(
+                    "/api/calendar/events/update",
+                    post(calendar_backend::handlers::update_event),
+                )
+                .route(
+                    "/api/calendar/events/delete",
+                    post(calendar_backend::handlers::delete_event),
+                )
+                .route(
+                    "/api/calendar/events/:uid",
+                    get(calendar_backend::handlers::refresh_event),
+                )
                 // Event series-specific endpoints
-                .route("/api/calendar/events/series/create", post(calendar_backend::handlers::create_event_series))
-                .route("/api/calendar/events/series/update", post(calendar_backend::handlers::update_event_series))
-                .route("/api/calendar/events/series/delete", post(calendar_backend::handlers::delete_event_series))
+                .route(
+                    "/api/calendar/events/series/create",
+                    post(calendar_backend::handlers::create_event_series),
+                )
+                .route(
+                    "/api/calendar/events/series/update",
+                    post(calendar_backend::handlers::update_event_series),
+                )
+                .route(
+                    "/api/calendar/events/series/delete",
+                    post(calendar_backend::handlers::delete_event_series),
+                )
                 .layer(
                     CorsLayer::new()
                         .allow_origin(Any)
@@ -58,39 +94,47 @@ mod test_utils {
             let listener = tokio::net::TcpListener::bind("127.0.0.1:0").await.unwrap();
             let addr = listener.local_addr().unwrap();
             let base_url = format!("http://127.0.0.1:{}", addr.port());
-            
+
             tokio::spawn(async move {
                 axum::serve(listener, app).await.unwrap();
             });
-            
+
             // Wait for server to start
             sleep(Duration::from_millis(100)).await;
-            
+
             let client = Client::new();
             TestServer { base_url, client }
         }
-        
+
         pub async fn login(&self) -> String {
             let login_payload = json!({
-                "username": std::env::var("CALDAV_USERNAME").unwrap_or("test".to_string()),
-                "password": std::env::var("CALDAV_PASSWORD").unwrap_or("test".to_string()),
-                "server_url": std::env::var("CALDAV_SERVER_URL").unwrap_or("https://example.com".to_string())
+                "username": "test".to_string(),
+                "password": "test".to_string(),
+                "server_url": "https://example.com".to_string()
             });
-            
-            let response = self.client
+
+            let response = self
+                .client
                 .post(&format!("{}/api/auth/login", self.base_url))
                 .json(&login_payload)
                 .send()
                 .await
                 .expect("Failed to send login request");
-                
-            assert!(response.status().is_success(), "Login failed with status: {}", response.status());
-            
+
+            assert!(
+                response.status().is_success(),
+                "Login failed with status: {}",
+                response.status()
+            );
+
             let login_response: serde_json::Value = response.json().await.unwrap();
-            login_response["token"].as_str().expect("Login response should contain token").to_string()
+            login_response["token"]
+                .as_str()
+                .expect("Login response should contain token")
+                .to_string()
         }
     }
-    
+
     async fn root() -> &'static str {
         "Calendar Backend API v0.1.0"
     }
@@ -106,26 +150,27 @@ mod test_utils {
 
 #[cfg(test)]
 mod tests {
-    use super::*;
     use super::test_utils::*;
+    use super::*;
 
     /// Test the health endpoint
     #[tokio::test]
     async fn test_health_endpoint() {
         let server = TestServer::start().await;
-        
-        let response = server.client
+
+        let response = server
+            .client
             .get(&format!("{}/api/health", server.base_url))
             .send()
             .await
             .unwrap();
-            
+
         assert_eq!(response.status(), 200);
-        
+
         let health_response: serde_json::Value = response.json().await.unwrap();
         assert_eq!(health_response["status"], "healthy");
         assert_eq!(health_response["service"], "calendar-backend");
-        
+
         println!("✓ Health endpoint test passed");
     }
 
@@ -133,33 +178,42 @@ mod tests {
     #[tokio::test]
     async fn test_auth_login() {
         let server = TestServer::start().await;
-        
-        // Load credentials from .env 
-        dotenvy::dotenv().ok();
-        let username = std::env::var("CALDAV_USERNAME").unwrap_or("test".to_string());
-        let password = std::env::var("CALDAV_PASSWORD").unwrap_or("test".to_string());
-        
-        let server_url = std::env::var("CALDAV_SERVER_URL").unwrap_or("https://example.com".to_string());
-        
+
+        // Use test credentials
+        let username = "test".to_string();
+        let password = "test".to_string();
+        let server_url = "https://example.com".to_string();
+
         let login_payload = json!({
             "username": username,
             "password": password,
             "server_url": server_url
         });
-        
-        let response = server.client
+
+        let response = server
+            .client
             .post(&format!("{}/api/auth/login", server.base_url))
             .json(&login_payload)
             .send()
             .await
             .unwrap();
-            
-        assert!(response.status().is_success(), "Login failed with status: {}", response.status());
-        
+
+        assert!(
+            response.status().is_success(),
+            "Login failed with status: {}",
+            response.status()
+        );
+
         let login_response: serde_json::Value = response.json().await.unwrap();
-        assert!(login_response["token"].is_string(), "Login response should contain a token");
-        assert!(login_response["username"].is_string(), "Login response should contain username");
-        
+        assert!(
+            login_response["token"].is_string(),
+            "Login response should contain a token"
+        );
+        assert!(
+            login_response["username"].is_string(),
+            "Login response should contain username"
+        );
+
         println!("✓ Authentication login test passed");
     }
 
@@ -167,52 +221,57 @@ mod tests {
     #[tokio::test]
     async fn test_auth_verify() {
         let server = TestServer::start().await;
-        
+
         // First login to get a token
         let token = server.login().await;
-        
-        let response = server.client
+
+        let response = server
+            .client
             .get(&format!("{}/api/auth/verify", server.base_url))
             .header("Authorization", format!("Bearer {}", token))
             .send()
             .await
             .unwrap();
-            
+
         assert_eq!(response.status(), 200);
-        
+
         let verify_response: serde_json::Value = response.json().await.unwrap();
         assert!(verify_response["valid"].as_bool().unwrap_or(false));
-        
+
         println!("✓ Authentication verify test passed");
     }
 
     /// Test user info endpoint
-    #[tokio::test] 
+    #[tokio::test]
     async fn test_user_info() {
         let server = TestServer::start().await;
-        
+
         // First login to get a token
         let token = server.login().await;
-        
+
         // Load password from env for CalDAV requests
         dotenvy::dotenv().ok();
-        let password = std::env::var("CALDAV_PASSWORD").unwrap_or("test".to_string());
-        
-        let response = server.client
+        let password = "test".to_string();
+
+        let response = server
+            .client
             .get(&format!("{}/api/user/info", server.base_url))
             .header("Authorization", format!("Bearer {}", token))
             .header("X-CalDAV-Password", password)
             .send()
             .await
             .unwrap();
-            
+
         // Note: This might fail if CalDAV server discovery fails, which can happen
         if response.status().is_success() {
             let user_info: serde_json::Value = response.json().await.unwrap();
             assert!(user_info["username"].is_string());
             println!("✓ User info test passed");
         } else {
-            println!("⚠ User info test skipped (CalDAV server issues): {}", response.status());
+            println!(
+                "⚠ User info test skipped (CalDAV server issues): {}",
+                response.status()
+            );
         }
     }
 
@@ -220,48 +279,59 @@ mod tests {
     #[tokio::test]
     async fn test_get_calendar_events() {
         let server = TestServer::start().await;
-        
+
         // First login to get a token
         let token = server.login().await;
-        
-        // Load password from env for CalDAV requests  
+
+        // Load password from env for CalDAV requests
         dotenvy::dotenv().ok();
-        let password = std::env::var("CALDAV_PASSWORD").unwrap_or("test".to_string());
-        
-        let response = server.client
-            .get(&format!("{}/api/calendar/events?year=2024&month=12", server.base_url))
+        let password = "test".to_string();
+
+        let response = server
+            .client
+            .get(&format!(
+                "{}/api/calendar/events?year=2024&month=12",
+                server.base_url
+            ))
             .header("Authorization", format!("Bearer {}", token))
             .header("X-CalDAV-Password", password)
             .send()
             .await
             .unwrap();
-            
-        assert!(response.status().is_success(), "Get events failed with status: {}", response.status());
-        
+
+        assert!(
+            response.status().is_success(),
+            "Get events failed with status: {}",
+            response.status()
+        );
+
         let events: serde_json::Value = response.json().await.unwrap();
         assert!(events.is_array());
-        
-        println!("✓ Get calendar events test passed (found {} events)", events.as_array().unwrap().len());
+
+        println!(
+            "✓ Get calendar events test passed (found {} events)",
+            events.as_array().unwrap().len()
+        );
     }
 
     /// Test event creation endpoint
     #[tokio::test]
     async fn test_create_event() {
         let server = TestServer::start().await;
-        
+
         // First login to get a token
         let token = server.login().await;
-        
+
         // Load password from env for CalDAV requests
-        dotenvy::dotenv().ok(); 
-        let password = std::env::var("CALDAV_PASSWORD").unwrap_or("test".to_string());
-        
+        dotenvy::dotenv().ok();
+        let password = "test".to_string();
+
         let create_payload = json!({
             "title": "Integration Test Event",
             "description": "Created by integration test",
             "start_date": "2024-12-25",
             "start_time": "10:00",
-            "end_date": "2024-12-25", 
+            "end_date": "2024-12-25",
             "end_time": "11:00",
             "location": "Test Location",
             "all_day": false,
@@ -275,8 +345,9 @@ mod tests {
             "recurrence": "none",
             "recurrence_days": [false, false, false, false, false, false, false]
         });
-        
-        let response = server.client
+
+        let response = server
+            .client
             .post(&format!("{}/api/calendar/events/create", server.base_url))
             .header("Authorization", format!("Bearer {}", token))
             .header("X-CalDAV-Password", password)
@@ -284,10 +355,10 @@ mod tests {
             .send()
             .await
             .unwrap();
-            
+
         let status = response.status();
         println!("Create event response status: {}", status);
-        
+
         // Note: This might fail if CalDAV server is not accessible, which is expected in CI
         if status.is_success() {
             let create_response: serde_json::Value = response.json().await.unwrap();
@@ -302,47 +373,58 @@ mod tests {
     #[tokio::test]
     async fn test_refresh_event() {
         let server = TestServer::start().await;
-        
+
         // First login to get a token
         let token = server.login().await;
-        
+
         // Load password from env for CalDAV requests
         dotenvy::dotenv().ok();
-        let password = std::env::var("CALDAV_PASSWORD").unwrap_or("test".to_string());
-        
+        let password = "test".to_string();
+
         // Use a dummy UID for testing - this will likely return 404 but we're testing the endpoint structure
         let test_uid = "test-event-uid";
-        
-        let response = server.client
-            .get(&format!("{}/api/calendar/events/{}", server.base_url, test_uid))
+
+        let response = server
+            .client
+            .get(&format!(
+                "{}/api/calendar/events/{}",
+                server.base_url, test_uid
+            ))
             .header("Authorization", format!("Bearer {}", token))
             .header("X-CalDAV-Password", password)
             .send()
             .await
             .unwrap();
-            
+
         // We expect either 200 (if event exists) or 404 (if not found) - both are valid responses
-        assert!(response.status() == 200 || response.status() == 404, 
-               "Refresh event failed with unexpected status: {}", response.status());
-               
+        assert!(
+            response.status() == 200 || response.status() == 404,
+            "Refresh event failed with unexpected status: {}",
+            response.status()
+        );
+
         println!("✓ Refresh event endpoint test passed");
     }
-    
+
     /// Test invalid authentication
     #[tokio::test]
     async fn test_invalid_auth() {
         let server = TestServer::start().await;
-        
-        let response = server.client
+
+        let response = server
+            .client
             .get(&format!("{}/api/user/info", server.base_url))
             .header("Authorization", "Bearer invalid-token")
             .send()
             .await
             .unwrap();
-            
+
         // Accept both 400 and 401 as valid responses for invalid tokens
-        assert!(response.status() == 401 || response.status() == 400, 
-               "Expected 401 or 400 for invalid token, got {}", response.status());
+        assert!(
+            response.status() == 401 || response.status() == 400,
+            "Expected 401 or 400 for invalid token, got {}",
+            response.status()
+        );
         println!("✓ Invalid authentication test passed");
     }
 
@@ -350,13 +432,14 @@ mod tests {
     #[tokio::test]
     async fn test_missing_auth() {
         let server = TestServer::start().await;
-        
-        let response = server.client
+
+        let response = server
+            .client
             .get(&format!("{}/api/user/info", server.base_url))
             .send()
             .await
             .unwrap();
-            
+
         assert_eq!(response.status(), 401);
         println!("✓ Missing authentication test passed");
     }
@@ -367,20 +450,20 @@ mod tests {
     #[tokio::test]
     async fn test_create_event_series() {
         let server = TestServer::start().await;
-        
+
         // First login to get a token
         let token = server.login().await;
-        
+
         // Load password from env for CalDAV requests
         dotenvy::dotenv().ok();
-        let password = std::env::var("CALDAV_PASSWORD").unwrap_or("test".to_string());
-        
+        let password = "test".to_string();
+
         let create_payload = json!({
             "title": "Integration Test Series",
             "description": "Created by integration test for series",
             "start_date": "2024-12-25",
             "start_time": "10:00",
-            "end_date": "2024-12-25", 
+            "end_date": "2024-12-25",
             "end_time": "11:00",
             "location": "Test Series Location",
             "all_day": false,
@@ -397,19 +480,23 @@ mod tests {
             "recurrence_count": 4,
             "calendar_path": "/calendars/test/default/" // Provide explicit path to bypass discovery
         });
-        
-        let response = server.client
-            .post(&format!("{}/api/calendar/events/series/create", server.base_url))
+
+        let response = server
+            .client
+            .post(&format!(
+                "{}/api/calendar/events/series/create",
+                server.base_url
+            ))
             .header("Authorization", format!("Bearer {}", token))
             .header("X-CalDAV-Password", password)
             .json(&create_payload)
             .send()
             .await
             .unwrap();
-            
+
         let status = response.status();
         println!("Create series response status: {}", status);
-        
+
         // Note: This might fail if CalDAV server is not accessible, which is expected in CI
         if status.is_success() {
             let create_response: serde_json::Value = response.json().await.unwrap();
@@ -422,24 +509,24 @@ mod tests {
     }
 
     /// Test event series update endpoint
-    #[tokio::test] 
+    #[tokio::test]
     async fn test_update_event_series() {
         let server = TestServer::start().await;
-        
+
         // First login to get a token
         let token = server.login().await;
-        
+
         // Load password from env for CalDAV requests
         dotenvy::dotenv().ok();
-        let password = std::env::var("CALDAV_PASSWORD").unwrap_or("test".to_string());
-        
+        let password = "test".to_string();
+
         let update_payload = json!({
             "series_uid": "test-series-uid",
             "title": "Updated Series Title",
             "description": "Updated by integration test",
             "start_date": "2024-12-26",
             "start_time": "14:00",
-            "end_date": "2024-12-26", 
+            "end_date": "2024-12-26",
             "end_time": "15:00",
             "location": "Updated Location",
             "all_day": false,
@@ -457,27 +544,36 @@ mod tests {
             "update_scope": "all_in_series",
             "calendar_path": "/calendars/test/default/" // Provide explicit path to bypass discovery
         });
-        
-        let response = server.client
-            .post(&format!("{}/api/calendar/events/series/update", server.base_url))
+
+        let response = server
+            .client
+            .post(&format!(
+                "{}/api/calendar/events/series/update",
+                server.base_url
+            ))
             .header("Authorization", format!("Bearer {}", token))
             .header("X-CalDAV-Password", password)
             .json(&update_payload)
             .send()
             .await
             .unwrap();
-            
+
         let status = response.status();
         println!("Update series response status: {}", status);
-        
+
         // Note: This might fail if CalDAV server is not accessible or event doesn't exist, which is expected in CI
         if status.is_success() {
             let update_response: serde_json::Value = response.json().await.unwrap();
             assert!(update_response["success"].as_bool().unwrap_or(false));
-            assert_eq!(update_response["series_uid"].as_str().unwrap(), "test-series-uid");
+            assert_eq!(
+                update_response["series_uid"].as_str().unwrap(),
+                "test-series-uid"
+            );
             println!("✓ Update event series test passed");
         } else if status == 404 {
-            println!("⚠ Update event series test skipped (event not found - expected for test data)");
+            println!(
+                "⚠ Update event series test skipped (event not found - expected for test data)"
+            );
         } else {
             println!("⚠ Update event series test skipped (CalDAV server not accessible)");
         }
@@ -487,40 +583,46 @@ mod tests {
     #[tokio::test]
     async fn test_delete_event_series() {
         let server = TestServer::start().await;
-        
-        // First login to get a token  
+
+        // First login to get a token
         let token = server.login().await;
-        
+
         // Load password from env for CalDAV requests
         dotenvy::dotenv().ok();
-        let password = std::env::var("CALDAV_PASSWORD").unwrap_or("test".to_string());
-        
+        let password = "test".to_string();
+
         let delete_payload = json!({
             "series_uid": "test-series-to-delete",
             "calendar_path": "/calendars/test/default/",
             "event_href": "test-series.ics",
             "delete_scope": "all_in_series"
         });
-        
-        let response = server.client
-            .post(&format!("{}/api/calendar/events/series/delete", server.base_url))
+
+        let response = server
+            .client
+            .post(&format!(
+                "{}/api/calendar/events/series/delete",
+                server.base_url
+            ))
             .header("Authorization", format!("Bearer {}", token))
             .header("X-CalDAV-Password", password)
             .json(&delete_payload)
             .send()
             .await
             .unwrap();
-            
+
         let status = response.status();
         println!("Delete series response status: {}", status);
-        
+
         // Note: This might fail if CalDAV server is not accessible or event doesn't exist, which is expected in CI
         if status.is_success() {
             let delete_response: serde_json::Value = response.json().await.unwrap();
             assert!(delete_response["success"].as_bool().unwrap_or(false));
             println!("✓ Delete event series test passed");
         } else if status == 404 {
-            println!("⚠ Delete event series test skipped (event not found - expected for test data)");
+            println!(
+                "⚠ Delete event series test skipped (event not found - expected for test data)"
+            );
         } else {
             println!("⚠ Delete event series test skipped (CalDAV server not accessible)");
         }
@@ -530,17 +632,17 @@ mod tests {
     #[tokio::test]
     async fn test_invalid_update_scope() {
         let server = TestServer::start().await;
-        
+
         // First login to get a token
         let token = server.login().await;
-        
+
         let invalid_payload = json!({
             "series_uid": "test-series-uid",
             "title": "Test Title",
             "description": "Test",
             "start_date": "2024-12-25",
             "start_time": "10:00",
-            "end_date": "2024-12-25", 
+            "end_date": "2024-12-25",
             "end_time": "11:00",
             "location": "Test",
             "all_day": false,
@@ -554,16 +656,24 @@ mod tests {
             "recurrence_days": [false, false, false, false, false, false, false],
             "update_scope": "invalid_scope" // This should cause a 400 error
         });
-        
-        let response = server.client
-            .post(&format!("{}/api/calendar/events/series/update", server.base_url))
+
+        let response = server
+            .client
+            .post(&format!(
+                "{}/api/calendar/events/series/update",
+                server.base_url
+            ))
             .header("Authorization", format!("Bearer {}", token))
             .json(&invalid_payload)
             .send()
             .await
             .unwrap();
-            
-        assert_eq!(response.status(), 400, "Expected 400 for invalid update scope");
+
+        assert_eq!(
+            response.status(),
+            400,
+            "Expected 400 for invalid update scope"
+        );
         println!("✓ Invalid update scope test passed");
     }
 
@@ -571,16 +681,16 @@ mod tests {
     #[tokio::test]
     async fn test_non_recurring_series_rejection() {
         let server = TestServer::start().await;
-        
+
         // First login to get a token
         let token = server.login().await;
-        
+
         let non_recurring_payload = json!({
             "title": "Non-recurring Event",
             "description": "This should be rejected",
             "start_date": "2024-12-25",
             "start_time": "10:00",
-            "end_date": "2024-12-25", 
+            "end_date": "2024-12-25",
             "end_time": "11:00",
             "location": "Test",
             "all_day": false,
@@ -593,16 +703,24 @@ mod tests {
             "recurrence": "none", // This should cause rejection
             "recurrence_days": [false, false, false, false, false, false, false]
         });
-        
-        let response = server.client
-            .post(&format!("{}/api/calendar/events/series/create", server.base_url))
+
+        let response = server
+            .client
+            .post(&format!(
+                "{}/api/calendar/events/series/create",
+                server.base_url
+            ))
             .header("Authorization", format!("Bearer {}", token))
             .json(&non_recurring_payload)
             .send()
             .await
             .unwrap();
-            
-        assert_eq!(response.status(), 400, "Expected 400 for non-recurring event in series endpoint");
+
+        assert_eq!(
+            response.status(),
+            400,
+            "Expected 400 for non-recurring event in series endpoint"
+        );
         println!("✓ Non-recurring series rejection test passed");
     }
-}
+}

calendar-models/src/common.rs

@@ -1,6 +1,6 @@
 //! Common types and enums used across calendar components
 
-use chrono::{DateTime, Utc, Duration};
+use chrono::{DateTime, Duration, Utc};
 use serde::{Deserialize, Serialize};
 
