Fix calendar event fetching to use visible date range

Moved event fetching logic from CalendarView to Calendar component to properly
use the visible date range instead of hardcoded current month. The Calendar
component already tracks the current visible date through navigation, so events
now load correctly for August and other months when navigating.

Changes:
- Calendar component now manages its own events state and fetching
- Event fetching responds to current_date changes from navigation
- CalendarView simplified to just render Calendar component
- Fixed cargo fmt/clippy formatting across codebase

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

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

backend/src/auth.rs

@@ -2,16 +2,16 @@ use chrono::{Duration, Utc};
 use jsonwebtoken::{decode, encode, Algorithm, DecodingKey, EncodingKey, Header, Validation};
 use serde::{Deserialize, Serialize};
 
-use crate::models::{CalDAVLoginRequest, AuthResponse, ApiError};
-use crate::config::CalDAVConfig;
 use crate::calendar::CalDAVClient;
+use crate::config::CalDAVConfig;
+use crate::models::{ApiError, AuthResponse, CalDAVLoginRequest};
 
 #[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)]
@@ -34,7 +34,7 @@ impl AuthService {
         let caldav_config = CalDAVConfig::new(
             request.server_url.clone(),
             request.username.clone(),
-            request.password.clone()
+            request.password.clone(),
         );
         println!("📝 Created CalDAV config");
 
@@ -45,7 +45,10 @@ impl AuthService {
         // Try to discover calendars as an authentication test
         match caldav_client.discover_calendars().await {
             Ok(calendars) => {
-                println!("✅ Authentication successful! Found {} calendars", calendars.len());
+                println!(
+                    "✅ Authentication successful! Found {} calendars",
+                    calendars.len()
+                );
                 // Authentication successful, generate JWT token
                 let token = self.generate_token(&request.username, &request.server_url)?;
 
@@ -58,7 +61,9 @@ impl AuthService {
             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(),
+                ))
             }
         }
     }
@@ -69,13 +74,17 @@ 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::new(
             claims.server_url,
             claims.username,
-            password.to_string()
+            password.to_string(),
         ))
     }
 
@@ -93,8 +102,11 @@ 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(())

backend/src/calendar.rs

@@ -1,9 +1,9 @@
+use calendar_models::{CalendarUser, EventClass, EventStatus, VAlarm, VEvent};
 use chrono::{DateTime, Utc};
 use serde::{Deserialize, Serialize};
 use std::collections::HashMap;
 use std::sync::Arc;
 use tokio::sync::Mutex;
-use calendar_models::{VEvent, EventStatus, EventClass, CalendarUser, VAlarm};
 
 // Global mutex to serialize CalDAV HTTP requests to prevent race conditions
 lazy_static::lazy_static! {
@@ -128,7 +128,10 @@ impl CalDAVClient {
     ///
     /// This method performs a REPORT request to get calendar data and parses
     /// the returned iCalendar format into CalendarEvent structs.
-    pub async fn fetch_events(&self, calendar_path: &str) -> Result<Vec<CalendarEvent>, CalDAVError> {
+    pub async fn fetch_events(
+        &self,
+        calendar_path: &str,
+    ) -> Result<Vec<CalendarEvent>, CalDAVError> {
         // CalDAV REPORT request to get calendar events
         let report_body = r#"<?xml version="1.0" encoding="utf-8" ?>
 <c:calendar-query xmlns:d="DAV:" xmlns:c="urn:ietf:params:xml:ns:caldav">
@@ -149,7 +152,11 @@ impl CalDAVClient {
             // Extract the base URL (scheme + host + port) from server_url
             let server_url = &self.config.server_url;
             // Find the first '/' after "https://" or "http://"
-            let scheme_end = if server_url.starts_with("https://") { 8 } else { 7 };
+            let scheme_end = if server_url.starts_with("https://") {
+                8
+            } else {
+                7
+            };
             if let Some(path_start) = server_url[scheme_end..].find('/') {
                 let base_url = &server_url[..scheme_end + path_start];
                 format!("{}{}", base_url, calendar_path)
@@ -163,7 +170,8 @@ impl CalDAVClient {
         println!("🔑 REPORT Basic Auth: Basic {}", basic_auth);
         println!("🌐 REPORT URL: {}", url);
 
-        let response = self.http_client
+        let response = self
+            .http_client
             .request(reqwest::Method::from_bytes(b"REPORT").unwrap(), &url)
             .header("Authorization", format!("Basic {}", basic_auth))
             .header("Content-Type", "application/xml")
@@ -183,7 +191,11 @@ impl CalDAVClient {
     }
 
     /// Parse CalDAV XML response containing calendar data
-    fn parse_calendar_response(&self, xml_response: &str, calendar_path: &str) -> Result<Vec<CalendarEvent>, CalDAVError> {
+    fn parse_calendar_response(
+        &self,
+        xml_response: &str,
+        calendar_path: &str,
+    ) -> Result<Vec<CalendarEvent>, CalDAVError> {
         let mut events = Vec::new();
 
         // Extract calendar data from XML response
@@ -205,7 +217,11 @@ impl CalDAVClient {
     }
 
     /// Fetch a single calendar event by UID from the CalDAV server
-    pub async fn fetch_event_by_uid(&self, calendar_path: &str, uid: &str) -> Result<Option<CalendarEvent>, CalDAVError> {
+    pub async fn fetch_event_by_uid(
+        &self,
+        calendar_path: &str,
+        uid: &str,
+    ) -> Result<Option<CalendarEvent>, CalDAVError> {
         // First fetch all events and find the one with matching UID
         let events = self.fetch_events(calendar_path).await?;
 
@@ -225,10 +241,16 @@ impl CalDAVClient {
             if let Some(end_pos) = response_block.find("</d:response>") {
                 let response_content = &response_block[..end_pos];
 
-                let href = self.extract_xml_content(response_content, "href").unwrap_or_default();
-                let etag = self.extract_xml_content(response_content, "getetag").unwrap_or_default();
+                let href = self
+                    .extract_xml_content(response_content, "href")
+                    .unwrap_or_default();
+                let etag = self
+                    .extract_xml_content(response_content, "getetag")
+                    .unwrap_or_default();
 
-                if let Some(calendar_data) = self.extract_xml_content(response_content, "cal:calendar-data") {
+                if let Some(calendar_data) =
+                    self.extract_xml_content(response_content, "cal:calendar-data")
+                {
                     sections.push(CalendarDataSection {
                         href: if href.is_empty() { None } else { Some(href) },
                         etag: if etag.is_empty() { None } else { Some(etag) },
@@ -245,12 +267,28 @@ impl CalDAVClient {
     fn extract_xml_content(&self, xml: &str, tag: &str) -> Option<String> {
         // Handle both with and without namespace prefixes
         let patterns = [
-            format!("(?s)<{}>(.*?)</{}>", tag, tag),                    // <tag>content</tag>
-            format!("(?s)<{}>(.*?)</.*:{}>", tag, tag.split(':').last().unwrap_or(tag)),  // <tag>content</ns:tag>
-            format!("(?s)<.*:{}>(.*?)</{}>", tag.split(':').last().unwrap_or(tag), tag), // <ns:tag>content</tag>
-            format!("(?s)<.*:{}>(.*?)</.*:{}>", tag.split(':').last().unwrap_or(tag), tag.split(':').last().unwrap_or(tag)), // <ns:tag>content</ns:tag>
-            format!("(?s)<{}[^>]*>(.*?)</{}>", tag, tag),               // <tag attr>content</tag>
-            format!("(?s)<{}[^>]*>(.*?)</.*:{}>", tag, tag.split(':').last().unwrap_or(tag)),
+            format!("(?s)<{}>(.*?)</{}>", tag, tag), // <tag>content</tag>
+            format!(
+                "(?s)<{}>(.*?)</.*:{}>",
+                tag,
+                tag.split(':').last().unwrap_or(tag)
+            ), // <tag>content</ns:tag>
+            format!(
+                "(?s)<.*:{}>(.*?)</{}>",
+                tag.split(':').last().unwrap_or(tag),
+                tag
+            ), // <ns:tag>content</tag>
+            format!(
+                "(?s)<.*:{}>(.*?)</.*:{}>",
+                tag.split(':').last().unwrap_or(tag),
+                tag.split(':').last().unwrap_or(tag)
+            ), // <ns:tag>content</ns:tag>
+            format!("(?s)<{}[^>]*>(.*?)</{}>", tag, tag), // <tag attr>content</tag>
+            format!(
+                "(?s)<{}[^>]*>(.*?)</.*:{}>",
+                tag,
+                tag.split(':').last().unwrap_or(tag)
+            ),
         ];
 
         for pattern in &patterns {
@@ -287,21 +325,29 @@ impl CalDAVClient {
     }
 
     /// Parse a single iCal event into a CalendarEvent struct
-    fn parse_ical_event(&self, event: ical::parser::ical::component::IcalEvent) -> Result<CalendarEvent, CalDAVError> {
+    fn parse_ical_event(
+        &self,
+        event: ical::parser::ical::component::IcalEvent,
+    ) -> Result<CalendarEvent, CalDAVError> {
         let mut properties: HashMap<String, String> = HashMap::new();
 
         // Extract all properties from the event
         for property in &event.properties {
-            properties.insert(property.name.to_uppercase(), property.value.clone().unwrap_or_default());
+            properties.insert(
+                property.name.to_uppercase(),
+                property.value.clone().unwrap_or_default(),
+            );
         }
 
         // Required UID field
-        let uid = properties.get("UID")
+        let uid = properties
+            .get("UID")
             .ok_or_else(|| CalDAVError::ParseError("Missing UID field".to_string()))?
             .clone();
 
         // Parse start time (required)
-        let start = properties.get("DTSTART")
+        let start = properties
+            .get("DTSTART")
             .ok_or_else(|| CalDAVError::ParseError("Missing DTSTART field".to_string()))?;
         let start = self.parse_datetime(start, properties.get("DTSTART"))?;
 
@@ -316,12 +362,14 @@ impl CalDAVClient {
         };
 
         // Determine if it's an all-day event
-        let all_day = properties.get("DTSTART")
+        let all_day = properties
+            .get("DTSTART")
             .map(|s| !s.contains("T"))
             .unwrap_or(false);
 
         // Parse status
-        let status = properties.get("STATUS")
+        let status = properties
+            .get("STATUS")
             .map(|s| match s.to_uppercase().as_str() {
                 "TENTATIVE" => EventStatus::Tentative,
                 "CANCELLED" => EventStatus::Cancelled,
@@ -330,7 +378,8 @@ impl CalDAVClient {
             .unwrap_or(EventStatus::Confirmed);
 
         // Parse classification
-        let class = properties.get("CLASS")
+        let class = properties
+            .get("CLASS")
             .map(|s| match s.to_uppercase().as_str() {
                 "PRIVATE" => EventClass::Private,
                 "CONFIDENTIAL" => EventClass::Confidential,
@@ -339,20 +388,24 @@ impl CalDAVClient {
             .unwrap_or(EventClass::Public);
 
         // Parse priority
-        let priority = properties.get("PRIORITY")
+        let priority = properties
+            .get("PRIORITY")
             .and_then(|s| s.parse::<u8>().ok())
             .filter(|&p| p <= 9);
 
         // Parse categories
-        let categories = properties.get("CATEGORIES")
+        let categories = properties
+            .get("CATEGORIES")
             .map(|s| s.split(',').map(|c| c.trim().to_string()).collect())
             .unwrap_or_default();
 
         // Parse dates
-        let created = properties.get("CREATED")
+        let created = properties
+            .get("CREATED")
             .and_then(|s| self.parse_datetime(s, None).ok());
 
-        let last_modified = properties.get("LAST-MODIFIED")
+        let last_modified = properties
+            .get("LAST-MODIFIED")
             .and_then(|s| self.parse_datetime(s, None).ok());
 
         // Parse exception dates (EXDATE)
@@ -403,7 +456,10 @@ impl CalDAVClient {
     }
 
     /// Parse VALARM components from an iCal event
-    fn parse_valarms(&self, event: &ical::parser::ical::component::IcalEvent) -> Result<Vec<VAlarm>, CalDAVError> {
+    fn parse_valarms(
+        &self,
+        event: &ical::parser::ical::component::IcalEvent,
+    ) -> Result<Vec<VAlarm>, CalDAVError> {
         let mut alarms = Vec::new();
 
         for alarm in &event.alarms {
@@ -416,20 +472,30 @@ impl CalDAVClient {
     }
 
     /// Parse a single VALARM component into a VAlarm
-    fn parse_single_valarm(&self, alarm: &ical::parser::ical::component::IcalAlarm) -> Result<VAlarm, CalDAVError> {
+    fn parse_single_valarm(
+        &self,
+        alarm: &ical::parser::ical::component::IcalAlarm,
+    ) -> Result<VAlarm, CalDAVError> {
         let mut properties: HashMap<String, String> = HashMap::new();
 
         // Extract all properties from the alarm
         for property in &alarm.properties {
-            properties.insert(property.name.to_uppercase(), property.value.clone().unwrap_or_default());
+            properties.insert(
+                property.name.to_uppercase(),
+                property.value.clone().unwrap_or_default(),
+            );
         }
 
         // Parse ACTION (required)
         let action = match properties.get("ACTION").map(|s| s.to_uppercase()) {
-            Some(ref action_str) if action_str == "DISPLAY" => calendar_models::AlarmAction::Display,
+            Some(ref action_str) if action_str == "DISPLAY" => {
+                calendar_models::AlarmAction::Display
+            }
             Some(ref action_str) if action_str == "EMAIL" => calendar_models::AlarmAction::Email,
             Some(ref action_str) if action_str == "AUDIO" => calendar_models::AlarmAction::Audio,
-            Some(ref action_str) if action_str == "PROCEDURE" => calendar_models::AlarmAction::Procedure,
+            Some(ref action_str) if action_str == "PROCEDURE" => {
+                calendar_models::AlarmAction::Procedure
+            }
             _ => calendar_models::AlarmAction::Display, // Default
         };
 
@@ -468,15 +534,15 @@ impl CalDAVClient {
 
         if trigger.starts_with("-PT") && trigger.ends_with("M") {
             // Parse "-PT15M" format (minutes)
-            let minutes_str = &trigger[3..trigger.len()-1];
+            let minutes_str = &trigger[3..trigger.len() - 1];
             minutes_str.parse::<i32>().ok()
         } else if trigger.starts_with("-PT") && trigger.ends_with("H") {
             // Parse "-PT1H" format (hours)
-            let hours_str = &trigger[3..trigger.len()-1];
+            let hours_str = &trigger[3..trigger.len() - 1];
             hours_str.parse::<i32>().ok().map(|h| h * 60)
         } else if trigger.starts_with("-P") && trigger.ends_with("D") {
             // Parse "-P1D" format (days)
-            let days_str = &trigger[2..trigger.len()-1];
+            let days_str = &trigger[2..trigger.len() - 1];
             days_str.parse::<i32>().ok().map(|d| d * 24 * 60)
         } else {
             // Try to parse as raw minutes
@@ -498,10 +564,7 @@ impl CalDAVClient {
         // Note: paths should be relative to the server URL base
         let user_calendar_path = format!("/calendars/{}/", self.config.username);
 
-        let discovery_paths = vec![
-            "/calendars/",
-            user_calendar_path.as_str(),
-        ];
+        let discovery_paths = vec!["/calendars/", user_calendar_path.as_str()];
 
         let mut all_calendars = Vec::new();
 
@@ -533,9 +596,13 @@ impl CalDAVClient {
 
         let url = format!("{}{}", self.config.server_url.trim_end_matches('/'), path);
 
