Final slice of the per-item rendering pass. Wraps every tile widget
in an AnimatedSwitcher between the skeleton placeholder and the real
card. 220ms cross-fade with easeOut: tiles "settle into place"
rather than hard-cutting from shimmer to content. Since each tile
fades independently as its data lands — and the HydrationQueue's
concurrency cap drains in a natural cascade — the overall feel is
the staged "page builds piece by piece" effect we wanted, with no
per-tile position math required.
Bumps CachedNetworkImage fadeInDuration from zero to 120ms (server_
image.dart, discover_screen.dart). Imperceptible on cache hits since
the image decodes synchronously; on cache misses the bytes fade in
smoothly instead of popping. Slice 1's "zero fade" call was right
about the 500ms default being a regression, but 120ms threads the
needle.
Playlist detail wraps its body in the same AnimatedSwitcher so the
cold-load skeleton page cross-fades into the real track list.
Tiles affected: home _AlbumTile / _ArtistTile / _TrackTile + liked
_LikedAlbumTile / _LikedArtistTile / _LikedTrackRow + playlist
_SkeletonBody / _Body. All keyed via ValueKey so AnimatedSwitcher
detects the transition.
End of the per-item pass. Net behavior: cold visits paint shaped
pages instantly with skeletons, content cascades in as hydration
lands; warm visits paint fully from drift in the first frame.
The three liked-tab providers now yield ordered lists of entity IDs
(read from cached_likes ORDER BY likedAt DESC). The UI renders
per-tile widgets that hydrate each entity individually via
albumTileProvider / artistTileProvider / trackTileProvider.
fetchAndPopulate dropped from the per-provider bulk endpoints to a
single shared call against /api/likes/ids — much cheaper, and the
tile providers handle entity hydration themselves. The bulk
/api/likes/{tracks,albums,artists} endpoints are no longer in the
Flutter cold path (server keeps serving them for web compat).
Cross-device SSE invalidate paths preserved so cross-device likes
still feel instant. Local LikesController mutations propagate via
cached_likes optimistic writes — same drift watch() route as before.
Tap-to-play on a track row uses currently-hydrated TrackRefs as the
play queue; still-loading tracks are skipped and join on next
rebuild as hydrations land.
Cold-visit playlist detail used to render the header from the seed
and then a single CircularProgressIndicator while the bulk fetch
ran. Now it renders the header + seed.trackCount worth of skeleton
rows (capped at 8 when no seed is present). The real list swaps in
without a layout jump.
Slice D was originally scoped for per-track hydration through a new
discovery endpoint, but the unavailable-entries data model (playlist
rows that lost their underlying track to deletion / quarantine) make
that disproportionately expensive — would require a schema change to
support null trackIds on cached_playlist_tracks, a server endpoint,
and a screen rewrite. The skeleton-row approach captures ~80% of the
perceptual win at a fraction of the cost. True per-track hydration
remains a future opportunity if cold visits to very large playlists
still feel sluggish after Slice F polish lands.
End-to-end pilot of the per-item architecture. Home now reads from
the new homeIndexProvider (drift-first over CachedHomeIndex with
/api/home/index discovery + SWR), then each tile is a small
ConsumerWidget watching its own albumTileProvider/artistTileProvider/
trackTileProvider. Tiles render a matched-dimension skeleton while
their entity is still hydrating, and swap in the real card once
drift emits the populated row.
Track hydration is wired up — /api/tracks/:id already existed so
the queue's case 'track' just calls api.getTrack(id) and persists.
The visible behavior:
* Cold visit: small /api/home/index round-trip (IDs only, ~10×
smaller than /api/home), then sections appear shaped with
skeleton tiles; each tile materializes as the hydration queue
drains. No more "30s blank → everything pops in at once."
* Warm visit: drift index emits instantly, drift entity rows emit
instantly, no network. Page paints fully in the first frame.
* Mid-state: scrolling through a partially-hydrated section sees
real cards next to skeleton cards. Layout doesn't shift because
skeletons match real-card dimensions exactly.
CachedHomeSnapshot (and the legacy homeProvider) stay in place but
unconsumed by Flutter — left in for now so revert is cheap if the
new path needs reworking. Cleanup follow-up in a later slice.
Old /api/home endpoint untouched, so the web client keeps working
unchanged.
Slice A landed with three transitive imports that the analyzer
correctly flagged as unused. AppDb / CachedAlbums table refs
propagate through audio_cache_manager.dart's `show appDbProvider`
re-export chain so the explicit db.dart import in the consumers
is redundant.
Plumbing for the per-item rendering pass — no UI changes yet, just
the layers the home/playlist/liked migrations will sit on.