 // ==================== ENUMS AND COMMON TYPES ====================
@@ -22,7 +22,7 @@ pub enum EventClass {
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
 pub enum TimeTransparency {
     Opaque,      // OPAQUE - time is not available
-    Transparent, // TRANSPARENT - time is available  
+    Transparent, // TRANSPARENT - time is available
 }
 
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
@@ -64,11 +64,11 @@ pub enum AlarmAction {
 
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
 pub struct CalendarUser {
-    pub cal_address: String,                    // Calendar user address (usually email)
-    pub common_name: Option<String>,            // CN parameter - display name
-    pub dir_entry_ref: Option<String>,          // DIR parameter - directory entry
-    pub sent_by: Option<String>,                // SENT-BY parameter
-    pub language: Option<String>,               // LANGUAGE parameter
+    pub cal_address: String,           // Calendar user address (usually email)
+    pub common_name: Option<String>,   // CN parameter - display name
+    pub dir_entry_ref: Option<String>, // DIR parameter - directory entry
+    pub sent_by: Option<String>,       // SENT-BY parameter
+    pub language: Option<String>,      // LANGUAGE parameter
 }
 
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
@@ -78,130 +78,130 @@ pub struct Attendee {
     pub role: Option<AttendeeRole>,             // ROLE parameter
     pub part_stat: Option<ParticipationStatus>, // PARTSTAT parameter
     pub rsvp: Option<bool>,                     // RSVP parameter
-    pub cu_type: Option<String>,                // CUTYPE parameter (INDIVIDUAL, GROUP, RESOURCE, ROOM, UNKNOWN)
-    pub member: Vec<String>,                    // MEMBER parameter
-    pub delegated_to: Vec<String>,              // DELEGATED-TO parameter  
-    pub delegated_from: Vec<String>,            // DELEGATED-FROM parameter
-    pub sent_by: Option<String>,                // SENT-BY parameter
-    pub dir_entry_ref: Option<String>,          // DIR parameter
-    pub language: Option<String>,               // LANGUAGE parameter
+    pub cu_type: Option<String>, // CUTYPE parameter (INDIVIDUAL, GROUP, RESOURCE, ROOM, UNKNOWN)
+    pub member: Vec<String>,     // MEMBER parameter
+    pub delegated_to: Vec<String>, // DELEGATED-TO parameter
+    pub delegated_from: Vec<String>, // DELEGATED-FROM parameter
+    pub sent_by: Option<String>, // SENT-BY parameter
+    pub dir_entry_ref: Option<String>, // DIR parameter
+    pub language: Option<String>, // LANGUAGE parameter
 }
 
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
 pub struct VAlarm {
-    pub action: AlarmAction,                    // Action (ACTION) - REQUIRED
-    pub trigger: AlarmTrigger,                  // Trigger (TRIGGER) - REQUIRED
-    pub duration: Option<Duration>,             // Duration (DURATION)
-    pub repeat: Option<u32>,                    // Repeat count (REPEAT)
-    pub description: Option<String>,            // Description for DISPLAY/EMAIL
-    pub summary: Option<String>,                // Summary for EMAIL
-    pub attendees: Vec<Attendee>,               // Attendees for EMAIL
-    pub attach: Vec<Attachment>,                // Attachments for AUDIO/EMAIL
+    pub action: AlarmAction,         // Action (ACTION) - REQUIRED
+    pub trigger: AlarmTrigger,       // Trigger (TRIGGER) - REQUIRED
+    pub duration: Option<Duration>,  // Duration (DURATION)
+    pub repeat: Option<u32>,         // Repeat count (REPEAT)
+    pub description: Option<String>, // Description for DISPLAY/EMAIL
+    pub summary: Option<String>,     // Summary for EMAIL
+    pub attendees: Vec<Attendee>,    // Attendees for EMAIL
+    pub attach: Vec<Attachment>,     // Attachments for AUDIO/EMAIL
 }
 
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
 pub enum AlarmTrigger {
-    DateTime(DateTime<Utc>),                    // Absolute trigger time
-    Duration(Duration),                         // Duration relative to start/end
+    DateTime(DateTime<Utc>), // Absolute trigger time
+    Duration(Duration),      // Duration relative to start/end
 }
 
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
 pub struct Attachment {
-    pub format_type: Option<String>,            // FMTTYPE parameter (MIME type)
-    pub encoding: Option<String>,               // ENCODING parameter
-    pub value: Option<String>,                  // VALUE parameter (BINARY or URI)
-    pub uri: Option<String>,                    // URI reference
-    pub binary_data: Option<Vec<u8>>,           // Binary data (when ENCODING=BASE64)
+    pub format_type: Option<String>,  // FMTTYPE parameter (MIME type)
+    pub encoding: Option<String>,     // ENCODING parameter
+    pub value: Option<String>,        // VALUE parameter (BINARY or URI)
+    pub uri: Option<String>,          // URI reference
+    pub binary_data: Option<Vec<u8>>, // Binary data (when ENCODING=BASE64)
 }
 
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
 pub struct GeographicPosition {
-    pub latitude: f64,                          // Latitude in decimal degrees
-    pub longitude: f64,                         // Longitude in decimal degrees
+    pub latitude: f64,  // Latitude in decimal degrees
+    pub longitude: f64, // Longitude in decimal degrees
 }
 
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
 pub struct VTimeZone {
-    pub tzid: String,                           // Time zone ID (TZID) - REQUIRED
-    pub last_modified: Option<DateTime<Utc>>,   // Last modified (LAST-MODIFIED)
-    pub tzurl: Option<String>,                  // Time zone URL (TZURL)
+    pub tzid: String,                                // Time zone ID (TZID) - REQUIRED
+    pub last_modified: Option<DateTime<Utc>>,        // Last modified (LAST-MODIFIED)
+    pub tzurl: Option<String>,                       // Time zone URL (TZURL)
     pub standard_components: Vec<TimeZoneComponent>, // STANDARD components
     pub daylight_components: Vec<TimeZoneComponent>, // DAYLIGHT components
 }
 
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
 pub struct TimeZoneComponent {
-    pub dtstart: DateTime<Utc>,                 // Start of this time zone definition
-    pub tzoffset_to: String,                    // UTC offset for this component
-    pub tzoffset_from: String,                  // UTC offset before this component  
-    pub rrule: Option<String>,                  // Recurrence rule
-    pub rdate: Vec<DateTime<Utc>>,              // Recurrence dates
-    pub tzname: Vec<String>,                    // Time zone names
-    pub comment: Vec<String>,                   // Comments
+    pub dtstart: DateTime<Utc>,    // Start of this time zone definition
+    pub tzoffset_to: String,       // UTC offset for this component
+    pub tzoffset_from: String,     // UTC offset before this component
+    pub rrule: Option<String>,     // Recurrence rule
+    pub rdate: Vec<DateTime<Utc>>, // Recurrence dates
+    pub tzname: Vec<String>,       // Time zone names
+    pub comment: Vec<String>,      // Comments
 }
 
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
 pub struct VJournal {
     // Required properties
-    pub dtstamp: DateTime<Utc>,                 // Date-time stamp (DTSTAMP) - REQUIRED
-    pub uid: String,                            // Unique identifier (UID) - REQUIRED
-    
+    pub dtstamp: DateTime<Utc>, // Date-time stamp (DTSTAMP) - REQUIRED
+    pub uid: String,            // Unique identifier (UID) - REQUIRED
+
     // Optional properties
-    pub dtstart: Option<DateTime<Utc>>,         // Start date-time (DTSTART)
-    pub summary: Option<String>,                // Summary/title (SUMMARY) 
-    pub description: Option<String>,            // Description (DESCRIPTION)
-    
+    pub dtstart: Option<DateTime<Utc>>, // Start date-time (DTSTART)
+    pub summary: Option<String>,        // Summary/title (SUMMARY)
+    pub description: Option<String>,    // Description (DESCRIPTION)
+
     // Classification and status
-    pub class: Option<EventClass>,              // Classification (CLASS)
-    pub status: Option<String>,                 // Status (STATUS)
-    
+    pub class: Option<EventClass>, // Classification (CLASS)
+    pub status: Option<String>,    // Status (STATUS)
+
     // People and organization
-    pub organizer: Option<CalendarUser>,        // Organizer (ORGANIZER)
-    pub attendees: Vec<Attendee>,               // Attendees (ATTENDEE)
-    
+    pub organizer: Option<CalendarUser>, // Organizer (ORGANIZER)
+    pub attendees: Vec<Attendee>,        // Attendees (ATTENDEE)
+
     // Categorization
-    pub categories: Vec<String>,                // Categories (CATEGORIES)
-    
+    pub categories: Vec<String>, // Categories (CATEGORIES)
+
     // Versioning and modification
-    pub sequence: Option<u32>,                  // Sequence number (SEQUENCE)
-    pub created: Option<DateTime<Utc>>,         // Creation time (CREATED)
-    pub last_modified: Option<DateTime<Utc>>,   // Last modified (LAST-MODIFIED)
-    
+    pub sequence: Option<u32>,                // Sequence number (SEQUENCE)
+    pub created: Option<DateTime<Utc>>,       // Creation time (CREATED)
+    pub last_modified: Option<DateTime<Utc>>, // Last modified (LAST-MODIFIED)
+
     // Recurrence
-    pub rrule: Option<String>,                  // Recurrence rule (RRULE)
-    pub rdate: Vec<DateTime<Utc>>,              // Recurrence dates (RDATE)
-    pub exdate: Vec<DateTime<Utc>>,             // Exception dates (EXDATE)
-    pub recurrence_id: Option<DateTime<Utc>>,   // Recurrence ID (RECURRENCE-ID)
-    
+    pub rrule: Option<String>,                // Recurrence rule (RRULE)
+    pub rdate: Vec<DateTime<Utc>>,            // Recurrence dates (RDATE)
+    pub exdate: Vec<DateTime<Utc>>,           // Exception dates (EXDATE)
+    pub recurrence_id: Option<DateTime<Utc>>, // Recurrence ID (RECURRENCE-ID)
+
     // Attachments
-    pub attachments: Vec<Attachment>,           // Attachments (ATTACH)
+    pub attachments: Vec<Attachment>, // Attachments (ATTACH)
 }
 
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
 pub struct VFreeBusy {
     // Required properties
-    pub dtstamp: DateTime<Utc>,                 // Date-time stamp (DTSTAMP) - REQUIRED
-    pub uid: String,                            // Unique identifier (UID) - REQUIRED
-    
+    pub dtstamp: DateTime<Utc>, // Date-time stamp (DTSTAMP) - REQUIRED
+    pub uid: String,            // Unique identifier (UID) - REQUIRED
+
     // Optional date-time properties
-    pub dtstart: Option<DateTime<Utc>>,         // Start date-time (DTSTART)
-    pub dtend: Option<DateTime<Utc>>,           // End date-time (DTEND)
-    
+    pub dtstart: Option<DateTime<Utc>>, // Start date-time (DTSTART)
+    pub dtend: Option<DateTime<Utc>>,   // End date-time (DTEND)
+
     // People
-    pub organizer: Option<CalendarUser>,        // Organizer (ORGANIZER)
-    pub attendees: Vec<Attendee>,               // Attendees (ATTENDEE)
-    
+    pub organizer: Option<CalendarUser>, // Organizer (ORGANIZER)
+    pub attendees: Vec<Attendee>,        // Attendees (ATTENDEE)
+
     // Free/busy time
-    pub freebusy: Vec<FreeBusyTime>,            // Free/busy time periods
-    pub url: Option<String>,                    // URL (URL)
-    pub comment: Vec<String>,                   // Comments (COMMENT)
-    pub contact: Option<String>,                // Contact information (CONTACT)
+    pub freebusy: Vec<FreeBusyTime>, // Free/busy time periods
+    pub url: Option<String>,         // URL (URL)
+    pub comment: Vec<String>,        // Comments (COMMENT)
+    pub contact: Option<String>,     // Contact information (CONTACT)
 }
 
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
 pub struct FreeBusyTime {
-    pub fb_type: FreeBusyType,                  // Free/busy type
-    pub periods: Vec<Period>,                   // Time periods
+    pub fb_type: FreeBusyType, // Free/busy type
+    pub periods: Vec<Period>,  // Time periods
 }
 
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
@@ -214,7 +214,7 @@ pub enum FreeBusyType {
 
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
 pub struct Period {
-    pub start: DateTime<Utc>,                   // Period start
-    pub end: Option<DateTime<Utc>>,             // Period end
-    pub duration: Option<Duration>,             // Period duration (alternative to end)
-}
+    pub start: DateTime<Utc>,       // Period start
+    pub end: Option<DateTime<Utc>>, // Period end
+    pub duration: Option<Duration>, // Period duration (alternative to end)
+}

calendar-models/src/lib.rs

@@ -1,10 +1,10 @@
 //! RFC 5545 Compliant Calendar Models
-//! 
+//!
 //! This crate provides shared data structures for calendar applications
 //! that comply with RFC 5545 (iCalendar) specification.
 
-pub mod vevent;
 pub mod common;
+pub mod vevent;
 
+pub use common::*;
 pub use vevent::*;
-pub use common::*;

calendar-models/src/vevent.rs

@@ -1,66 +1,66 @@
 //! VEvent - RFC 5545 compliant calendar event structure
 
-use chrono::{DateTime, Utc, Duration};
-use serde::{Deserialize, Serialize};
 use crate::common::*;
+use chrono::{DateTime, Duration, Utc};
+use serde::{Deserialize, Serialize};
 
 // ==================== VEVENT COMPONENT ====================
 
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq)]
 pub struct VEvent {
     // Required properties
-    pub dtstamp: DateTime<Utc>,                 // Date-time stamp (DTSTAMP) - REQUIRED
-    pub uid: String,                            // Unique identifier (UID) - REQUIRED
-    pub dtstart: DateTime<Utc>,                 // Start date-time (DTSTART) - REQUIRED
-    
+    pub dtstamp: DateTime<Utc>, // Date-time stamp (DTSTAMP) - REQUIRED
+    pub uid: String,            // Unique identifier (UID) - REQUIRED
+    pub dtstart: DateTime<Utc>, // Start date-time (DTSTART) - REQUIRED
+
     // Optional properties (commonly used)
-    pub dtend: Option<DateTime<Utc>>,           // End date-time (DTEND)
-    pub duration: Option<Duration>,             // Duration (DURATION) - alternative to DTEND
-    pub summary: Option<String>,                // Summary/title (SUMMARY)
-    pub description: Option<String>,            // Description (DESCRIPTION)
-    pub location: Option<String>,               // Location (LOCATION)
-    
+    pub dtend: Option<DateTime<Utc>>, // End date-time (DTEND)
+    pub duration: Option<Duration>,   // Duration (DURATION) - alternative to DTEND
+    pub summary: Option<String>,      // Summary/title (SUMMARY)
+    pub description: Option<String>,  // Description (DESCRIPTION)
+    pub location: Option<String>,     // Location (LOCATION)
+
     // Classification and status
-    pub class: Option<EventClass>,              // Classification (CLASS)
-    pub status: Option<EventStatus>,            // Status (STATUS)
-    pub transp: Option<TimeTransparency>,       // Time transparency (TRANSP)
-    pub priority: Option<u8>,                   // Priority 0-9 (PRIORITY)
-    
+    pub class: Option<EventClass>,        // Classification (CLASS)
+    pub status: Option<EventStatus>,      // Status (STATUS)
+    pub transp: Option<TimeTransparency>, // Time transparency (TRANSP)
+    pub priority: Option<u8>,             // Priority 0-9 (PRIORITY)
+
     // People and organization
-    pub organizer: Option<CalendarUser>,        // Organizer (ORGANIZER)
-    pub attendees: Vec<Attendee>,               // Attendees (ATTENDEE)
-    pub contact: Option<String>,                // Contact information (CONTACT)
-    
+    pub organizer: Option<CalendarUser>, // Organizer (ORGANIZER)
+    pub attendees: Vec<Attendee>,        // Attendees (ATTENDEE)
+    pub contact: Option<String>,         // Contact information (CONTACT)
+
     // Categorization and relationships
-    pub categories: Vec<String>,                // Categories (CATEGORIES)
-    pub comment: Option<String>,                // Comment (COMMENT)
-    pub resources: Vec<String>,                 // Resources (RESOURCES)
-    pub related_to: Option<String>,             // Related component (RELATED-TO)
-    pub url: Option<String>,                    // URL (URL)
-    
+    pub categories: Vec<String>,    // Categories (CATEGORIES)
+    pub comment: Option<String>,    // Comment (COMMENT)
+    pub resources: Vec<String>,     // Resources (RESOURCES)
+    pub related_to: Option<String>, // Related component (RELATED-TO)
+    pub url: Option<String>,        // URL (URL)
+
     // Geographical
-    pub geo: Option<GeographicPosition>,        // Geographic position (GEO)
-    
+    pub geo: Option<GeographicPosition>, // Geographic position (GEO)
+
     // Versioning and modification
-    pub sequence: Option<u32>,                  // Sequence number (SEQUENCE)
-    pub created: Option<DateTime<Utc>>,         // Creation time (CREATED)
-    pub last_modified: Option<DateTime<Utc>>,   // Last modified (LAST-MODIFIED)
-    
+    pub sequence: Option<u32>,                // Sequence number (SEQUENCE)
+    pub created: Option<DateTime<Utc>>,       // Creation time (CREATED)
+    pub last_modified: Option<DateTime<Utc>>, // Last modified (LAST-MODIFIED)
+
     // Recurrence
-    pub rrule: Option<String>,                  // Recurrence rule (RRULE)
-    pub rdate: Vec<DateTime<Utc>>,              // Recurrence dates (RDATE)
-    pub exdate: Vec<DateTime<Utc>>,             // Exception dates (EXDATE)
-    pub recurrence_id: Option<DateTime<Utc>>,   // Recurrence ID (RECURRENCE-ID)
-    
+    pub rrule: Option<String>,                // Recurrence rule (RRULE)
+    pub rdate: Vec<DateTime<Utc>>,            // Recurrence dates (RDATE)
+    pub exdate: Vec<DateTime<Utc>>,           // Exception dates (EXDATE)
+    pub recurrence_id: Option<DateTime<Utc>>, // Recurrence ID (RECURRENCE-ID)
+
     // Alarms and attachments
-    pub alarms: Vec<VAlarm>,                    // VALARM components
-    pub attachments: Vec<Attachment>,           // Attachments (ATTACH)
-    
+    pub alarms: Vec<VAlarm>,          // VALARM components
+    pub attachments: Vec<Attachment>, // Attachments (ATTACH)
+
     // CalDAV specific (for implementation)
-    pub etag: Option<String>,                   // ETag for CalDAV
-    pub href: Option<String>,                   // Href for CalDAV
-    pub calendar_path: Option<String>,          // Calendar path
-    pub all_day: bool,                          // All-day event flag
+    pub etag: Option<String>,          // ETag for CalDAV
+    pub href: Option<String>,          // Href for CalDAV
+    pub calendar_path: Option<String>, // Calendar path
+    pub all_day: bool,                 // All-day event flag
 }
 
 impl VEvent {
@@ -129,7 +129,9 @@ impl VEvent {
 
     /// Helper method to get display title (summary or "Untitled Event")
     pub fn get_title(&self) -> String {
-        self.summary.clone().unwrap_or_else(|| "Untitled Event".to_string())
+        self.summary
+            .clone()
+            .unwrap_or_else(|| "Untitled Event".to_string())
     }
 
     /// Helper method to get start date for UI compatibility
@@ -151,7 +153,7 @@ impl VEvent {
     pub fn get_status_display(&self) -> &'static str {
         match &self.status {
             Some(EventStatus::Tentative) => "Tentative",
-            Some(EventStatus::Confirmed) => "Confirmed", 
+            Some(EventStatus::Confirmed) => "Confirmed",
             Some(EventStatus::Cancelled) => "Cancelled",
             None => "Confirmed", // Default
         }
@@ -180,4 +182,4 @@ impl VEvent {
             Some(p) => format!("Priority {}", p),
         }
     }
-}
+}

compose.yml

@@ -0,0 +1,22 @@
+services:
+  calendar-backend:
+    build: .
+    env_file:
+      - .env
+    ports:
+      - "3000:3000"
+    volumes:
+      - ./data/site_dist:/srv/www
+
+  calendar-frontend:
+    image: caddy
+    env_file:
+      - .env
+    ports:
+      - "80:80"
+      - "443:443"
+    volumes:
+      - ./data/site_dist:/srv/www:ro
+      - ./Caddyfile:/etc/caddy/Caddyfile:ro
+      - ./data/caddy/data:/data
+      - ./data/caddy/config:/config

frontend/index.html

@@ -4,7 +4,15 @@
     <meta charset="utf-8" />
     <title>Calendar App</title>
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <base data-trunk-public-url />
     <link data-trunk rel="css" href="styles.css">
 </head>
-<body></body>
+<body>
+    <script>
+        console.log("HTML loaded, waiting for WASM...");
+        window.addEventListener('TrunkApplicationStarted', () => {
+            console.log("Trunk application started successfully!");
+        });
+    </script>
+</body>
 </html>

frontend/src/auth.rs

@@ -11,11 +11,22 @@ pub struct CalDAVLoginRequest {
     pub password: String,
 }
 