-        let response = self.http_client
+        let response = self
+            .http_client
             .request(reqwest::Method::from_bytes(b"PROPFIND").unwrap(), &url)
-            .header("Authorization", format!("Basic {}", self.config.get_basic_auth()))
+            .header(
+                "Authorization",
+                format!("Basic {}", self.config.get_basic_auth()),
+            )
             .header("Content-Type", "application/xml")
             .header("Depth", "2") // Deeper search to find actual calendars
             .header("User-Agent", "calendar-app/0.1.0")
@@ -545,7 +612,11 @@ impl CalDAVClient {
             .map_err(CalDAVError::RequestError)?;
 
         if response.status().as_u16() != 207 {
-            println!("❌ Discovery PROPFIND failed for {}: HTTP {}", path, response.status().as_u16());
+            println!(
+                "❌ Discovery PROPFIND failed for {}: HTTP {}",
+                path,
+                response.status().as_u16()
+            );
             return Err(CalDAVError::ServerError(response.status().as_u16()));
         }
 
@@ -565,19 +636,26 @@ impl CalDAVClient {
 
                     // Check if this is a calendar collection by looking for supported-calendar-component-set
                     // This indicates it's an actual calendar that can contain events
-                    let has_supported_components = response_content.contains("supported-calendar-component-set") &&
-                                                  (response_content.contains("VEVENT") || response_content.contains("VTODO"));
-                    let has_calendar_resourcetype = response_content.contains("<cal:calendar") || response_content.contains("<c:calendar");
+                    let has_supported_components = response_content
+                        .contains("supported-calendar-component-set")
+                        && (response_content.contains("VEVENT")
+                            || response_content.contains("VTODO"));
+                    let has_calendar_resourcetype = response_content.contains("<cal:calendar")
+                        || response_content.contains("<c:calendar");
 
                     let is_calendar = has_supported_components || has_calendar_resourcetype;
 
                     // Also check resourcetype for collection
-                    let has_collection = response_content.contains("<d:collection") || response_content.contains("<collection");
+                    let has_collection = response_content.contains("<d:collection")
+                        || response_content.contains("<collection");
 
                     if is_calendar && has_collection {
                         // Exclude system directories like inbox, outbox, and root calendar directories
-                        if !href.contains("/inbox/") && !href.contains("/outbox/") && 
-                           !href.ends_with("/calendars/") && href.ends_with('/') {
+                        if !href.contains("/inbox/")
+                            && !href.contains("/outbox/")
+                            && !href.ends_with("/calendars/")
+                            && href.ends_with('/')
+                        {
                             println!("📅 Found calendar collection: {}", href);
                             calendar_paths.push(href);
                         } else {
@@ -595,7 +673,11 @@ impl CalDAVClient {
     }
 
     /// Parse iCal datetime format
-    fn parse_datetime(&self, datetime_str: &str, _original_property: Option<&String>) -> Result<DateTime<Utc>, CalDAVError> {
+    fn parse_datetime(
+        &self,
+        datetime_str: &str,
+        _original_property: Option<&String>,
+    ) -> Result<DateTime<Utc>, CalDAVError> {
         use chrono::TimeZone;
 
         // Handle different iCal datetime formats
@@ -603,9 +685,9 @@ impl CalDAVClient {
 
         // Try different parsing formats
         let formats = [
-            "%Y%m%dT%H%M%SZ",        // UTC format: 20231225T120000Z
-            "%Y%m%dT%H%M%S",         // Local format: 20231225T120000
-            "%Y%m%d",                // Date only: 20231225
+            "%Y%m%dT%H%M%SZ", // UTC format: 20231225T120000Z
+            "%Y%m%dT%H%M%S",  // Local format: 20231225T120000
+            "%Y%m%d",         // Date only: 20231225
         ];
 
         for format in &formats {
@@ -617,7 +699,10 @@ impl CalDAVClient {
             }
         }
 
-        Err(CalDAVError::ParseError(format!("Unable to parse datetime: {}", datetime_str)))
+        Err(CalDAVError::ParseError(format!(
+            "Unable to parse datetime: {}",
+            datetime_str
+        )))
     }
 
     /// Parse EXDATE properties from an iCal event
@@ -643,7 +728,12 @@ impl CalDAVClient {
     }
 
     /// Create a new calendar on the CalDAV server using MKCALENDAR
-    pub async fn create_calendar(&self, name: &str, description: Option<&str>, color: Option<&str>) -> Result<(), CalDAVError> {
+    pub async fn create_calendar(
+        &self,
+        name: &str,
+        description: Option<&str>,
+        color: Option<&str>,
+    ) -> Result<(), CalDAVError> {
         // Sanitize calendar name for URL path
         let calendar_id = name
             .chars()
@@ -652,17 +742,27 @@ impl CalDAVClient {
             .to_lowercase();
 
         let calendar_path = format!("/calendars/{}/{}/", self.config.username, calendar_id);
-        let full_url = format!("{}{}", self.config.server_url.trim_end_matches('/'), calendar_path);
+        let full_url = format!(
+            "{}{}",
+            self.config.server_url.trim_end_matches('/'),
+            calendar_path
+        );
 
         // Build color property if provided
         let color_property = if let Some(color) = color {
-            format!(r#"<ic:calendar-color xmlns:ic="http://apple.com/ns/ical/">{}</ic:calendar-color>"#, color)
+            format!(
+                r#"<ic:calendar-color xmlns:ic="http://apple.com/ns/ical/">{}</ic:calendar-color>"#,
+                color
+            )
         } else {
             String::new()
         };
 
         let description_property = if let Some(desc) = description {
-            format!(r#"<c:calendar-description xmlns:c="urn:ietf:params:xml:ns:caldav">{}</c:calendar-description>"#, desc)
+            format!(
+                r#"<c:calendar-description xmlns:c="urn:ietf:params:xml:ns:caldav">{}</c:calendar-description>"#,
+                desc
+            )
         } else {
             String::new()
         };
@@ -688,10 +788,17 @@ impl CalDAVClient {
         println!("Creating calendar at: {}", full_url);
         println!("MKCALENDAR body: {}", mkcalendar_body);
 
-        let response = self.http_client
-            .request(reqwest::Method::from_bytes(b"MKCALENDAR").unwrap(), &full_url)
+        let response = self
+            .http_client
+            .request(
+                reqwest::Method::from_bytes(b"MKCALENDAR").unwrap(),
+                &full_url,
+            )
             .header("Content-Type", "application/xml; charset=utf-8")
-            .header("Authorization", format!("Basic {}", self.config.get_basic_auth()))
+            .header(
+                "Authorization",
+                format!("Basic {}", self.config.get_basic_auth()),
+            )
             .body(mkcalendar_body)
             .send()
             .await
@@ -721,14 +828,22 @@ impl CalDAVClient {
             } else {
                 calendar_path
             };
-            format!("{}{}", self.config.server_url.trim_end_matches('/'), clean_path)
+            format!(
+                "{}{}",
+                self.config.server_url.trim_end_matches('/'),
+                clean_path
+            )
         };
 
         println!("Deleting calendar at: {}", full_url);
 
-        let response = self.http_client
+        let response = self
+            .http_client
             .delete(&full_url)
-            .header("Authorization", format!("Basic {}", self.config.get_basic_auth()))
+            .header(
+                "Authorization",
+                format!("Basic {}", self.config.get_basic_auth()),
+            )
             .send()
             .await
             .map_err(|e| CalDAVError::ParseError(e.to_string()))?;
@@ -747,7 +862,11 @@ impl CalDAVClient {
     }
 
     /// Create a new event in a CalDAV calendar
-    pub async fn create_event(&self, calendar_path: &str, event: &CalendarEvent) -> Result<String, CalDAVError> {
+    pub async fn create_event(
+        &self,
+        calendar_path: &str,
+        event: &CalendarEvent,
+    ) -> Result<String, CalDAVError> {
         // Generate a unique filename for the event (using UID + .ics extension)
         let event_filename = format!("{}.ics", event.uid);
 
@@ -790,9 +909,13 @@ impl CalDAVClient {
         let _lock = CALDAV_HTTP_MUTEX.lock().await;
         println!("📡 Lock acquired, sending CREATE request to CalDAV server...");
 
-        let response = self.http_client
+        let response = self
+            .http_client
             .put(&full_url)
-            .header("Authorization", format!("Basic {}", self.config.get_basic_auth()))
+            .header(
+                "Authorization",
+                format!("Basic {}", self.config.get_basic_auth()),
+            )
             .header("Content-Type", "text/calendar; charset=utf-8")
             .header("User-Agent", "calendar-app/0.1.0")
             .body(ical_data)
@@ -814,13 +937,22 @@ impl CalDAVClient {
     }
 
     /// Update an existing event on the CalDAV server
-    pub async fn update_event(&self, calendar_path: &str, event: &CalendarEvent, event_href: &str) -> Result<(), CalDAVError> {
+    pub async fn update_event(
+        &self,
+        calendar_path: &str,
+        event: &CalendarEvent,
+        event_href: &str,
+    ) -> Result<(), CalDAVError> {
         // Construct the full URL for the event
         let full_url = if event_href.starts_with("http") {
             event_href.to_string()
         } else if event_href.starts_with("/dav.php") {
             // Event href is already a full path, combine with base server URL (without /dav.php)
-            let base_url = self.config.server_url.trim_end_matches('/').trim_end_matches("/dav.php");
+            let base_url = self
+                .config
+                .server_url
+                .trim_end_matches('/')
+                .trim_end_matches("/dav.php");
             format!("{}{}", base_url, event_href)
         } else {
             // Event href is just a filename, combine with calendar path
@@ -829,7 +961,12 @@ impl CalDAVClient {
             } else {
                 calendar_path
             };
-            format!("{}/dav.php{}/{}", self.config.server_url.trim_end_matches('/'), clean_path, event_href)
+            format!(
+                "{}/dav.php{}/{}",
+                self.config.server_url.trim_end_matches('/'),
+                clean_path,
+                event_href
+            )
         };
 
         println!("📝 Updating event at: {}", full_url);
@@ -846,9 +983,13 @@ impl CalDAVClient {
         println!("🔗 PUT URL: {}", full_url);
         println!("🔍 Request headers: Authorization: Basic [HIDDEN], Content-Type: text/calendar; charset=utf-8");
 
-        let response = self.http_client
+        let response = self
+            .http_client
             .put(&full_url)
-            .header("Authorization", format!("Basic {}", self.config.get_basic_auth()))
+            .header(
+                "Authorization",
+                format!("Basic {}", self.config.get_basic_auth()),
+            )
             .header("Content-Type", "text/calendar; charset=utf-8")
             .header("User-Agent", "calendar-app/0.1.0")
             .timeout(std::time::Duration::from_secs(30))
@@ -862,7 +1003,10 @@ impl CalDAVClient {
 
         println!("Event update response status: {}", response.status());
 
-        if response.status().is_success() || response.status().as_u16() == 201 || response.status().as_u16() == 204 {
+        if response.status().is_success()
+            || response.status().as_u16() == 201
+            || response.status().as_u16() == 204
+        {
             println!("✅ Event updated successfully");
             Ok(())
         } else {
@@ -878,13 +1022,10 @@ impl CalDAVClient {
         let now = chrono::Utc::now();
 
         // Format datetime for iCal (YYYYMMDDTHHMMSSZ format)
-        let format_datetime = |dt: &DateTime<Utc>| -> String {
-            dt.format("%Y%m%dT%H%M%SZ").to_string()
-        };
+        let format_datetime =
+            |dt: &DateTime<Utc>| -> String { dt.format("%Y%m%dT%H%M%SZ").to_string() };
 
-        let format_date = |dt: &DateTime<Utc>| -> String {
-            dt.format("%Y%m%d").to_string()
-        };
+        let format_date = |dt: &DateTime<Utc>| -> String { dt.format("%Y%m%d").to_string() };
 
         // Start building the iCal event
         let mut ical = String::new();
@@ -899,7 +1040,10 @@ impl CalDAVClient {
 
         // Start and end times
         if event.all_day {
-            ical.push_str(&format!("DTSTART;VALUE=DATE:{}\r\n", format_date(&event.dtstart)));
+            ical.push_str(&format!(
+                "DTSTART;VALUE=DATE:{}\r\n",
+                format_date(&event.dtstart)
+            ));
             if let Some(end) = &event.dtend {
                 ical.push_str(&format!("DTEND;VALUE=DATE:{}\r\n", format_date(end)));
             }
@@ -916,7 +1060,10 @@ impl CalDAVClient {
         }
 
         if let Some(description) = &event.description {
-            ical.push_str(&format!("DESCRIPTION:{}\r\n", self.escape_ical_text(description)));
+            ical.push_str(&format!(
+                "DESCRIPTION:{}\r\n",
+                self.escape_ical_text(description)
+            ));
         }
 
         if let Some(location) = &event.location {
@@ -951,7 +1098,10 @@ impl CalDAVClient {
         // Categories
         if !event.categories.is_empty() {
             let categories = event.categories.join(",");
-            ical.push_str(&format!("CATEGORIES:{}\r\n", self.escape_ical_text(&categories)));
+            ical.push_str(&format!(
+                "CATEGORIES:{}\r\n",
+                self.escape_ical_text(&categories)
+            ));
         }
 
         // Creation and modification times
@@ -989,9 +1139,15 @@ impl CalDAVClient {
             }
 
             if let Some(description) = &alarm.description {
-                ical.push_str(&format!("DESCRIPTION:{}\r\n", self.escape_ical_text(description)));
+                ical.push_str(&format!(
+                    "DESCRIPTION:{}\r\n",
+                    self.escape_ical_text(description)
+                ));
             } else if let Some(summary) = &event.summary {
-                ical.push_str(&format!("DESCRIPTION:{}\r\n", self.escape_ical_text(summary)));
+                ical.push_str(&format!(
+                    "DESCRIPTION:{}\r\n",
+                    self.escape_ical_text(summary)
+                ));
             }
 
             ical.push_str("END:VALARM\r\n");
@@ -1005,7 +1161,10 @@ impl CalDAVClient {
         // Exception dates (EXDATE)
         for exception_date in &event.exdate {
             if event.all_day {
-                ical.push_str(&format!("EXDATE;VALUE=DATE:{}\r\n", format_date(exception_date)));
+                ical.push_str(&format!(
+                    "EXDATE;VALUE=DATE:{}\r\n",
+                    format_date(exception_date)
+                ));
             } else {
                 ical.push_str(&format!("EXDATE:{}\r\n", format_datetime(exception_date)));
             }
@@ -1027,13 +1186,21 @@ impl CalDAVClient {
     }
 
     /// Delete an event from a CalDAV calendar
-    pub async fn delete_event(&self, calendar_path: &str, event_href: &str) -> Result<(), CalDAVError> {
+    pub async fn delete_event(
+        &self,
+        calendar_path: &str,
+        event_href: &str,
+    ) -> Result<(), CalDAVError> {
         // Construct the full URL for the event
         let full_url = if event_href.starts_with("http") {
             event_href.to_string()
         } else if event_href.starts_with("/dav.php") {
             // Event href is already a full path, combine with base server URL (without /dav.php)
-            let base_url = self.config.server_url.trim_end_matches('/').trim_end_matches("/dav.php");
+            let base_url = self
+                .config
+                .server_url
+                .trim_end_matches('/')
+                .trim_end_matches("/dav.php");
             format!("{}{}", base_url, event_href)
         } else {
             // Event href is just a filename, combine with calendar path
@@ -1042,7 +1209,12 @@ impl CalDAVClient {
             } else {
                 calendar_path
             };
-            format!("{}/dav.php{}/{}", self.config.server_url.trim_end_matches('/'), clean_path, event_href)
+            format!(
+                "{}/dav.php{}/{}",
+                self.config.server_url.trim_end_matches('/'),
+                clean_path,
+                event_href
+            )
         };
 
         println!("Deleting event at: {}", full_url);
@@ -1051,9 +1223,13 @@ impl CalDAVClient {
         let _lock = CALDAV_HTTP_MUTEX.lock().await;
         println!("📡 Lock acquired, sending DELETE request to CalDAV server...");
 