* CachedHomeIndex drift table (schema 5→6) — section/position →
entity-id rows, populated by the upcoming /api/home/index endpoint.
* HydrationQueue (concurrency=4, in-flight dedup) — bounded request
pump that takes (entityType, entityId) and persists the result to
the right cached_<entity> table. Albums + artists wired today;
tracks deferred until /api/tracks/:id exists.
* Per-entity tile providers (albumTileProvider, artistTileProvider,
trackTileProvider as StreamProvider.family) — watch drift, enqueue
hydration on miss, yield AsyncValue<EntityRef?>.
* Skeleton widgets (album/artist/track) matched to the real card
dimensions with a 1.2s shimmer sweep using FabledSword tokens. No
shimmer-package dep — single AnimationController per surface.
See docs/superpowers/specs/2026-05-13-per-item-rendering-design.md
for the full architecture rationale.
Final slice of the smooth-loading pass. Adds CachedQuarantineMine
(schema 5, columnar so flag/unflag can do row-level mutation) and
rewires MyQuarantineController to read from drift via watch() + SWR
refresh; flag/unflag write drift first and roll back on REST failure.
Public API (.flag / .unflag / .isHidden) unchanged so existing call
sites (library_screen Hidden tab, TrackActionsSheet) keep working.
Tests updated to match: bypassed-build-via-_StubController approach
no longer makes sense now that state lives in drift, so the suite is
rewritten against NativeDatabase.memory() with the same libsqlite3
skip the sync_controller suite uses on the CI runner.
The Hidden tab now paints from disk on cold open, the list is
queryable offline, and a flag from another device that arrived in
this user's quarantine via SSE-triggered invalidate lands the same
way as a local flag.
Slice 4 of the smooth-loading pass. Adds CachedHistorySnapshot
(schema 4) and rewires _historyProvider through cacheFirst, mirroring
the homeProvider pattern: yield the last cached page immediately on
subscribe so the tab paints from disk on cold open, then SWR-refresh
in the background to surface fresh plays.
Also enables basic offline scrollback — the most recent History page
survives both app restart and connectivity loss.
JSON blob storage (vs columnar) because the page is small, always
read whole, and HistoryPage.fromJson already accepts the wire shape,
so server-side field additions don't force a migration.
History delta sync via library_changes is out of scope here; the next
visit's SWR pull is the source of freshness for now.
Slice 3 of the smooth-loading pass. The three _likedTracksProvider /
_likedAlbumsProvider / _likedArtistsProvider entries on the Library
screen migrate from FutureProvider+REST to StreamProvider+cacheFirst.
Reads now flow from cached_likes joined against the metadata tables
SyncController already keeps fresh; LikesController's optimistic drift
write makes toggling a like re-emit these streams instantly without a
REST round-trip. Cold-cache fallback hits /api/likes/* when drift is
empty (fresh install pre-first-sync). SWR refresh on each visit catches
likes from other devices that haven't propagated via library_changes
yet.
The original FutureProvider versions fetched the first 50 rows. Drift
returns everything cached_likes knows about — for typical libraries
that's the full liked list. Pagination can come back when liked lists
are big enough to matter.
Like/unlike SSE invalidation paths preserved so cross-device updates
still feel real-time, even when the sender's library_changes hasn't
landed here yet.
Slice 2 of the cover-caching pass. SyncController now downloads cover
bytes for newly-upserted albums + playlists into the shared
flutter_cache_manager disk cache after each sync transaction commits.
A cold-start scroll through the home grid paints from disk on the very
first frame instead of firing one HTTP per visible tile.
Best-effort: fire-and-forget after commit, concurrency 3, per-URL
failures swallowed (404 for collages that haven't built yet, 401
during token-refresh races). Artist covers skipped — ArtistRef.coverUrl
is server-derived from "most-recent album" and not reconstructible
client-side; album pre-warm already covers the artist's primary visual.
Auth header reuses sessionTokenProvider for parity with ServerImage.
Slice 1 of the cover-caching pass. The previous Image.network /
NetworkImage path only cached covers in memory, so a scroll-off + scroll-
back or an app restart re-downloaded every tile from the server. Swap
to cached_network_image so bytes land on disk (path_provider temp dir,
URL-keyed) and survive both.
Sites migrated:
- ServerImage (all /api/*/cover usage — home grid, library, playlist,
artist/album detail headers)
- DiscoverScreen Lidarr suggestion thumbnails
- PlayerBar mini cover (HTTPS branch; file:// branch unchanged since
AlbumCoverCache files are already on disk)
Auth header forwarding preserved via httpHeaders. Fade-in disabled so
populated grids paint instantly on cache hit.
Slice 2 (pre-warm during sync) builds on this same cache manager.