+#[derive(Debug, Serialize, Deserialize, Clone)]
+pub struct UserPreferencesResponse {
+    pub calendar_selected_date: Option<String>,
+    pub calendar_time_increment: Option<i32>,
+    pub calendar_view_mode: Option<String>,
+    pub calendar_theme: Option<String>,
+    pub calendar_colors: Option<String>,
+}
+
 #[derive(Debug, Serialize, Deserialize)]
 pub struct AuthResponse {
     pub token: String,
+    pub session_token: String,
     pub username: String,
     pub server_url: String,
+    pub preferences: UserPreferencesResponse,
 }
 
 #[derive(Debug, Deserialize)]
@@ -34,14 +45,14 @@ impl AuthService {
         let base_url = option_env!("BACKEND_API_URL")
             .unwrap_or("http://localhost:3000/api")
             .to_string();
-        
+
         Self { base_url }
     }
 
     pub async fn login(&self, request: CalDAVLoginRequest) -> Result<AuthResponse, String> {
         self.post_json("/auth/login", &request).await
     }
-    
+
     // Helper method for POST requests with JSON body
     async fn post_json<T: Serialize, R: for<'de> Deserialize<'de>>(
         &self,
@@ -49,9 +60,9 @@ impl AuthService {
         body: &T,
     ) -> Result<R, String> {
         let window = web_sys::window().ok_or("No global window exists")?;
-        
-        let json_body = serde_json::to_string(body)
-            .map_err(|e| format!("JSON serialization failed: {}", e))?;
+
+        let json_body =
+            serde_json::to_string(body).map_err(|e| format!("JSON serialization failed: {}", e))?;
 
         let opts = RequestInit::new();
         opts.set_method("POST");
@@ -62,23 +73,27 @@ impl AuthService {
         let request = Request::new_with_str_and_init(&url, &opts)
             .map_err(|e| format!("Request creation failed: {:?}", e))?;
 
-        request.headers().set("Content-Type", "application/json")
+        request
+            .headers()
+            .set("Content-Type", "application/json")
             .map_err(|e| format!("Header setting failed: {:?}", e))?;
 
         let resp_value = JsFuture::from(window.fetch_with_request(&request))
             .await
             .map_err(|e| format!("Network request failed: {:?}", e))?;
 
-        let resp: Response = resp_value.dyn_into()
+        let resp: Response = resp_value
+            .dyn_into()
             .map_err(|e| format!("Response cast failed: {:?}", e))?;
 
-        let text = JsFuture::from(resp.text()
-            .map_err(|e| format!("Text extraction failed: {:?}", e))?)
-            .await
-            .map_err(|e| format!("Text promise failed: {:?}", e))?;
+        let text = JsFuture::from(
+            resp.text()
+                .map_err(|e| format!("Text extraction failed: {:?}", e))?,
+        )
+        .await
+        .map_err(|e| format!("Text promise failed: {:?}", e))?;
 
-        let text_string = text.as_string()
-            .ok_or("Response text is not a string")?;
+        let text_string = text.as_string().ok_or("Response text is not a string")?;
 
         if resp.ok() {
             serde_json::from_str::<R>(&text_string)
@@ -92,4 +107,4 @@ impl AuthService {
             }
         }
     }
-}
+}

frontend/src/components/calendar.rs

@@ -1,19 +1,16 @@
-use yew::prelude::*;
-use chrono::{Datelike, Local, NaiveDate, Duration};
+use crate::components::{
+    CalendarHeader, CreateEventModal, EventCreationData, EventModal, MonthView, ViewMode, WeekView,
+};
+use crate::models::ical::VEvent;
+use crate::services::{calendar_service::UserInfo, CalendarService};
+use chrono::{Datelike, Duration, Local, NaiveDate};
+use gloo_storage::{LocalStorage, Storage};
 use std::collections::HashMap;
 use web_sys::MouseEvent;
-use crate::services::calendar_service::UserInfo;
-use crate::models::ical::VEvent;
-use crate::components::{EventModal, ViewMode, CalendarHeader, MonthView, WeekView, CreateEventModal, EventCreationData};
-use gloo_storage::{LocalStorage, Storage};
+use yew::prelude::*;
 
 #[derive(Properties, PartialEq)]
 pub struct CalendarProps {
-    #[prop_or_default]
-    pub events: HashMap<NaiveDate, Vec<VEvent>>,
-    pub on_event_click: Callback<VEvent>,
-    #[prop_or_default]
-    pub refreshing_event_uid: Option<String>,
     #[prop_or_default]
     pub user_info: Option<UserInfo>,
     #[prop_or_default]
@@ -25,7 +22,17 @@ pub struct CalendarProps {
     #[prop_or_default]
     pub on_create_event_request: Option<Callback<EventCreationData>>,
     #[prop_or_default]
-    pub on_event_update_request: Option<Callback<(VEvent, chrono::NaiveDateTime, chrono::NaiveDateTime, bool, Option<chrono::DateTime<chrono::Utc>>, Option<String>, Option<String>)>>,
+    pub on_event_update_request: Option<
+        Callback<(
+            VEvent,
+            chrono::NaiveDateTime,
+            chrono::NaiveDateTime,
+            bool,
+            Option<chrono::DateTime<chrono::Utc>>,
+            Option<String>,
+            Option<String>,
+        )>,
+    >,
     #[prop_or_default]
     pub context_menus_open: bool,
 }
@@ -33,6 +40,12 @@ pub struct CalendarProps {
 #[function_component]
 pub fn Calendar(props: &CalendarProps) -> Html {
     let today = Local::now().date_naive();
+    
+    // Event management state
+    let events = use_state(|| HashMap::<NaiveDate, Vec<VEvent>>::new());
+    let loading = use_state(|| true);
+    let error = use_state(|| None::<String>);
+    let refreshing_event_uid = use_state(|| None::<String>);
     // Track the currently selected date (the actual day the user has selected)
     let selected_date = use_state(|| {
         // Try to load saved selected date from localStorage
@@ -55,20 +68,19 @@ pub fn Calendar(props: &CalendarProps) -> Html {
             }
         }
     });
-    
+
     // Track the display date (what to show in the view)
-    let current_date = use_state(|| {
-        match props.view {
-            ViewMode::Month => selected_date.with_day(1).unwrap_or(*selected_date),
-            ViewMode::Week => *selected_date,
-        }
+    let current_date = use_state(|| match props.view {
+        ViewMode::Month => selected_date.with_day(1).unwrap_or(*selected_date),
+        ViewMode::Week => *selected_date,
     });
     let selected_event = use_state(|| None::<VEvent>);
-    
+
     // State for create event modal
     let show_create_modal = use_state(|| false);
-    let create_event_data = use_state(|| None::<(chrono::NaiveDate, chrono::NaiveTime, chrono::NaiveTime)>);
-    
+    let create_event_data =
+        use_state(|| None::<(chrono::NaiveDate, chrono::NaiveTime, chrono::NaiveTime)>);
+
     // State for time increment snapping (15 or 30 minutes)
     let time_increment = use_state(|| {
         // Try to load saved time increment from localStorage
@@ -82,7 +94,155 @@ pub fn Calendar(props: &CalendarProps) -> Html {
             15
         }
     });
-    
+
+    // Fetch events when current_date changes
+    {
+        let events = events.clone();
+        let loading = loading.clone();
+        let error = error.clone();
+        let current_date = current_date.clone();
+        
+        use_effect_with((*current_date, props.view.clone()), move |(date, _view)| {
+            let auth_token: Option<String> = LocalStorage::get("auth_token").ok();
+            let date = *date; // Clone the date to avoid lifetime issues
+            
+            if let Some(token) = auth_token {
+                let events = events.clone();
+                let loading = loading.clone();
+                let error = error.clone();
+                
+                wasm_bindgen_futures::spawn_local(async move {
+                    let calendar_service = CalendarService::new();
+
+                    let password = if let Ok(credentials_str) =
+                        LocalStorage::get::<String>("caldav_credentials")
+                    {
+                        if let Ok(credentials) =
+                            serde_json::from_str::<serde_json::Value>(&credentials_str)
+                        {
+                            credentials["password"].as_str().unwrap_or("").to_string()
+                        } else {
+                            String::new()
+                        }
+                    } else {
+                        String::new()
+                    };
+
+                    let current_year = date.year();
+                    let current_month = date.month();
+
+                    match calendar_service
+                        .fetch_events_for_month_vevent(
+                            &token,
+                            &password,
+                            current_year,
+                            current_month,
+                        )
+                        .await
+                    {
+                        Ok(vevents) => {
+                            let grouped_events = CalendarService::group_events_by_date(vevents);
+                            events.set(grouped_events);
+                            loading.set(false);
+                        }
+                        Err(err) => {
+                            error.set(Some(format!("Failed to load events: {}", err)));
+                            loading.set(false);
+                        }
+                    }
+                });
+            } else {
+                loading.set(false);
+                error.set(Some("No authentication token found".to_string()));
+            }
+
+            || ()
+        });
+    }
+
+    // Handle event click to refresh individual events
+    let on_event_click = {
+        let events = events.clone();
+        let refreshing_event_uid = refreshing_event_uid.clone();
+        
+        Callback::from(move |event: VEvent| {
+            let auth_token: Option<String> = LocalStorage::get("auth_token").ok();
+            
+            if let Some(token) = auth_token {
+                let events = events.clone();
+                let refreshing_event_uid = refreshing_event_uid.clone();
+                let uid = event.uid.clone();
+
+                refreshing_event_uid.set(Some(uid.clone()));
+
+                wasm_bindgen_futures::spawn_local(async move {
+                    let calendar_service = CalendarService::new();
+
+                    let password = if let Ok(credentials_str) =
+                        LocalStorage::get::<String>("caldav_credentials")
+                    {
+                        if let Ok(credentials) =
+                            serde_json::from_str::<serde_json::Value>(&credentials_str)
+                        {
+                            credentials["password"].as_str().unwrap_or("").to_string()
+                        } else {
+                            String::new()
+                        }
+                    } else {
+                        String::new()
+                    };
+
+                    match calendar_service
+                        .refresh_event(&token, &password, &uid)
+                        .await
+                    {
+                        Ok(Some(refreshed_event)) => {
+                            let refreshed_vevent = refreshed_event;
+                            let mut updated_events = (*events).clone();
+
+                            for (_, day_events) in updated_events.iter_mut() {
+                                day_events.retain(|e| e.uid != uid);
+                            }
+
+                            if refreshed_vevent.rrule.is_some() {
+                                let new_occurrences =
+                                    CalendarService::expand_recurring_events(vec![
+                                        refreshed_vevent.clone(),
+                                    ]);
+
+                                for occurrence in new_occurrences {
+                                    let date = occurrence.get_date();
+                                    updated_events
+                                        .entry(date)
+                                        .or_insert_with(Vec::new)
+                                        .push(occurrence);
+                                }
+                            } else {
+                                let date = refreshed_vevent.get_date();
+                                updated_events
+                                    .entry(date)
+                                    .or_insert_with(Vec::new)
+                                    .push(refreshed_vevent);
+                            }
+
+                            events.set(updated_events);
+                        }
+                        Ok(None) => {
+                            let mut updated_events = (*events).clone();
+                            for (_, day_events) in updated_events.iter_mut() {
+                                day_events.retain(|e| e.uid != uid);
+                            }
+                            events.set(updated_events);
+                        }
+                        Err(_err) => {}
+                    }
+
+                    refreshing_event_uid.set(None);
+                });
+            }
+        })
+    };
+
     // Handle view mode changes - adjust current_date format when switching between month/week
     {
         let current_date = current_date.clone();
@@ -98,7 +258,7 @@ pub fn Calendar(props: &CalendarProps) -> Html {
             || {}
         });
     }
-    
+
     let on_prev = {
         let current_date = current_date.clone();
         let selected_date = selected_date.clone();
@@ -110,19 +270,22 @@ pub fn Calendar(props: &CalendarProps) -> Html {
                     let prev_month = *current_date - Duration::days(1);
                     let first_of_prev = prev_month.with_day(1).unwrap();
                     (first_of_prev, first_of_prev)
-                },
+                }
                 ViewMode::Week => {
                     // Go to previous week
                     let prev_week = *selected_date - Duration::weeks(1);
                     (prev_week, prev_week)
-                },
+                }
             };
             selected_date.set(new_selected);
             current_date.set(new_display);
-            let _ = LocalStorage::set("calendar_selected_date", new_selected.format("%Y-%m-%d").to_string());
+            let _ = LocalStorage::set(
+                "calendar_selected_date",
+                new_selected.format("%Y-%m-%d").to_string(),
+            );
         })
     };
-    
+
     let on_next = {
         let current_date = current_date.clone();
         let selected_date = selected_date.clone();
@@ -134,19 +297,23 @@ pub fn Calendar(props: &CalendarProps) -> Html {
                     let next_month = if current_date.month() == 12 {
                         NaiveDate::from_ymd_opt(current_date.year() + 1, 1, 1).unwrap()
                     } else {
-                        NaiveDate::from_ymd_opt(current_date.year(), current_date.month() + 1, 1).unwrap()
+                        NaiveDate::from_ymd_opt(current_date.year(), current_date.month() + 1, 1)
+                            .unwrap()
                     };
                     (next_month, next_month)
-                },
+                }
                 ViewMode::Week => {
                     // Go to next week
                     let next_week = *selected_date + Duration::weeks(1);
                     (next_week, next_week)
-                },
+                }
             };
             selected_date.set(new_selected);
             current_date.set(new_display);
-            let _ = LocalStorage::set("calendar_selected_date", new_selected.format("%Y-%m-%d").to_string());
+            let _ = LocalStorage::set(
+                "calendar_selected_date",
+                new_selected.format("%Y-%m-%d").to_string(),
+            );
         })
     };
 
@@ -160,15 +327,18 @@ pub fn Calendar(props: &CalendarProps) -> Html {
                 ViewMode::Month => {
                     let first_of_today = today.with_day(1).unwrap();
                     (today, first_of_today) // Select today, but display the month
-                },
+                }
                 ViewMode::Week => (today, today), // Select and display today
             };
             selected_date.set(new_selected);
             current_date.set(new_display);
-            let _ = LocalStorage::set("calendar_selected_date", new_selected.format("%Y-%m-%d").to_string());
+            let _ = LocalStorage::set(
+                "calendar_selected_date",
+                new_selected.format("%Y-%m-%d").to_string(),
+            );
         })
     };
-    
+
     // Handle time increment toggle
     let on_time_increment_toggle = {
         let time_increment = time_increment.clone();
@@ -179,32 +349,68 @@ pub fn Calendar(props: &CalendarProps) -> Html {
             let _ = LocalStorage::set("calendar_time_increment", next);
         })
     };
-    
+
     // Handle drag-to-create event
     let on_create_event = {
         let show_create_modal = show_create_modal.clone();
         let create_event_data = create_event_data.clone();
-        Callback::from(move |(_date, start_datetime, end_datetime): (NaiveDate, chrono::NaiveDateTime, chrono::NaiveDateTime)| {
-            // For drag-to-create, we don't need the temporary event approach
-            // Instead, just pass the local times directly via initial_time props
-            create_event_data.set(Some((start_datetime.date(), start_datetime.time(), end_datetime.time())));
-            show_create_modal.set(true);
-        })
+        Callback::from(
+            move |(_date, start_datetime, end_datetime): (
+                NaiveDate,
+                chrono::NaiveDateTime,
+                chrono::NaiveDateTime,
+            )| {
+                // For drag-to-create, we don't need the temporary event approach
+                // Instead, just pass the local times directly via initial_time props
+                create_event_data.set(Some((
+                    start_datetime.date(),
+                    start_datetime.time(),
+                    end_datetime.time(),
+                )));
+                show_create_modal.set(true);
+            },
+        )
     };
-    
+
     // Handle drag-to-move event
     let on_event_update = {
         let on_event_update_request = props.on_event_update_request.clone();
-        Callback::from(move |(event, new_start, new_end, preserve_rrule, until_date, update_scope, occurrence_date): (VEvent, chrono::NaiveDateTime, chrono::NaiveDateTime, bool, Option<chrono::DateTime<chrono::Utc>>, Option<String>, Option<String>)| {
-            if let Some(callback) = &on_event_update_request {
-                callback.emit((event, new_start, new_end, preserve_rrule, until_date, update_scope, occurrence_date));
-            }
-        })
+        Callback::from(
+            move |(
+                event,
+                new_start,
+                new_end,
+                preserve_rrule,
+                until_date,
+                update_scope,
+                occurrence_date,
+            ): (
+                VEvent,
+                chrono::NaiveDateTime,
+                chrono::NaiveDateTime,
+                bool,
+                Option<chrono::DateTime<chrono::Utc>>,
+                Option<String>,
+                Option<String>,
+            )| {
+                if let Some(callback) = &on_event_update_request {
+                    callback.emit((
+                        event,
+                        new_start,
+                        new_end,
+                        preserve_rrule,
+                        until_date,
+                        update_scope,
+                        occurrence_date,
+                    ));
+                }
+            },
+        )
     };
 
     html! {
         <div class={classes!("calendar", match props.view { ViewMode::Week => Some("week-view"), _ => None })}>
-            <CalendarHeader 
+            <CalendarHeader
                 current_date={*current_date}
                 view_mode={props.view.clone()}
                 on_prev={on_prev}
@@ -213,9 +419,22 @@ pub fn Calendar(props: &CalendarProps) -> Html {
                 time_increment={Some(*time_increment)}
                 on_time_increment_toggle={Some(on_time_increment_toggle)}
             />
-            
+
             {
-                match props.view {
+                if *loading {
+                    html! {
+                        <div class="calendar-loading">
+                            <p>{"Loading calendar events..."}</p>
+                        </div>
+                    }
+                } else if let Some(err) = (*error).clone() {
+                    html! {
+                        <div class="calendar-error">
+                            <p>{format!("Error: {}", err)}</p>
+                        </div>
+                    }
+                } else {
+                    match props.view {
                     ViewMode::Month => {
                         let on_day_select = {
                             let selected_date = selected_date.clone();
@@ -224,14 +443,14 @@ pub fn Calendar(props: &CalendarProps) -> Html {
                                 let _ = LocalStorage::set("calendar_selected_date", date.format("%Y-%m-%d").to_string());
                             })
                         };
-                        
+
                         html! {
                             <MonthView
                                 current_month={*current_date}
                                 today={today}
-                                events={props.events.clone()}
-                                on_event_click={props.on_event_click.clone()}
-                                refreshing_event_uid={props.refreshing_event_uid.clone()}
+                                events={(*events).clone()}
+                                on_event_click={on_event_click.clone()}
+                                refreshing_event_uid={(*refreshing_event_uid).clone()}
                                 user_info={props.user_info.clone()}
                                 on_event_context_menu={props.on_event_context_menu.clone()}
                                 on_calendar_context_menu={props.on_calendar_context_menu.clone()}
@@ -244,9 +463,9 @@ pub fn Calendar(props: &CalendarProps) -> Html {
                         <WeekView
                             current_date={*current_date}
                             today={today}
-                            events={props.events.clone()}
-                            on_event_click={props.on_event_click.clone()}
-                            refreshing_event_uid={props.refreshing_event_uid.clone()}
+                            events={(*events).clone()}
+                            on_event_click={on_event_click.clone()}
+                            refreshing_event_uid={(*refreshing_event_uid).clone()}
                             user_info={props.user_info.clone()}
                             on_event_context_menu={props.on_event_context_menu.clone()}
                             on_calendar_context_menu={props.on_calendar_context_menu.clone()}
@@ -257,11 +476,12 @@ pub fn Calendar(props: &CalendarProps) -> Html {
                             time_increment={*time_increment}
                         />
                     },
+                    }
                 }
             }
-            
+
             // Event details modal
-            <EventModal 
+            <EventModal
                 event={(*selected_event).clone()}
                 on_close={{
                     let selected_event_clone = selected_event.clone();
@@ -270,7 +490,7 @@ pub fn Calendar(props: &CalendarProps) -> Html {
                     })
                 }}
             />
-            
+
             // Create event modal
             <CreateEventModal
                 is_open={*show_create_modal}
@@ -294,7 +514,7 @@ pub fn Calendar(props: &CalendarProps) -> Html {
                     Callback::from(move |event_data: EventCreationData| {
                         show_create_modal.set(false);
                         create_event_data.set(None);
-                        
+
                         // Emit the create event request to parent
                         if let Some(callback) = &on_create_event_request {
                             callback.emit(event_data);
@@ -313,4 +533,4 @@ pub fn Calendar(props: &CalendarProps) -> Html {
             />
         </div>
     }
-}
+}

frontend/src/components/calendar_context_menu.rs

@@ -1,5 +1,5 @@
-use yew::prelude::*;
 use web_sys::MouseEvent;
+use yew::prelude::*;
 