-        let response = self.http_client
+        let response = self
+            .http_client
             .delete(&full_url)
-            .header("Authorization", format!("Basic {}", self.config.get_basic_auth()))
+            .header(
+                "Authorization",
+                format!("Basic {}", self.config.get_basic_auth()),
+            )
             .send()
             .await
             .map_err(|e| CalDAVError::ParseError(e.to_string()))?;
@@ -1103,8 +1279,11 @@ mod tests {
     /// This test requires a valid .env file and a calendar with some events
     #[tokio::test]
     async fn test_fetch_calendar_events() {
-        let config = CalDAVConfig::from_env()
-            .expect("Failed to load CalDAV config from environment");
+        let config = CalDAVConfig::new(
+            "https://example.com".to_string(),
+            "test_user".to_string(),
+            "test_password".to_string(),
+        );
 
         let client = CalDAVClient::new(config);
 
@@ -1147,7 +1326,10 @@ mod tests {
                         for event in &events {
                             assert!(!event.uid.is_empty(), "Event UID should not be empty");
                             // All events should have a start time
-                            assert!(event.dtstart > DateTime::from_timestamp(0, 0).unwrap(), "Event should have valid start time");
+                            assert!(
+                                event.dtstart > DateTime::from_timestamp(0, 0).unwrap(),
+                                "Event should have valid start time"
+                            );
                         }
 
                         println!("\n✓ Calendar event fetching test passed!");
@@ -1192,11 +1374,11 @@ END:VCALENDAR"#;
             username: "test".to_string(),
             password: "test".to_string(),
             calendar_path: None,
-            tasks_path: None,
         };
 
         let client = CalDAVClient::new(config);
-        let events = client.parse_ical_data(sample_ical)
+        let events = client
+            .parse_ical_data(sample_ical)
             .expect("Should be able to parse sample iCal data");
 
         assert_eq!(events.len(), 1);
@@ -1223,23 +1405,25 @@ END:VCALENDAR"#;
             username: "test".to_string(),
             password: "test".to_string(),
             calendar_path: None,
-            tasks_path: None,
         };
 
         let client = CalDAVClient::new(config);
 
         // Test UTC format
-        let dt1 = client.parse_datetime("20231225T120000Z", None)
+        let dt1 = client
+            .parse_datetime("20231225T120000Z", None)
             .expect("Should parse UTC datetime");
         println!("Parsed UTC datetime: {}", dt1);
 
         // Test date-only format (should be treated as all-day)
-        let dt2 = client.parse_datetime("20231225", None)
+        let dt2 = client
+            .parse_datetime("20231225", None)
             .expect("Should parse date-only");
         println!("Parsed date-only: {}", dt2);
 
         // Test local format
-        let dt3 = client.parse_datetime("20231225T120000", None)
+        let dt3 = client
+            .parse_datetime("20231225T120000", None)
             .expect("Should parse local datetime");
         println!("Parsed local datetime: {}", dt3);
 
@@ -1259,5 +1443,4 @@ END:VCALENDAR"#;
 
         println!("✓ Event enum tests passed!");
     }
-
 }

backend/src/config.rs

@@ -1,6 +1,6 @@
+use base64::prelude::*;
 use serde::{Deserialize, Serialize};
 use std::env;
-use base64::prelude::*;
 
 /// Configuration for CalDAV server connection and authentication.
 ///
@@ -139,7 +139,6 @@ mod tests {
             username: "testuser".to_string(),
             password: "testpass".to_string(),
             calendar_path: None,
-            tasks_path: None,
         };
 
         let auth = config.get_basic_auth();
@@ -161,7 +160,7 @@ mod tests {
         let config = CalDAVConfig::new(
             "https://example.com".to_string(),
             "test_user".to_string(),
-            "test_password".to_string()
+            "test_password".to_string(),
         );
 
         println!("Testing authentication to: {}", config.server_url);
@@ -172,7 +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
@@ -190,9 +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"
         );
 
@@ -210,7 +212,7 @@ mod tests {
         let config = CalDAVConfig::new(
             "https://example.com".to_string(),
             "test_user".to_string(),
-            "test_password".to_string()
+            "test_password".to_string(),
         );
 
         let client = reqwest::Client::new();
@@ -227,8 +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")
@@ -251,7 +259,10 @@ 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/handlers.rs

@@ -4,7 +4,7 @@ mod calendar;
 mod events;
 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 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()))
 }
@@ -43,7 +48,9 @@ pub async fn login(
 
     // 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()));
+        return Err(ApiError::BadRequest(
+            "Username, password, and server URL are required".to_string(),
+        ));
     }
 
     println!("✅ Input validation passed");
@@ -55,14 +62,17 @@ pub async fn login(
     let config = CalDAVConfig::new(
         request.server_url.clone(),
         request.username.clone(),
-        request.password.clone()
+        request.password.clone(),
     );
     let client = CalDAVClient::new(config);
-    client.discover_calendars()
+    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)?;
+    let token = state
+        .auth_service
+        .generate_token(&request.username, &request.server_url)?;
 
     println!("🔗 Created CalDAV client, attempting to discover calendars...");
 
@@ -91,23 +101,30 @@ pub async fn get_user_info(
     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());
+    println!(
+        "✅ Authentication successful! Found {} calendars",
+        calendar_paths.len()
+    );
 
-    let calendars: Vec<CalendarInfo> = calendar_paths.iter().map(|path| {
-        CalendarInfo {
+    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,
@@ -126,10 +143,9 @@ fn generate_calendar_color(path: &str) -> String {
 
     // 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()

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};
 
@@ -30,11 +38,14 @@ pub async fn get_calendar_events(
     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)))?;
 
@@ -54,7 +65,10 @@ 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
             }
         }
@@ -82,11 +96,14 @@ pub async fn refresh_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);
 
     // 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)))?;
 
@@ -101,13 +118,20 @@ pub async fn refresh_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 {
@@ -123,7 +147,10 @@ async fn fetch_event_by_href(client: &CalDAVClient, calendar_path: &str, event_h
     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 {
@@ -146,23 +173,31 @@ 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 {
@@ -172,12 +207,26 @@ pub async fn delete_event(
                         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");
 
@@ -192,9 +241,12 @@ pub async fn delete_event(
                     // 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");
 
@@ -206,51 +258,77 @@ 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 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 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,
@@ -258,15 +336,18 @@ pub async fn delete_event(
                         }))
                     }
                 } 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)))?;
 
@@ -283,8 +364,10 @@ 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)?;
@@ -296,11 +379,15 @@ pub async fn create_event(
     }
 
     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())
@@ -402,7 +501,8 @@ pub async fn create_event(
 
                 // 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
+                    let selected_days: Vec<&str> = request
+                        .recurrence_days
                         .iter()
                         .enumerate()
                         .filter_map(|(i, &selected)| {
@@ -416,20 +516,20 @@ pub async fn create_event(
                                     5 => "FR", // Friday
                                     6 => "SA", // Saturday
                                     _ => return None,
-                            })
-                        } else {
-                            None
-                        }
-                    })
-                    .collect();
+                                })
+                            } else {
+                                None
+                            }
+                        })
+                        .collect();
 
-                if !selected_days.is_empty() {
-                    rrule = format!("{};BYDAY={}", rrule, selected_days.join(","));
+                    if !selected_days.is_empty() {
+                        rrule = format!("{};BYDAY={}", rrule, selected_days.join(","));
+                    }
                 }
-            }
 
                 Some(rrule)
-            },
+            }
             "MONTHLY" => Some("FREQ=MONTHLY".to_string()),
             "YEARLY" => Some("FREQ=YEARLY".to_string()),
             _ => None,
@@ -439,9 +539,21 @@ pub async fn create_event(
     // 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;
@@ -456,41 +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,
@@ -520,18 +644,23 @@ pub async fn update_event(
     }
 
     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)))?
     };
@@ -544,7 +673,10 @@ pub async fn update_event(
                 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;
@@ -553,9 +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;
             }
         }
@@ -565,23 +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
@@ -601,8 +751,12 @@ 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)))?;
 
@@ -614,8 +768,12 @@ 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")
@@ -623,7 +781,8 @@ fn parse_event_datetime(date_str: &str, time_str: &str, all_day: bool) -> Result
 
     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 {

backend/src/handlers/series.rs

@@ -1,14 +1,16 @@
-use axum::{
-    extract::State,
-    http::HeaderMap,
-    response::Json,
-};
-use std::sync::Arc;
+use axum::{extract::State, http::HeaderMap, response::Json};
 use chrono::TimeZone;
+use std::sync::Arc;
 
-use crate::{AppState, models::{ApiError, CreateEventSeriesRequest, CreateEventSeriesResponse, UpdateEventSeriesRequest, UpdateEventSeriesResponse, DeleteEventSeriesRequest, DeleteEventSeriesResponse}};
 use crate::calendar::CalDAVClient;
-use calendar_models::{VEvent, EventStatus, EventClass};
+use crate::{
+    models::{
+        ApiError, CreateEventSeriesRequest, CreateEventSeriesResponse, DeleteEventSeriesRequest,
+        DeleteEventSeriesResponse, UpdateEventSeriesRequest, UpdateEventSeriesResponse,
+    },
+    AppState,
+};
+use calendar_models::{EventClass, EventStatus, VEvent};
 
 use super::auth::{extract_bearer_token, extract_password_header};
 
@@ -18,8 +20,10 @@ pub async fn create_event_series(
     headers: HeaderMap,
     Json(request): Json<CreateEventSeriesRequest>,
 ) -> Result<Json<CreateEventSeriesResponse>, ApiError> {
-    println!("📝 Create event series request received: title='{}', recurrence='{}', all_day={}", 
-             request.title, request.recurrence, request.all_day);
+    println!(
+        "📝 Create event series request received: title='{}', recurrence='{}', all_day={}",
+        request.title, request.recurrence, request.all_day
+    );
 
     // Extract and verify token
     let token = extract_bearer_token(&headers)?;
@@ -31,11 +35,15 @@ pub async fn create_event_series(
     }
 
     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(),
+        ));
     }
 
     if request.recurrence == "none" {
-        return Err(ApiError::BadRequest("Use regular create endpoint for non-recurring events".to_string()));
+        return Err(ApiError::BadRequest(
+            "Use regular create endpoint for non-recurring events".to_string(),
+        ));
     }
 
     // Validate recurrence type - handle both simple strings and RRULE strings
@@ -50,7 +58,9 @@ pub async fn create_event_series(
         } else if request.recurrence.contains("FREQ=YEARLY") {
             "yearly"
         } else {
-            return Err(ApiError::BadRequest("Invalid RRULE frequency. Must be DAILY, WEEKLY, MONTHLY, or YEARLY".to_string()));
+            return Err(ApiError::BadRequest(
+                "Invalid RRULE frequency. Must be DAILY, WEEKLY, MONTHLY, or YEARLY".to_string(),
+            ));
         }
     } else {
         // Handle simple strings
@@ -60,12 +70,19 @@ pub async fn create_event_series(
             "weekly" => "weekly",
             "monthly" => "monthly",
             "yearly" => "yearly",
-            _ => return Err(ApiError::BadRequest("Invalid recurrence type. Must be daily, weekly, monthly, or yearly".to_string())),
+            _ => {
+                return Err(ApiError::BadRequest(
+                    "Invalid recurrence type. Must be daily, weekly, monthly, or yearly"
+                        .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
@@ -73,12 +90,15 @@ pub async fn create_event_series(
         path.clone()
     } 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()
@@ -87,37 +107,47 @@ pub async fn create_event_series(
     println!("📅 Using calendar path: {}", calendar_path);
 
     // Parse datetime components
-    let start_date = chrono::NaiveDate::parse_from_str(&request.start_date, "%Y-%m-%d")
-        .map_err(|_| ApiError::BadRequest("Invalid start_date format. Expected YYYY-MM-DD".to_string()))?;
+    let start_date =
+        chrono::NaiveDate::parse_from_str(&request.start_date, "%Y-%m-%d").map_err(|_| {
+            ApiError::BadRequest("Invalid start_date format. Expected YYYY-MM-DD".to_string())
+        })?;
 
     let (start_datetime, end_datetime) = if request.all_day {
         // For all-day events, use the dates as-is
-        let start_dt = start_date.and_hms_opt(0, 0, 0)
+        let start_dt = start_date
+            .and_hms_opt(0, 0, 0)
             .ok_or_else(|| ApiError::BadRequest("Invalid start date".to_string()))?;
 
         let end_date = if !request.end_date.is_empty() {
-            chrono::NaiveDate::parse_from_str(&request.end_date, "%Y-%m-%d")
-                .map_err(|_| ApiError::BadRequest("Invalid end_date format. Expected YYYY-MM-DD".to_string()))?
+            chrono::NaiveDate::parse_from_str(&request.end_date, "%Y-%m-%d").map_err(|_| {
+                ApiError::BadRequest("Invalid end_date format. Expected YYYY-MM-DD".to_string())
+            })?
         } else {
             start_date
         };
 
-        let end_dt = end_date.and_hms_opt(23, 59, 59)
+        let end_dt = end_date
+            .and_hms_opt(23, 59, 59)
             .ok_or_else(|| ApiError::BadRequest("Invalid end date".to_string()))?;
 
-        (chrono::Utc.from_utc_datetime(&start_dt), chrono::Utc.from_utc_datetime(&end_dt))
+        (
+            chrono::Utc.from_utc_datetime(&start_dt),
+            chrono::Utc.from_utc_datetime(&end_dt),
+        )
     } else {
         // Parse times for timed events
         let start_time = if !request.start_time.is_empty() {
-            chrono::NaiveTime::parse_from_str(&request.start_time, "%H:%M")
-                .map_err(|_| ApiError::BadRequest("Invalid start_time format. Expected HH:MM".to_string()))?
+            chrono::NaiveTime::parse_from_str(&request.start_time, "%H:%M").map_err(|_| {
+                ApiError::BadRequest("Invalid start_time format. Expected HH:MM".to_string())
+            })?
         } else {
             chrono::NaiveTime::from_hms_opt(9, 0, 0).unwrap() // Default to 9 AM
         };
 
         let end_time = if !request.end_time.is_empty() {
-            chrono::NaiveTime::parse_from_str(&request.end_time, "%H:%M")
-                .map_err(|_| ApiError::BadRequest("Invalid end_time format. Expected HH:MM".to_string()))?
+            chrono::NaiveTime::parse_from_str(&request.end_time, "%H:%M").map_err(|_| {
+                ApiError::BadRequest("Invalid end_time format. Expected HH:MM".to_string())
+            })?
         } else {
             chrono::NaiveTime::from_hms_opt(10, 0, 0).unwrap() // Default to 1 hour duration
         };
@@ -125,13 +155,18 @@ pub async fn create_event_series(
         let start_dt = start_date.and_time(start_time);
         let end_dt = if !request.end_date.is_empty() {
             let end_date = chrono::NaiveDate::parse_from_str(&request.end_date, "%Y-%m-%d")
-                .map_err(|_| ApiError::BadRequest("Invalid end_date format. Expected YYYY-MM-DD".to_string()))?;
+                .map_err(|_| {
+                    ApiError::BadRequest("Invalid end_date format. Expected YYYY-MM-DD".to_string())
+                })?;
             end_date.and_time(end_time)
         } else {
             start_date.and_time(end_time)
         };
 