Drops the staleness gate from 1h to 1m and adds a Timer.periodic that
fires recheckIfStale every minute while the app is foregrounded. Net
effect: ~1 check per minute of active use, ~60 KB/hr data — trivially
affordable for the value of faster recovery when min_client_version
bumps server-side.
Timer is paired with the lifecycle observer: started in initState +
on resume, stopped in dispose + on pause/inactive/hidden/detached so
backgrounded apps don't burn battery on probes the user can't see.
Staleness gate still wraps the call so concurrent triggers (timer +
resume firing close together) dedupe to one network call. Manual
"Check now" still bypasses the gate via recheck().
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Cold-start spinner was up to ~38s on slow / remote connections
because VersionGate blocked the entire ShellRoute on /healthz, with
the default dio's 8s connect + 30s receive timeouts. The /healthz
server handler itself is fine (microsecond JSON encode); the blocker
was client-side. Three issues fixed in one pass:
1. Optimistic render. VersionGate becomes a ConsumerStatefulWidget
that always renders its child and just activates the version
check controller on mount. The "you're too old" experience moves
from a full-screen hard-block (_TooOldScreen, deleted) to a soft
banner above the AppBar that lets the user keep playing cached
content while they update.
2. 1h-throttled background check. New VersionCheckController
(AsyncNotifier) hydrates from a secure-storage cache on boot,
returning the cached result instantly. If the cache is missing
or >1h old, fires a background recheck. AppLifecycleState.resumed
triggers recheckIfStale so foregrounding after >1h re-checks
without per-frame hammering. "Check now" button on the banner
bypasses the staleness gate so dev iteration (push new APK, want
to see banner clear) doesn't wait an hour.
3. Bounded health-check dio. The /healthz request uses a dedicated
dio with connectTimeout: 3s + receiveTimeout: 2s rather than the
default 8s / 30s. Health probes should fail fast — if the server
can't ack in 5s, the user has bigger problems than a stale
min_client_version and the cached value remains in effect.
Cache keys live alongside the existing tz cadence cache in
flutter_secure_storage (kResult + kAtMs). On any network error or
parse failure, _runCheck soft-fails without bumping the timestamp,
so the next staleness check will retry.
VersionTooOldBanner renders in _ShellWithPlayerBar's Column above
the existing UpdateBanner — the two coexist when both apply
(server rejects you AND an APK is queued).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Home screen is the first surface on app open; without a local cache
the cold-start blocks on /api/home, which dominates felt latency on
slow or remote connections. This commit caches the last successful
HomeData as a single-row JSON blob in drift, so subsequent app opens
yield content immediately and revalidate in the background.
Schema:
- New CachedHomeSnapshot table (single row: id=1, json TEXT,
updated_at). schemaVersion bumped 2 → 3 with a forward migration
that calls m.createTable(cachedHomeSnapshot). Codegen regenerated
via build_runner; the *.g.dart files are gitignored and rebuilt
by the CI Codegen step.
Provider rewrite:
- homeProvider: FutureProvider<HomeData> → StreamProvider<HomeData>
using the existing cacheFirst<CachedHomeSnapshotData, HomeData>
pattern (alwaysRefresh: true for SWR). On cold cache the first
/api/home fetch populates the row. On warm cache the cached
HomeData is yielded immediately and a background REST fetch
overwrites the row, which drift's watch() picks up.
- Encoder helpers (_albumToJson / _artistToJson / _trackToJson) so
HomeData survives the JSON round-trip into and out of drift.
Field names match the server's /api/home wire shape exactly so
HomeData.fromJson handles both fresh server responses and cached
drift rows.
Callers untouched: home_screen.dart's ref.watch + ref.refresh +
metadata_prefetcher's ref.listen all keep working with the
StreamProvider shape (AsyncValue<HomeData> stays the surface type).
Test fix: 4 homeProvider.overrideWith sites in home_screen_test.dart
switched from `(ref) async => _emptyHome` (FutureProvider form) to
`(ref) => Stream.value(_emptyHome)` (StreamProvider form).
For #357. Completes the user-visible deferred follow-up. Remaining
deferred items: library_changes server-side retention.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
#392's dispatcher only invalidates publicly-importable providers
(myQuarantine + home). Screen-scoped providers (file-private in their
feature folders) get their own ref.listen(liveEventsProvider, ...) so
they go live without needing back-edge dependencies from /shared.
Five screens wired:
- library_screen.dart _LikedTab — invalidates _likedTracksProvider /
_likedAlbumsProvider / _likedArtistsProvider on any of the six
track/album/artist like/unlike kinds.