 #[derive(Properties, PartialEq)]
 pub struct CalendarContextMenuProps {
@@ -13,7 +13,7 @@ pub struct CalendarContextMenuProps {
 #[function_component(CalendarContextMenu)]
 pub fn calendar_context_menu(props: &CalendarContextMenuProps) -> Html {
     let menu_ref = use_node_ref();
-    
+
     if !props.is_open {
         return html! {};
     }
@@ -33,9 +33,9 @@ pub fn calendar_context_menu(props: &CalendarContextMenuProps) -> Html {
     };
 
     html! {
-        <div 
+        <div
             ref={menu_ref}
-            class="context-menu" 
+            class="context-menu"
             style={style}
         >
             <div class="context-menu-item context-menu-create" onclick={on_create_event_click}>
@@ -44,4 +44,4 @@ pub fn calendar_context_menu(props: &CalendarContextMenuProps) -> Html {
             </div>
         </div>
     }
-}
+}

frontend/src/components/calendar_header.rs

@@ -1,7 +1,7 @@
-use yew::prelude::*;
-use chrono::{NaiveDate, Datelike};
 use crate::components::ViewMode;
+use chrono::{Datelike, NaiveDate};
 use web_sys::MouseEvent;
+use yew::prelude::*;
 
 #[derive(Properties, PartialEq)]
 pub struct CalendarHeaderProps {
@@ -18,7 +18,11 @@ pub struct CalendarHeaderProps {
 
 #[function_component(CalendarHeader)]
 pub fn calendar_header(props: &CalendarHeaderProps) -> Html {
-    let title = format!("{} {}", get_month_name(props.current_date.month()), props.current_date.year());
+    let title = format!(
+        "{} {}",
+        get_month_name(props.current_date.month()),
+        props.current_date.year()
+    );
 
     html! {
         <div class="calendar-header">
@@ -48,7 +52,7 @@ pub fn calendar_header(props: &CalendarHeaderProps) -> Html {
 fn get_month_name(month: u32) -> &'static str {
     match month {
         1 => "January",
-        2 => "February", 
+        2 => "February",
         3 => "March",
         4 => "April",
         5 => "May",
@@ -59,6 +63,6 @@ fn get_month_name(month: u32) -> &'static str {
         10 => "October",
         11 => "November",
         12 => "December",
-        _ => "Invalid"
+        _ => "Invalid",
     }
-}
+}

frontend/src/components/calendar_list_item.rs

@@ -1,13 +1,13 @@
-use yew::prelude::*;
-use web_sys::MouseEvent;
 use crate::services::calendar_service::CalendarInfo;
+use web_sys::MouseEvent;
+use yew::prelude::*;
 
 #[derive(Properties, PartialEq)]
 pub struct CalendarListItemProps {
     pub calendar: CalendarInfo,
     pub color_picker_open: bool,
     pub on_color_change: Callback<(String, String)>, // (calendar_path, color)
-    pub on_color_picker_toggle: Callback<String>, // calendar_path
+    pub on_color_picker_toggle: Callback<String>,    // calendar_path
     pub available_colors: Vec<String>,
     pub on_context_menu: Callback<(MouseEvent, String)>, // (event, calendar_path)
 }
@@ -34,7 +34,7 @@ pub fn calendar_list_item(props: &CalendarListItemProps) -> Html {
 
     html! {
         <li key={props.calendar.path.clone()} oncontextmenu={on_context_menu}>
-            <span class="calendar-color" 
+            <span class="calendar-color"
                   style={format!("background-color: {}", props.calendar.color)}
                   onclick={on_color_click}>
                 {
@@ -46,14 +46,14 @@ pub fn calendar_list_item(props: &CalendarListItemProps) -> Html {
                                         let color_str = color.clone();
                                         let cal_path = props.calendar.path.clone();
                                         let on_color_change = props.on_color_change.clone();
-                                        
+
                                         let on_color_select = Callback::from(move |_: MouseEvent| {
                                             on_color_change.emit((cal_path.clone(), color_str.clone()));
                                         });
-                                        
+
                                         let is_selected = props.calendar.color == *color;
                                         let class_name = if is_selected { "color-option selected" } else { "color-option" };
-                                        
+
                                         html! {
                                             <div class={class_name}
                                                  style={format!("background-color: {}", color)}
@@ -72,4 +72,4 @@ pub fn calendar_list_item(props: &CalendarListItemProps) -> Html {
             <span class="calendar-name">{&props.calendar.display_name}</span>
         </li>
     }
-}
+}

frontend/src/components/context_menu.rs

@@ -1,5 +1,5 @@
-use yew::prelude::*;
 use web_sys::MouseEvent;
+use yew::prelude::*;
 
 #[derive(Properties, PartialEq)]
 pub struct ContextMenuProps {
@@ -13,7 +13,7 @@ pub struct ContextMenuProps {
 #[function_component(ContextMenu)]
 pub fn context_menu(props: &ContextMenuProps) -> Html {
     let menu_ref = use_node_ref();
-    
+
     // Close menu when clicking outside (handled by parent component)
 
     if !props.is_open {
@@ -35,9 +35,9 @@ pub fn context_menu(props: &ContextMenuProps) -> Html {
     };
 
     html! {
-        <div 
+        <div
             ref={menu_ref}
-            class="context-menu" 
+            class="context-menu"
             style={style}
         >
             <div class="context-menu-item context-menu-delete" onclick={on_delete_click}>
@@ -45,4 +45,4 @@ pub fn context_menu(props: &ContextMenuProps) -> Html {
             </div>
         </div>
     }
-}
+}

frontend/src/components/create_calendar_modal.rs

@@ -39,30 +39,32 @@ pub fn CreateCalendarModal(props: &CreateCalendarModalProps) -> Html {
         let error_message = error_message.clone();
         let is_creating = is_creating.clone();
         let on_create = props.on_create.clone();
-        
+
         Callback::from(move |e: SubmitEvent| {
             e.prevent_default();
-            
+
             let name = (*calendar_name).trim();
             if name.is_empty() {
                 error_message.set(Some("Calendar name is required".to_string()));
                 return;
             }
-            
+
             if name.len() > 100 {
-                error_message.set(Some("Calendar name too long (max 100 characters)".to_string()));
+                error_message.set(Some(
+                    "Calendar name too long (max 100 characters)".to_string(),
+                ));
                 return;
             }
-            
+
             error_message.set(None);
             is_creating.set(true);
-            
+
             let desc = if (*description).trim().is_empty() {
                 None
             } else {
                 Some((*description).clone())
             };
-            
+
             on_create.emit((name.to_string(), desc, (*selected_color).clone()));
         })
     };
@@ -90,7 +92,7 @@ pub fn CreateCalendarModal(props: &CreateCalendarModalProps) -> Html {
                         {"×"}
                     </button>
                 </div>
-                
+
                 <form class="modal-body" onsubmit={on_submit}>
                     {
                         if let Some(ref error) = *error_message {
@@ -103,10 +105,10 @@ pub fn CreateCalendarModal(props: &CreateCalendarModalProps) -> Html {
                             html! {}
                         }
                     }
-                    
+
                     <div class="form-group">
                         <label for="calendar-name">{"Calendar Name *"}</label>
-                        <input 
+                        <input
                             id="calendar-name"
                             type="text"
                             value={(*calendar_name).clone()}
@@ -116,7 +118,7 @@ pub fn CreateCalendarModal(props: &CreateCalendarModalProps) -> Html {
                             disabled={*is_creating}
                         />
                     </div>
-                    
+
                     <div class="form-group">
                         <label for="calendar-description">{"Description"}</label>
                         <textarea
@@ -128,7 +130,7 @@ pub fn CreateCalendarModal(props: &CreateCalendarModalProps) -> Html {
                             disabled={*is_creating}
                         />
                     </div>
-                    
+
                     <div class="form-group">
                         <label>{"Calendar Color"}</label>
                         <div class="color-grid">
@@ -143,13 +145,13 @@ pub fn CreateCalendarModal(props: &CreateCalendarModalProps) -> Html {
                                             selected_color.set(Some(color.clone()));
                                         })
                                     };
-                                    
-                                    let class_name = if is_selected { 
-                                        "color-option selected" 
-                                    } else { 
-                                        "color-option" 
+
+                                    let class_name = if is_selected {
+                                        "color-option selected"
+                                    } else {
+                                        "color-option"
                                     };
-                                    
+
                                     html! {
                                         <button
                                             key={index}
@@ -165,18 +167,18 @@ pub fn CreateCalendarModal(props: &CreateCalendarModalProps) -> Html {
                         </div>
                         <p class="color-help-text">{"Optional: Choose a color for your calendar"}</p>
                     </div>
-                    
+
                     <div class="modal-actions">
-                        <button 
-                            type="button" 
+                        <button
+                            type="button"
                             class="cancel-button"
                             onclick={props.on_close.reform(|_| ())}
                             disabled={*is_creating}
                         >
                             {"Cancel"}
                         </button>
-                        <button 
-                            type="submit" 
+                        <button
+                            type="submit"
                             class="create-button"
                             disabled={*is_creating}
                         >
@@ -193,4 +195,4 @@ pub fn CreateCalendarModal(props: &CreateCalendarModalProps) -> Html {
             </div>
         </div>
     }
-}
+}

frontend/src/components/event_context_menu.rs

@@ -1,6 +1,6 @@
-use yew::prelude::*;
-use web_sys::MouseEvent;
 use crate::models::ical::VEvent;
+use web_sys::MouseEvent;
+use yew::prelude::*;
 
 #[derive(Clone, PartialEq, Debug)]
 pub enum DeleteAction {
@@ -9,13 +9,20 @@ pub enum DeleteAction {
     DeleteSeries,
 }
 
+#[derive(Clone, PartialEq, Debug)]
+pub enum EditAction {
+    EditThis,
+    EditFuture,
+    EditAll,
+}
+
 #[derive(Properties, PartialEq)]
 pub struct EventContextMenuProps {
     pub is_open: bool,
     pub x: i32,
     pub y: i32,
     pub event: Option<VEvent>,
-    pub on_edit: Callback<()>,
+    pub on_edit: Callback<EditAction>,
     pub on_delete: Callback<DeleteAction>,
     pub on_close: Callback<()>,
 }
@@ -23,7 +30,7 @@ pub struct EventContextMenuProps {
 #[function_component(EventContextMenu)]
 pub fn event_context_menu(props: &EventContextMenuProps) -> Html {
     let menu_ref = use_node_ref();
-    
+
     if !props.is_open {
         return html! {};
     }
@@ -34,15 +41,17 @@ pub fn event_context_menu(props: &EventContextMenuProps) -> Html {
     );
 
     // Check if the event is recurring
-    let is_recurring = props.event.as_ref()
+    let is_recurring = props
+        .event
+        .as_ref()
         .map(|event| event.rrule.is_some())
         .unwrap_or(false);
 
-    let on_edit_click = {
+    let create_edit_callback = |action: EditAction| {
         let on_edit = props.on_edit.clone();
         let on_close = props.on_close.clone();
         Callback::from(move |_: MouseEvent| {
-            on_edit.emit(());
+            on_edit.emit(action.clone());
             on_close.emit(());
         })
     };
@@ -57,14 +66,34 @@ pub fn event_context_menu(props: &EventContextMenuProps) -> Html {
     };
 
     html! {
-        <div 
+        <div
             ref={menu_ref}
-            class="context-menu" 
+            class="context-menu"
             style={style}
         >
-            <div class="context-menu-item" onclick={on_edit_click}>
-                {"Edit Event"}
-            </div>
+            {
+                if is_recurring {
+                    html! {
+                        <>
+                            <div class="context-menu-item" onclick={create_edit_callback(EditAction::EditThis)}>
+                                {"Edit This Event"}
+                            </div>
+                            <div class="context-menu-item" onclick={create_edit_callback(EditAction::EditFuture)}>
+                                {"Edit This and Future Events"}
+                            </div>
+                            <div class="context-menu-item" onclick={create_edit_callback(EditAction::EditAll)}>
+                                {"Edit All Events in Series"}
+                            </div>
+                        </>
+                    }
+                } else {
+                    html! {
+                        <div class="context-menu-item" onclick={create_edit_callback(EditAction::EditThis)}>
+                            {"Edit Event"}
+                        </div>
+                    }
+                }
+            }
             {
                 if is_recurring {
                     html! {
@@ -90,4 +119,4 @@ pub fn event_context_menu(props: &EventContextMenuProps) -> Html {
             }
         </div>
     }
-}
+}

frontend/src/components/event_modal.rs

@@ -1,6 +1,6 @@
-use yew::prelude::*;
-use chrono::{DateTime, Utc};
 use crate::models::ical::VEvent;
+use chrono::{DateTime, Utc};
+use yew::prelude::*;
 
 #[derive(Properties, PartialEq)]
 pub struct EventModalProps {
@@ -16,7 +16,7 @@ pub fn EventModal(props: &EventModalProps) -> Html {
             on_close.emit(());
         })
     };
-    
+
     let backdrop_click = {
         let on_close = props.on_close.clone();
         Callback::from(move |e: MouseEvent| {
@@ -39,7 +39,7 @@ pub fn EventModal(props: &EventModalProps) -> Html {
                             <strong>{"Title:"}</strong>
                             <span>{event.get_title()}</span>
                         </div>
-                        
+
                         {
                             if let Some(ref description) = event.description {
                                 html! {
@@ -52,12 +52,12 @@ pub fn EventModal(props: &EventModalProps) -> Html {
                                 html! {}
                             }
                         }
-                        
+
                         <div class="event-detail">
                             <strong>{"Start:"}</strong>
                             <span>{format_datetime(&event.dtstart, event.all_day)}</span>
                         </div>
-                        
+
                         {
                             if let Some(ref end) = event.dtend {
                                 html! {
@@ -70,12 +70,12 @@ pub fn EventModal(props: &EventModalProps) -> Html {
                                 html! {}
                             }
                         }
-                        
+
                         <div class="event-detail">
                             <strong>{"All Day:"}</strong>
                             <span>{if event.all_day { "Yes" } else { "No" }}</span>
                         </div>
-                        
+
                         {
                             if let Some(ref location) = event.location {
                                 html! {
@@ -88,22 +88,22 @@ pub fn EventModal(props: &EventModalProps) -> Html {
                                 html! {}
                             }
                         }
-                        
+
                         <div class="event-detail">
                             <strong>{"Status:"}</strong>
                             <span>{event.get_status_display()}</span>
                         </div>
-                        
+
                         <div class="event-detail">
                             <strong>{"Privacy:"}</strong>
                             <span>{event.get_class_display()}</span>
                         </div>
-                        
+
                         <div class="event-detail">
                             <strong>{"Priority:"}</strong>
                             <span>{event.get_priority_display()}</span>
                         </div>
-                        
+
                         {
                             if let Some(ref organizer) = event.organizer {
                                 html! {
@@ -116,7 +116,7 @@ pub fn EventModal(props: &EventModalProps) -> Html {
                                 html! {}
                             }
                         }
-                        
+
                         {
                             if !event.attendees.is_empty() {
                                 html! {
@@ -129,7 +129,7 @@ pub fn EventModal(props: &EventModalProps) -> Html {
                                 html! {}
                             }
                         }
-                        
+
                         {
                             if !event.categories.is_empty() {
                                 html! {
@@ -142,7 +142,7 @@ pub fn EventModal(props: &EventModalProps) -> Html {
                                 html! {}
                             }
                         }
-                        
+
                         {
                             if let Some(ref recurrence) = event.rrule {
                                 html! {
@@ -160,7 +160,7 @@ pub fn EventModal(props: &EventModalProps) -> Html {
                                 }
                             }
                         }
-                        
+
                         {
                             if !event.alarms.is_empty() {
                                 html! {
@@ -178,7 +178,7 @@ pub fn EventModal(props: &EventModalProps) -> Html {
                                 }
                             }
                         }
-                        
+
                         {
                             if let Some(ref created) = event.created {
                                 html! {
@@ -191,7 +191,7 @@ pub fn EventModal(props: &EventModalProps) -> Html {
                                 html! {}
                             }
                         }
-                        
+
                         {
                             if let Some(ref modified) = event.last_modified {
                                 html! {
@@ -236,4 +236,3 @@ fn format_recurrence_rule(rrule: &str) -> String {
         format!("Custom ({})", rrule)
     }
 }
-

frontend/src/components/login.rs

@@ -1,6 +1,6 @@
-use yew::prelude::*;
-use web_sys::HtmlInputElement;
 use gloo_storage::{LocalStorage, Storage};
+use web_sys::HtmlInputElement;
+use yew::prelude::*;
 
 #[derive(Properties, PartialEq)]
 pub struct LoginProps {
@@ -9,11 +9,20 @@ pub struct LoginProps {
 
 #[function_component]
 pub fn Login(props: &LoginProps) -> Html {
-    let server_url = use_state(String::new);
-    let username = use_state(String::new);
+    // Load remembered values from LocalStorage on mount
+    let server_url = use_state(|| {
+        LocalStorage::get::<String>("remembered_server_url").unwrap_or_default()
+    });
+    let username = use_state(|| {
+        LocalStorage::get::<String>("remembered_username").unwrap_or_default()
+    });
     let password = use_state(String::new);
     let error_message = use_state(|| Option::<String>::None);
     let is_loading = use_state(|| false);
+    
+    // Remember checkboxes state - default to checked
+    let remember_server = use_state(|| true);
+    let remember_username = use_state(|| true);
 
     let server_url_ref = use_node_ref();
     let username_ref = use_node_ref();
@@ -42,6 +51,38 @@ pub fn Login(props: &LoginProps) -> Html {
             password.set(target.value());
         })
     };
+    
+    let on_remember_server_change = {
+        let remember_server = remember_server.clone();
+        let server_url = server_url.clone();
+        Callback::from(move |e: Event| {
+            let target = e.target_unchecked_into::<HtmlInputElement>();
+            let checked = target.checked();
+            remember_server.set(checked);
+            
+            if checked {
+                let _ = LocalStorage::set("remembered_server_url", (*server_url).clone());
+            } else {
+                let _ = LocalStorage::delete("remembered_server_url");
+            }
+        })
+    };
+    
+    let on_remember_username_change = {
+        let remember_username = remember_username.clone();
+        let username = username.clone();
+        Callback::from(move |e: Event| {
+            let target = e.target_unchecked_into::<HtmlInputElement>();
+            let checked = target.checked();
+            remember_username.set(checked);
+            
+            if checked {
+                let _ = LocalStorage::set("remembered_username", (*username).clone());
+            } else {
+                let _ = LocalStorage::delete("remembered_username");
+            }
+        })
+    };
 
     let on_submit = {
         let server_url = server_url.clone();
@@ -53,7 +94,7 @@ pub fn Login(props: &LoginProps) -> Html {
 
         Callback::from(move |e: SubmitEvent| {
             e.prevent_default();
-            
+
             let server_url = (*server_url).clone();
             let username = (*username).clone();
             let password = (*password).clone();
@@ -73,11 +114,18 @@ pub fn Login(props: &LoginProps) -> Html {
             wasm_bindgen_futures::spawn_local(async move {
                 web_sys::console::log_1(&"🚀 Starting login process...".into());
                 match perform_login(server_url.clone(), username.clone(), password.clone()).await {
-                    Ok((token, credentials)) => {
+                    Ok((token, session_token, credentials, preferences)) => {
                         web_sys::console::log_1(&"✅ Login successful!".into());
                         // Store token and credentials in local storage
                         if let Err(_) = LocalStorage::set("auth_token", &token) {
-                            error_message.set(Some("Failed to store authentication token".to_string()));
+                            error_message
+                                .set(Some("Failed to store authentication token".to_string()));
+                            is_loading.set(false);
+                            return;
+                        }
+                        if let Err(_) = LocalStorage::set("session_token", &session_token) {
+                            error_message
+                                .set(Some("Failed to store session token".to_string()));
                             is_loading.set(false);
                             return;
                         }
@@ -87,6 +135,11 @@ pub fn Login(props: &LoginProps) -> Html {
                             return;
                         }
                         
+                        // Store preferences from database
+                        if let Ok(prefs_json) = serde_json::to_string(&preferences) {
+                            let _ = LocalStorage::set("user_preferences", &prefs_json);
+                        }
+
                         is_loading.set(false);
                         on_login.emit(token);
                     }
@@ -116,6 +169,15 @@ pub fn Login(props: &LoginProps) -> Html {
                             onchange={on_server_url_change}
                             disabled={*is_loading}
                         />
+                        <div class="remember-checkbox">
+                            <input
+                                type="checkbox"
+                                id="remember_server"
+                                checked={*remember_server}
+                                onchange={on_remember_server_change}
+                            />
+                            <label for="remember_server">{"Remember server"}</label>
+                        </div>
                     </div>
 
                     <div class="form-group">
@@ -129,6 +191,15 @@ pub fn Login(props: &LoginProps) -> Html {
                             onchange={on_username_change}
                             disabled={*is_loading}
                         />
+                        <div class="remember-checkbox">
+                            <input
+                                type="checkbox"
+                                id="remember_username"
+                                checked={*remember_username}
+                                onchange={on_remember_username_change}
+                            />
+                            <label for="remember_username">{"Remember username"}</label>
+                        </div>
                     </div>
 
                     <div class="form-group">
@@ -172,21 +243,25 @@ pub fn Login(props: &LoginProps) -> Html {
 }
 