-        (chrono::Utc.from_utc_datetime(&start_dt), chrono::Utc.from_utc_datetime(&end_dt))
+        (
+            chrono::Utc.from_utc_datetime(&start_dt),
+            chrono::Utc.from_utc_datetime(&end_dt),
+        )
     };
 
     // Generate a unique UID for the series
@@ -140,9 +175,21 @@ pub async fn create_event_series(
     // Create the VEvent for the series
     let mut event = VEvent::new(uid.clone(), 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.clone()) };
-    event.location = if request.location.trim().is_empty() { None } else { Some(request.location.clone()) };
+    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.clone())
+    };
+    event.location = if request.location.trim().is_empty() {
+        None
+    } else {
+        Some(request.location.clone())
+    };
 
     // Set event status
     event.status = Some(match request.status.to_lowercase().as_str() {
@@ -171,13 +218,16 @@ pub async fn create_event_series(
     };
     event.rrule = Some(rrule);
 
-
     // 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 series: {}", e)))?;
 
-    println!("✅ Event series created successfully with UID: {}, href: {}", uid, event_href);
+    println!(
+        "✅ Event series created successfully with UID: {}, href: {}",
+        uid, event_href
+    );
 
     Ok(Json(CreateEventSeriesResponse {
         success: true,
@@ -194,8 +244,10 @@ pub async fn update_event_series(
     headers: HeaderMap,
     Json(request): Json<UpdateEventSeriesRequest>,
 ) -> Result<Json<UpdateEventSeriesResponse>, ApiError> {
-    println!("🔄 Update event series request received: series_uid='{}', update_scope='{}'", 
-             request.series_uid, request.update_scope);
+    println!(
+        "🔄 Update event series request received: series_uid='{}', update_scope='{}'",
+        request.series_uid, request.update_scope
+    );
 
     // Extract and verify token
     let token = extract_bearer_token(&headers)?;
@@ -211,13 +263,20 @@ pub async fn update_event_series(
     }
 
     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(),
+        ));
     }
 
     // Validate update scope
     match request.update_scope.as_str() {
-        "this_only" | "this_and_future" | "all_in_series" => {},
-        _ => return Err(ApiError::BadRequest("Invalid update_scope. Must be: this_only, this_and_future, or all_in_series".to_string())),
+        "this_only" | "this_and_future" | "all_in_series" => {}
+        _ => {
+            return Err(ApiError::BadRequest(
+                "Invalid update_scope. Must be: this_only, this_and_future, or all_in_series"
+                    .to_string(),
+            ))
+        }
     }
 
     // Validate recurrence type - handle both simple strings and RRULE strings
@@ -232,7 +291,9 @@ pub async fn update_event_series(
         } else if request.recurrence.contains("FREQ=YEARLY") {
             "yearly"
         } else {
-            return Err(ApiError::BadRequest("Invalid RRULE frequency. Must be DAILY, WEEKLY, MONTHLY, or YEARLY".to_string()));
+            return Err(ApiError::BadRequest(
+                "Invalid RRULE frequency. Must be DAILY, WEEKLY, MONTHLY, or YEARLY".to_string(),
+            ));
         }
     } else {
         // Handle simple strings
@@ -242,12 +303,19 @@ pub async fn update_event_series(
             "weekly" => "weekly",
             "monthly" => "monthly",
             "yearly" => "yearly",
-            _ => return Err(ApiError::BadRequest("Invalid recurrence type. Must be daily, weekly, monthly, or yearly".to_string())),
+            _ => {
+                return Err(ApiError::BadRequest(
+                    "Invalid recurrence type. Must be daily, weekly, monthly, or yearly"
+                        .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);
 
     // Use the parsed frequency for further processing (avoiding unused variable warning)
@@ -257,13 +325,16 @@ pub async fn update_event_series(
     let calendar_paths = if let Some(ref 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)))?
     };
 
     if calendar_paths.is_empty() {
-        return Err(ApiError::BadRequest("No calendars available for event update".to_string()));
+        return Err(ApiError::BadRequest(
+            "No calendars available for event update".to_string(),
+        ));
     }
 
     // Find the series event across all specified calendars
@@ -278,34 +349,46 @@ pub async fn update_event_series(
         }
     }
 
-    let mut existing_event = existing_event
-        .ok_or_else(|| ApiError::NotFound(format!("Event series with UID '{}' not found", request.series_uid)))?;
+    let mut existing_event = existing_event.ok_or_else(|| {
+        ApiError::NotFound(format!(
+            "Event series with UID '{}' not found",
+            request.series_uid
+        ))
+    })?;
 
     println!("📅 Found series event in calendar: {}", calendar_path);
-    println!("📅 Event details: UID={}, summary={:?}, dtstart={}", 
-             existing_event.uid, existing_event.summary, existing_event.dtstart);
+    println!(
+        "📅 Event details: UID={}, summary={:?}, dtstart={}",
+        existing_event.uid, existing_event.summary, existing_event.dtstart
+    );
 
     // Parse datetime components for the update
     let original_start_date = existing_event.dtstart.date_naive();
 
     // For "this_and_future" and "this_only" updates, use the occurrence date for the modified event
     // For "all_in_series" updates, preserve the original series start date
-    let start_date = if (request.update_scope == "this_and_future" || request.update_scope == "this_only") && request.occurrence_date.is_some() {
+    let start_date = if (request.update_scope == "this_and_future"
+        || request.update_scope == "this_only")
+        && request.occurrence_date.is_some()
+    {
         let occurrence_date_str = request.occurrence_date.as_ref().unwrap();
-        chrono::NaiveDate::parse_from_str(occurrence_date_str, "%Y-%m-%d")
-            .map_err(|_| ApiError::BadRequest("Invalid occurrence_date format. Expected YYYY-MM-DD".to_string()))?
+        chrono::NaiveDate::parse_from_str(occurrence_date_str, "%Y-%m-%d").map_err(|_| {
+            ApiError::BadRequest("Invalid occurrence_date format. Expected YYYY-MM-DD".to_string())
+        })?
     } else {
         original_start_date
     };
 
     let (start_datetime, end_datetime) = if request.all_day {
-        let start_dt = start_date.and_hms_opt(0, 0, 0)
+        let start_dt = start_date
+            .and_hms_opt(0, 0, 0)
             .ok_or_else(|| ApiError::BadRequest("Invalid start date".to_string()))?;
 
         // For all-day events, also preserve the original date pattern
         let end_date = if !request.end_date.is_empty() {
             // Calculate the duration from the original event
-            let original_duration_days = existing_event.dtend
+            let original_duration_days = existing_event
+                .dtend
                 .map(|end| (end.date_naive() - existing_event.dtstart.date_naive()).num_days())
                 .unwrap_or(0);
             start_date + chrono::Duration::days(original_duration_days)
@@ -313,25 +396,32 @@ pub async fn update_event_series(
             start_date
         };
 
-        let end_dt = end_date.and_hms_opt(23, 59, 59)
+        let end_dt = end_date
+            .and_hms_opt(23, 59, 59)
             .ok_or_else(|| ApiError::BadRequest("Invalid end date".to_string()))?;
 
-        (chrono::Utc.from_utc_datetime(&start_dt), chrono::Utc.from_utc_datetime(&end_dt))
+        (
+            chrono::Utc.from_utc_datetime(&start_dt),
+            chrono::Utc.from_utc_datetime(&end_dt),
+        )
     } else {
         let start_time = if !request.start_time.is_empty() {
-            chrono::NaiveTime::parse_from_str(&request.start_time, "%H:%M")
-                .map_err(|_| ApiError::BadRequest("Invalid start_time format. Expected HH:MM".to_string()))?
+            chrono::NaiveTime::parse_from_str(&request.start_time, "%H:%M").map_err(|_| {
+                ApiError::BadRequest("Invalid start_time format. Expected HH:MM".to_string())
+            })?
         } else {
             existing_event.dtstart.time()
         };
 
         let end_time = if !request.end_time.is_empty() {
-            chrono::NaiveTime::parse_from_str(&request.end_time, "%H:%M")
-                .map_err(|_| ApiError::BadRequest("Invalid end_time format. Expected HH:MM".to_string()))?
+            chrono::NaiveTime::parse_from_str(&request.end_time, "%H:%M").map_err(|_| {
+                ApiError::BadRequest("Invalid end_time format. Expected HH:MM".to_string())
+            })?
         } else {
-            existing_event.dtend.map(|dt| dt.time()).unwrap_or_else(|| {
-                existing_event.dtstart.time() + chrono::Duration::hours(1)
-            })
+            existing_event
+                .dtend
+                .map(|dt| dt.time())
+                .unwrap_or_else(|| existing_event.dtstart.time() + chrono::Duration::hours(1))
         };
 
         let start_dt = start_date.and_time(start_time);
@@ -340,13 +430,17 @@ pub async fn update_event_series(
             start_date.and_time(end_time)
         } else {
             // Calculate end time based on original duration
-            let original_duration = existing_event.dtend
+            let original_duration = existing_event
+                .dtend
                 .map(|end| end - existing_event.dtstart)
                 .unwrap_or_else(|| chrono::Duration::hours(1));
             (chrono::Utc.from_utc_datetime(&start_dt) + original_duration).naive_utc()
         };
 
-        (chrono::Utc.from_utc_datetime(&start_dt), chrono::Utc.from_utc_datetime(&end_dt))
+        (
+            chrono::Utc.from_utc_datetime(&start_dt),
+            chrono::Utc.from_utc_datetime(&end_dt),
+        )
     };
 
     // Handle different update scopes
@@ -354,39 +448,73 @@ pub async fn update_event_series(
         "all_in_series" => {
             // Update the entire series - modify the master event
             update_entire_series(&mut existing_event, &request, start_datetime, end_datetime)?
-        },
+        }
         "this_and_future" => {
             // Split the series: keep past occurrences, create new series from occurrence date
-            update_this_and_future(&mut existing_event, &request, start_datetime, end_datetime, &client, &calendar_path).await?
-        },
+            update_this_and_future(
+                &mut existing_event,
+                &request,
+                start_datetime,
+                end_datetime,
+                &client,
+                &calendar_path,
+            )
+            .await?
+        }
         "this_only" => {
             // Create exception for single occurrence, keep original series
-            let event_href = existing_event.href.as_ref()
-                .ok_or_else(|| ApiError::Internal("Event missing href for single occurrence update".to_string()))?
+            let event_href = existing_event
+                .href
+                .as_ref()
+                .ok_or_else(|| {
+                    ApiError::Internal(
+                        "Event missing href for single occurrence update".to_string(),
+                    )
+                })?
                 .clone();
-            update_single_occurrence(&mut existing_event, &request, start_datetime, end_datetime, &client, &calendar_path, &event_href).await?
-        },
+            update_single_occurrence(
+                &mut existing_event,
+                &request,
+                start_datetime,
+                end_datetime,
+                &client,
+                &calendar_path,
+                &event_href,
+            )
+            .await?
+        }
         _ => unreachable!(), // Already validated above
     };
 
     // Update the event on the CalDAV server using the original event's href
     println!("📤 Updating event on CalDAV server...");
-    let event_href = existing_event.href.as_ref()
+    let event_href = existing_event
+        .href
+        .as_ref()
         .ok_or_else(|| ApiError::Internal("Event missing href for update".to_string()))?;
     println!("📤 Using event href: {}", event_href);
     println!("📤 Calendar path: {}", calendar_path);
 
-    match client.update_event(&calendar_path, &updated_event, event_href).await {
+    match client
+        .update_event(&calendar_path, &updated_event, event_href)
+        .await
+    {
         Ok(_) => {
             println!("✅ CalDAV update completed successfully");
         }
         Err(e) => {
             println!("❌ CalDAV update failed: {}", e);
-            return Err(ApiError::Internal(format!("Failed to update event series: {}", e)));
+            return Err(ApiError::Internal(format!(
+                "Failed to update event series: {}",
+                e
+            )));
         }
     }
 
-    println!("✅ Event series updated successfully with UID: {}", request.series_uid);
+    println!(
+        "✅ Event series updated successfully with UID: {}",
+        request.series_uid
+    );
 
     Ok(Json(UpdateEventSeriesResponse {
         success: true,
@@ -402,8 +530,10 @@ pub async fn delete_event_series(
     headers: HeaderMap,
     Json(request): Json<DeleteEventSeriesRequest>,
 ) -> Result<Json<DeleteEventSeriesResponse>, ApiError> {
-    println!("🗑️ Delete event series request received: series_uid='{}', delete_scope='{}'", 
-             request.series_uid, request.delete_scope);
+    println!(
+        "🗑️ Delete event series request received: series_uid='{}', delete_scope='{}'",
+        request.series_uid, request.delete_scope
+    );
 
     // Extract and verify token
     let token = extract_bearer_token(&headers)?;
@@ -415,7 +545,9 @@ pub async fn delete_event_series(
     }
 
     if request.calendar_path.trim().is_empty() {
-        return Err(ApiError::BadRequest("Calendar path is required".to_string()));
+        return Err(ApiError::BadRequest(
+            "Calendar path is required".to_string(),
+        ));
     }
 
     if request.event_href.trim().is_empty() {
@@ -424,12 +556,19 @@ pub async fn delete_event_series(
 
     // Validate delete scope
     match request.delete_scope.as_str() {
-        "this_only" | "this_and_future" | "all_in_series" => {},
-        _ => return Err(ApiError::BadRequest("Invalid delete_scope. Must be: this_only, this_and_future, or all_in_series".to_string())),
+        "this_only" | "this_and_future" | "all_in_series" => {}
+        _ => {
+            return Err(ApiError::BadRequest(
+                "Invalid delete_scope. Must be: this_only, this_and_future, or all_in_series"
+                    .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);
 
     // Handle different deletion scopes
@@ -437,19 +576,22 @@ pub async fn delete_event_series(
         "all_in_series" => {
             // Delete the entire series - simply delete the event
             delete_entire_series(&client, &request).await?
-        },
+        }
         "this_and_future" => {
             // Modify RRULE to end before this occurrence
             delete_this_and_future(&client, &request).await?
-        },
+        }
         "this_only" => {
             // Add EXDATE for single occurrence
             delete_single_occurrence(&client, &request).await?
-        },
+        }
         _ => unreachable!(), // Already validated above
     };
 
-    println!("✅ Event series deletion completed with {} occurrences affected", occurrences_affected);
+    println!(
+        "✅ Event series deletion completed with {} occurrences affected",
+        occurrences_affected
+    );
 
     Ok(Json(DeleteEventSeriesResponse {
         success: true,
@@ -460,8 +602,10 @@ pub async fn delete_event_series(
 
 // Helper functions
 
-
-fn build_series_rrule_with_freq(request: &CreateEventSeriesRequest, freq: &str) -> Result<String, ApiError> {
+fn build_series_rrule_with_freq(
+    request: &CreateEventSeriesRequest,
+    freq: &str,
+) -> Result<String, ApiError> {
     let mut rrule_parts = Vec::new();
 
     // Add frequency
@@ -470,7 +614,11 @@ fn build_series_rrule_with_freq(request: &CreateEventSeriesRequest, freq: &str)
         "weekly" => rrule_parts.push("FREQ=WEEKLY".to_string()),
         "monthly" => rrule_parts.push("FREQ=MONTHLY".to_string()),
         "yearly" => rrule_parts.push("FREQ=YEARLY".to_string()),
-        _ => return Err(ApiError::BadRequest("Invalid recurrence frequency".to_string())),
+        _ => {
+            return Err(ApiError::BadRequest(
+                "Invalid recurrence frequency".to_string(),
+            ))
+        }
     }
 
     // Add interval if specified and greater than 1
@@ -482,7 +630,8 @@ fn build_series_rrule_with_freq(request: &CreateEventSeriesRequest, freq: &str)
 
