Added exact artist matching

.gitignore

@@ -1,3 +1,3 @@
 /target
 .env
-playlists.db
+drift.db

Cargo.lock

@@ -190,6 +190,23 @@ version = "0.15.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1aaf95b3e5c8f23aa320147307562d361db0ae0d51242340f558153b4eb2439b"
 
+[[package]]
+name = "drift"
+version = "0.1.0"
+dependencies = [
+ "clap",
+ "crossterm",
+ "dotenvy",
+ "lofty",
+ "rand",
+ "rusqlite",
+ "serde",
+ "serde_json",
+ "ureq",
+ "urlencoding",
+ "walkdir",
+]
+
 [[package]]
 name = "errno"
 version = "0.3.14"
@@ -463,23 +480,6 @@ version = "0.3.32"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7edddbd0b52d732b21ad9a5fab5c704c14cd949e5e9a1ec5929a24fded1b904c"
 
-[[package]]
-name = "playlists"
-version = "0.1.0"
-dependencies = [
- "clap",
- "crossterm",
- "dotenvy",
- "lofty",
- "rand",
- "rusqlite",
- "serde",
- "serde_json",
- "ureq",
- "urlencoding",
- "walkdir",
-]
-
 [[package]]
 name = "ppv-lite86"
 version = "0.2.21"

Cargo.toml

@@ -1,5 +1,5 @@
 [package]
-name = "playlists"
+name = "drift"
 version = "0.1.0"
 edition = "2024"
 

README.md

@@ -0,0 +1,72 @@
+# drift
+
+Discovers similar artists via Last.fm and builds playlists from your local music library. Point it at a directory, pick a seed artist, and get a playlist of tracks weighted by artist similarity and popularity.
+
+## Metadata requirements
+
+Your music files need **MusicBrainz artist IDs** in their tags (`MUSICBRAINZ_ARTISTID`). Without these, tracks are skipped during indexing. Track titles help with popularity scoring — drift matches them against Last.fm's top tracks to bias toward well-known songs.
+
+Most taggers (Picard, beets, etc.) can write MusicBrainz IDs automatically.
+
+## Setup
+
+You need a Last.fm API key. Create one at https://www.last.fm/api/account/create, then set it:
+
+```
+echo 'LASTFM_API_KEY=your_key_here' > .env
+```
+
+Or export it directly — drift loads `.env` automatically via dotenvy.
+
+## Usage
+
+### Index your library
+
+```
+drift index /path/to/music
+```
+
+Scans for tagged files, fetches similar artists and top tracks from Last.fm, and stores everything in a local SQLite database (`~/.local/share/drift/drift.db`).
+
+Flags:
+- `-v` — print progress
+- `-f` — re-index artists that were already indexed
+
+### Build a playlist
+
+```
+drift build
+```
+
+Opens an interactive picker to choose a seed artist. Or pass an artist name directly:
+
+```
+drift build "Radiohead"
+```
+
+Flags:
+- `-n 30` — number of tracks (default 20)
+- `-p 8` — popularity bias, 0–10 (default 5, higher = prefer popular tracks)
+- `-s` — interleave artists evenly instead of score order
+- `-r` — fully randomize track order
+- `-v` — print track scores to stderr
+
+### Output
+
+By default, drift prints file paths to stdout — pipe it wherever you want.
+
+#### MPD
+
+```
+drift build -m
+```
+
+Queues tracks directly in MPD. Requires `MPD_HOST` and `MPD_MUSIC_DIR` environment variables.
+
+#### Airsonic
+
+```
+drift build -a
+```
+
+Creates a playlist in Airsonic/Navidrome. Requires `AIRSONIC_URL`, `AIRSONIC_USER`, and `AIRSONIC_PASS` environment variables.

scripts/search.py

@@ -1,5 +1,5 @@
 #!/usr/bin/env python3
-"""Fuzzy search artists in playlists.db and show their similar artists."""
+"""Fuzzy search artists in drift.db and show their similar artists."""
 
 import curses
 import os
@@ -9,9 +9,9 @@ from pathlib import Path
 
 
 def find_db():
-    """Find playlists.db in XDG data dir."""
+    """Find drift.db in XDG data dir."""
     data_home = os.environ.get("XDG_DATA_HOME", Path.home() / ".local" / "share")
-    p = Path(data_home) / "playlists" / "playlists.db"
+    p = Path(data_home) / "drift" / "drift.db"
     if p.exists():
         return str(p)
     print(f"Could not find {p}", file=sys.stderr)

src/main.rs

@@ -16,7 +16,7 @@ use rand::prelude::*;
 use playlist::Candidate;
 
 #[derive(Parser)]
-#[command(name = "playlists")]
+#[command(name = "drift")]
 struct Cli {
     #[command(subcommand)]
     command: Command,
@@ -58,8 +58,8 @@ enum Command {
         /// Popularity bias (0=no preference, 10=heavy popular bias)
         #[arg(short, default_value_t = 5, value_parser = clap::value_parser!(u8).range(0..=10))]
         popularity: u8,
-        /// Seed file (or pick interactively)
+        /// Artist name to seed (or pick interactively)
-        file: Option<String>,
+        artist: Option<String>,
     },
 }
 