- playlist_detail_screen.dart — invalidates playlistDetailProvider(id)
on playlist.updated / playlist.tracks_changed matching the visible
playlist_id. On playlist.deleted matching the visible id, pops back
so the user isn't left staring at a gone playlist.
- admin_requests_screen.dart — invalidates adminRequestsProvider on
request.status_changed (covers user create/cancel + admin
approve/reject + reconciler complete).
- admin_quarantine_screen.dart — invalidates adminQuarantineProvider
on any quarantine.* event (flag from a user / admin resolve / file
delete / lidarr delete).
- requests_screen.dart (own requests) — invalidates myRequestsProvider
on request.status_changed. Server-side events are user-scoped via
publishRequestStatusChanged's row.UserID, so admin actions on
someone else's request route to the right stream.
History tab is NOT wired (no server-side play.scrobbled event yet —
documented in #402 body as deferred until that event ships).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Cross-platform consistency: when a track is currently playing, its row
on the album / liked / history / search / playlist detail surfaces
gets the same accent-border + bg-lift treatment that QueueTrackRow
applies on the queue panel. Closes the inconsistency caught during
the #375 DRY audit (the queue row had a "you are here" indicator;
other track-row surfaces did not).
Web — TrackRow.svelte + PlaylistTrackRow.svelte:
isCurrent = player.current?.id === track.id
→ border-l-2 border-l-accent bg-surface-hover when true.
PlaylistTrackRow additionally gates on !isUnavailable so deleted
rows never match a phantom playing id.
Flutter — TrackRow + _PlaylistTrackRow:
TrackRow becomes a ConsumerWidget, watches mediaItemProvider, and
wraps its InkWell in a Container whose BoxDecoration carries the
fs.iron background + 2px fs.accent left border when current. Title
text also shifts to fs.accent and FontWeight.w500. Same pattern for
_PlaylistTrackRow.
No "Now playing" pill on these surfaces — the player bar already
names the track, so the accent band alone reads as enough cue.
For #401 / #356 umbrella.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Two issues caught by flutter analyze --fatal-infos:
- dart:ui import in album_color_extractor.dart was redundant because
flutter/painting re-exports the Color it provides. Dropped.
- valueOrNull isn't on AsyncValue in this Riverpod version (the
AsyncValue<Color?> nesting may also have confused the resolver).
Switched to asData?.value which always returns the wrapped value
on AsyncData and null on Loading/Error.
(palette_generator's "discontinued" warning is non-fatal informational
in pub; CI didn't fail on it. The package still works; alternative
swaps deferred until it actually breaks.)
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Three of the four locked items (1, 2, 4); item 6 (swipe-tabs) stays
deferred until server-side lyrics ingestion exists.
1. Dominant-color gradient backdrop. New album_color_extractor.dart
wraps the existing AlbumCoverCache: extracts the dominant color
via PaletteGenerator over the local file, caches in-memory keyed
by album_id. Top 55% of the screen carries the color (0.55 alpha
→ fs.obsidian) so controls below stay legible. AnimatedContainer
tweens the gradient across track changes.
2. Hero transition for cover art (mini bar → full screen). Stable
kPlayerCoverHeroTag (not media.id keyed) so the transition works
regardless of what's playing and isn't racy if media swaps mid-tap.
flightShuttleBuilder renders the destination's Hero widget for the
whole flight, which reads as a clean grow rather than a swap.
4. Crossfade on track change. AnimatedSwitcher around the album art,
title, and artist+album text block, all keyed by media.id so the
switcher fades between old and new on each track-change rebuild.
Pairs with the AnimatedContainer gradient so the whole "what's
playing" zone changes in lockstep.
palette_generator: ^0.3.3 added.
For #396 / #356 umbrella.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
PlaylistTrack.streamUrl is String? (nullable when track is unavailable
post-delete); TrackRef.streamUrl is required String. flutter analyze
caught the mismatch. Coalesce to empty string for unavailable rows —
they're already filtered out by the trackId != null check earlier in
the loop, so this branch is effectively unreachable but keeps the
type-checker happy.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
AlbumCard / ArtistCard / PlaylistCard gain a 44dp circular play
button overlaid bottom-right of the cover art. Mirrors the
hover-revealed .play-overlay on the web cards; always visible
because hover is not a real interaction on touch.
Per-card semantics match the web:
- AlbumCard: fetches /api/albums/{id}, starts playback from track 0.
- ArtistCard: fetches /api/artists/{id}/tracks, Fisher-Yates shuffles,
plays from index 0 (matches web's playQueue(shuffle(tracks), 0)).
- PlaylistCard: fetches /api/playlists/{id}, materializes available
rows into TrackRef, plays from index 0. Disabled state when
trackCount == 0 — semi-transparent button, taps ignored.