     // Handle weekly recurrence with specific days (BYDAY)
     if freq == "weekly" && request.recurrence_days.len() == 7 {
-        let selected_days: Vec<&str> = request.recurrence_days
+        let selected_days: Vec<&str> = request
+            .recurrence_days
             .iter()
             .enumerate()
             .filter_map(|(i, &selected)| {
@@ -513,12 +662,17 @@ fn build_series_rrule_with_freq(request: &CreateEventSeriesRequest, freq: &str)
         // Parse the end date and convert to RRULE format (YYYYMMDDTHHMMSSZ)
         match chrono::NaiveDate::parse_from_str(end_date, "%Y-%m-%d") {
             Ok(date) => {
-                let end_datetime = date.and_hms_opt(23, 59, 59)
+                let end_datetime = date
+                    .and_hms_opt(23, 59, 59)
                     .ok_or_else(|| ApiError::BadRequest("Invalid end date".to_string()))?;
                 let utc_end = chrono::Utc.from_utc_datetime(&end_datetime);
                 rrule_parts.push(format!("UNTIL={}", utc_end.format("%Y%m%dT%H%M%SZ")));
-            },
-            Err(_) => return Err(ApiError::BadRequest("Invalid recurrence_end_date format. Expected YYYY-MM-DD".to_string())),
+            }
+            Err(_) => {
+                return Err(ApiError::BadRequest(
+                    "Invalid recurrence_end_date format. Expected YYYY-MM-DD".to_string(),
+                ))
+            }
         }
     } else if let Some(count) = request.recurrence_count {
         if count > 0 {
@@ -543,17 +697,17 @@ fn update_entire_series(
     updated_event.dtstart = start_datetime;
     updated_event.dtend = Some(end_datetime);
     updated_event.summary = if request.title.trim().is_empty() {
-        existing_event.summary.clone()  // Keep original if empty
+        existing_event.summary.clone() // Keep original if empty
     } else {
         Some(request.title.clone())
     };
     updated_event.description = if request.description.trim().is_empty() {
-        existing_event.description.clone()  // Keep original if empty
+        existing_event.description.clone() // Keep original if empty
     } else {
         Some(request.description.clone())
     };
     updated_event.location = if request.location.trim().is_empty() {
-        existing_event.location.clone()  // Keep original if empty
+        existing_event.location.clone() // Keep original if empty
     } else {
         Some(request.location.clone())
     };
@@ -641,30 +795,42 @@ async fn update_this_and_future(
     client: &CalDAVClient,
     calendar_path: &str,
 ) -> Result<(VEvent, u32), ApiError> {
-    
     // Clone the existing event to create the new series before modifying the RRULE of the
     // original, because we'd like to preserve the original UNTIL logic
     let mut new_series = existing_event.clone();
-    let occurrence_date = request.occurrence_date.as_ref()
-        .ok_or_else(|| ApiError::BadRequest("occurrence_date is required for this_and_future updates".to_string()))?;
+    let occurrence_date = request.occurrence_date.as_ref().ok_or_else(|| {
+        ApiError::BadRequest("occurrence_date is required for this_and_future updates".to_string())
+    })?;
 
     // Parse occurrence date
     let occurrence_date_parsed = chrono::NaiveDate::parse_from_str(occurrence_date, "%Y-%m-%d")
         .map_err(|_| ApiError::BadRequest("Invalid occurrence date format".to_string()))?;
 
     // Step 1: Add UNTIL to the original series to stop before the occurrence date
-    let until_datetime = occurrence_date_parsed.and_hms_opt(0, 0, 0)
+    let until_datetime = occurrence_date_parsed
+        .and_hms_opt(0, 0, 0)
         .ok_or_else(|| ApiError::BadRequest("Invalid occurrence date".to_string()))?;
     let utc_until = chrono::Utc.from_utc_datetime(&until_datetime);
 
     // Create modified RRULE with UNTIL clause for the original series
-    let original_rrule = existing_event.rrule.clone().unwrap_or_else(|| "FREQ=WEEKLY".to_string());
-    let parts: Vec<&str> = original_rrule.split(';').filter(|part| {
-        !part.starts_with("UNTIL=") && !part.starts_with("COUNT=")
-    }).collect();
+    let original_rrule = existing_event
+        .rrule
+        .clone()
+        .unwrap_or_else(|| "FREQ=WEEKLY".to_string());
+    let parts: Vec<&str> = original_rrule
+        .split(';')
+        .filter(|part| !part.starts_with("UNTIL=") && !part.starts_with("COUNT="))
+        .collect();
 
-    existing_event.rrule = Some(format!("{};UNTIL={}", parts.join(";"), utc_until.format("%Y%m%dT%H%M%SZ")));
-    println!("🔄 this_and_future: Updated original series RRULE: {:?}", existing_event.rrule);
+    existing_event.rrule = Some(format!(
+        "{};UNTIL={}",
+        parts.join(";"),
+        utc_until.format("%Y%m%dT%H%M%SZ")
+    ));
+    println!(
+        "🔄 this_and_future: Updated original series RRULE: {:?}",
+        existing_event.rrule
+    );
 
     // Step 2: Create a new series starting from the occurrence date with updated properties
     let new_series_uid = format!("series-{}", uuid::Uuid::new_v4());
@@ -673,9 +839,21 @@ async fn update_this_and_future(
     new_series.uid = new_series_uid.clone();
     new_series.dtstart = start_datetime;
     new_series.dtend = Some(end_datetime);
-    new_series.summary = if request.title.trim().is_empty() { None } else { Some(request.title.clone()) };
-    new_series.description = if request.description.trim().is_empty() { None } else { Some(request.description.clone()) };
-    new_series.location = if request.location.trim().is_empty() { None } else { Some(request.location.clone()) };
+    new_series.summary = if request.title.trim().is_empty() {
+        None
+    } else {
+        Some(request.title.clone())
+    };
+    new_series.description = if request.description.trim().is_empty() {
+        None
+    } else {
+        Some(request.description.clone())
+    };
+    new_series.location = if request.location.trim().is_empty() {
+        None
+    } else {
+        Some(request.location.clone())
+    };
 
     new_series.status = Some(match request.status.to_lowercase().as_str() {
         "tentative" => EventStatus::Tentative,
@@ -698,11 +876,18 @@ async fn update_this_and_future(
     new_series.last_modified = Some(now);
     new_series.href = None; // Will be set when created
 
-    println!("🔄 this_and_future: Creating new series with UID: {}", new_series_uid);
-    println!("🔄 this_and_future: New series RRULE: {:?}", new_series.rrule);
+    println!(
+        "🔄 this_and_future: Creating new series with UID: {}",
+        new_series_uid
+    );
+    println!(
+        "🔄 this_and_future: New series RRULE: {:?}",
+        new_series.rrule
+    );
 
     // Create the new series on CalDAV server
-    client.create_event(calendar_path, &new_series)
+    client
+        .create_event(calendar_path, &new_series)
         .await
         .map_err(|e| ApiError::Internal(format!("Failed to create new series: {}", e)))?;
 
@@ -727,12 +912,17 @@ async fn update_single_occurrence(
     // 2. Create a new exception event with RECURRENCE-ID pointing to the original occurrence
 
     // First, add EXDATE to the original series
-    let occurrence_date = request.occurrence_date.as_ref()
-        .ok_or_else(|| ApiError::BadRequest("occurrence_date is required for single occurrence updates".to_string()))?;
+    let occurrence_date = request.occurrence_date.as_ref().ok_or_else(|| {
+        ApiError::BadRequest(
+            "occurrence_date is required for single occurrence updates".to_string(),
+        )
+    })?;
 
     // Parse the occurrence date
-    let exception_date = chrono::NaiveDate::parse_from_str(occurrence_date, "%Y-%m-%d")
-        .map_err(|_| ApiError::BadRequest("Invalid occurrence date format. Expected YYYY-MM-DD".to_string()))?;
+    let exception_date =
+        chrono::NaiveDate::parse_from_str(occurrence_date, "%Y-%m-%d").map_err(|_| {
+            ApiError::BadRequest("Invalid occurrence date format. Expected YYYY-MM-DD".to_string())
+        })?;
 
     // Create the EXDATE datetime using the original event's time
     let original_time = existing_event.dtstart.time();
@@ -740,10 +930,19 @@ async fn update_single_occurrence(
     let exception_utc = chrono::Utc.from_utc_datetime(&exception_datetime);
 
     // Add the exception date to the original series
-    println!("📝 BEFORE adding EXDATE: existing_event.exdate = {:?}", existing_event.exdate);
+    println!(
+        "📝 BEFORE adding EXDATE: existing_event.exdate = {:?}",
+        existing_event.exdate
+    );
     existing_event.exdate.push(exception_utc);
-    println!("📝 AFTER adding EXDATE: existing_event.exdate = {:?}", existing_event.exdate);
-    println!("🚫 Added EXDATE for single occurrence modification: {}", exception_utc.format("%Y-%m-%d %H:%M:%S"));
+    println!(
+        "📝 AFTER adding EXDATE: existing_event.exdate = {:?}",
+        existing_event.exdate
+    );
+    println!(
+        "🚫 Added EXDATE for single occurrence modification: {}",
+        exception_utc.format("%Y-%m-%d %H:%M:%S")
+    );
 
     // Create exception event by cloning the existing event to preserve all metadata
     let mut exception_event = existing_event.clone();
@@ -755,17 +954,17 @@ async fn update_single_occurrence(
     exception_event.dtstart = start_datetime;
     exception_event.dtend = Some(end_datetime);
     exception_event.summary = if request.title.trim().is_empty() {
-        existing_event.summary.clone()  // Keep original if empty
+        existing_event.summary.clone() // Keep original if empty
     } else {
         Some(request.title.clone())
     };
     exception_event.description = if request.description.trim().is_empty() {
-        existing_event.description.clone()  // Keep original if empty
+        existing_event.description.clone() // Keep original if empty
     } else {
         Some(request.description.clone())
     };
     exception_event.location = if request.location.trim().is_empty() {
-        existing_event.location.clone()  // Keep original if empty
+        existing_event.location.clone() // Keep original if empty
     } else {
         Some(request.location.clone())
     };
@@ -801,10 +1000,14 @@ async fn update_single_occurrence(
     // Set calendar path for the exception event
     exception_event.calendar_path = Some(calendar_path.to_string());
 
-    println!("✨ Created exception event with RECURRENCE-ID: {}", exception_utc.format("%Y-%m-%d %H:%M:%S"));
+    println!(
+        "✨ Created exception event with RECURRENCE-ID: {}",
+        exception_utc.format("%Y-%m-%d %H:%M:%S")
+    );
 
     // Create the exception event as a new event (original series will be updated by main handler)
-    client.create_event(calendar_path, &exception_event)
+    client
+        .create_event(calendar_path, &exception_event)
         .await
         .map_err(|e| ApiError::Internal(format!("Failed to create exception event: {}", e)))?;
 
@@ -820,7 +1023,8 @@ async fn delete_entire_series(
     request: &DeleteEventSeriesRequest,
 ) -> Result<u32, ApiError> {
     // Simply delete the entire event from the CalDAV server
-    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 series: {}", e)))?;
 
@@ -835,10 +1039,13 @@ async fn delete_this_and_future(
 ) -> Result<u32, ApiError> {
     // Fetch the existing event to modify its RRULE
     let event_uid = request.series_uid.clone();
-    let existing_event = client.fetch_event_by_uid(&request.calendar_path, &event_uid)
+    let existing_event = client
+        .fetch_event_by_uid(&request.calendar_path, &event_uid)
         .await
         .map_err(|e| ApiError::Internal(format!("Failed to fetch event for modification: {}", e)))?
-        .ok_or_else(|| ApiError::NotFound(format!("Event series with UID '{}' not found", event_uid)))?;
+        .ok_or_else(|| {
+            ApiError::NotFound(format!("Event series with UID '{}' not found", event_uid))
+        })?;
 
     // If no occurrence_date is provided, delete the entire series
     let Some(occurrence_date) = &request.occurrence_date else {
@@ -846,12 +1053,17 @@ async fn delete_this_and_future(
     };
 
     // Parse occurrence date to set as UNTIL for the RRULE
-    let until_date = chrono::NaiveDate::parse_from_str(occurrence_date, "%Y-%m-%d")
-        .map_err(|_| ApiError::BadRequest("Invalid occurrence date format. Expected YYYY-MM-DD".to_string()))?;
+    let until_date =
+        chrono::NaiveDate::parse_from_str(occurrence_date, "%Y-%m-%d").map_err(|_| {
+            ApiError::BadRequest("Invalid occurrence date format. Expected YYYY-MM-DD".to_string())
+        })?;
 
     // Set UNTIL to the day before the occurrence to exclude it and all future occurrences
-    let until_datetime = until_date.pred_opt()
-        .ok_or_else(|| ApiError::BadRequest("Cannot delete from the first possible date".to_string()))?
+    let until_datetime = until_date
+        .pred_opt()
+        .ok_or_else(|| {
+            ApiError::BadRequest("Cannot delete from the first possible date".to_string())
+        })?
         .and_hms_opt(23, 59, 59)
         .ok_or_else(|| ApiError::BadRequest("Invalid date calculation".to_string()))?;
     let utc_until = chrono::Utc.from_utc_datetime(&until_datetime);
@@ -860,19 +1072,30 @@ async fn delete_this_and_future(
     let mut updated_event = existing_event;
     if let Some(rrule) = &updated_event.rrule {
         // Remove existing UNTIL or COUNT if present and add new UNTIL
-        let parts: Vec<&str> = rrule.split(';').filter(|part| {
-            !part.starts_with("UNTIL=") && !part.starts_with("COUNT=")
-        }).collect();
+        let parts: Vec<&str> = rrule
+            .split(';')
+            .filter(|part| !part.starts_with("UNTIL=") && !part.starts_with("COUNT="))
+            .collect();
 
-        updated_event.rrule = Some(format!("{};UNTIL={}", parts.join(";"), utc_until.format("%Y%m%dT%H%M%SZ")));
+        updated_event.rrule = Some(format!(
+            "{};UNTIL={}",
+            parts.join(";"),
+            utc_until.format("%Y%m%dT%H%M%SZ")
+        ));
     }
 
     // Update the event on the CalDAV server
-    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 series for deletion: {}", e)))?;
+        .map_err(|e| {
+            ApiError::Internal(format!("Failed to update event series for deletion: {}", e))
+        })?;
 
-    println!("🗑️ Series modified with UNTIL for this_and_future deletion: {}", utc_until.format("%Y-%m-%d"));
+    println!(
+        "🗑️ Series modified with UNTIL for this_and_future deletion: {}",
+        utc_until.format("%Y-%m-%d")
+    );
     Ok(1) // 1 series modified
 }
 
@@ -883,19 +1106,26 @@ async fn delete_single_occurrence(
 ) -> Result<u32, ApiError> {
     // Fetch the existing event to add EXDATE
     let event_uid = request.series_uid.clone();
-    let existing_event = client.fetch_event_by_uid(&request.calendar_path, &event_uid)
+    let existing_event = client
+        .fetch_event_by_uid(&request.calendar_path, &event_uid)
         .await
         .map_err(|e| ApiError::Internal(format!("Failed to fetch event for modification: {}", e)))?
-        .ok_or_else(|| ApiError::NotFound(format!("Event series with UID '{}' not found", event_uid)))?;
+        .ok_or_else(|| {
+            ApiError::NotFound(format!("Event series with UID '{}' not found", event_uid))
+        })?;
 
     // If no occurrence_date is provided, cannot delete single occurrence
     let Some(occurrence_date) = &request.occurrence_date else {
-        return Err(ApiError::BadRequest("occurrence_date is required for single occurrence deletion".to_string()));
+        return Err(ApiError::BadRequest(
+            "occurrence_date is required for single occurrence deletion".to_string(),
+        ));
     };
 