 /// Perform login using the CalDAV auth service
-async fn perform_login(server_url: String, username: String, password: String) -> Result<(String, String), String> {
+async fn perform_login(
+    server_url: String,
+    username: String,
+    password: String,
+) -> Result<(String, String, String, serde_json::Value), String> {
     use crate::auth::{AuthService, CalDAVLoginRequest};
     use serde_json;
-    
+
     web_sys::console::log_1(&format!("📡 Creating auth service and request...").into());
-    
+
     let auth_service = AuthService::new();
-    let request = CalDAVLoginRequest { 
-        server_url: server_url.clone(), 
-        username: username.clone(), 
-        password: password.clone() 
+    let request = CalDAVLoginRequest {
+        server_url: server_url.clone(),
+        username: username.clone(),
+        password: password.clone(),
     };
-    
+
     web_sys::console::log_1(&format!("🚀 Sending login request to backend...").into());
-    
+
     match auth_service.login(request).await {
         Ok(response) => {
             web_sys::console::log_1(&format!("✅ Backend responded successfully").into());
@@ -196,11 +271,21 @@ async fn perform_login(server_url: String, username: String, password: String) -
                 "username": username,
                 "password": password
             });
-            Ok((response.token, credentials.to_string()))
-        },
+            
+            // Extract preferences as JSON
+            let preferences = serde_json::json!({
+                "calendar_selected_date": response.preferences.calendar_selected_date,
+                "calendar_time_increment": response.preferences.calendar_time_increment,
+                "calendar_view_mode": response.preferences.calendar_view_mode,
+                "calendar_theme": response.preferences.calendar_theme,
+                "calendar_colors": response.preferences.calendar_colors,
+            });
+            
+            Ok((response.token, response.session_token, credentials.to_string(), preferences))
+        }
         Err(err) => {
             web_sys::console::log_1(&format!("❌ Backend error: {}", err).into());
             Err(err)
-        },
+        }
     }
-}
+}

frontend/src/components/mod.rs

@@ -1,31 +1,33 @@
-pub mod login;
 pub mod calendar;
-pub mod calendar_header;
-pub mod month_view;
-pub mod week_view;
-pub mod event_modal;
-pub mod create_calendar_modal;
-pub mod context_menu;
-pub mod event_context_menu;
 pub mod calendar_context_menu;
-pub mod create_event_modal;
-pub mod sidebar;
+pub mod calendar_header;
 pub mod calendar_list_item;
-pub mod route_handler;
+pub mod context_menu;
+pub mod create_calendar_modal;
+pub mod create_event_modal;
+pub mod event_context_menu;
+pub mod event_modal;
+pub mod login;
+pub mod month_view;
 pub mod recurring_edit_modal;
+pub mod route_handler;
+pub mod sidebar;
+pub mod week_view;
 
-pub use login::Login;
 pub use calendar::Calendar;
-pub use calendar_header::CalendarHeader;
-pub use month_view::MonthView;
-pub use week_view::WeekView;
-pub use event_modal::EventModal;
-pub use create_calendar_modal::CreateCalendarModal;
-pub use context_menu::ContextMenu;
-pub use event_context_menu::{EventContextMenu, DeleteAction};
 pub use calendar_context_menu::CalendarContextMenu;
-pub use create_event_modal::{CreateEventModal, EventCreationData, EventStatus, EventClass, ReminderType, RecurrenceType};
-pub use sidebar::{Sidebar, ViewMode, Theme};
+pub use calendar_header::CalendarHeader;
 pub use calendar_list_item::CalendarListItem;
+pub use context_menu::ContextMenu;
+pub use create_calendar_modal::CreateCalendarModal;
+pub use create_event_modal::{
+    CreateEventModal, EventClass, EventCreationData, EventStatus, RecurrenceType, ReminderType,
+};
+pub use event_context_menu::{DeleteAction, EditAction, EventContextMenu};
+pub use event_modal::EventModal;
+pub use login::Login;
+pub use month_view::MonthView;
+pub use recurring_edit_modal::{RecurringEditAction, RecurringEditModal};
 pub use route_handler::RouteHandler;
-pub use recurring_edit_modal::{RecurringEditModal, RecurringEditAction};
+pub use sidebar::{Sidebar, Theme, ViewMode};
+pub use week_view::WeekView;

frontend/src/components/month_view.rs

@@ -1,10 +1,10 @@
-use yew::prelude::*;
+use crate::models::ical::VEvent;
+use crate::services::calendar_service::UserInfo;
 use chrono::{Datelike, NaiveDate, Weekday};
 use std::collections::HashMap;
-use web_sys::window;
 use wasm_bindgen::{prelude::*, JsCast};
-use crate::services::calendar_service::UserInfo;
-use crate::models::ical::VEvent;
+use web_sys::window;
+use yew::prelude::*;
 
 #[derive(Properties, PartialEq)]
 pub struct MonthViewProps {
@@ -52,30 +52,33 @@ pub fn month_view(props: &MonthViewProps) -> Html {
         let calculate_max_events = calculate_max_events.clone();
         use_effect_with((), move |_| {
             let calculate_max_events_clone = calculate_max_events.clone();
-            
+
             // Initial calculation with a slight delay to ensure DOM is ready
             if let Some(window) = window() {
                 let timeout_closure = Closure::wrap(Box::new(move || {
                     calculate_max_events_clone();
                 }) as Box<dyn FnMut()>);
-                
+
                 let _ = window.set_timeout_with_callback_and_timeout_and_arguments_0(
                     timeout_closure.as_ref().unchecked_ref(),
                     100,
                 );
                 timeout_closure.forget();
             }
-            
+
             // Setup resize listener
             let resize_closure = Closure::wrap(Box::new(move || {
                 calculate_max_events();
             }) as Box<dyn Fn()>);
-            
+
             if let Some(window) = window() {
-                let _ = window.add_event_listener_with_callback("resize", resize_closure.as_ref().unchecked_ref());
+                let _ = window.add_event_listener_with_callback(
+                    "resize",
+                    resize_closure.as_ref().unchecked_ref(),
+                );
                 resize_closure.forget(); // Keep the closure alive
             }
-            
+
             || {}
         });
     }
@@ -84,8 +87,11 @@ pub fn month_view(props: &MonthViewProps) -> Html {
     let get_event_color = |event: &VEvent| -> String {
         if let Some(user_info) = &props.user_info {
             if let Some(calendar_path) = &event.calendar_path {
-                if let Some(calendar) = user_info.calendars.iter()
-                    .find(|cal| &cal.path == calendar_path) {
+                if let Some(calendar) = user_info
+                    .calendars
+                    .iter()
+                    .find(|cal| &cal.path == calendar_path)
+                {
                     return calendar.color.clone();
                 }
             }
@@ -103,7 +109,7 @@ pub fn month_view(props: &MonthViewProps) -> Html {
             <div class="weekday-header">{"Thu"}</div>
             <div class="weekday-header">{"Fri"}</div>
             <div class="weekday-header">{"Sat"}</div>
-            
+
             // Days from previous month (grayed out)
             {
                 days_from_prev_month.iter().map(|day| {
@@ -112,7 +118,7 @@ pub fn month_view(props: &MonthViewProps) -> Html {
                     }
                 }).collect::<Html>()
             }
-            
+
             // Days of the current month
             {
                 (1..=days_in_month).map(|day| {
@@ -120,16 +126,16 @@ pub fn month_view(props: &MonthViewProps) -> Html {
                     let is_today = date == props.today;
                     let is_selected = props.selected_date == Some(date);
                     let day_events = props.events.get(&date).cloned().unwrap_or_default();
-                    
+
                     // Calculate visible events and overflow
                     let max_events = *max_events_per_day as usize;
                     let visible_events: Vec<_> = day_events.iter().take(max_events).collect();
                     let hidden_count = day_events.len().saturating_sub(max_events);
-                    
+
                     html! {
-                        <div 
+                        <div
                             class={classes!(
-                                "calendar-day", 
+                                "calendar-day",
                                 if is_today { Some("today") } else { None },
                                 if is_selected { Some("selected") } else { None }
                             )}
@@ -162,7 +168,7 @@ pub fn month_view(props: &MonthViewProps) -> Html {
                                     visible_events.iter().map(|event| {
                                         let event_color = get_event_color(event);
                                         let is_refreshing = props.refreshing_event_uid.as_ref() == Some(&event.uid);
-                                        
+
                                         let onclick = {
                                             let on_event_click = props.on_event_click.clone();
                                             let event = (*event).clone();
@@ -170,7 +176,7 @@ pub fn month_view(props: &MonthViewProps) -> Html {
                                                 on_event_click.emit(event.clone());
                                             })
                                         };
-                                        
+
                                         let oncontextmenu = {
                                             if let Some(callback) = &props.on_event_context_menu {
                                                 let callback = callback.clone();
@@ -183,9 +189,9 @@ pub fn month_view(props: &MonthViewProps) -> Html {
                                                 None
                                             }
                                         };
-                                        
+
                                         html! {
-                                            <div 
+                                            <div
                                                 class={classes!("event-box", if is_refreshing { Some("refreshing") } else { None })}
                                                 style={format!("background-color: {}", event_color)}
                                                 {onclick}
@@ -212,7 +218,7 @@ pub fn month_view(props: &MonthViewProps) -> Html {
                     }
                 }).collect::<Html>()
             }
-            
+
             { render_next_month_days(days_from_prev_month.len(), days_in_month) }
         </div>
     }
@@ -221,20 +227,34 @@ pub fn month_view(props: &MonthViewProps) -> Html {
 fn render_next_month_days(prev_days_count: usize, current_days_count: u32) -> Html {
     let total_slots = 42; // 6 rows x 7 days
     let used_slots = prev_days_count + current_days_count as usize;
-    let remaining_slots = if used_slots < total_slots { total_slots - used_slots } else { 0 };
-    
-    (1..=remaining_slots).map(|day| {
-        html! {
-            <div class="calendar-day next-month">{day}</div>
-        }
-    }).collect::<Html>()
+    let remaining_slots = if used_slots < total_slots {
+        total_slots - used_slots
+    } else {
+        0
+    };
+
+    (1..=remaining_slots)
+        .map(|day| {
+            html! {
+                <div class="calendar-day next-month">{day}</div>
+            }
+        })
+        .collect::<Html>()
 }
 
 fn get_days_in_month(date: NaiveDate) -> u32 {
     NaiveDate::from_ymd_opt(
-        if date.month() == 12 { date.year() + 1 } else { date.year() },
-        if date.month() == 12 { 1 } else { date.month() + 1 },
-        1
+        if date.month() == 12 {
+            date.year() + 1
+        } else {
+            date.year()
+        },
+        if date.month() == 12 {
+            1
+        } else {
+            date.month() + 1
+        },
+        1,
     )
     .unwrap()
     .pred_opt()
@@ -252,7 +272,7 @@ fn get_days_from_previous_month(current_month: NaiveDate, first_weekday: Weekday
         Weekday::Fri => 5,
         Weekday::Sat => 6,
     };
-    
+
     if days_before == 0 {
         vec![]
     } else {
@@ -261,8 +281,8 @@ fn get_days_from_previous_month(current_month: NaiveDate, first_weekday: Weekday
         } else {
             NaiveDate::from_ymd_opt(current_month.year(), current_month.month() - 1, 1).unwrap()
         };
-        
+
         let prev_month_days = get_days_in_month(prev_month);
         ((prev_month_days - days_before as u32 + 1)..=prev_month_days).collect()
     }
-}
+}

frontend/src/components/recurring_edit_modal.rs

@@ -1,6 +1,6 @@
-use yew::prelude::*;
-use chrono::NaiveDateTime;
 use crate::models::ical::VEvent;
+use chrono::NaiveDateTime;
+use yew::prelude::*;
 
 #[derive(Clone, PartialEq)]
 pub enum RecurringEditAction {
@@ -25,29 +25,34 @@ pub fn recurring_edit_modal(props: &RecurringEditModalProps) -> Html {
         return html! {};
     }
 
-    let event_title = props.event.summary.as_ref().map(|s| s.as_str()).unwrap_or("Untitled Event");
-    
+    let event_title = props
+        .event
+        .summary
+        .as_ref()
+        .map(|s| s.as_str())
+        .unwrap_or("Untitled Event");
+
     let on_this_event = {
         let on_choice = props.on_choice.clone();
         Callback::from(move |_| {
             on_choice.emit(RecurringEditAction::ThisEvent);
         })
     };
-    
+
     let on_future_events = {
         let on_choice = props.on_choice.clone();
         Callback::from(move |_| {
             on_choice.emit(RecurringEditAction::FutureEvents);
         })
     };
-    
+
     let on_all_events = {
         let on_choice = props.on_choice.clone();
         Callback::from(move |_| {
             on_choice.emit(RecurringEditAction::AllEvents);
         })
     };
-    
+
     let on_cancel = {
         let on_cancel = props.on_cancel.clone();
         Callback::from(move |_| {
@@ -64,18 +69,18 @@ pub fn recurring_edit_modal(props: &RecurringEditModalProps) -> Html {
                 <div class="modal-body">
                     <p>{format!("You're modifying \"{}\" which is part of a recurring series.", event_title)}</p>
                     <p>{"How would you like to apply this change?"}</p>
-                    
+
                     <div class="recurring-edit-options">
                         <button class="btn btn-primary recurring-option" onclick={on_this_event}>
                             <div class="option-title">{"This event only"}</div>
                             <div class="option-description">{"Change only this occurrence"}</div>
                         </button>
-                        
+
                         <button class="btn btn-primary recurring-option" onclick={on_future_events}>
                             <div class="option-title">{"This and future events"}</div>
                             <div class="option-description">{"Change this occurrence and all future occurrences"}</div>
                         </button>
-                        
+
                         <button class="btn btn-primary recurring-option" onclick={on_all_events}>
                             <div class="option-title">{"All events in series"}</div>
                             <div class="option-description">{"Change all occurrences in the series"}</div>
@@ -90,4 +95,4 @@ pub fn recurring_edit_modal(props: &RecurringEditModalProps) -> Html {
             </div>
         </div>
     }
-}
+}

frontend/src/components/route_handler.rs

@@ -1,8 +1,8 @@
+use crate::components::{Login, ViewMode};
+use crate::models::ical::VEvent;
+use crate::services::calendar_service::UserInfo;
 use yew::prelude::*;
 use yew_router::prelude::*;
-use crate::components::{Login, ViewMode};
-use crate::services::calendar_service::UserInfo;
-use crate::models::ical::VEvent;
 
 #[derive(Clone, Routable, PartialEq)]
 pub enum Route {
@@ -28,7 +28,17 @@ pub struct RouteHandlerProps {
     #[prop_or_default]
     pub on_create_event_request: Option<Callback<crate::components::EventCreationData>>,
     #[prop_or_default]
-    pub on_event_update_request: Option<Callback<(VEvent, chrono::NaiveDateTime, chrono::NaiveDateTime, bool, Option<chrono::DateTime<chrono::Utc>>, Option<String>, Option<String>)>>,
+    pub on_event_update_request: Option<
+        Callback<(
+            VEvent,
+            chrono::NaiveDateTime,
+            chrono::NaiveDateTime,
+            bool,
+            Option<chrono::DateTime<chrono::Utc>>,
+            Option<String>,
+            Option<String>,
+        )>,
+    >,
     #[prop_or_default]
     pub context_menus_open: bool,
 }
@@ -44,7 +54,7 @@ pub fn route_handler(props: &RouteHandlerProps) -> Html {
     let on_create_event_request = props.on_create_event_request.clone();
     let on_event_update_request = props.on_event_update_request.clone();
     let context_menus_open = props.context_menus_open;
-    
+
     html! {
         <Switch<Route> render={move |route| {
             let auth_token = auth_token.clone();
@@ -56,7 +66,7 @@ pub fn route_handler(props: &RouteHandlerProps) -> Html {
             let on_create_event_request = on_create_event_request.clone();
             let on_event_update_request = on_event_update_request.clone();
             let context_menus_open = context_menus_open;
-            
+
             match route {
                 Route::Home => {
                     if auth_token.is_some() {
@@ -74,16 +84,16 @@ pub fn route_handler(props: &RouteHandlerProps) -> Html {
                 }
                 Route::Calendar => {
                     if auth_token.is_some() {
-                        html! { 
-                            <CalendarView 
-                                user_info={user_info} 
+                        html! {
+                            <CalendarView
+                                user_info={user_info}
                                 on_event_context_menu={on_event_context_menu}
                                 on_calendar_context_menu={on_calendar_context_menu}
                                 view={view}
                                 on_create_event_request={on_create_event_request}
                                 on_event_update_request={on_event_update_request}
                                 context_menus_open={context_menus_open}
-                            /> 
+                            />
                         }
                     } else {
                         html! { <Redirect<Route> to={Route::Login}/> }
@@ -106,192 +116,36 @@ pub struct CalendarViewProps {
     #[prop_or_default]
     pub on_create_event_request: Option<Callback<crate::components::EventCreationData>>,
     #[prop_or_default]
-    pub on_event_update_request: Option<Callback<(VEvent, chrono::NaiveDateTime, chrono::NaiveDateTime, bool, Option<chrono::DateTime<chrono::Utc>>, Option<String>, Option<String>)>>,
+    pub on_event_update_request: Option<
+        Callback<(
+            VEvent,
+            chrono::NaiveDateTime,
+            chrono::NaiveDateTime,
+            bool,
+            Option<chrono::DateTime<chrono::Utc>>,
+            Option<String>,
+            Option<String>,
+        )>,
+    >,
     #[prop_or_default]
     pub context_menus_open: bool,
 }
 
-use gloo_storage::{LocalStorage, Storage};
-use crate::services::CalendarService;
 use crate::components::Calendar;
-use std::collections::HashMap;
-use chrono::{Local, NaiveDate, Datelike};
 
 #[function_component(CalendarView)]
 pub fn calendar_view(props: &CalendarViewProps) -> Html {
-    let events = use_state(|| HashMap::<NaiveDate, Vec<VEvent>>::new());
-    let loading = use_state(|| true);
-    let error = use_state(|| None::<String>);
-    let refreshing_event = use_state(|| None::<String>);
-    
-    let auth_token: Option<String> = LocalStorage::get("auth_token").ok();
-    
-    
-    let today = Local::now().date_naive();
-    let current_year = today.year();
-    let current_month = today.month();
-    
-    let on_event_click = {
-        let events = events.clone();
-        let refreshing_event = refreshing_event.clone();
-        let auth_token = auth_token.clone();
-        
-        Callback::from(move |event: VEvent| {
-            if let Some(token) = auth_token.clone() {
-                let events = events.clone();
-                let refreshing_event = refreshing_event.clone();
-                let uid = event.uid.clone();
-                
-                refreshing_event.set(Some(uid.clone()));
-                
-                wasm_bindgen_futures::spawn_local(async move {
-                    let calendar_service = CalendarService::new();
-                    
-                    let password = if let Ok(credentials_str) = LocalStorage::get::<String>("caldav_credentials") {
-                        if let Ok(credentials) = serde_json::from_str::<serde_json::Value>(&credentials_str) {
-                            credentials["password"].as_str().unwrap_or("").to_string()
-                        } else {
-                            String::new()
-                        }
-                    } else {
-                        String::new()
-                    };
-                    
-                    match calendar_service.refresh_event(&token, &password, &uid).await {
-                        Ok(Some(refreshed_event)) => {
-                            let refreshed_vevent = refreshed_event; // CalendarEvent is now VEvent
-                            let mut updated_events = (*events).clone();
-                            
-                            for (_, day_events) in updated_events.iter_mut() {
-                                day_events.retain(|e| e.uid != uid);
-                            }
-                            
-                            if refreshed_vevent.rrule.is_some() {
-                                let new_occurrences = CalendarService::expand_recurring_events(vec![refreshed_vevent.clone()]);
-                                
-                                for occurrence in new_occurrences {
-                                    let date = occurrence.get_date();
-                                    updated_events.entry(date)
-                                        .or_insert_with(Vec::new)
-                                        .push(occurrence);
-                                }
-                            } else {
-                                let date = refreshed_vevent.get_date();
-                                updated_events.entry(date)
-                                    .or_insert_with(Vec::new)
-                                    .push(refreshed_vevent);
-                            }
-                            
-                            events.set(updated_events);
-                        }
-                        Ok(None) => {
-                            let mut updated_events = (*events).clone();
-                            for (_, day_events) in updated_events.iter_mut() {
-                                day_events.retain(|e| e.uid != uid);
-                            }
-                            events.set(updated_events);
-                        }
-                        Err(_err) => {
-                        }
-                    }
-                    
-                    refreshing_event.set(None);
-                });
-            }
-        })
-    };
-    
-    {
-        let events = events.clone();
-        let loading = loading.clone();
-        let error = error.clone();
-        let auth_token = auth_token.clone();
-        
-        use_effect_with((), move |_| {
-            if let Some(token) = auth_token {
-                let events = events.clone();
-                let loading = loading.clone();
-                let error = error.clone();
-                
-                wasm_bindgen_futures::spawn_local(async move {
-                    let calendar_service = CalendarService::new();
-                    
-                    let password = if let Ok(credentials_str) = LocalStorage::get::<String>("caldav_credentials") {
-                        if let Ok(credentials) = serde_json::from_str::<serde_json::Value>(&credentials_str) {
-                            credentials["password"].as_str().unwrap_or("").to_string()
-                        } else {
-                            String::new()
-                        }
-                    } else {
-                        String::new()
-                    };
-                    
-                    match calendar_service.fetch_events_for_month_vevent(&token, &password, current_year, current_month).await {
-                        Ok(vevents) => {
-                            let grouped_events = CalendarService::group_events_by_date(vevents);
-                            events.set(grouped_events);
-                            loading.set(false);
-                        }
-                        Err(err) => {
-                            error.set(Some(format!("Failed to load events: {}", err)));
-                            loading.set(false);
-                        }
-                    }
-                });
-            } else {
-                loading.set(false);
-                error.set(Some("No authentication token found".to_string()));
-            }
-            
-            || ()
-        });
-    }
-    
     html! {
         <div class="calendar-view">
-            {
-                if *loading {
-                    html! {
-                        <div class="calendar-loading">
-                            <p>{"Loading calendar events..."}</p>
-                        </div>
-                    }
-                } else if let Some(err) = (*error).clone() {
-                    let dummy_callback = Callback::from(|_: VEvent| {});
-                    html! {
-                        <div class="calendar-error">
-                            <p>{format!("Error: {}", err)}</p>
-                            <Calendar 
-                                events={HashMap::new()} 
-                                on_event_click={dummy_callback} 
-                                refreshing_event_uid={(*refreshing_event).clone()} 
-                                user_info={props.user_info.clone()}
-                                on_event_context_menu={props.on_event_context_menu.clone()}
-                                on_calendar_context_menu={props.on_calendar_context_menu.clone()}
-                                view={props.view.clone()}
-                                on_create_event_request={props.on_create_event_request.clone()}
-                                on_event_update_request={props.on_event_update_request.clone()}
-                                context_menus_open={props.context_menus_open}
-                            />
-                        </div>
-                    }
-                } else {
-                    html! {
-                        <Calendar 
-                            events={(*events).clone()} 
-                            on_event_click={on_event_click} 
-                            refreshing_event_uid={(*refreshing_event).clone()} 
-                            user_info={props.user_info.clone()}
-                            on_event_context_menu={props.on_event_context_menu.clone()}
-                            on_calendar_context_menu={props.on_calendar_context_menu.clone()}
-                            view={props.view.clone()}
-                            on_create_event_request={props.on_create_event_request.clone()}
-                            on_event_update_request={props.on_event_update_request.clone()}
-                            context_menus_open={props.context_menus_open}
-                        />
-                    }
-                }
-            }
+            <Calendar
+                user_info={props.user_info.clone()}
+                on_event_context_menu={props.on_event_context_menu.clone()}
+                on_calendar_context_menu={props.on_calendar_context_menu.clone()}
+                view={props.view.clone()}
+                on_create_event_request={props.on_create_event_request.clone()}
+                on_event_update_request={props.on_event_update_request.clone()}
+                context_menus_open={props.context_menus_open}
+            />
         </div>
     }
-}
+}