Shared PlayCircleButton widget manages loading state (spinner during
fetch) so each card's onPressed can stay async without re-entrancy
guards. Cards become ConsumerWidget so they can reach the
playerActionsProvider + relevant API providers; constructor surface
unchanged so existing call sites (artist_detail, library_screen,
home_screen) keep working.
CompactTrackCard unchanged — its tap already plays-from-here.
For #393 / #356 umbrella.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Flutter client posts FlutterTimezone.getLocalTimezone() to
PUT /api/me/timezone on every setSession (login / register success)
and on every AuthController.build (app cold-start with valid
session), when the locally-stored tz_last_sent_at is >7 days old.
Cadence tracked in flutter_secure_storage so it survives app
restarts.
Failures swallowed: the server's UTC default + last-known value
keep the scheduler functioning until the next attempt.
Completes the client side of #392 Half B (per-user timezone
scheduling).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Slice 4 — completes the #392 hybrid live-refresh loop.
live_events_provider.dart subscribes to /api/events/stream via dio's
streaming response mode, parses SSE frames (kind + JSON data + UserID
scope), and exposes them as a Riverpod StreamProvider. Heartbeat
comments are silently dropped; malformed JSON frames are skipped. The
provider auto-rebuilds when auth state changes (token rotation,
sign-out → sign-in), so reconnect is implicit.
live_events_dispatcher.dart listens to the stream and invalidates the
small set of publicly-importable providers we know about:
- myQuarantineProvider + homeProvider on any quarantine.* event
- homeProvider on any playlist.* event (Home renders the Playlists row)
Screen-private providers (library_screen.dart's _liked* /
_libraryAlbums / _history, admin screens, etc.) opt in to live-refresh
by themselves listening to liveEventsProvider in follow-up commits;
the dispatcher stays small and avoids back-edge dependencies on every
feature folder.
The dispatcher also installs an AppLifecycleState observer for
resume-time defensive invalidation. SSE will catch up on its own when
the app returns from background, but the invalidate flushes any stale
data immediately so the first frame back is fresh.
app.dart wires the dispatcher into the post-first-frame callback
alongside the other startup activations.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Three small parity gaps in _HiddenTab vs the web /library/hidden page:
- No unhide affordance — once a track was flagged via the kebab, the only
way to reverse it was to find the track in another surface and toggle
via the kebab again. Added an Icons.restore IconButton on each tile that
calls myQuarantineProvider.notifier.unflag(trackId) (the optimistic
remove-with-rollback already lived on the notifier).
- No album cover art — added a 56px ServerImage thumb matching the web
page's 14×14 thumb, with the same fs.slate fallback compact_track_card
uses for missing covers.
- No relative timestamp — appended _relativeTime(row.createdAt) next to
the reason pill so the user can tell "I hid this 3d ago" at a glance.
Also collapsed the duplicate provider: _HiddenTab was watching a local
FutureProvider that didn't see flag/unflag mutations, while the kebab's
HideTrackSheet flow goes through the canonical myQuarantineProvider
(AsyncNotifier). Switched _HiddenTab to watch myQuarantineProvider so
flag-from-anywhere and unhide-from-the-tab stay in sync. The local
_quarantineProvider was deleted; one source of truth now.
Caught during the #375 DRY audit cross-check against the #356 inventory.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Two unrelated issues, batched.
Full-player kebab → "Go to album/artist" still crashed with
_debugCheckDuplicatedPageKeys despite the prior onBeforeNavigate
fix. Cause: pop() and push() ran in the same frame, so go_router's
page-key reservation table briefly contained both /now-playing AND
the destination shell-child, tripping the duplicate-key assert.
Refactor: replace onBeforeNavigate with onNavigate(path), where the
host receives the path AFTER the sheet pops and owns the
navigation entirely. The full player wires:
onNavigate: (path) async {
await Navigator.of(context).maybePop();
if (context.mounted) GoRouter.of(context).push(path);
}
Awaiting the pop guarantees /now-playing is fully gone from the
navigator's page list before the push starts.
Mini player + track rows + everywhere else use the default (no
onNavigate) path that does context.push(path) inline — they're
already inside the ShellRoute, no race possible.
Restored alwaysRefresh: true on artistAlbumsProvider. Dropping it
in the cache-loop fix had a side effect: if drift's cachedAlbums
held only a subset of an artist's albums (user previously visited
just one album by them), the artist detail page rendered that
partial list forever — provider only fetched on empty drift, never
on partial drift. The metadata prefetcher only mass-warms
artistProvider (single row), so re-enabling SWR on artistAlbums
won't recreate the storm.