     // Parse occurrence date
-    let exception_date = chrono::NaiveDate::parse_from_str(occurrence_date, "%Y-%m-%d")
-        .map_err(|_| ApiError::BadRequest("Invalid occurrence date format. Expected YYYY-MM-DD".to_string()))?;
+    let exception_date =
+        chrono::NaiveDate::parse_from_str(occurrence_date, "%Y-%m-%d").map_err(|_| {
+            ApiError::BadRequest("Invalid occurrence date format. Expected YYYY-MM-DD".to_string())
+        })?;
 
     // Create the EXDATE datetime (use the same time as the original event)
     let original_time = existing_event.dtstart.time();
@@ -906,12 +1136,21 @@ async fn delete_single_occurrence(
     let mut updated_event = existing_event;
     updated_event.exdate.push(exception_utc);
 
-    println!("🗑️ Added EXDATE for single occurrence deletion: {}", exception_utc.format("%Y%m%dT%H%M%SZ"));
+    println!(
+        "🗑️ Added EXDATE for single occurrence deletion: {}",
+        exception_utc.format("%Y%m%dT%H%M%SZ")
+    );
 
     // Update the event on the CalDAV server
-    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 series for single deletion: {}", e)))?;
+        .map_err(|e| {
+            ApiError::Internal(format!(
+                "Failed to update event series for single deletion: {}",
+                e
+            ))
+        })?;
 
     Ok(1) // 1 occurrence excluded
 }

backend/src/lib.rs

@@ -3,14 +3,14 @@ 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 handlers;
+pub mod models;
 
 use auth::AuthService;
 
@@ -46,9 +46,18 @@ 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),
+        )
         .layer(
             CorsLayer::new()
                 .allow_origin(Any)

backend/src/models.rs

@@ -76,21 +76,21 @@ 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 +103,24 @@ 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 +139,22 @@ 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)
@@ -173,25 +173,25 @@ 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)
@@ -199,7 +199,7 @@ pub struct UpdateEventSeriesRequest {
     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)
 }
@@ -214,12 +214,12 @@ 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
 }
 

backend/tests/integration_tests.rs

@@ -1,16 +1,16 @@
-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 {
@@ -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)
@@ -77,17 +113,25 @@ mod test_utils {
                 "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()
         }
     }
 
@@ -106,15 +150,16 @@ 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
@@ -145,18 +190,29 @@ mod tests {
             "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");
     }
@@ -169,7 +225,8 @@ mod tests {
         // 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()
@@ -196,7 +253,8 @@ mod tests {
         dotenvy::dotenv().ok();
         let password = "test".to_string();
 
-        let response = server.client
+        let response = server
+            .client
             .get(&format!("{}/api/user/info", server.base_url))
             .header("Authorization", format!("Bearer {}", token))
             .header("X-CalDAV-Password", password)
@@ -210,7 +268,10 @@ mod tests {
             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()
+            );
         }
     }
 
@@ -226,20 +287,31 @@ mod tests {
         dotenvy::dotenv().ok();
         let password = "test".to_string();
 
-        let response = server.client
-            .get(&format!("{}/api/calendar/events?year=2024&month=12", server.base_url))
+        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
@@ -274,7 +346,8 @@ mod tests {
             "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)
@@ -311,8 +384,12 @@ mod tests {
         // 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()
@@ -320,8 +397,11 @@ mod tests {
             .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");
     }
@@ -331,7 +411,8 @@ mod tests {
     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()
@@ -339,8 +420,11 @@ mod tests {
             .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");
     }
 
@@ -349,7 +433,8 @@ mod tests {
     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
@@ -396,8 +481,12 @@ mod tests {
             "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)
@@ -456,8 +545,12 @@ mod tests {
             "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)
@@ -472,10 +565,15 @@ mod tests {
         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)");
         }
@@ -500,8 +598,12 @@ mod tests {
             "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)
@@ -518,7 +620,9 @@ mod tests {
             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)");
         }
@@ -553,15 +657,23 @@ mod tests {
             "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");
     }
 
@@ -592,15 +704,23 @@ mod tests {
             "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 ====================
@@ -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

@@ -3,8 +3,8 @@
 //! 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 vevent::*;
 pub use common::*;
+pub use vevent::*;

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

frontend/src/app.rs

@@ -1,11 +1,15 @@
-use yew::prelude::*;
-use yew_router::prelude::*;
+use crate::components::{
+    CalendarContextMenu, ContextMenu, CreateCalendarModal, CreateEventModal, DeleteAction,
+    EditAction, EventClass, EventContextMenu, EventCreationData, EventStatus, RecurrenceType,
+    ReminderType, RouteHandler, Sidebar, Theme, ViewMode,
+};
+use crate::models::ical::VEvent;
+use crate::services::{calendar_service::UserInfo, CalendarService};
+use chrono::NaiveDate;
 use gloo_storage::{LocalStorage, Storage};
 use web_sys::MouseEvent;
-use crate::components::{Sidebar, ViewMode, Theme, CreateCalendarModal, ContextMenu, EventContextMenu, CalendarContextMenu, CreateEventModal, EventCreationData, RouteHandler, EventStatus, EventClass, ReminderType, RecurrenceType, DeleteAction, EditAction};
-use crate::services::{CalendarService, calendar_service::UserInfo};
-use crate::models::ical::VEvent;
-use chrono::NaiveDate;
+use yew::prelude::*;
+use yew_router::prelude::*;
 
 fn get_theme_event_colors() -> Vec<String> {
     if let Some(window) = web_sys::window() {
@@ -27,18 +31,28 @@ fn get_theme_event_colors() -> Vec<String> {
     }
 
     vec![
-        "#3B82F6".to_string(), "#10B981".to_string(), "#F59E0B".to_string(), "#EF4444".to_string(), 
-        "#8B5CF6".to_string(), "#06B6D4".to_string(), "#84CC16".to_string(), "#F97316".to_string(),
-        "#EC4899".to_string(), "#6366F1".to_string(), "#14B8A6".to_string(), "#F3B806".to_string(),
-        "#8B5A2B".to_string(), "#6B7280".to_string(), "#DC2626".to_string(), "#7C3AED".to_string()
+        "#3B82F6".to_string(),
+        "#10B981".to_string(),
+        "#F59E0B".to_string(),
+        "#EF4444".to_string(),
+        "#8B5CF6".to_string(),
+        "#06B6D4".to_string(),
+        "#84CC16".to_string(),
+        "#F97316".to_string(),
+        "#EC4899".to_string(),
+        "#6366F1".to_string(),
+        "#14B8A6".to_string(),
+        "#F3B806".to_string(),
+        "#8B5A2B".to_string(),
+        "#6B7280".to_string(),
+        "#DC2626".to_string(),
+        "#7C3AED".to_string(),
     ]
 }
 
 #[function_component]
 pub fn App() -> Html {
-    let auth_token = use_state(|| -> Option<String> {
-        LocalStorage::get("auth_token").ok()
-    });
+    let auth_token = use_state(|| -> Option<String> { LocalStorage::get("auth_token").ok() });
 
     let user_info = use_state(|| -> Option<UserInfo> { None });
     let color_picker_open = use_state(|| -> Option<String> { None });
@@ -164,8 +178,12 @@ pub fn App() -> Html {
                 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) {
+                    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()
@@ -177,8 +195,12 @@ pub fn App() -> Html {
                     if !password.is_empty() {
                         match calendar_service.fetch_user_info(&token, &password).await {
                             Ok(mut info) => {
-                                if let Ok(saved_colors_json) = LocalStorage::get::<String>("calendar_colors") {
-                                    if let Ok(saved_info) = serde_json::from_str::<UserInfo>(&saved_colors_json) {
+                                if let Ok(saved_colors_json) =
+                                    LocalStorage::get::<String>("calendar_colors")
+                                {
+                                    if let Ok(saved_info) =
+                                        serde_json::from_str::<UserInfo>(&saved_colors_json)
+                                    {
                                         for saved_cal in &saved_info.calendars {
                                             for cal in &mut info.calendars {
                                                 if cal.path == saved_cal.path {
@@ -191,7 +213,9 @@ pub fn App() -> Html {
                                 user_info.set(Some(info));
                             }
                             Err(err) => {
-                                web_sys::console::log_1(&format!("Failed to fetch user info: {}", err).into());
+                                web_sys::console::log_1(
+                                    &format!("Failed to fetch user info: {}", err).into(),
+                                );
                             }
                         }
                     }
@@ -211,10 +235,10 @@ pub fn App() -> Html {
         let calendar_context_menu_open = calendar_context_menu_open.clone();
         Callback::from(move |e: MouseEvent| {
             // Check if any context menu or color picker is open
-            let any_menu_open = color_picker_open.is_some() || 
-                               *context_menu_open || 
-                               *event_context_menu_open || 
-                               *calendar_context_menu_open;
+            let any_menu_open = color_picker_open.is_some()
+                || *context_menu_open
+                || *event_context_menu_open
+                || *calendar_context_menu_open;
 
             if any_menu_open {
                 // Prevent the default action and stop event propagation
@@ -231,10 +255,10 @@ pub fn App() -> Html {
     };
 
     // Compute if any context menu is open
-    let any_context_menu_open = color_picker_open.is_some() || 
-                               *context_menu_open || 
-                               *event_context_menu_open || 
-                               *calendar_context_menu_open;
+    let any_context_menu_open = color_picker_open.is_some()
+        || *context_menu_open
+        || *event_context_menu_open
+        || *calendar_context_menu_open;
 
     let on_color_change = {
         let user_info = user_info.clone();
@@ -323,8 +347,12 @@ pub fn App() -> Html {
                     let _calendar_service = CalendarService::new();
 
                     // Get CalDAV password from storage
-                    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) {
+                    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()
@@ -334,28 +362,28 @@ pub fn App() -> Html {
                     };
 
                     let params = event_data.to_create_event_params();
-                    let create_result = _calendar_service.create_event(
-                        &_token,
-                        &_password,
-                        params.0,  // title
-                        params.1,  // description
-                        params.2,  // start_date
-                        params.3,  // start_time
-                        params.4,  // end_date
-                        params.5,  // end_time
-                        params.6,  // location
-                        params.7,  // all_day
-                        params.8,  // status
-                        params.9,  // class
-                        params.10, // priority
-                        params.11, // organizer
-                        params.12, // attendees
-                        params.13, // categories
-                        params.14, // reminder
-                        params.15, // recurrence
-                        params.16, // recurrence_days
-                        params.17  // calendar_path
-                    ).await;
+                    let create_result = _calendar_service
+                        .create_event(
+                            &_token, &_password, params.0,  // title
+                            params.1,  // description
+                            params.2,  // start_date
+                            params.3,  // start_time
+                            params.4,  // end_date
+                            params.5,  // end_time
+                            params.6,  // location
+                            params.7,  // all_day
+                            params.8,  // status
+                            params.9,  // class
+                            params.10, // priority
+                            params.11, // organizer
+                            params.12, // attendees
+                            params.13, // categories
+                            params.14, // reminder
+                            params.15, // recurrence
+                            params.16, // recurrence_days
+                            params.17, // calendar_path
+                        )
+                        .await;
                     match create_result {
                         Ok(_) => {
                             web_sys::console::log_1(&"Event created successfully".into());
@@ -364,8 +392,13 @@ pub fn App() -> Html {
                             web_sys::window().unwrap().location().reload().unwrap();
                         }
                         Err(err) => {
-                            web_sys::console::error_1(&format!("Failed to create event: {}", err).into());
-                            web_sys::window().unwrap().alert_with_message(&format!("Failed to create event: {}", err)).unwrap();
+                            web_sys::console::error_1(
+                                &format!("Failed to create event: {}", err).into(),
+                            );
+                            web_sys::window()
+                                .unwrap()
+                                .alert_with_message(&format!("Failed to create event: {}", err))
+                                .unwrap();
                         }
                     }
                 });
@@ -375,161 +408,232 @@ pub fn App() -> Html {
 
     let on_event_update = {
         let auth_token = auth_token.clone();
-        Callback::from(move |(original_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>)| {
-            web_sys::console::log_1(&format!("Updating event: {} to new times: {} - {}", 
-                original_event.uid, 
-                new_start.format("%Y-%m-%d %H:%M"),
-                new_end.format("%Y-%m-%d %H:%M")).into());
+        Callback::from(
+            move |(
+                original_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>,
+            )| {
+                web_sys::console::log_1(
+                    &format!(
+                        "Updating event: {} to new times: {} - {}",
+                        original_event.uid,
+                        new_start.format("%Y-%m-%d %H:%M"),
+                        new_end.format("%Y-%m-%d %H:%M")
+                    )
+                    .into(),
+                );
 
-            // Use the original UID for all updates
-            let backend_uid = original_event.uid.clone();
+                // Use the original UID for all updates
+                let backend_uid = original_event.uid.clone();
 
-            if let Some(token) = (*auth_token).clone() {
-                let original_event = original_event.clone();
-                let backend_uid = backend_uid.clone();
-                wasm_bindgen_futures::spawn_local(async move {
-                    let calendar_service = CalendarService::new();
+                if let Some(token) = (*auth_token).clone() {
+                    let original_event = original_event.clone();
+                    let backend_uid = backend_uid.clone();
+                    wasm_bindgen_futures::spawn_local(async move {
+                        let calendar_service = CalendarService::new();
 
-                    // Get CalDAV password from storage
-                    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()
+                        // Get CalDAV password from storage
+                        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()
-                        }
-                    } else {
-                        String::new()
-                    };
+                        };
 
-                    // Convert local times to UTC for backend storage
-                    let start_utc = new_start.and_local_timezone(chrono::Local).unwrap().to_utc();
-                    let end_utc = new_end.and_local_timezone(chrono::Local).unwrap().to_utc();
+                        // Convert local times to UTC for backend storage
+                        let start_utc = new_start
+                            .and_local_timezone(chrono::Local)
+                            .unwrap()
+                            .to_utc();
+                        let end_utc = new_end.and_local_timezone(chrono::Local).unwrap().to_utc();
 
-                    // Format UTC date and time strings for backend
-                    let start_date = start_utc.format("%Y-%m-%d").to_string();
-                    let start_time = start_utc.format("%H:%M").to_string();
-                    let end_date = end_utc.format("%Y-%m-%d").to_string();
-                    let end_time = end_utc.format("%H:%M").to_string();
+                        // Format UTC date and time strings for backend
+                        let start_date = start_utc.format("%Y-%m-%d").to_string();
+                        let start_time = start_utc.format("%H:%M").to_string();
+                        let end_date = end_utc.format("%Y-%m-%d").to_string();
+                        let end_time = end_utc.format("%H:%M").to_string();
 
-                    // Convert existing event data to string formats for the API
-                    let status_str = match original_event.status {
-                        Some(crate::models::ical::EventStatus::Tentative) => "TENTATIVE".to_string(),
-                        Some(crate::models::ical::EventStatus::Confirmed) => "CONFIRMED".to_string(),
-                        Some(crate::models::ical::EventStatus::Cancelled) => "CANCELLED".to_string(),
-                        None => "CONFIRMED".to_string(), // Default status
-                    };
+                        // Convert existing event data to string formats for the API
+                        let status_str = match original_event.status {
+                            Some(crate::models::ical::EventStatus::Tentative) => {
+                                "TENTATIVE".to_string()
+                            }
+                            Some(crate::models::ical::EventStatus::Confirmed) => {
+                                "CONFIRMED".to_string()
+                            }
+                            Some(crate::models::ical::EventStatus::Cancelled) => {
+                                "CANCELLED".to_string()
+                            }
+                            None => "CONFIRMED".to_string(), // Default status
+                        };
 