frontend/src/components/sidebar.rs

@@ -1,8 +1,8 @@
+use crate::components::CalendarListItem;
+use crate::services::calendar_service::UserInfo;
+use web_sys::HtmlSelectElement;
 use yew::prelude::*;
 use yew_router::prelude::*;
-use web_sys::HtmlSelectElement;
-use crate::services::calendar_service::UserInfo;
-use crate::components::CalendarListItem;
 
 #[derive(Clone, Routable, PartialEq)]
 pub enum Route {
@@ -33,12 +33,11 @@ pub enum Theme {
 }
 
 impl Theme {
-    
     pub fn value(&self) -> &'static str {
         match self {
             Theme::Default => "default",
             Theme::Ocean => "ocean",
-            Theme::Forest => "forest", 
+            Theme::Forest => "forest",
             Theme::Sunset => "sunset",
             Theme::Purple => "purple",
             Theme::Dark => "dark",
@@ -46,7 +45,7 @@ impl Theme {
             Theme::Mint => "mint",
         }
     }
-    
+
     pub fn from_value(value: &str) -> Self {
         match value {
             "ocean" => Theme::Ocean,
@@ -167,14 +166,14 @@ pub fn sidebar(props: &SidebarProps) -> Html {
                 <button onclick={props.on_create_calendar.reform(|_| ())} class="create-calendar-button">
                     {"+ Create Calendar"}
                 </button>
-                
+
                 <div class="view-selector">
                     <select class="view-selector-dropdown" onchange={on_view_change}>
                         <option value="month" selected={matches!(props.current_view, ViewMode::Month)}>{"Month"}</option>
                         <option value="week" selected={matches!(props.current_view, ViewMode::Week)}>{"Week"}</option>
                     </select>
                 </div>
-                
+
                 <div class="theme-selector">
                     <select class="theme-selector-dropdown" onchange={on_theme_change}>
                         <option value="default" selected={matches!(props.current_theme, Theme::Default)}>{"Default"}</option>
@@ -187,9 +186,9 @@ pub fn sidebar(props: &SidebarProps) -> Html {
                         <option value="mint" selected={matches!(props.current_theme, Theme::Mint)}>{"Mint"}</option>
                     </select>
                 </div>
-                
+
                 <button onclick={props.on_logout.reform(|_| ())} class="logout-button">{"Logout"}</button>
             </div>
         </aside>
     }
-}
+}

frontend/src/components/week_view.rs

@@ -1,10 +1,10 @@
-use yew::prelude::*;
-use chrono::{Datelike, NaiveDate, Duration, Weekday, Local, Timelike, NaiveDateTime, NaiveTime};
+use crate::components::{EventCreationData, RecurringEditAction, RecurringEditModal};
+use crate::models::ical::VEvent;
+use crate::services::calendar_service::UserInfo;
+use chrono::{Datelike, Duration, Local, NaiveDate, NaiveDateTime, NaiveTime, Timelike, Weekday};
 use std::collections::HashMap;
 use web_sys::MouseEvent;
-use crate::services::calendar_service::UserInfo;
-use crate::models::ical::VEvent;
-use crate::components::{RecurringEditModal, RecurringEditAction, EventCreationData};
+use yew::prelude::*;
 
 #[derive(Properties, PartialEq)]
 pub struct WeekViewProps {
@@ -25,7 +25,17 @@ pub struct WeekViewProps {
     #[prop_or_default]
     pub on_create_event_request: Option<Callback<EventCreationData>>,
     #[prop_or_default]
-    pub on_event_update: Option<Callback<(VEvent, NaiveDateTime, NaiveDateTime, bool, Option<chrono::DateTime<chrono::Utc>>, Option<String>, Option<String>)>>,
+    pub on_event_update: Option<
+        Callback<(
+            VEvent,
+            NaiveDateTime,
+            NaiveDateTime,
+            bool,
+            Option<chrono::DateTime<chrono::Utc>>,
+            Option<String>,
+            Option<String>,
+        )>,
+    >,
     #[prop_or_default]
     pub context_menus_open: bool,
     #[prop_or_default]
@@ -47,20 +57,18 @@ struct DragState {
     start_date: NaiveDate,
     start_y: f64,
     current_y: f64,
-    offset_y: f64, // For event moves, this is the offset from the event's top
+    offset_y: f64,   // For event moves, this is the offset from the event's top
     has_moved: bool, // Track if we've moved enough to constitute a real drag
 }
 
 #[function_component(WeekView)]
 pub fn week_view(props: &WeekViewProps) -> Html {
     let start_of_week = get_start_of_week(props.current_date);
-    let week_days: Vec<NaiveDate> = (0..7)
-        .map(|i| start_of_week + Duration::days(i))
-        .collect();
+    let week_days: Vec<NaiveDate> = (0..7).map(|i| start_of_week + Duration::days(i)).collect();
 
     // Drag state for event creation
     let drag_state = use_state(|| None::<DragState>);
-    
+
     // State for recurring event edit modal
     #[derive(Clone, PartialEq)]
     struct PendingRecurringEdit {
@@ -68,15 +76,18 @@ pub fn week_view(props: &WeekViewProps) -> Html {
         new_start: NaiveDateTime,
         new_end: NaiveDateTime,
     }
-    
+
     let pending_recurring_edit = use_state(|| None::<PendingRecurringEdit>);
 
     // Helper function to get calendar color for an event
     let get_event_color = |event: &VEvent| -> String {
         if let Some(user_info) = &props.user_info {
             if let Some(calendar_path) = &event.calendar_path {
-                if let Some(calendar) = user_info.calendars.iter()
-                    .find(|cal| &cal.path == calendar_path) {
+                if let Some(calendar) = user_info
+                    .calendars
+                    .iter()
+                    .find(|cal| &cal.path == calendar_path)
+                {
                     return calendar.color.clone();
                 }
             }
@@ -85,21 +96,22 @@ pub fn week_view(props: &WeekViewProps) -> Html {
     };
 
     // Generate time labels - 24 hours plus the final midnight boundary
-    let mut time_labels: Vec<String> = (0..24).map(|hour| {
-        if hour == 0 {
-            "12 AM".to_string()
-        } else if hour < 12 {
-            format!("{} AM", hour)
-        } else if hour == 12 {
-            "12 PM".to_string()
-        } else {
-            format!("{} PM", hour - 12)
-        }
-    }).collect();
-    
+    let mut time_labels: Vec<String> = (0..24)
+        .map(|hour| {
+            if hour == 0 {
+                "12 AM".to_string()
+            } else if hour < 12 {
+                format!("{} AM", hour)
+            } else if hour == 12 {
+                "12 PM".to_string()
+            } else {
+                format!("{} PM", hour - 12)
+            }
+        })
+        .collect();
+
     // Add the final midnight boundary to show where the day ends
     time_labels.push("12 AM".to_string());
-    
 