Same root cause as the /queue duplicate-page-key crash: /now-playing
is a top-level route (lives outside the ShellRoute), but
/artists/:id and /albums/:id are shell-children. Pushing a shell-
child from a top-level route makes go_router attempt to mount a
second ShellRoute on top of the active one, leaving navigation in a
broken state. The mini player works because it's already inside the
shell.
Add an optional onBeforeNavigate callback to TrackActionsSheet
(forwarded through TrackActionsButton). When set, fires after
sheet.pop() and before context.push() of the destination route.
Wire the full player's TrackActionsButton with onBeforeNavigate:
() => Navigator.of(context).maybePop() so /now-playing dismisses
itself before the detail route is pushed. Result: clean navigation
into the destination, mini player visible underneath as expected.
Mini player keeps the default (no callback) since it's already in
the shell.
Server has been generating system_variant='discover' playlists since
M6a (internal/playlists/system.go and POST
/api/playlists/system/discover/refresh) but neither client surfaced
it. The Flutter home filtered system playlists by exact match on
'for_you' and 'songs_like_artist', dropping Discover. The web home
did the same. Tiles were generated server-side and silently
discarded by both clients.
Add a Discover slot to the playlists row in both:
- Flutter: 5-slot row now (For You, Discover, 3× Songs-like) with
matching placeholder state machine.
- Web: same shape, same placeholderVariant() call.
When the engine has built it, the real playlist tile renders;
otherwise a placeholder with the same building/pending/failed
status semantics as the other system tiles.
The lazy source-build commit (1ddde12) introduced a race: when the
user taps play on a new track while a previous queue's
_fillRemainingSources is still working, the stale fill keeps
calling _player.addAudioSource() on the new player state — appending
old-playlist tracks into the new queue and confusing the player into
the "locked to one song" symptom.
Fix: queue-generation counter. setQueueFromTracks bumps
_queueGeneration first thing; the background fill captures its gen
at start and aborts before any further player mutation if a newer
queue has taken over. The previous play() never gets to mutate the
new player state.
Also resets _suppressIndexUpdates at the start of every
setQueueFromTracks (defensive — covers the case where a prior
backward-fill bailed on its gen check before reaching `finally`)
and only releases the flag in finally if we're still the active
gen.
Symptoms this should resolve:
- "locked to one song" after rapid play taps
- Late `play() returned 73189ms` lines indicating a previous
hung play() call finally resolving and stepping on current state
- Player stuck in odd processingState after queue swaps
Same pattern as album + artist detail. PlaylistDetailScreen accepts
optional Playlist seed via go_router extra. While
playlistDetailProvider is still resolving, render the header
(description if any + track count) plus a "loading tracks…" inline
spinner instead of an opaque full-screen CircularProgressIndicator.
The body fills in when tracks arrive via drift watch re-emit.
Routing reads s.extra as Playlist. PlaylistCard +
PlaylistsListScreen pass the playlist via extra. Surfaces with no
seed available (deep links etc.) fall back to the original full-
screen spinner.
Track row rendering already uses ListView.builder so visible row
count was never the bottleneck — the wait was for the detail fetch
itself. Header-on-tap is the win that makes the screen feel snappy.
Two unrelated wins as a single batch.
Flutter — lazy source building in setQueueFromTracks:
Today: Future.wait builds all N AudioSource objects (drift queries +
LockCaching ctor) before the player can call setAudioSources →
play(). Measured at 83ms for a 25-track playlist, on top of the
~285ms initial-source preload.
New flow: build only the initial source, hand it to setAudioSources
([initial], initialIndex: 0) so play() can start, then background-
fill the rest. Forward direction (skipNext targets) added via
addAudioSource. Backward direction (skipPrev) inserted at index 0..
initialIndex-1 with _suppressIndexUpdates true so the unavoidable
currentIndex shifts don't push the wrong MediaItem onto the stream.
Saves the up-front source-build wait — tap-to-audio for long queues
should drop by ~80-100ms even on cache hits.
Server — Cache-Control on the three byte-serving endpoints:
- /api/albums/{id}/cover: max-age=86400, must-revalidate. Covers
change rarely (re-scan, MBID enrichment); a day of cache is safe
and skips conditional GETs for the bulk of a session.
- /api/playlists/{id}/cover: max-age=300, must-revalidate. Collages
recompute when contents change; short enough for edits to feel
fresh, long enough to skip repeat fetches during a session.
- /api/tracks/{id}/stream: max-age=31536000, immutable. Track bytes
are immutable for a given id (scanner re-indexes by file_path; new
files get new ids). LockCachingAudioSource on the Flutter side
already disk-caches, but proper headers let it skip even the
conditional 304 on repeat plays.
