feat(integrations): scrobble to Last.fm, Libre.fm and ListenBrainz

.github/workflows/build.yml

@@ -270,6 +270,10 @@ jobs:
         run: node scripts/write-nightly-config.mjs
 
       - name: Build nightly packages
+        env:
+          # Read at compile time; without them Last.fm sign-in stays off in the build.
+          LASTFM_API_KEY: ${{ secrets.LASTFM_API_KEY }}
+          LASTFM_API_SECRET: ${{ secrets.LASTFM_API_SECRET }}
         run: pnpm tauri build ${{ matrix.args }} --config src-tauri/tauri.nightly.generated.json
 
       - name: Log the bundled media stack versions

.github/workflows/release.yml

@@ -211,6 +211,9 @@ jobs:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           TAURI_SIGNING_PRIVATE_KEY: ${{ secrets.TAURI_SIGNING_PRIVATE_KEY }}
           TAURI_SIGNING_PRIVATE_KEY_PASSWORD: ${{ secrets.TAURI_SIGNING_PRIVATE_KEY_PASSWORD }}
+          # Read at compile time; without them Last.fm sign-in stays off in the build.
+          LASTFM_API_KEY: ${{ secrets.LASTFM_API_KEY }}
+          LASTFM_API_SECRET: ${{ secrets.LASTFM_API_SECRET }}
         with:
           tagName: ${{ needs.prepare.outputs.tag }}
           releaseName: ${{ needs.prepare.outputs.is_prerelease == 'true' && 'Flow Beta v__VERSION__' || 'Flow v__VERSION__' }}

changelog/v0.1.0-beta3.txt

@@ -46,6 +46,9 @@ MUSIC
 - A new "Resume long tracks" setting, off by default, starts mixes, podcasts and episodes of 10 minutes or more where you left them.
 - Music controls in the menu bar or system tray: the current song on top, then Play or Pause, Previous, Next and Show Flow. Turn it off under Integrations with Show music controls in the tray.
 - On Linux the tray is off by default and needs the libayatana-appindicator3 library, which the .deb, .rpm and AppImage now bring along. Without it the switch stays off instead of stopping Flow from starting.
+- Scrobbling to Last.fm, Libre.fm and ListenBrainz, under Integrations. A song counts once you have heard half of it or four minutes, and songs of 30 seconds or less never count. Videos are never sent.
+- Listens wait on your computer while you are offline and go out once you are back, up to 2,000 per service. Show now playing, Love liked songs and Scrobble during Deep Flow are options, and you can use your own Last.fm API key.
+- Your Last.fm password is sent once and never stored. Sessions and tokens are kept in the system keychain, never in sync, backups or settings exports.
 
 AUDIO
 - Equalizer boosts no longer distort: the music equalizer turns the whole curve down by its highest boost before the filters, and a soft limiter bends any peak that still goes past full scale.

src-tauri/Cargo.toml

@@ -51,7 +51,7 @@ tracing-subscriber = { version = "0.3", features = ["env-filter"] }
 tracing-appender = "0.2"
 
 # HTTP Client
-reqwest = { version = "0.13.3", features = ["stream", "json", "brotli", "gzip", "rustls"] }
+reqwest = { version = "0.13.3", features = ["stream", "json", "form", "brotli", "gzip", "rustls"] }
 mp4 = "0.14"
 webm-iterable = "0.6.2"
 
@@ -76,6 +76,11 @@ hmac = "0.13"
 sha2 = "0.11"
 rand = "0.10"
 zeroize = { version = "1", features = ["derive"] }
+# Scrobbling: Last.fm's api_sig is an MD5 digest, and session keys and tokens live in the OS
+# keychain (macOS Keychain, Windows Credential Manager, the Secret Service on Linux).
+md-5 = "0.11"
+keyring = "4"
+
 # Local Sync (P2P) — transport: plaintext WebSocket (payload is AES-GCM encrypted), gzip
 # compression (parity with Android java.util.zip), and LAN IP discovery for the QR.
 tokio-tungstenite = "0.30"

src-tauri/migrations/0020_scrobble_queue.sql

@@ -0,0 +1,27 @@
+-- Listens and loves waiting to reach Last.fm, Libre.fm or ListenBrainz (Flow for Android's
+-- ScrobbleStore queues). A listen is queued the moment it counts and leaves once the service
+-- accepts it, so quitting or going offline loses nothing. Device-local, never synced or backed up.
+-- service: LASTFM, LIBREFM or LISTENBRAINZ. Each service keeps at most 2,000 rows of each kind.
+CREATE TABLE IF NOT EXISTS scrobble_queue (
+    id            INTEGER PRIMARY KEY AUTOINCREMENT,
+    service       TEXT    NOT NULL,
+    artist        TEXT    NOT NULL,
+    title         TEXT    NOT NULL,
+    album         TEXT    NOT NULL DEFAULT '',
+    duration_sec  INTEGER NOT NULL DEFAULT 0,
+    timestamp_sec INTEGER NOT NULL,
+    from_youtube  INTEGER NOT NULL DEFAULT 1
+);
+
+CREATE INDEX IF NOT EXISTS idx_scrobble_queue_service ON scrobble_queue (service, id);
+
+-- Likes and unlikes to mirror as loves; Last.fm and Libre.fm only.
+CREATE TABLE IF NOT EXISTS scrobble_loves (
+    id      INTEGER PRIMARY KEY AUTOINCREMENT,
+    service TEXT    NOT NULL,
+    artist  TEXT    NOT NULL,
+    title   TEXT    NOT NULL,
+    loved   INTEGER NOT NULL
+);
+
+CREATE INDEX IF NOT EXISTS idx_scrobble_loves_service ON scrobble_loves (service, id);

src-tauri/src/commands/mod.rs

@@ -11,6 +11,7 @@ pub mod music_queue;
 pub mod notifications;
 pub mod pip;
 pub mod recommendation;
+pub mod scrobble;
 pub mod shorts;
 pub mod sync;
 pub mod tray;