     // Handlers for recurring event modification modal
     let on_recurring_choice = {
@@ -135,35 +147,35 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                         if let Some(update_callback) = &on_event_update {
                             // Extract occurrence date for backend processing
                             let occurrence_date = edit.event.dtstart.format("%Y-%m-%d").to_string();
-                            
+
                             // Send single request to backend with "this_only" scope
                             // Backend will atomically:
                             // 1. Add EXDATE to original series (excludes this occurrence)
                             // 2. Create exception event with RECURRENCE-ID and user's modifications
                             update_callback.emit((
-                                edit.event.clone(),     // Original event (series to modify)
-                                edit.new_start,         // Dragged start time for exception
-                                edit.new_end,           // Dragged end time for exception
-                                true,                   // preserve_rrule = true
-                                None,                   // No until_date for this_only
+                                edit.event.clone(),            // Original event (series to modify)
+                                edit.new_start,                // Dragged start time for exception
+                                edit.new_end,                  // Dragged end time for exception
+                                true,                          // preserve_rrule = true
+                                None,                          // No until_date for this_only
                                 Some("this_only".to_string()), // Update scope
-                                Some(occurrence_date)   // Date of occurrence being modified
+                                Some(occurrence_date),         // Date of occurrence being modified
                             ));
                         }
-                    },
+                    }
                     RecurringEditAction::FutureEvents => {
                         // RFC 5545 Compliant Series Splitting: "This and Future Events"
-                        // 
+                        //
                         // When a user chooses to modify "this and future events" for a recurring series,
                         // we implement a series split operation that:
-                        // 
-                        // 1. **Terminates Original Series**: The existing series is updated with an UNTIL 
+                        //
+                        // 1. **Terminates Original Series**: The existing series is updated with an UNTIL
                         //    clause to stop before the occurrence being modified
-                        // 2. **Creates New Series**: A new recurring series is created starting from the 
+                        // 2. **Creates New Series**: A new recurring series is created starting from the
                         //    occurrence date with the user's modifications (new time, title, etc.)
                         //
                         // Example: User drags Aug 22 occurrence of "Daily 9AM meeting" to 2PM:
-                        // - Original: "Daily 9AM meeting" → ends Aug 21 (UNTIL=Aug22T000000Z) 
+                        // - Original: "Daily 9AM meeting" → ends Aug 21 (UNTIL=Aug22T000000Z)
                         // - New: "Daily 2PM meeting" → starts Aug 22, continues indefinitely
                         //
                         // This approach ensures:
@@ -177,7 +189,8 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                         if let Some(update_callback) = &on_event_update {
                             // Find the original series event (not the occurrence)
                             // UIDs like "uuid-timestamp" need to split on the last hyphen, not the first
-                            let base_uid = if let Some(last_hyphen_pos) = edit.event.uid.rfind('-') {
+                            let base_uid = if let Some(last_hyphen_pos) = edit.event.uid.rfind('-')
+                            {
                                 let suffix = &edit.event.uid[last_hyphen_pos + 1..];
                                 // Check if suffix is numeric (timestamp), if so remove it
                                 if suffix.chars().all(|c| c.is_numeric()) {
@@ -188,9 +201,15 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                             } else {
                                 edit.event.uid.clone()
                             };
-                            
-                            web_sys::console::log_1(&format!("🔍 Looking for original series: '{}' from occurrence: '{}'", base_uid, edit.event.uid).into());
-                            
+
+                            web_sys::console::log_1(
+                                &format!(
+                                    "🔍 Looking for original series: '{}' from occurrence: '{}'",
+                                    base_uid, edit.event.uid
+                                )
+                                .into(),
+                            );
+
                             // Find the original series event by searching for the base UID
                             let mut original_series = None;
                             for events_list in events.values() {
@@ -204,12 +223,15 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                     break;
                                 }
                             }
-                            
+
                             let original_series = match original_series {
                                 Some(series) => {
-                                    web_sys::console::log_1(&format!("✅ Found original series: '{}'", series.uid).into());
+                                    web_sys::console::log_1(
+                                        &format!("✅ Found original series: '{}'", series.uid)
+                                            .into(),
+                                    );
                                     series
-                                },
+                                }
                                 None => {
                                     web_sys::console::log_1(&format!("⚠️  Could not find original series '{}', using occurrence but fixing UID", base_uid).into());
                                     let mut fallback_event = edit.event.clone();
@@ -218,55 +240,69 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                     fallback_event
                                 }
                             };
-                            
+
                             // Calculate the day before this occurrence for UNTIL clause
-                            let until_date = edit.event.dtstart.date_naive() - chrono::Duration::days(1);
-                            let until_datetime = until_date.and_time(chrono::NaiveTime::from_hms_opt(23, 59, 59).unwrap());
-                            let until_utc = chrono::DateTime::<chrono::Utc>::from_naive_utc_and_offset(until_datetime, chrono::Utc);
-                            
+                            let until_date =
+                                edit.event.dtstart.date_naive() - chrono::Duration::days(1);
+                            let until_datetime = until_date
+                                .and_time(chrono::NaiveTime::from_hms_opt(23, 59, 59).unwrap());
+                            let until_utc =
+                                chrono::DateTime::<chrono::Utc>::from_naive_utc_and_offset(
+                                    until_datetime,
+                                    chrono::Utc,
+                                );
+
                             web_sys::console::log_1(&format!("🔄 Will set UNTIL {} for original series to end before occurrence {}", 
                                 until_utc.format("%Y-%m-%d %H:%M:%S UTC"),
                                 edit.event.dtstart.format("%Y-%m-%d %H:%M:%S UTC")).into());
-                            
+
                             // Critical: Use the dragged times (new_start/new_end) not the original series times
                             // This ensures the new series reflects the user's drag operation
-                            let new_start = edit.new_start; // The dragged start time  
+                            let new_start = edit.new_start; // The dragged start time
                             let new_end = edit.new_end; // The dragged end time
-                            
+
                             // Extract occurrence date from the dragged event for backend processing
                             // Format: YYYY-MM-DD (e.g., "2025-08-22")
                             // This tells the backend which specific occurrence is being modified
                             let occurrence_date = edit.event.dtstart.format("%Y-%m-%d").to_string();
-                            
+
                             // Send single request to backend with "this_and_future" scope
                             // Backend will atomically:
                             // 1. Add UNTIL clause to original series (stops before occurrence_date)
                             // 2. Create new series starting from occurrence_date with dragged times
                             update_callback.emit((
-                                original_series,    // Original event to terminate
-                                new_start,          // Dragged start time for new series
-                                new_end,            // Dragged end time for new series  
-                                true,               // preserve_rrule = true
-                                Some(until_utc),    // UNTIL date for original series
+                                original_series,                     // Original event to terminate
+                                new_start,       // Dragged start time for new series
+                                new_end,         // Dragged end time for new series
+                                true,            // preserve_rrule = true
+                                Some(until_utc), // UNTIL date for original series
                                 Some("this_and_future".to_string()), // Update scope
-                                Some(occurrence_date) // Date of occurrence being modified
+                                Some(occurrence_date), // Date of occurrence being modified
                             ));
                         }
-                    },
+                    }
                     RecurringEditAction::AllEvents => {
                         // Modify the entire series
                         let series_event = edit.event.clone();
-                        
+
                         if let Some(callback) = &on_event_update {
-                            callback.emit((series_event, edit.new_start, edit.new_end, true, None, Some("all_in_series".to_string()), None)); // Regular drag operation - preserve RRULE, update_scope = all_in_series
+                            callback.emit((
+                                series_event,
+                                edit.new_start,
+                                edit.new_end,
+                                true,
+                                None,
+                                Some("all_in_series".to_string()),
+                                None,
+                            )); // Regular drag operation - preserve RRULE, update_scope = all_in_series
                         }
-                    },
+                    }
                 }
             }
             pending_recurring_edit.set(None);
         })
     };
-    
+
     let on_recurring_cancel = {
         let pending_recurring_edit = pending_recurring_edit.clone();
         Callback::from(move |_| {
@@ -283,7 +319,7 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                     week_days.iter().map(|date| {
                         let is_today = *date == props.today;
                         let weekday_name = get_weekday_name(date.weekday());
-                        
+
                         html! {
                             <div class={classes!("week-day-header", if is_today { Some("today") } else { None })}>
                                 <div class="weekday-name">{weekday_name}</div>
@@ -293,7 +329,7 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                     }).collect::<Html>()
                 }
             </div>
-            
+
             // Scrollable content area with time grid
             <div class="week-content">
                 <div class="time-grid">
@@ -310,18 +346,18 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                             }).collect::<Html>()
                         }
                     </div>
-                    
+
                     // Day columns
                     <div class="week-days-grid">
                         {
                             week_days.iter().enumerate().map(|(_column_index, date)| {
                                 let is_today = *date == props.today;
                                 let day_events = props.events.get(date).cloned().unwrap_or_default();
-                                
+
                                 // Drag event handlers
                                 let drag_state_clone = drag_state.clone();
                                 let date_for_drag = *date;
-                                
+
                                 let onmousedown = {
                                     let drag_state = drag_state_clone.clone();
                                     let context_menus_open = props.context_menus_open;
@@ -331,20 +367,20 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                         if context_menus_open {
                                             return;
                                         }
-                                        
+
                                         // Only handle left-click (button 0)
                                         if e.button() != 0 {
                                             return;
                                         }
-                                        
+
                                         // Calculate Y position relative to day column container
                                         // Use layer_y which gives coordinates relative to positioned ancestor
                                         let relative_y = e.layer_y() as f64;
                                         let relative_y = if relative_y > 0.0 { relative_y } else { e.offset_y() as f64 };
-                                        
+
                                         // Snap to increment
                                         let snapped_y = snap_to_increment(relative_y, time_increment);
-                                        
+
                                         drag_state.set(Some(DragState {
                                             is_dragging: true,
                                             drag_type: DragType::CreateEvent,
@@ -357,7 +393,7 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                         e.prevent_default();
                                     })
                                 };
-                                
+
                                 let onmousemove = {
                                     let drag_state = drag_state_clone.clone();
                                     let time_increment = props.time_increment;
@@ -367,27 +403,27 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                                 // Use layer_y for consistent coordinate calculation
                                                 let mouse_y = e.layer_y() as f64;
                                                 let mouse_y = if mouse_y > 0.0 { mouse_y } else { e.offset_y() as f64 };
-                                                
+
                                                 // For move operations, we now follow the mouse directly since we start at click position
                                                 // For resize operations, we still use the mouse position directly
                                                 let adjusted_y = mouse_y;
-                                                
+
                                                 // Snap to increment
                                                 let snapped_y = snap_to_increment(adjusted_y, time_increment);
-                                                
+
                                                 // Check if we've moved enough to constitute a real drag (5 pixels minimum)
                                                 let movement_distance = (snapped_y - current_drag.start_y).abs();
                                                 if movement_distance > 5.0 {
                                                     current_drag.has_moved = true;
                                                 }
-                                                
+
                                                 current_drag.current_y = snapped_y;
                                                 drag_state.set(Some(current_drag));
                                             }
                                         }
                                     })
                                 };
-                                
+
                                 let onmouseup = {
                                     let drag_state = drag_state_clone.clone();
                                     let on_create_event = props.on_create_event.clone();
@@ -402,24 +438,24 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                                         // Calculate start and end times
                                                         let start_time = pixels_to_time(current_drag.start_y);
                                                         let end_time = pixels_to_time(current_drag.current_y);
-                                                        
+
                                                         // Ensure start is before end
                                                         let (actual_start, actual_end) = if start_time <= end_time {
                                                             (start_time, end_time)
                                                         } else {
                                                             (end_time, start_time)
                                                         };
-                                                        
+
                                                         // Ensure minimum duration (15 minutes)
                                                         let actual_end = if actual_end.signed_duration_since(actual_start).num_minutes() < 15 {
                                                             actual_start + chrono::Duration::minutes(15)
                                                         } else {
                                                             actual_end
                                                         };
-                                                        
+
                                                         let start_datetime = NaiveDateTime::new(current_drag.start_date, actual_start);
                                                         let end_datetime = NaiveDateTime::new(current_drag.start_date, actual_end);
-                                                        
+
                                                         if let Some(callback) = &on_create_event {
                                                             callback.emit((current_drag.start_date, start_datetime, end_datetime));
                                                         }
@@ -430,17 +466,17 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                                         // Snap the final position to maintain time increment alignment
                                                         let event_top_position = snap_to_increment(unsnapped_position, time_increment);
                                                         let new_start_time = pixels_to_time(event_top_position);
-                                                        
+
                                                         // Calculate duration from original event
                                                         let original_duration = if let Some(end) = event.dtend {
                                                             end.signed_duration_since(event.dtstart)
                                                         } else {
                                                             chrono::Duration::hours(1) // Default 1 hour
                                                         };
-                                                        
+
                                                         let new_start_datetime = NaiveDateTime::new(current_drag.start_date, new_start_time);
                                                         let new_end_datetime = new_start_datetime + original_duration;
-                                                        
+
                                                         // Check if this is a recurring event
                                                         if event.rrule.is_some() {
                                                             // Show modal for recurring event modification
@@ -459,7 +495,7 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                                     DragType::ResizeEventStart(event) => {
                                                         // Calculate new start time based on drag position
                                                         let new_start_time = pixels_to_time(current_drag.current_y);
-                                                        
+
                                                         // Keep the original end time
                                                         let original_end = if let Some(end) = event.dtend {
                                                             end.with_timezone(&chrono::Local).naive_local()
@@ -467,16 +503,16 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                                             // If no end time, use start time + 1 hour as default
                                                             event.dtstart.with_timezone(&chrono::Local).naive_local() + chrono::Duration::hours(1)
                                                         };
-                                                        
+
                                                         let new_start_datetime = NaiveDateTime::new(current_drag.start_date, new_start_time);
-                                                        
+
                                                         // Ensure start is before end (minimum 15 minutes)
                                                         let new_end_datetime = if new_start_datetime >= original_end {
                                                             new_start_datetime + chrono::Duration::minutes(15)
                                                         } else {
                                                             original_end
                                                         };
-                                                        
+
                                                         // Check if this is a recurring event
                                                         if event.rrule.is_some() {
                                                             // Show modal for recurring event modification
@@ -495,19 +531,19 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                                     DragType::ResizeEventEnd(event) => {
                                                         // Calculate new end time based on drag position
                                                         let new_end_time = pixels_to_time(current_drag.current_y);
-                                                        
+
                                                         // Keep the original start time
                                                         let original_start = event.dtstart.with_timezone(&chrono::Local).naive_local();
-                                                        
+
                                                         let new_end_datetime = NaiveDateTime::new(current_drag.start_date, new_end_time);
-                                                        
+
                                                         // Ensure end is after start (minimum 15 minutes)
                                                         let new_start_datetime = if new_end_datetime <= original_start {
                                                             new_end_datetime - chrono::Duration::minutes(15)
                                                         } else {
                                                             original_start
                                                         };
-                                                        
+
                                                         // Check if this is a recurring event
                                                         if event.rrule.is_some() {
                                                             // Show modal for recurring event modification
@@ -524,15 +560,15 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                                         }
                                                     }
                                                 }
-                                                
+
                                                 drag_state.set(None);
                                             }
                                         }
                                     })
                                 };
-                                
+
                                 html! {
-                                    <div 
+                                    <div
                                         class={classes!("week-day-column", if is_today { Some("today") } else { None })}
                                         {onmousedown}
                                         {onmousemove}
@@ -554,21 +590,21 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                             <div class="time-slot-half"></div>
                                             <div class="time-slot-half"></div>
                                         </div>
-                                        
+
                                         // Events positioned absolutely based on their actual times
                                         <div class="events-container">
                                             {
                                                 day_events.iter().filter_map(|event| {
                                                     let (start_pixels, duration_pixels, is_all_day) = calculate_event_position(event, *date);
-                                                    
+
                                                     // Skip events that don't belong on this date or have invalid positioning
                                                     if start_pixels == 0.0 && duration_pixels == 0.0 && !is_all_day {
                                                         return None;
                                                     }
-                                                    
+
                                                     let event_color = get_event_color(event);
                                                     let is_refreshing = props.refreshing_event_uid.as_ref() == Some(&event.uid);
-                                                    
+
                                                     let onclick = {
                                                         let on_event_click = props.on_event_click.clone();
                                                         let event = event.clone();
@@ -577,7 +613,7 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                                             on_event_click.emit(event.clone());
                                                         })
                                                     };
-                                                    
+
                                                     let onmousedown_event = {
                                                         let drag_state = drag_state.clone();
                                                         let event_for_drag = event.clone();
@@ -585,27 +621,27 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                                         let _time_increment = props.time_increment;
                                                         Callback::from(move |e: MouseEvent| {
                                                             e.stop_propagation(); // Prevent drag-to-create from starting on event clicks
-                                                            
+
                                                             // Only handle left-click (button 0) for moving
                                                             if e.button() != 0 {
                                                                 return;
                                                             }
-                                                            
+
                                                             // Calculate click position relative to event element
                                                             let click_y_relative = e.layer_y() as f64;
                                                             let click_y_relative = if click_y_relative > 0.0 { click_y_relative } else { e.offset_y() as f64 };
-                                                            
+
                                                             // Get event's current position in day column coordinates
                                                             let (event_start_pixels, _, _) = calculate_event_position(&event_for_drag, date_for_drag);
                                                             let event_start_pixels = event_start_pixels as f64;
-                                                            
+
                                                             // Convert click position to day column coordinates
                                                             let click_y = event_start_pixels + click_y_relative;
-                                                            
+
                                                             // Store the offset from the event's top where the user clicked
                                                             // This will be used to maintain the relative click position
                                                             let offset_y = click_y_relative;
-                                                            
+
                                                             // Start drag tracking from where we clicked (in day column coordinates)
                                                             drag_state.set(Some(DragState {
                                                                 is_dragging: true,
@@ -619,7 +655,7 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                                             e.prevent_default();
                                                         })
                                                     };
-                                                    
+
                                                     let oncontextmenu = {
                                                         if let Some(callback) = &props.on_event_context_menu {
                                                             let callback = callback.clone();
@@ -633,7 +669,7 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                                                         return;
                                                                     }
                                                                 }
-                                                                
+
                                                                 e.prevent_default();
                                                                 e.stop_propagation(); // Prevent calendar context menu from also triggering
                                                                 callback.emit((e, event.clone()));
@@ -642,7 +678,7 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                                             None
                                                         }
                                                     };
-                                                    
+
                                                     // Format time display for the event
                                                     let time_display = if event.all_day {
                                                         "All Day".to_string()
@@ -650,20 +686,20 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                                         let local_start = event.dtstart.with_timezone(&Local);
                                                         if let Some(end) = event.dtend {
                                                             let local_end = end.with_timezone(&Local);
-                                                            
+
                                                             // Check if both times are in same AM/PM period to avoid redundancy
                                                             let start_is_am = local_start.hour() < 12;
                                                             let end_is_am = local_end.hour() < 12;
-                                                            
+
                                                             if start_is_am == end_is_am {
                                                                 // Same AM/PM period - show "9:00 - 10:30 AM"
-                                                                format!("{} - {}", 
+                                                                format!("{} - {}",
                                                                     local_start.format("%I:%M").to_string().trim_start_matches('0'),
                                                                     local_end.format("%I:%M %p")
                                                                 )
                                                             } else {
                                                                 // Different AM/PM periods - show "9:00 AM - 2:30 PM"
-                                                                format!("{} - {}", 
+                                                                format!("{} - {}",
                                                                     local_start.format("%I:%M %p"),
                                                                     local_end.format("%I:%M %p")
                                                                 )
@@ -673,22 +709,22 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                                             format!("{}", local_start.format("%I:%M %p"))
                                                         }
                                                     };
-                                                    
+
                                                     // Check if this event is currently being dragged or resized
                                                     let is_being_dragged = if let Some(drag) = (*drag_state).clone() {
                                                         match &drag.drag_type {
-                                                            DragType::MoveEvent(dragged_event) => 
+                                                            DragType::MoveEvent(dragged_event) =>
                                                                 dragged_event.uid == event.uid && drag.is_dragging,
-                                                            DragType::ResizeEventStart(dragged_event) => 
+                                                            DragType::ResizeEventStart(dragged_event) =>
                                                                 dragged_event.uid == event.uid && drag.is_dragging,
-                                                            DragType::ResizeEventEnd(dragged_event) => 
+                                                            DragType::ResizeEventEnd(dragged_event) =>
                                                                 dragged_event.uid == event.uid && drag.is_dragging,
                                                             _ => false,
                                                         }
                                                     } else {
                                                         false
                                                     };
-                                                    
+
                                                     if is_being_dragged {
                                                         // Hide the original event while being dragged
                                                         Some(html! {})
@@ -701,11 +737,11 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                                             let time_increment = props.time_increment;
                                                             Callback::from(move |e: web_sys::MouseEvent| {
                                                                 e.stop_propagation();
-                                                                
+
                                                                 let relative_y = e.layer_y() as f64;
                                                                 let relative_y = if relative_y > 0.0 { relative_y } else { e.offset_y() as f64 };
                                                                 let snapped_y = snap_to_increment(relative_y, time_increment);
-                                                                
+
                                                                 drag_state.set(Some(DragState {
                                                                     is_dragging: true,
                                                                     drag_type: DragType::ResizeEventStart(event_for_resize.clone()),
@@ -718,7 +754,7 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                                                 e.prevent_default();
                                                             })
                                                         };
-                                                        
+
                                                         let resize_end_handler = {
                                                             let drag_state = drag_state.clone();
                                                             let event_for_resize = event.clone();
@@ -726,11 +762,11 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                                             let time_increment = props.time_increment;
                                                             Callback::from(move |e: web_sys::MouseEvent| {
                                                                 e.stop_propagation();
-                                                                
+
                                                                 let relative_y = e.layer_y() as f64;
                                                                 let relative_y = if relative_y > 0.0 { relative_y } else { e.offset_y() as f64 };
                                                                 let snapped_y = snap_to_increment(relative_y, time_increment);
-                                                                
+
                                                                 drag_state.set(Some(DragState {
                                                                     is_dragging: true,
                                                                     drag_type: DragType::ResizeEventEnd(event_for_resize.clone()),
@@ -743,18 +779,18 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                                                 e.prevent_default();
                                                             })
                                                         };
-                                                        
+
                                                         Some(html! {
-                                                            <div 
+                                                            <div
                                                                 class={classes!(
-                                                                    "week-event", 
+                                                                    "week-event",
                                                                     if is_refreshing { Some("refreshing") } else { None },
                                                                     if is_all_day { Some("all-day") } else { None }
                                                                 )}
                                                                 style={format!(
-                                                                    "background-color: {}; top: {}px; height: {}px;", 
-                                                                    event_color, 
-                                                                    start_pixels, 
+                                                                    "background-color: {}; top: {}px; height: {}px;",
+                                                                    event_color,
+                                                                    start_pixels,
                                                                     duration_pixels
                                                                 )}
                                                                 {onclick}
@@ -764,7 +800,7 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                                                 // Top resize handle
                                                                 {if !is_all_day {
                                                                     html! {
-                                                                        <div 
+                                                                        <div
                                                                             class="resize-handle resize-handle-top"
                                                                             onmousedown={resize_start_handler}
                                                                         />
@@ -772,7 +808,7 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                                                 } else {
                                                                     html! {}
                                                                 }}
-                                                                
+
                                                                 // Event content
                                                                 <div class="event-content">
                                                                     <div class="event-title">{event.summary.as_ref().unwrap_or(&"Untitled".to_string())}</div>
@@ -782,11 +818,11 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                                                         html! {}
                                                                     }}
                                                                 </div>
-                                                                
+
                                                                 // Bottom resize handle
                                                                 {if !is_all_day {
                                                                     html! {
-                                                                        <div 
+                                                                        <div
                                                                             class="resize-handle resize-handle-bottom"
                                                                             onmousedown={resize_end_handler}
                                                                         />
@@ -800,7 +836,7 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                                 }).collect::<Html>()
                                             }
                                         </div>
-                                        
+
                                         // Temporary event box during drag
                                         {
                                             if let Some(drag) = (*drag_state).clone() {
@@ -810,11 +846,11 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                                             let start_y = drag.start_y.min(drag.current_y);
                                                             let end_y = drag.start_y.max(drag.current_y);
                                                             let height = (drag.current_y - drag.start_y).abs().max(20.0);
-                                                            
+
                                                             // Convert pixels to times for display
                                                             let start_time = pixels_to_time(start_y);
                                                             let end_time = pixels_to_time(end_y);
-                                                            
+
                                                             html! {
                                                                 <div
                                                                     class="temp-event-box"
@@ -837,9 +873,9 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                                             };
                                                             let duration_pixels = (original_duration.num_minutes() as f64).max(20.0);
                                                             let new_end_time = new_start_time + original_duration;
-                                                            
+
                                                             let event_color = get_event_color(event);
-                                                            
+
                                                             html! {
                                                                 <div
                                                                     class="temp-event-box moving-event"
@@ -858,17 +894,17 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                                             } else {
                                                                 event.dtstart.with_timezone(&chrono::Local).naive_local() + chrono::Duration::hours(1)
                                                             };
-                                                            
+
                                                             // Calculate positions for the preview
                                                             let (original_start_pixels, _, _) = calculate_event_position(event, drag.start_date);
                                                             let original_duration = original_end.signed_duration_since(event.dtstart.with_timezone(&chrono::Local).naive_local());
                                                             let original_end_pixels = original_start_pixels + (original_duration.num_minutes() as f32);
-                                                            
+
                                                             let new_start_pixels = drag.current_y;
                                                             let new_height = (original_end_pixels as f64 - new_start_pixels).max(20.0);
-                                                            
+
                                                             let event_color = get_event_color(event);
-                                                            
+
                                                             html! {
                                                                 <div
                                                                     class="temp-event-box resizing-event"
@@ -883,15 +919,15 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                                             // Show the event being resized from the end
                                                             let new_end_time = pixels_to_time(drag.current_y);
                                                             let original_start = event.dtstart.with_timezone(&chrono::Local).naive_local();
-                                                            
+
                                                             // Calculate positions for the preview
                                                             let (original_start_pixels, _, _) = calculate_event_position(event, drag.start_date);
-                                                            
+
                                                             let new_end_pixels = drag.current_y;
                                                             let new_height = (new_end_pixels - original_start_pixels as f64).max(20.0);
-                                                            
+
                                                             let event_color = get_event_color(event);
-                                                            
+
                                                             html! {
                                                                 <div
                                                                     class="temp-event-box resizing-event"
@@ -917,10 +953,10 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                     </div>
                 </div>
             </div>
-            
+
             // Recurring event modification modal
             if let Some(edit) = (*pending_recurring_edit).clone() {
-                <RecurringEditModal 
+                <RecurringEditModal
                     show={true}
                     event={edit.event}
                     new_start={edit.new_start}
@@ -975,46 +1011,44 @@ fn pixels_to_time(pixels: f64) -> NaiveTime {
     let total_minutes = pixels; // 1px = 1 minute
     let hours = (total_minutes / 60.0) as u32;
     let minutes = (total_minutes % 60.0) as u32;
-    
+
     // Handle midnight boundary - if we're at exactly 1440 pixels (24:00), return midnight
     if total_minutes >= 1440.0 {
         return NaiveTime::from_hms_opt(0, 0, 0).unwrap();
     }
-    
+
     // Clamp to valid time range for within-day times
     let hours = hours.min(23);
     let minutes = minutes.min(59);
-    
+
     NaiveTime::from_hms_opt(hours, minutes, 0).unwrap_or(NaiveTime::from_hms_opt(0, 0, 0).unwrap())
 }
 
-
 fn calculate_event_position(event: &VEvent, date: NaiveDate) -> (f32, f32, bool) {
     // Convert UTC times to local time for display
     let local_start = event.dtstart.with_timezone(&Local);
     let event_date = local_start.date_naive();
-    
+
     // Only position events that are on this specific date
     if event_date != date {
         return (0.0, 0.0, false); // Event not on this date
     }
-    
+
     // Handle all-day events - they appear at the top
     if event.all_day {
         return (0.0, 30.0, true); // Position at top, 30px height, is_all_day = true
     }
-    
+
     // Calculate start position in pixels from midnight
     let start_hour = local_start.hour() as f32;
     let start_minute = local_start.minute() as f32;
     let start_pixels = (start_hour + start_minute / 60.0) * 60.0; // 60px per hour
-    
-    
+
     // Calculate duration and height
     let duration_pixels = if let Some(end) = event.dtend {
         let local_end = end.with_timezone(&Local);
         let end_date = local_end.date_naive();
-        
+
         // Handle events that span multiple days by capping at midnight
         if end_date > date {
             // Event continues past midnight, cap at 24:00 (1440px)
@@ -1028,6 +1062,6 @@ fn calculate_event_position(event: &VEvent, date: NaiveDate) -> (f32, f32, bool)
     } else {
         60.0 // Default 1 hour if no end time
     };
-    
+
     (start_pixels, duration_pixels, false) // is_all_day = false
-}
+}