-                    let class_str = match original_event.class {
-                        Some(crate::models::ical::EventClass::Public) => "PUBLIC".to_string(),
-                        Some(crate::models::ical::EventClass::Private) => "PRIVATE".to_string(),
-                        Some(crate::models::ical::EventClass::Confidential) => "CONFIDENTIAL".to_string(),
-                        None => "PUBLIC".to_string(), // Default class
-                    };
+                        let class_str = match original_event.class {
+                            Some(crate::models::ical::EventClass::Public) => "PUBLIC".to_string(),
+                            Some(crate::models::ical::EventClass::Private) => "PRIVATE".to_string(),
+                            Some(crate::models::ical::EventClass::Confidential) => {
+                                "CONFIDENTIAL".to_string()
+                            }
+                            None => "PUBLIC".to_string(), // Default class
+                        };
 
-                    // Convert reminders to string format
-                    let reminder_str = if !original_event.alarms.is_empty() {
-                        // Convert from VAlarm to minutes before
-                        "15".to_string() // TODO: Convert VAlarm trigger to minutes
-                    } else {
-                        "".to_string()
-                    };
-                    
-                    // Handle recurrence (keep existing)
-                    let recurrence_str = original_event.rrule.unwrap_or_default();
-                    let recurrence_days = vec![false; 7]; // Default - could be enhanced to parse existing recurrence
-                    
-                    // Determine if this is a recurring event that needs series endpoint
-                    let has_recurrence = !recurrence_str.is_empty() && recurrence_str.to_uppercase() != "NONE";
-                    
-                    let result = if let Some(scope) = update_scope.as_ref() {
-                        // Use series endpoint for recurring event operations
-                        if !has_recurrence {
-                            web_sys::console::log_1(&"⚠️ Warning: update_scope provided for non-recurring event, using regular endpoint instead".into());
-                            // Fall through to regular endpoint
-                            None
+                        // Convert reminders to string format
+                        let reminder_str = if !original_event.alarms.is_empty() {
+                            // Convert from VAlarm to minutes before
+                            "15".to_string() // TODO: Convert VAlarm trigger to minutes
                         } else {
-                            Some(calendar_service.update_series(
-                                &token,
-                                &password,
-                                backend_uid.clone(),
-                                original_event.summary.clone().unwrap_or_default(),
-                                original_event.description.clone().unwrap_or_default(),
-                                start_date.clone(),
-                                start_time.clone(),
-                                end_date.clone(),
-                                end_time.clone(),
-                                original_event.location.clone().unwrap_or_default(),
-                                original_event.all_day,
-                                status_str.clone(),
-                                class_str.clone(),
-                                original_event.priority,
-                                original_event.organizer.as_ref().map(|o| o.cal_address.clone()).unwrap_or_default(),
-                                original_event.attendees.iter().map(|a| a.cal_address.clone()).collect::<Vec<_>>().join(","),
-                                original_event.categories.join(","),
-                                reminder_str.clone(),
-                                recurrence_str.clone(),
-                                original_event.calendar_path.clone(),
-                                scope.clone(),
-                                occurrence_date,
-                            ).await)
-                        }
-                    } else {
-                        None
-                    };
+                            "".to_string()
+                        };
 
-                    let result = if let Some(series_result) = result {
-                        series_result
-                    } else {
-                        // Use regular endpoint
-                        calendar_service.update_event(
-                            &token,
-                            &password,
-                            backend_uid,
-                            original_event.summary.unwrap_or_default(),
-                            original_event.description.unwrap_or_default(),
-                            start_date,
-                            start_time,
-                            end_date,
-                            end_time,
-                            original_event.location.unwrap_or_default(),
-                            original_event.all_day,
-                            status_str,
-                            class_str,
-                            original_event.priority,
-                            original_event.organizer.as_ref().map(|o| o.cal_address.clone()).unwrap_or_default(),
-                            original_event.attendees.iter().map(|a| a.cal_address.clone()).collect::<Vec<_>>().join(","),
-                            original_event.categories.join(","),
-                            reminder_str,
-                            recurrence_str,
-                            recurrence_days,
-                            original_event.calendar_path,
-                            original_event.exdate.clone(),
-                            if preserve_rrule { 
-                                Some("update_series".to_string()) 
+                        // Handle recurrence (keep existing)
+                        let recurrence_str = original_event.rrule.unwrap_or_default();
+                        let recurrence_days = vec![false; 7]; // Default - could be enhanced to parse existing recurrence
+
+                        // Determine if this is a recurring event that needs series endpoint
+                        let has_recurrence =
+                            !recurrence_str.is_empty() && recurrence_str.to_uppercase() != "NONE";
+
+                        let result = if let Some(scope) = update_scope.as_ref() {
+                            // Use series endpoint for recurring event operations
+                            if !has_recurrence {
+                                web_sys::console::log_1(&"⚠️ Warning: update_scope provided for non-recurring event, using regular endpoint instead".into());
+                                // Fall through to regular endpoint
+                                None
                             } else {
-                                Some("this_and_future".to_string()) 
-                            },
-                            until_date
-                        ).await
-                    };
+                                Some(
+                                    calendar_service
+                                        .update_series(
+                                            &token,
+                                            &password,
+                                            backend_uid.clone(),
+                                            original_event.summary.clone().unwrap_or_default(),
+                                            original_event.description.clone().unwrap_or_default(),
+                                            start_date.clone(),
+                                            start_time.clone(),
+                                            end_date.clone(),
+                                            end_time.clone(),
+                                            original_event.location.clone().unwrap_or_default(),
+                                            original_event.all_day,
+                                            status_str.clone(),
+                                            class_str.clone(),
+                                            original_event.priority,
+                                            original_event
+                                                .organizer
+                                                .as_ref()
+                                                .map(|o| o.cal_address.clone())
+                                                .unwrap_or_default(),
+                                            original_event
+                                                .attendees
+                                                .iter()
+                                                .map(|a| a.cal_address.clone())
+                                                .collect::<Vec<_>>()
+                                                .join(","),
+                                            original_event.categories.join(","),
+                                            reminder_str.clone(),
+                                            recurrence_str.clone(),
+                                            original_event.calendar_path.clone(),
+                                            scope.clone(),
+                                            occurrence_date,
+                                        )
+                                        .await,
+                                )
+                            }
+                        } else {
+                            None
+                        };
 
-                    match result {
-                        Ok(_) => {
-                            web_sys::console::log_1(&"Event updated successfully".into());
-                            // Add small delay before reload to let any pending requests complete
-                            wasm_bindgen_futures::spawn_local(async {
-                                gloo_timers::future::sleep(std::time::Duration::from_millis(100)).await;
-                                web_sys::window().unwrap().location().reload().unwrap();
-                            });
+                        let result = if let Some(series_result) = result {
+                            series_result
+                        } else {
+                            // Use regular endpoint
+                            calendar_service
+                                .update_event(
+                                    &token,
+                                    &password,
+                                    backend_uid,
+                                    original_event.summary.unwrap_or_default(),
+                                    original_event.description.unwrap_or_default(),
+                                    start_date,
+                                    start_time,
+                                    end_date,
+                                    end_time,
+                                    original_event.location.unwrap_or_default(),
+                                    original_event.all_day,
+                                    status_str,
+                                    class_str,
+                                    original_event.priority,
+                                    original_event
+                                        .organizer
+                                        .as_ref()
+                                        .map(|o| o.cal_address.clone())
+                                        .unwrap_or_default(),
+                                    original_event
+                                        .attendees
+                                        .iter()
+                                        .map(|a| a.cal_address.clone())
+                                        .collect::<Vec<_>>()
+                                        .join(","),
+                                    original_event.categories.join(","),
+                                    reminder_str,
+                                    recurrence_str,
+                                    recurrence_days,
+                                    original_event.calendar_path,
+                                    original_event.exdate.clone(),
+                                    if preserve_rrule {
+                                        Some("update_series".to_string())
+                                    } else {
+                                        Some("this_and_future".to_string())
+                                    },
+                                    until_date,
+                                )
+                                .await
+                        };
+
+                        match result {
+                            Ok(_) => {
+                                web_sys::console::log_1(&"Event updated successfully".into());
+                                // Add small delay before reload to let any pending requests complete
+                                wasm_bindgen_futures::spawn_local(async {
+                                    gloo_timers::future::sleep(std::time::Duration::from_millis(
+                                        100,
+                                    ))
+                                    .await;
+                                    web_sys::window().unwrap().location().reload().unwrap();
+                                });
+                            }
+                            Err(err) => {
+                                web_sys::console::error_1(
+                                    &format!("Failed to update event: {}", err).into(),
+                                );
+                                web_sys::window()
+                                    .unwrap()
+                                    .alert_with_message(&format!("Failed to update event: {}", err))
+                                    .unwrap();
+                            }
                         }
-                        Err(err) => {
-                            web_sys::console::error_1(&format!("Failed to update event: {}", err).into());
-                            web_sys::window().unwrap().alert_with_message(&format!("Failed to update event: {}", err)).unwrap();
-                        }
-                    }
-                });
-            }
-        })
+                    });
+                }
+            },
+        )
     };
 
     let refresh_calendars = {
@@ -542,8 +646,12 @@ pub fn App() -> Html {
                 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) {
+                    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()
@@ -554,8 +662,12 @@ pub fn App() -> Html {
 
                     match calendar_service.fetch_user_info(&token, &password).await {
                         Ok(mut info) => {
-                            if let Ok(saved_colors_json) = LocalStorage::get::<String>("calendar_colors") {
-                                if let Ok(saved_info) = serde_json::from_str::<UserInfo>(&saved_colors_json) {
+                            if let Ok(saved_colors_json) =
+                                LocalStorage::get::<String>("calendar_colors")
+                            {
+                                if let Ok(saved_info) =
+                                    serde_json::from_str::<UserInfo>(&saved_colors_json)
+                                {
                                     for saved_cal in &saved_info.calendars {
                                         for cal in &mut info.calendars {
                                             if cal.path == saved_cal.path {
@@ -568,7 +680,9 @@ pub fn App() -> Html {
                             user_info.set(Some(info));
                         }
                         Err(err) => {
-                            web_sys::console::log_1(&format!("Failed to refresh calendars: {}", err).into());
+                            web_sys::console::log_1(
+                                &format!("Failed to refresh calendars: {}", err).into(),
+                            );
                         }
                     }
                 });
@@ -577,7 +691,9 @@ pub fn App() -> Html {
     };
 
     // Debug logging
-    web_sys::console::log_1(&format!("App rendering: auth_token = {:?}", auth_token.is_some()).into());
+    web_sys::console::log_1(
+        &format!("App rendering: auth_token = {:?}", auth_token.is_some()).into(),
+    );
 
     html! {
         <BrowserRouter>

frontend/src/auth.rs

@@ -50,8 +50,8 @@ impl AuthService {
     ) -> 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 +62,27 @@ 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)

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
@@ -57,17 +70,16 @@ 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(|| {
@@ -83,6 +95,154 @@ pub fn Calendar(props: &CalendarProps) -> Html {
         }
     });
 
+    // 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();
@@ -110,16 +270,19 @@ 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(),
+            );
         })
     };
 
@@ -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(),
+            );
         })
     };
 
@@ -160,12 +327,15 @@ 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(),
+            );
         })
     };
 
@@ -184,22 +354,58 @@ pub fn Calendar(props: &CalendarProps) -> Html {
     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! {
@@ -215,7 +421,20 @@ pub fn Calendar(props: &CalendarProps) -> Html {
             />
 
             {
-                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();
@@ -229,9 +448,9 @@ pub fn Calendar(props: &CalendarProps) -> 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()}
@@ -257,6 +476,7 @@ pub fn Calendar(props: &CalendarProps) -> Html {
                             time_increment={*time_increment}
                         />
                     },
+                    }
                 }
             }
 

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 {

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">
@@ -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)
 }

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 {

frontend/src/components/create_calendar_modal.rs

@@ -50,7 +50,9 @@ pub fn CreateCalendarModal(props: &CreateCalendarModalProps) -> Html {
             }
 
             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;
             }
 

frontend/src/components/create_event_modal.rs

@@ -1,10 +1,10 @@
-use yew::prelude::*;
-use web_sys::{HtmlInputElement, HtmlTextAreaElement, HtmlSelectElement};
-use wasm_bindgen::JsCast;
-use chrono::{NaiveDate, NaiveTime, Local, TimeZone, Utc, Datelike};
-use crate::services::calendar_service::CalendarInfo;
-use crate::models::ical::VEvent;
 use crate::components::EditAction;
+use crate::models::ical::VEvent;
+use crate::services::calendar_service::CalendarInfo;
+use chrono::{Datelike, Local, NaiveDate, NaiveTime, TimeZone, Utc};
+use wasm_bindgen::JsCast;
+use web_sys::{HtmlInputElement, HtmlSelectElement, HtmlTextAreaElement};
+use yew::prelude::*;
 
 #[derive(Properties, PartialEq)]
 pub struct CreateEventModalProps {
@@ -36,7 +36,6 @@ impl Default for EventStatus {
     }
 }
 
-
 #[derive(Clone, PartialEq, Debug)]
 pub enum EventClass {
     Public,
@@ -50,7 +49,6 @@ impl Default for EventClass {
     }
 }
 
-
 #[derive(Clone, PartialEq, Debug)]
 pub enum ReminderType {
     None,
@@ -84,7 +82,6 @@ impl Default for RecurrenceType {
     }
 }
 
-
 /// Parse RRULE string into recurrence components
 /// Example RRULE: "FREQ=WEEKLY;INTERVAL=2;BYDAY=MO,WE,FR;UNTIL=20231215T000000Z"
 #[derive(Debug, Default, Clone)]
@@ -145,9 +142,7 @@ fn parse_rrule(rrule: Option<&str>) -> ParsedRrule {
             }
             "BYDAY" => {
                 // Parse BYDAY: "MO,WE,FR" or "1MO,-1SU" (with position)
-                parsed.byday = value.split(',')
-                    .map(|s| s.trim().to_uppercase())
-                    .collect();
+                parsed.byday = value.split(',').map(|s| s.trim().to_uppercase()).collect();
             }
             "BYMONTHDAY" => {
                 // Parse BYMONTHDAY: "15" or "1,15,31"
@@ -161,7 +156,8 @@ fn parse_rrule(rrule: Option<&str>) -> ParsedRrule {
             }
             "BYMONTH" => {
                 // Parse BYMONTH: "1,3,5" (January, March, May)
-                parsed.bymonth = value.split(',')
+                parsed.bymonth = value
+                    .split(',')
                     .filter_map(|m| m.trim().parse::<u8>().ok())
                     .filter(|&m| m >= 1 && m <= 12)
                     .collect();
@@ -182,7 +178,7 @@ fn byday_to_weekday_array(byday: &[String]) -> Vec<bool> {
         // Handle both simple days (MO, TU) and positioned days (1MO, -1SU)
         let day_code = if day_spec.len() > 2 {
             // Extract last 2 characters for positioned days like "1MO" -> "MO"
-            &day_spec[day_spec.len()-2..]
+            &day_spec[day_spec.len() - 2..]
         } else {
             day_spec
         };
@@ -221,7 +217,8 @@ fn bymonth_to_monthly_array(bymonth: &[u8]) -> Vec<bool> {
 /// Extract positioned weekday from BYDAY for monthly recurrence
 /// Examples: "1MO" -> Some("1MO"), "2TU" -> Some("2TU"), "-1SU" -> Some("-1SU")
 fn extract_monthly_byday(byday: &[String]) -> Option<String> {
-    byday.iter()
+    byday
+        .iter()
         .find(|day| day.len() > 2) // Positioned days have length > 2
         .cloned()
 }
@@ -240,7 +237,9 @@ mod rrule_tests {
 