Logs were spitting "RenderFlex overflowed by 1.00 pixels on the
bottom" from album_card.dart whenever the library Albums tab or
artist detail album grid rendered. Cell height was computed as
cover + gap + title + artist + 4px slack, which assumes pixel-perfect
14sp/12sp line heights — Flutter's actual rendering with ascent/
descent + line-height multipliers wants one more pixel.
Bump slack from 4 to 8 in both grids. AlbumCard layout unchanged;
the warnings stop.
Otherwise the log shape is healthy now: prefetcher fires once per
library page emit (expected, one batch per pagination), cache misses
fetch sequentially with clean drift-write → re-emit cycles, and
album taps are single-round-trip cold-fetches followed by drift hits.
No more cycles of duplicate fetches.
Same fix shape as albums: drift's CachedPlaylistAdapter.toRef was
returning coverUrl: '' because the cache table doesn't persist the
server-derived URL. Set it to /api/playlists/<id>/cover in the
adapter — handleGetPlaylistCover serves the cached collage from
disk, so the URL is deterministic and the round-trip through drift
no longer drops it.
PlaylistCard + PlaylistsListScreen pass the existing queue_music
icon as ServerImage's fallback, so when the server hasn't built a
collage yet (system playlists with no tracks at build time), the
endpoint 404s and the icon shows over the slate background instead
of an empty box.
Tap→audio measured at ~370ms — that path's fast. Real symptom: a few
seconds of audio, then silence with no event surfaced to Flutter.
ExoPlayer is failing/completing somewhere and we have no log to act
on.
Three changes, all log-only:
- Add onError to playbackEventStream so stream failures (404, range-
request bugs, decoder errors, network drops) print instead of
silently halting playback.
- Subscribe to playerStateStream and log playing + processingState
on every transition. Silent stops will now show as a state shift
to completed / idle / buffering with no resumption.
- Subscribe to processingStateStream separately to catch fine-grained
state transitions ExoPlayer reports between source advances.
After hot-restart, tap-then-go-quiet should produce a sequence we
can read — most likely either "processingState=completed" partway
through (server returning premature EOS or wrong Content-Length) or
a thrown error from ExoPlayer's source-loading path.
CI fixes:
- artist_detail_screen.dart: drop unnecessary foundation import (debugPrint
comes from material) and unused metadata_prefetcher import.
Playback timing visibility (so we can stop guessing where the lag
lives):
- playTracks now logs serverUrl / token / configure / setQueue /
play() returned, each stage in milliseconds. The next time you
tap play, we'll see exactly where the seconds go.
- setQueueFromTracks adds two more measurements: total source-build
time across all tracks, and setAudioSources duration.
Small concrete win:
- audio_handler caches the application cache dir path on first use
(already cached in _maybeRegisterStreamCache; now also used in
_buildAudioSource for the LockCachingAudioSource path). One less
platform channel hit per track on cache-miss queue builds.
Once we see real numbers we can decide whether the fix is to build
sources lazily (initial source first → play → background-add the
rest), pre-warm the audio handler at app start so playTracks skips
serverUrl + token reads entirely, or something else.
The prefetcher + alwaysRefresh combination was creating a feedback
loop visible in the logs as repeated `metadataPrefetcher: warming N
albums` cycles, each kicking N parallel getAlbum fetches that then
triggered drift writes that triggered re-emits that re-ran the
prefetcher. Tap-to-play was queueing behind 14+ in-flight cache
fetches.
Three structural fixes:
1. Prefetcher hard-dedupes per session via _warmedArtists Set.
Re-rendering a screen no longer re-fires fetches for ids we've
already seen.
2. Prefetcher only warms artistProvider, not albumProvider. Albums
carry track lists; pre-warming N albums fans out N parallel
"fetch tracks" round trips for content the user may never visit.
Artist rows are single-row lookups — cheap. Album detail loads
on tap (still fast: server-side perf work makes it ~one round
trip).
3. Drop alwaysRefresh from albumProvider, artistProvider,
artistAlbumsProvider, artistTracksProvider. Each was kicking one
silent background refresh per first cache hit. With the prefetcher
creating many subscriptions in parallel, that meant every
prewarmed id triggered an extra fetch even when drift was already
populated. playlistsListProvider keeps alwaysRefresh — system
playlists genuinely rotate UUIDs and need the catch-up. Pull-to-
refresh remains the explicit invalidation path everywhere else.
Removed the warmAlbums calls from the library Albums tab and artist
detail album grid (the storm sources).
Net effect: cold app boot warms ~12-15 artist rows once, period.
Tapping a tile still fetches its detail on demand (one round trip,
fast). User-initiated playback isn't queued behind cache work.