@@ -88,9 +88,9 @@ fn db_path() -> PathBuf {
             let home = env::var("HOME").expect("HOME not set");
             PathBuf::from(home).join(".local/share")
         });
-    let dir = data_dir.join("playlists");
+    let dir = data_dir.join("drift");
     std::fs::create_dir_all(&dir).expect("failed to create data directory");
-    dir.join("playlists.db")
+    dir.join("drift.db")
 }
 
 fn main() {
@@ -100,11 +100,11 @@ fn main() {
         Command::Index { verbose, force, directory } => {
             cmd_index(verbose, force, &directory);
         }
-        Command::Build { verbose, mpd, airsonic, shuffle, random, count, popularity, file } => {
+        Command::Build { verbose, mpd, airsonic, shuffle, random, count, popularity, artist } => {
             let opts = BuildOptions {
                 verbose, mpd, airsonic, shuffle, random, count, popularity_bias: popularity,
             };
-            cmd_build(opts, file.as_deref());
+            cmd_build(opts, artist.as_deref());
         }
     }
 }
@@ -195,29 +195,37 @@ fn cmd_index(verbose: bool, force: bool, directory: &str) {
     }
 }
 
-fn cmd_build(opts: BuildOptions, file: Option<&str>) {
+fn resolve_artist(artists: &[(String, String)], query: &str) -> Option<(String, String)> {
+    let q = query.to_lowercase();
+
+    // Tier 1: exact case-insensitive match
+    for (mbid, name) in artists {
+        if name.to_lowercase() == q {
+            return Some((mbid.clone(), name.clone()));
+        }
+    }
+
+    // Tier 2: contains case-insensitive
+    for (mbid, name) in artists {
+        if name.to_lowercase().contains(&q) {
+            return Some((mbid.clone(), name.clone()));
+        }
+    }
+
+    // Tier 3: subsequence fuzzy match
+    for (mbid, name) in artists {
+        if tui::fuzzy_match(&q, name) {
+            return Some((mbid.clone(), name.clone()));
+        }
+    }
+
+    None
+}
+
+fn cmd_build(opts: BuildOptions, artist: Option<&str>) {
     dotenvy::dotenv().ok();
     let conn = db::open(&db_path()).expect("failed to open database");
 
-    let (artist_mbid, seed_name) = if let Some(file_arg) = file {
-        let path = Path::new(file_arg);
-        let mbid = match metadata::read_artist_mbid(path) {
-            Ok(Some(mbid)) => mbid,
-            Ok(None) => {
-                eprintln!("{}: no artist MBID found", path.display());
-                std::process::exit(1);
-            }
-            Err(e) => {
-                eprintln!("{}: could not read artist MBID: {e}", path.display());
-                std::process::exit(1);
-            }
-        };
-        let name = metadata::read_artist_name(path)
-            .ok()
-            .flatten()
-            .unwrap_or_else(|| mbid.clone());
-        (mbid, name)
-    } else {
     let artists = match db::get_all_artists(&conn) {
         Ok(a) => a,
         Err(e) => {
@@ -229,6 +237,19 @@ fn cmd_build(opts: BuildOptions, file: Option<&str>) {
         eprintln!("No artists in database. Run 'index' first.");
         std::process::exit(1);
     }
+
+    let (artist_mbid, seed_name) = if let Some(query) = artist {
+        match resolve_artist(&artists, query) {
+            Some((mbid, name)) => {
+                eprintln!("Matched: {name}");
+                (mbid, name)
+            }
+            None => {
+                eprintln!("No artist matching \"{query}\"");
+                std::process::exit(1);
+            }
+        }
+    } else {
         match tui::run_artist_picker(&artists) {
             Some(selection) => selection,
             None => std::process::exit(0),

src/metadata.rs

@@ -22,14 +22,6 @@ impl Tag {
     }
 }
 
-fn read_tag(path: &Path, key: ItemKey) -> Result<Option<String>, lofty::error::LoftyError> {
-    let tagged_file = lofty::read_from_path(path)?;
-    let Some(tag) = tagged_file.primary_tag().or_else(|| tagged_file.first_tag()) else {
-        return Ok(None);
-    };
-    Ok(tag.get_string(key).map(String::from))
-}
-
 /// Read multiple tags from a music file in a single file open.
 /// Returns a Vec in the same order as the input keys.
 pub fn read_tags(path: &Path, keys: &[Tag]) -> Result<Vec<Option<String>>, lofty::error::LoftyError> {
@@ -43,11 +35,4 @@ pub fn read_tags(path: &Path, keys: &[Tag]) -> Result<Vec<Option<String>>, lofty
         .collect())
 }
 
-pub fn read_artist_name(path: &Path) -> Result<Option<String>, lofty::error::LoftyError> {
-    read_tag(path, ItemKey::TrackArtist)
-}
-
-pub fn read_artist_mbid(path: &Path) -> Result<Option<String>, lofty::error::LoftyError> {
-    read_tag(path, ItemKey::MusicBrainzArtistId)
-}
 

src/tui.rs

@@ -8,7 +8,7 @@ use crossterm::{
     terminal::{self, ClearType},
 };
 
-fn fuzzy_match(query: &str, name: &str) -> bool {
+pub fn fuzzy_match(query: &str, name: &str) -> bool {
     let name_lower = name.to_lowercase();
     let mut chars = name_lower.chars();
     for qch in query.chars() {