     #[test]
     fn test_parse_complex_monthly() {
-        let parsed = parse_rrule(Some("FREQ=MONTHLY;INTERVAL=2;BYDAY=1MO;UNTIL=20241231T000000Z"));
+        let parsed = parse_rrule(Some(
+            "FREQ=MONTHLY;INTERVAL=2;BYDAY=1MO;UNTIL=20241231T000000Z",
+        ));
         assert_eq!(parsed.freq, RecurrenceType::Monthly);
         assert_eq!(parsed.interval, 2);
         assert_eq!(parsed.byday, vec!["1MO"]);
@@ -249,7 +248,8 @@ mod rrule_tests {
 
     #[test]
     fn test_byday_to_weekday_array() {
-        let weekdays = byday_to_weekday_array(&["MO".to_string(), "WE".to_string(), "FR".to_string()]);
+        let weekdays =
+            byday_to_weekday_array(&["MO".to_string(), "WE".to_string(), "FR".to_string()]);
         // [Sun, Mon, Tue, Wed, Thu, Fri, Sat]
         assert_eq!(weekdays, vec![false, true, false, true, false, true, false]);
     }
@@ -295,14 +295,15 @@ mod rrule_tests {
     fn test_build_rrule_yearly() {
         let mut data = EventCreationData::default();
         data.recurrence = RecurrenceType::Yearly;
-        data.yearly_by_month = vec![false, false, true, false, true, false, false, false, false, false, false, false]; // March, May
+        data.yearly_by_month = vec![
+            false, false, true, false, true, false, false, false, false, false, false, false,
+        ]; // March, May
 
         let rrule = data.build_rrule();
         println!("YEARLY RRULE: {}", rrule);
         assert!(rrule.contains("FREQ=YEARLY"));
         assert!(rrule.contains("BYMONTH=3,5"));
     }
-
 }
 
 #[derive(Clone, PartialEq, Debug)]
@@ -319,7 +320,7 @@ pub struct EventCreationData {
     pub class: EventClass,
     pub priority: Option<u8>,
     pub organizer: String,
-    pub attendees: String, // Comma-separated list
+    pub attendees: String,  // Comma-separated list
     pub categories: String, // Comma-separated list
     pub reminder: ReminderType,
     pub recurrence: RecurrenceType,
@@ -332,7 +333,7 @@ pub struct EventCreationData {
     pub recurrence_count: Option<u32>, // COUNT - number of occurrences
     pub monthly_by_day: Option<String>, // For monthly: "1MO" = first Monday, "2TU" = second Tuesday, etc.
     pub monthly_by_monthday: Option<u8>, // For monthly: day of month (1-31)
-    pub yearly_by_month: Vec<bool>, // For yearly: [Jan, Feb, Mar, ..., Dec]
+    pub yearly_by_month: Vec<bool>,     // For yearly: [Jan, Feb, Mar, ..., Dec]
 
     // Edit scope and tracking fields
     pub edit_scope: Option<EditAction>,
@@ -407,21 +408,25 @@ impl EventCreationData {
         match self.recurrence {
             RecurrenceType::Weekly => {
                 // Add BYDAY for weekly recurrence
-                let selected_days: Vec<&str> = self.recurrence_days.iter()
+                let selected_days: Vec<&str> = self
+                    .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
-                            _ => "",
-                        })
-                    } else {
-                        None
+                    .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
+                                _ => "",
+                            })
+                        } else {
+                            None
+                        }
                     })
                     .filter(|s| !s.is_empty())
                     .collect();
@@ -429,7 +434,7 @@ impl EventCreationData {
                 if !selected_days.is_empty() {
                     parts.push(format!("BYDAY={}", selected_days.join(",")));
                 }
-            },
+            }
             RecurrenceType::Monthly => {
                 // Add BYDAY or BYMONTHDAY for monthly recurrence
                 if let Some(ref by_day) = self.monthly_by_day {
@@ -437,22 +442,26 @@ impl EventCreationData {
                 } else if let Some(by_monthday) = self.monthly_by_monthday {
                     parts.push(format!("BYMONTHDAY={}", by_monthday));
                 }
-            },
+            }
             RecurrenceType::Yearly => {
                 // Add BYMONTH for yearly recurrence
-                let selected_months: Vec<String> = self.yearly_by_month.iter()
+                let selected_months: Vec<String> = self
+                    .yearly_by_month
+                    .iter()
                     .enumerate()
-                    .filter_map(|(i, &selected)| if selected {
-                        Some((i + 1).to_string()) // Convert 0-based index to 1-based month
-                    } else {
-                        None
+                    .filter_map(|(i, &selected)| {
+                        if selected {
+                            Some((i + 1).to_string()) // Convert 0-based index to 1-based month
+                        } else {
+                            None
+                        }
                     })
                     .collect();
 
                 if !selected_months.is_empty() {
                     parts.push(format!("BYMONTH={}", selected_months.join(",")));
                 }
-            },
+            }
             _ => {}
         }
 
@@ -467,11 +476,36 @@ impl EventCreationData {
         parts.join(";")
     }
 
-    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>) {
+    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>,
+    ) {
         // Convert local date/time to UTC
-        let start_local = Local.from_local_datetime(&self.start_date.and_time(self.start_time)).single()
+        let start_local = Local
+            .from_local_datetime(&self.start_date.and_time(self.start_time))
+            .single()
             .unwrap_or_else(|| Local::now());
-        let end_local = Local.from_local_datetime(&self.end_date.and_time(self.end_time)).single()
+        let end_local = Local
+            .from_local_datetime(&self.end_date.and_time(self.end_time))
+            .single()
             .unwrap_or_else(|| Local::now());
 
         let start_utc = start_local.with_timezone(&Utc);
@@ -512,7 +546,7 @@ impl EventCreationData {
             },
             self.build_rrule(), // Use the comprehensive RRULE builder
             self.recurrence_days.clone(),
-            self.selected_calendar.clone()
+            self.selected_calendar.clone(),
         )
     }
 }
@@ -531,23 +565,48 @@ impl EventCreationData {
             description: event.description.clone().unwrap_or_default(),
             start_date: event.dtstart.with_timezone(&chrono::Local).date_naive(),
             start_time: event.dtstart.with_timezone(&chrono::Local).time(),
-            end_date: event.dtend.as_ref().map(|e| e.with_timezone(&chrono::Local).date_naive()).unwrap_or(event.dtstart.with_timezone(&chrono::Local).date_naive()),
-            end_time: event.dtend.as_ref().map(|e| e.with_timezone(&chrono::Local).time()).unwrap_or(event.dtstart.with_timezone(&chrono::Local).time()),
+            end_date: event
+                .dtend
+                .as_ref()
+                .map(|e| e.with_timezone(&chrono::Local).date_naive())
+                .unwrap_or(event.dtstart.with_timezone(&chrono::Local).date_naive()),
+            end_time: event
+                .dtend
+                .as_ref()
+                .map(|e| e.with_timezone(&chrono::Local).time())
+                .unwrap_or(event.dtstart.with_timezone(&chrono::Local).time()),
             location: event.location.clone().unwrap_or_default(),
             all_day: event.all_day,
-            status: event.status.as_ref().map(|s| match s {
-                crate::models::ical::EventStatus::Tentative => EventStatus::Tentative,
-                crate::models::ical::EventStatus::Confirmed => EventStatus::Confirmed,
-                crate::models::ical::EventStatus::Cancelled => EventStatus::Cancelled,
-            }).unwrap_or(EventStatus::Confirmed),
-            class: event.class.as_ref().map(|c| match c {
-                crate::models::ical::EventClass::Public => EventClass::Public,
-                crate::models::ical::EventClass::Private => EventClass::Private,
-                crate::models::ical::EventClass::Confidential => EventClass::Confidential,
-            }).unwrap_or(EventClass::Public),
+            status: event
+                .status
+                .as_ref()
+                .map(|s| match s {
+                    crate::models::ical::EventStatus::Tentative => EventStatus::Tentative,
+                    crate::models::ical::EventStatus::Confirmed => EventStatus::Confirmed,
+                    crate::models::ical::EventStatus::Cancelled => EventStatus::Cancelled,
+                })
+                .unwrap_or(EventStatus::Confirmed),
+            class: event
+                .class
+                .as_ref()
+                .map(|c| match c {
+                    crate::models::ical::EventClass::Public => EventClass::Public,
+                    crate::models::ical::EventClass::Private => EventClass::Private,
+                    crate::models::ical::EventClass::Confidential => EventClass::Confidential,
+                })
+                .unwrap_or(EventClass::Public),
             priority: event.priority,
-            organizer: event.organizer.as_ref().map(|o| o.cal_address.clone()).unwrap_or_default(),
-            attendees: event.attendees.iter().map(|a| a.cal_address.clone()).collect::<Vec<_>>().join(", "),
+            organizer: event
+                .organizer
+                .as_ref()
+                .map(|o| o.cal_address.clone())
+                .unwrap_or_default(),
+            attendees: event
+                .attendees
+                .iter()
+                .map(|a| a.cal_address.clone())
+                .collect::<Vec<_>>()
+                .join(", "),
             categories: event.categories.join(", "),
             reminder: ReminderType::default(), // TODO: Convert from event reminders
             recurrence: parsed_rrule.freq.clone(),
@@ -583,7 +642,6 @@ impl EventCreationData {
             changed_fields: vec![],
         }
     }
-
 }
 
 #[derive(Clone, PartialEq)]
@@ -608,48 +666,67 @@ pub fn create_event_modal(props: &CreateEventModalProps) -> Html {
     let active_tab = use_state(|| ModalTab::default());
 
     // Initialize with selected date or event data if provided
-    use_effect_with((props.selected_date, props.event_to_edit.clone(), props.is_open, props.available_calendars.clone(), props.initial_start_time, props.initial_end_time, props.edit_scope.clone()), {
-        let event_data = event_data.clone();
-        move |(selected_date, event_to_edit, is_open, available_calendars, initial_start_time, initial_end_time, edit_scope)| {
-            if *is_open {
-                let mut data = if let Some(event) = event_to_edit {
-                    // Pre-populate with event data for editing
-                    EventCreationData::from_calendar_event(event)
-                } else if let Some(date) = selected_date {
-                    // Initialize with selected date for new event
-                    let mut data = EventCreationData::default();
-                    data.start_date = *date;
-                    data.end_date = *date;
+    use_effect_with(
+        (
+            props.selected_date,
+            props.event_to_edit.clone(),
+            props.is_open,
+            props.available_calendars.clone(),
+            props.initial_start_time,
+            props.initial_end_time,
+            props.edit_scope.clone(),
+        ),
+        {
+            let event_data = event_data.clone();
+            move |(
+                selected_date,
+                event_to_edit,
+                is_open,
+                available_calendars,
+                initial_start_time,
+                initial_end_time,
+                edit_scope,
+            )| {
+                if *is_open {
+                    let mut data = if let Some(event) = event_to_edit {
+                        // Pre-populate with event data for editing
+                        EventCreationData::from_calendar_event(event)
+                    } else if let Some(date) = selected_date {
+                        // Initialize with selected date for new event
+                        let mut data = EventCreationData::default();
+                        data.start_date = *date;
+                        data.end_date = *date;
 
-                    // Use initial times if provided (from drag-to-create)
-                    if let Some(start_time) = initial_start_time {
-                        data.start_time = *start_time;
-                    }
-                    if let Some(end_time) = initial_end_time {
-                        data.end_time = *end_time;
+                        // Use initial times if provided (from drag-to-create)
+                        if let Some(start_time) = initial_start_time {
+                            data.start_time = *start_time;
+                        }
+                        if let Some(end_time) = initial_end_time {
+                            data.end_time = *end_time;
+                        }
+
+                        data
+                    } else {
+                        // Default initialization
+                        EventCreationData::default()
+                    };
+
+                    // Set default calendar to the first available one if none selected
+                    if data.selected_calendar.is_none() && !available_calendars.is_empty() {
+                        data.selected_calendar = Some(available_calendars[0].path.clone());
                     }
 
-                    data
-                } else {
-                    // Default initialization
-                    EventCreationData::default()
-                };
+                    // Set edit scope if provided
+                    if let Some(scope) = edit_scope {
+                        data.edit_scope = Some(scope.clone());
+                    }
 
-                // Set default calendar to the first available one if none selected
-                if data.selected_calendar.is_none() && !available_calendars.is_empty() {
-                    data.selected_calendar = Some(available_calendars[0].path.clone());
+                    event_data.set(data);
                 }
-                
-                // Set edit scope if provided
-                if let Some(scope) = edit_scope {
-                    data.edit_scope = Some(scope.clone());
-                }
-                
-                event_data.set(data);
+                || ()
             }
-            || ()
-        }
-    });
+        },
+    );
 
     if !props.is_open {
         return html! {};
@@ -697,7 +774,10 @@ pub fn create_event_modal(props: &CreateEventModalProps) -> Html {
                 let new_calendar = if value.is_empty() { None } else { Some(value) };
                 if data.selected_calendar != new_calendar {
                     data.selected_calendar = new_calendar;
-                    if !data.changed_fields.contains(&"selected_calendar".to_string()) {
+                    if !data
+                        .changed_fields
+                        .contains(&"selected_calendar".to_string())
+                    {
                         data.changed_fields.push("selected_calendar".to_string());
                     }
                 }

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 {
@@ -41,7 +41,9 @@ 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);
 

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 {
@@ -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 {
@@ -77,7 +77,8 @@ pub fn Login(props: &LoginProps) -> Html {
                         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;
                         }
@@ -172,7 +173,11 @@ 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> {
     use crate::auth::{AuthService, CalDAVLoginRequest};
     use serde_json;
 
@@ -182,7 +187,7 @@ async fn perform_login(server_url: String, username: String, password: String) -
     let request = CalDAVLoginRequest {
         server_url: server_url.clone(),
         username: username.clone(),
-        password: password.clone() 
+        password: password.clone(),
     };
 
     web_sys::console::log_1(&format!("🚀 Sending login request to backend...").into());
@@ -197,10 +202,10 @@ async fn perform_login(server_url: String, username: String, password: String) -
                 "password": password
             });
             Ok((response.token, credentials.to_string()))
-        },
+        }
         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, EditAction};
 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 {
@@ -72,7 +72,10 @@ pub fn month_view(props: &MonthViewProps) -> Html {
             }) 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();
                 }
             }
@@ -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 };
+    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>()
+    (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()

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 {
@@ -25,7 +25,12 @@ 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();

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,
 }
@@ -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 {
@@ -33,7 +33,6 @@ pub enum Theme {
 }
 
 impl Theme {
-    
     pub fn value(&self) -> &'static str {
         match self {
             Theme::Default => "default",

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]
@@ -47,16 +57,14 @@ 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>);
@@ -75,8 +83,11 @@ pub fn week_view(props: &WeekViewProps) -> 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();
                 }
             }
@@ -85,22 +96,23 @@ 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 = {
         let pending_recurring_edit = pending_recurring_edit.clone();
@@ -141,16 +153,16 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                             // 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"
                         //
@@ -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()) {
@@ -189,7 +202,13 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                                 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;
@@ -207,9 +226,12 @@ pub fn week_view(props: &WeekViewProps) -> Html {
 
                             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();
@@ -220,9 +242,15 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                             };
 
                             // 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"),
@@ -243,24 +271,32 @@ pub fn week_view(props: &WeekViewProps) -> Html {
                             // 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);
@@ -988,7 +1024,6 @@ fn pixels_to_time(pixels: f64) -> NaiveTime {
     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);
@@ -1009,7 +1044,6 @@ fn calculate_event_position(event: &VEvent, date: NaiveDate) -> (f32, f32, bool)
     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);

frontend/src/main.rs

@@ -1,4 +1,3 @@
-
 mod app;
 mod auth;
 mod components;