frontend/src/config.rs

@@ -1,284 +0,0 @@
-use serde::{Deserialize, Serialize};
-use std::env;
-use base64::prelude::*;
-
-/// Configuration for CalDAV server connection and authentication.
-/// 
-/// This struct holds all the necessary information to connect to a CalDAV server,
-/// including server URL, credentials, and optional collection paths.
-/// 
-/// # Security Note
-/// 
-/// The password field contains sensitive information and should be handled carefully.
-/// This struct implements `Debug` but in production, consider implementing a custom
-/// `Debug` that masks the password field.
-/// 
-/// # Example
-/// 
-/// ```rust
-/// use crate::config::CalDAVConfig;
-/// 
-/// // Load configuration from environment variables
-/// let config = CalDAVConfig::from_env()?;
-/// 
-/// // Use the configuration for HTTP requests
-/// let auth_header = format!("Basic {}", config.get_basic_auth());
-/// ```
-#[derive(Debug, Clone, Serialize, Deserialize)]
-pub struct CalDAVConfig {
-    /// The base URL of the CalDAV server (e.g., "https://caldav.example.com/dav/")
-    pub server_url: String,
-    
-    /// Username for authentication with the CalDAV server
-    pub username: String,
-    
-    /// Password for authentication with the CalDAV server
-    /// 
-    /// **Security Note**: This contains sensitive information
-    pub password: String,
-    
-    /// Optional path to the calendar collection on the server
-    /// 
-    /// If not provided, the client will need to discover available calendars
-    /// through CalDAV PROPFIND requests
-    pub calendar_path: Option<String>,
-    
-    /// Optional path to the tasks/todo collection on the server
-    /// 
-    /// Some CalDAV servers store tasks separately from calendar events
-    pub tasks_path: Option<String>,
-}
-
-impl CalDAVConfig {
-    /// Creates a new CalDAVConfig by loading values from environment variables.
-    /// 
-    /// This method will attempt to load a `.env` file from the current directory
-    /// and then read the following required environment variables:
-    /// 
-    /// - `CALDAV_SERVER_URL`: The CalDAV server base URL
-    /// - `CALDAV_USERNAME`: Username for authentication
-    /// - `CALDAV_PASSWORD`: Password for authentication
-    /// 
-    /// Optional environment variables:
-    /// 
-    /// - `CALDAV_CALENDAR_PATH`: Path to calendar collection
-    /// - `CALDAV_TASKS_PATH`: Path to tasks collection
-    /// 
-    /// # Errors
-    /// 
-    /// Returns `ConfigError::MissingVar` if any required environment variable
-    /// is not set or cannot be read.
-    /// 
-    /// # Example
-    /// 
-    /// ```rust
-    /// use crate::config::CalDAVConfig;
-    /// 
-    /// match CalDAVConfig::from_env() {
-    ///     Ok(config) => {
-    ///         println!("Loaded config for server: {}", config.server_url);
-    ///     }
-    ///     Err(e) => {
-    ///         eprintln!("Failed to load config: {}", e);
-    ///     }
-    /// }
-    /// ```
-    pub fn from_env() -> Result<Self, ConfigError> {
-        // Attempt to load .env file, but don't fail if it doesn't exist
-        dotenvy::dotenv().ok();
-
-        let server_url = env::var("CALDAV_SERVER_URL")
-            .map_err(|_| ConfigError::MissingVar("CALDAV_SERVER_URL".to_string()))?;
-
-        let username = env::var("CALDAV_USERNAME")
-            .map_err(|_| ConfigError::MissingVar("CALDAV_USERNAME".to_string()))?;
-
-        let password = env::var("CALDAV_PASSWORD")
-            .map_err(|_| ConfigError::MissingVar("CALDAV_PASSWORD".to_string()))?;
-
-        // Optional paths - it's fine if these are not set
-        let calendar_path = env::var("CALDAV_CALENDAR_PATH").ok();
-        let tasks_path = env::var("CALDAV_TASKS_PATH").ok();
-
-        Ok(CalDAVConfig {
-            server_url,
-            username,
-            password,
-            calendar_path,
-            tasks_path,
-        })
-    }
-
-    /// Generates a Base64-encoded string for HTTP Basic Authentication.
-    /// 
-    /// This method combines the username and password in the format
-    /// `username:password` and encodes it using Base64, which is the
-    /// standard format for the `Authorization: Basic` HTTP header.
-    /// 
-    /// # Returns
-    /// 
-    /// A Base64-encoded string that can be used directly in the
-    /// `Authorization` header: `Authorization: Basic <returned_value>`
-    /// 
-    /// # Example
-    /// 
-    /// ```rust
-    /// use crate::config::CalDAVConfig;
-    /// 
-    /// let config = CalDAVConfig {
-    ///     server_url: "https://example.com".to_string(),
-    ///     username: "user".to_string(),
-    ///     password: "pass".to_string(),
-    ///     calendar_path: None,
-    ///     tasks_path: None,
-    /// };
-    /// 
-    /// let auth_value = config.get_basic_auth();
-    /// let auth_header = format!("Basic {}", auth_value);
-    /// ```
-    pub fn get_basic_auth(&self) -> String {
-        let credentials = format!("{}:{}", self.username, self.password);
-        BASE64_STANDARD.encode(&credentials)
-    }
-}
-
-/// Errors that can occur when loading or using CalDAV configuration.
-#[derive(Debug, thiserror::Error)]
-pub enum ConfigError {
-    /// A required environment variable is missing or cannot be read.
-    /// 
-    /// This error occurs when calling `CalDAVConfig::from_env()` and one of the
-    /// required environment variables (`CALDAV_SERVER_URL`, `CALDAV_USERNAME`,
-    /// or `CALDAV_PASSWORD`) is not set.
-    #[error("Missing environment variable: {0}")]
-    MissingVar(String),
-    
-    /// The configuration contains invalid or malformed values.
-    /// 
-    /// This could include malformed URLs, invalid authentication credentials,
-    /// or other configuration issues that prevent proper CalDAV operation.
-    #[error("Invalid configuration: {0}")]
-    Invalid(String),
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn test_basic_auth_encoding() {
-        let config = CalDAVConfig {
-            server_url: "https://example.com".to_string(),
-            username: "testuser".to_string(),
-            password: "testpass".to_string(),
-            calendar_path: None,
-            tasks_path: None,
-        };
-
-        let auth = config.get_basic_auth();
-        let expected = BASE64_STANDARD.encode("testuser:testpass");
-        assert_eq!(auth, expected);
-    }
-
-    /// Integration test that authenticates with the actual Baikal CalDAV server
-    /// 
-    /// This test requires a valid .env file with:
-    /// - CALDAV_SERVER_URL
-    /// - CALDAV_USERNAME  
-    /// - CALDAV_PASSWORD
-    /// 
-    /// Run with: `cargo test test_baikal_auth`
-    #[tokio::test]
-    async fn test_baikal_auth() {
-        // Load config from .env
-        let config = CalDAVConfig::from_env()
-            .expect("Failed to load CalDAV config from environment");
-
-        println!("Testing authentication to: {}", config.server_url);
-
-        // Create HTTP client
-        let client = reqwest::Client::new();
-
-        // Make a simple OPTIONS request to test authentication
-        let response = client
-            .request(reqwest::Method::OPTIONS, &config.server_url)
-            .header("Authorization", format!("Basic {}", config.get_basic_auth()))
-            .header("User-Agent", "calendar-app/0.1.0")
-            .send()
-            .await
-            .expect("Failed to send request to CalDAV server");
-
-        println!("Response status: {}", response.status());
-        println!("Response headers: {:#?}", response.headers());
-
-        // Check if we got a successful response or at least not a 401 Unauthorized
-        assert!(
-            response.status().is_success() || response.status() != 401,
-            "Authentication failed with status: {}. Check your credentials in .env",
-            response.status()
-        );
-
-        // For Baikal/CalDAV servers, we should see DAV headers
-        assert!(
-            response.headers().contains_key("dav") || 
-            response.headers().contains_key("DAV") ||
-            response.status().is_success(),
-            "Server doesn't appear to be a CalDAV server - missing DAV headers"
-        );
-
-        println!("✓ Authentication test passed!");
-    }
-
-    /// Test making a PROPFIND request to discover calendars
-    /// 
-    /// This test requires a valid .env file and makes an actual CalDAV PROPFIND request
-    /// 
-    /// Run with: `cargo test test_propfind_calendars`
-    #[tokio::test]
-    async fn test_propfind_calendars() {
-        let config = CalDAVConfig::from_env()
-            .expect("Failed to load CalDAV config from environment");
-
-        let client = reqwest::Client::new();
-
-        // CalDAV PROPFIND request to discover calendars
-        let propfind_body = r#"<?xml version="1.0" encoding="utf-8" ?>
-<d:propfind xmlns:d="DAV:" xmlns:c="urn:ietf:params:xml:ns:caldav">
-    <d:prop>
-        <d:resourcetype />
-        <d:displayname />
-        <c:calendar-description />
-        <c:supported-calendar-component-set />
-    </d:prop>
-</d:propfind>"#;
-
-        let response = client
-            .request(reqwest::Method::from_bytes(b"PROPFIND").unwrap(), &config.server_url)
-            .header("Authorization", format!("Basic {}", config.get_basic_auth()))
-            .header("Content-Type", "application/xml")
-            .header("Depth", "1")
-            .header("User-Agent", "calendar-app/0.1.0")
-            .body(propfind_body)
-            .send()
-            .await
-            .expect("Failed to send PROPFIND request");
-
-        let status = response.status();
-        println!("PROPFIND Response status: {}", status);
-        
-        let body = response.text().await.expect("Failed to read response body");
-        println!("PROPFIND Response body: {}", body);
-
-        // We should get a 207 Multi-Status for PROPFIND
-        assert_eq!(
-            status,
-            reqwest::StatusCode::from_u16(207).unwrap(),
-            "PROPFIND should return 207 Multi-Status"
-        );
-
-        // The response should contain XML with calendar information
-        assert!(body.contains("calendar"), "Response should contain calendar information");
-
-        println!("✓ PROPFIND calendars test passed!");
-    }
-}

frontend/src/main.rs

@@ -1,4 +1,3 @@
-
 mod app;
 mod auth;
 mod components;
@@ -9,4 +8,4 @@ use app::App;
 
 fn main() {
     yew::Renderer::<App>::new().render();
-}
+}

frontend/src/models/ical.rs

@@ -1,2 +1,2 @@
 // Re-export from shared calendar-models library for backward compatibility
-pub use calendar_models::*;
+pub use calendar_models::*;

frontend/src/models/mod.rs

@@ -1,5 +1,5 @@
 // RFC 5545 Compliant iCalendar Models
 pub mod ical;
 
-// Re-export commonly used types  
-// pub use ical::VEvent;
+// Re-export commonly used types
+// pub use ical::VEvent;

frontend/src/services/mod.rs

@@ -1,3 +1,5 @@
 pub mod calendar_service;
+pub mod preferences;
 
-pub use calendar_service::CalendarService;
+pub use calendar_service::CalendarService;
+pub use preferences::PreferencesService;

frontend/src/services/preferences.rs

@@ -0,0 +1,177 @@
+use gloo_storage::{LocalStorage, Storage};
+use serde::{Deserialize, Serialize};
+use serde_json;
+use wasm_bindgen::JsCast;
+use wasm_bindgen_futures::JsFuture;
+use web_sys::{Request, RequestInit, RequestMode, Response};
+
+#[derive(Debug, Serialize, Deserialize, Clone)]
+pub struct UserPreferences {
+    pub calendar_selected_date: Option<String>,
+    pub calendar_time_increment: Option<i32>,
+    pub calendar_view_mode: Option<String>,
+    pub calendar_theme: Option<String>,
+    pub calendar_colors: Option<String>,
+}
+
+#[derive(Debug, Serialize)]
+pub struct UpdatePreferencesRequest {
+    pub calendar_selected_date: Option<String>,
+    pub calendar_time_increment: Option<i32>,
+    pub calendar_view_mode: Option<String>,
+    pub calendar_theme: Option<String>,
+    pub calendar_colors: Option<String>,
+}
+
+pub struct PreferencesService {
+    base_url: String,
+}
+
+impl PreferencesService {
+    pub fn new() -> Self {
+        let base_url = option_env!("BACKEND_API_URL")
+            .unwrap_or("http://localhost:3000/api")
+            .to_string();
+        
+        Self { base_url }
+    }
+    
+    /// Load preferences from LocalStorage (cached from login)
+    pub fn load_cached() -> Option<UserPreferences> {
+        if let Ok(prefs_json) = LocalStorage::get::<String>("user_preferences") {
+            serde_json::from_str(&prefs_json).ok()
+        } else {
+            None
+        }
+    }
+    
+    /// Update a single preference field and sync with backend
+    pub async fn update_preference(&self, field: &str, value: serde_json::Value) -> Result<(), String> {
+        // Get session token
+        let session_token = LocalStorage::get::<String>("session_token")
+            .map_err(|_| "No session token found".to_string())?;
+        
+        // Load current preferences
+        let mut preferences = Self::load_cached().unwrap_or(UserPreferences {
+            calendar_selected_date: None,
+            calendar_time_increment: None,
+            calendar_view_mode: None,
+            calendar_theme: None,
+            calendar_colors: None,
+        });
+        
+        // Update the specific field
+        match field {
+            "calendar_selected_date" => {
+                preferences.calendar_selected_date = value.as_str().map(|s| s.to_string());
+            }
+            "calendar_time_increment" => {
+                preferences.calendar_time_increment = value.as_i64().map(|i| i as i32);
+            }
+            "calendar_view_mode" => {
+                preferences.calendar_view_mode = value.as_str().map(|s| s.to_string());
+            }
+            "calendar_theme" => {
+                preferences.calendar_theme = value.as_str().map(|s| s.to_string());
+            }
+            "calendar_colors" => {
+                preferences.calendar_colors = value.as_str().map(|s| s.to_string());
+            }
+            _ => return Err(format!("Unknown preference field: {}", field)),
+        }
+        
+        // Save to LocalStorage cache
+        if let Ok(prefs_json) = serde_json::to_string(&preferences) {
+            let _ = LocalStorage::set("user_preferences", &prefs_json);
+        }
+        
+        // Sync with backend
+        let request = UpdatePreferencesRequest {
+            calendar_selected_date: preferences.calendar_selected_date.clone(),
+            calendar_time_increment: preferences.calendar_time_increment,
+            calendar_view_mode: preferences.calendar_view_mode.clone(),
+            calendar_theme: preferences.calendar_theme.clone(),
+            calendar_colors: preferences.calendar_colors.clone(),
+        };
+        
+        self.sync_preferences(&session_token, &request).await
+    }
+    
+    /// Sync all preferences with backend
+    async fn sync_preferences(
+        &self,
+        session_token: &str,
+        request: &UpdatePreferencesRequest,
+    ) -> Result<(), String> {
+        let window = web_sys::window().ok_or("No global window exists")?;
+        
+        let json_body = serde_json::to_string(request)
+            .map_err(|e| format!("JSON serialization failed: {}", e))?;
+        
+        let opts = RequestInit::new();
+        opts.set_method("POST");
+        opts.set_mode(RequestMode::Cors);
+        opts.set_body(&wasm_bindgen::JsValue::from_str(&json_body));
+        
+        let url = format!("{}/preferences", self.base_url);
+        let request = Request::new_with_str_and_init(&url, &opts)
+            .map_err(|e| format!("Request creation failed: {:?}", e))?;
+        
+        request
+            .headers()
+            .set("Content-Type", "application/json")
+            .map_err(|e| format!("Header setting failed: {:?}", e))?;
+        
+        request
+            .headers()
+            .set("X-Session-Token", session_token)
+            .map_err(|e| format!("Header setting failed: {:?}", e))?;
+        
+        let resp_value = JsFuture::from(window.fetch_with_request(&request))
+            .await
+            .map_err(|e| format!("Network request failed: {:?}", e))?;
+        
+        let resp: Response = resp_value
+            .dyn_into()
+            .map_err(|e| format!("Response cast failed: {:?}", e))?;
+        
+        if resp.ok() {
+            Ok(())
+        } else {
+            Err(format!("Failed to update preferences: {}", resp.status()))
+        }
+    }
+    
+    /// Migrate preferences from LocalStorage to backend (on first login after update)
+    pub async fn migrate_from_local_storage(&self) -> Result<(), String> {
+        let session_token = LocalStorage::get::<String>("session_token")
+            .map_err(|_| "No session token found".to_string())?;
+        
+        let mut request = UpdatePreferencesRequest {
+            calendar_selected_date: LocalStorage::get::<String>("calendar_selected_date").ok(),
+            calendar_time_increment: LocalStorage::get::<u32>("calendar_time_increment").ok().map(|i| i as i32),
+            calendar_view_mode: LocalStorage::get::<String>("calendar_view_mode").ok(),
+            calendar_theme: LocalStorage::get::<String>("calendar_theme").ok(),
+            calendar_colors: LocalStorage::get::<String>("calendar_colors").ok(),
+        };
+        
+        // Only migrate if we have some preferences to migrate
+        if request.calendar_selected_date.is_some()
+            || request.calendar_time_increment.is_some()
+            || request.calendar_view_mode.is_some()
+            || request.calendar_theme.is_some()
+            || request.calendar_colors.is_some()
+        {
+            self.sync_preferences(&session_token, &request).await?;
+            
+            // Clear old LocalStorage entries after successful migration
+            let _ = LocalStorage::delete("calendar_selected_date");
+            let _ = LocalStorage::delete("calendar_time_increment");
+            let _ = LocalStorage::delete("calendar_view_mode");
+            let _ = LocalStorage::delete("calendar_theme");
+            let _ = LocalStorage::delete("calendar_colors");
+        }
+        
+        Ok(())
+    }
+}

frontend/styles.css

@@ -289,6 +289,30 @@ body {
     cursor: not-allowed;
 }
 
+.remember-checkbox {
+    display: flex;
+    align-items: center;
+    gap: 0.375rem;
+    margin-top: 0.375rem;
+    opacity: 0.7;
+}
+
+.remember-checkbox input[type="checkbox"] {
+    width: auto;
+    margin: 0;
+    cursor: pointer;
+    transform: scale(0.85);
+}
+
+.remember-checkbox label {
+    margin: 0;
+    font-size: 0.75rem;
+    color: #888;
+    cursor: pointer;
+    user-select: none;
+    font-weight: 400;
+}
+
 .login-button, .register-button {
     width: 100%;
     padding: 0.75rem;

integration_plan.md

@@ -1,186 +0,0 @@
-# RFC 5545 Integration Plan
-
-## Phase 1: Core Structure Replacement (High Impact, Low Risk)
-
-### 1.1 Replace Event Models
-**Files to Update:**
-- `backend/src/calendar.rs` - Replace `CalendarEvent` with `VEvent`
-- `src/services/calendar_service.rs` - Replace `CalendarEvent` with `VEvent`
-- Remove duplicate structures, use single source of truth
-
-**Benefits:**
-- ✅ Eliminate duplicate event definitions
-- ✅ Add missing DTSTAMP (RFC required)
-- ✅ Add SEQUENCE for proper versioning
-- ✅ Standardize on DateTime<Utc> instead of string parsing
-
-### 1.2 Simplify Request/Response Models
-**Files to Update:**
-- `backend/src/models.rs` - Replace string-based fields
-
-**Current (Complex):**
-```rust
-pub start_date: String,        // YYYY-MM-DD format
-pub start_time: String,        // HH:MM format  
-pub categories: String,        // comma-separated
-pub attendees: String,         // comma-separated
-```
-
-**New (Simple):**
-```rust
-pub dtstart: DateTime<Utc>,
-pub categories: Vec<String>,
-pub attendees: Vec<Attendee>,
-```
-
-**Benefits:**
-- ✅ Remove ~50 lines of manual string parsing in handlers
-- ✅ Better type safety
-- ✅ Automatic validation
-
-## Phase 2: Enhanced Functionality (Medium Impact, Medium Risk)
-
-### 2.1 Add Rich Attendee Support
-**Current:** `Vec<String>` (just emails)
-**New:** `Vec<Attendee>` with roles, status, RSVP
-
-**Benefits:**
-- ✅ Proper meeting invitations
-- ✅ RSVP tracking
-- ✅ Role-based permissions (Chair, Required, Optional)
-
-### 2.2 Structured Reminders/Alarms
-**Current:** Simple reminder minutes
-**New:** Full `VAlarm` component with actions, triggers
-
-**Benefits:**
-- ✅ Multiple reminder types (email, display, audio)
-- ✅ Complex trigger patterns
-- ✅ Better CalDAV compatibility
-
-### 2.3 Geographic Location Support
-**New Addition:** `GEO` property for latitude/longitude
-
-**Benefits:**
-- ✅ Map integration possibilities
-- ✅ Location-based reminders
-- ✅ Travel time calculations
-
-## Phase 3: Advanced Components (High Impact, Higher Risk)
-
-### 3.1 Add VTODO Support
-**New Component:** Task/To-Do management
-
-**Benefits:**
-- ✅ Unified calendar + task system
-- ✅ Due dates, completion tracking
-- ✅ Priority management
-
-### 3.2 Add VJOURNAL Support
-**New Component:** Journal/diary entries
-
-**Benefits:**
-- ✅ Meeting notes integration
-- ✅ Daily journaling
-- ✅ Full calendar suite
-
-### 3.3 Add VFREEBUSY Support
-**New Component:** Availability tracking
-
-**Benefits:**
-- ✅ Meeting scheduling optimization
-- ✅ Conflict detection
-- ✅ Resource booking
-
-## Implementation Strategy
-
-### Immediate Actions (Can Start Now)
-1. **Add compatibility layer** in existing `CalendarEvent` to support new fields
-2. **Implement conversion functions** between old/new structures
-3. **Update backend models** to use DateTime instead of string parsing
-
-### Quick Wins (1-2 hours each)
-1. **Replace string date parsing** in `backend/src/handlers.rs`
-2. **Add missing DTSTAMP** to all events (RFC compliance)
-3. **Convert categories/attendees** from comma-separated strings to vectors
-
-### Medium Effort (3-5 hours each)
-1. **Unified event structure** across frontend/backend
-2. **Rich attendee management** with roles and status
-3. **Structured alarm system**
-
-### Long Term (Future enhancements)
-1. **Full VTODO implementation**
-2. **VJOURNAL support**
-3. **VFREEBUSY and scheduling**
-
-## Risk Mitigation
-
-### Backward Compatibility
-- Keep existing API endpoints working
-- Add conversion functions between old/new formats
-- Gradual migration, not big-bang replacement
-
-### Testing Strategy
-- Add tests for RFC 5545 compliance
-- Test CalDAV interoperability
-- Validate against multiple calendar clients
-
-### Rollback Plan
-- Keep old structures as fallback
-- Feature flags for new functionality
-- Incremental deployment
-
-## Expected Benefits
-
-### Developer Experience
-- **50% reduction** in date/time parsing code
-- **Elimination** of string-based field parsing
-- **Type safety** for all calendar operations
-- **Standards compliance** reduces debugging
-
-### User Experience
-- **Better CalDAV compatibility** with all clients
-- **Rich attendee management** for meetings
-- **Proper timezone handling**
-- **Future-proof** for advanced features
-
-### Maintenance
-- **Single source of truth** for event data
-- **RFC 5545 compliance** eliminates compatibility issues
-- **Cleaner codebase** with less duplication
-- **Easier testing** with structured data
-
-## File Impact Analysis
-
-### High Impact Files (Need Updates)
-```
-backend/src/models.rs       - Replace request/response structs
-backend/src/handlers.rs     - Remove string parsing logic
-backend/src/calendar.rs     - Replace CalendarEvent
-src/services/calendar_service.rs - Use unified structures
-```
-
-### Medium Impact Files (Minor Changes)
-```
-src/components/create_event_modal.rs - Update form handling
-src/components/event_modal.rs        - Display enhancements
-backend/src/lib.rs                   - Add new modules
-```
-
-### Low Impact Files (Minimal/No Changes)
-```
-src/components/week_view.rs   - Just use new event structure
-src/components/month_view.rs  - Just use new event structure
-styles.css                   - No changes needed
-```
-
-## Next Steps
-
-1. **Review this plan** with team/stakeholders
-2. **Create branch** for RFC 5545 integration
-3. **Start with Phase 1.1** - Core structure replacement
-4. **Implement conversion functions** for compatibility
-5. **Update one handler at a time** to reduce risk
-
-The integration will significantly simplify the codebase while adding professional-grade calendar functionality!

test_backend_url.js

@@ -1 +0,0 @@
-console.log("Backend URL test");