MetadataPrefetcher gains warmAlbums(ids) / warmArtists(ids) public
methods so callers can fan out drift-cache warm-ups for whatever
collection just landed.
Wired into:
- Library Artists tab — warms first 8 artists from the page on every
data emit (initial + paginate + refresh).
- Library Albums tab — same for first 8 albums.
- Artist detail album grid — warms first 8 albums from the artist's
album list as soon as it loads, so tapping into any of them is a
drift hit.
Hard-cap of 8 per call (same as the home prefetch). Set spans across
calls aren't deduped at this layer because providers themselves
short-circuit on cached values.
Also instrument the artist-detail play button: try/catch around the
artistTracksProvider read + playTracks call, snackbar on
empty-tracks or thrown-error so silent failures stop being silent.
The current behavior was an early return on tracks.isEmpty with no
visible feedback.
Across-the-board sluggishness was every cold-cache tap doing one
network round trip while the user waits. SWR helps on re-visits but
the first time you tap a tile from home you eat the latency.
MetadataPrefetcher listens to homeProvider. When /api/home returns,
it fires fire-and-forget reads on albumProvider + artistProvider for
the top-N items in each home section (recently added, rediscover,
most played, last played). Each provider read triggers the existing
cold-cache path, which writes to drift. By the time the user
actually taps a tile, it's already a drift hit and the detail
screen renders instantly.
Cap N=8 per section (covers what's visible on a typical phone
without scrolling). Set spans dedupe across sections so popular
artists don't get fetched five times. Errors are swallowed — a
failed prefetch is silent and the tile falls back to its on-tap
fetch behavior.
Wired alongside the existing audio prefetcher in app.dart's
postFrameCallback.
Detail screen showed empty rows for system playlists because the
fetch batch wrote cachedPlaylists, cachedPlaylistTracks (positions),
cachedArtists, and cachedAlbums — but never cachedTracks themselves.
The detail screen's LEFT OUTER JOIN cachedTracks then returned null
on every row, so trackId was null and titles came back empty.
PlaylistTrack on the wire carries enough to populate cachedTracks
(id, title, albumId, artistId, durationSec). Adds a third dedup map
in fetchAndPopulate, batched with the existing artist + album writes.
track_number / disc_number aren't on the wire so they default to 0;
the detail screen doesn't surface them.
Reusing cachedTracks across albumProvider + playlistDetailProvider
also means tapping a playlist's track to play it now finds the row
in drift instead of triggering another fetch.
The 404 on tapping the For-You tile traced to stale drift rows.
BuildSystemPlaylists rotates UUIDs on every rebuild, so old For-You
/ Songs-Like ids accumulate in cachedPlaylists. The list provider's
fetchAndPopulate was only doing insertOrReplace, which adds new rows
but never removes the obsolete ones — so the home tile renders 8
playlists when the server only knows 4, and 4 of those tiles 404 on
tap.
Two fixes:
playlistsListProvider.fetchAndPopulate now reconciles. After
fetching the fresh list, deleteWhere any user-owned drift row whose
id isn't in the fresh response, then upsert the fresh set in the
same batch. Public-from-others rows are left alone — they're not
keyed by ownership and we don't want to drop someone else's public
playlist just because the current user's response didn't enumerate
it. Operates inside the existing batch so it's atomic.
playlistDetailProvider.fetchAndPopulate now treats a DioException
404 as "this row is stale": delete the cachedPlaylists + any
cachedPlaylistTracks rows for this id, return false so the UI yields
emptyDetail. The next render of the home row sees the row gone and
the tile disappears, completing the cleanup.
Side note: every system-playlist rebuild discards drift rows for the
just-evicted UUIDs and writes the new ones. That cycle's been
silently churning since system playlists shipped — this is the
first time the cleanup actually runs.
Closes the gap where LockCachingAudioSource wrote files to disk but
never told AudioCacheManager about them — meaning evict() couldn't
reclaim stream-cached files when usage exceeded the cap, only
explicitly-pinned downloads.
Wire just_audio's bufferedPositionStream as the "download complete"
signal: when bufferedPosition reaches duration (with 200ms slack for
header bytes), look up the on-disk file at the LockCaching path,
read its size, and insert an audio_cache_index row via the new
AudioCacheManager.registerStreamCache(). Source defaults to
incidental so stream-cached tracks are first to be evicted under
pressure.
Dedupe via _streamCacheRegistered Set so we don't hit drift on every
~200ms buffered-position emit. Cache the application cache dir path
on first use for the same reason.
Eviction now sees the full set of files on disk; usageBytes() (which
already walks the dir) and evict() (which reads the index) are
finally consistent for stream-cached tracks. Pinned tracks keep
their existing manual-download flow unchanged.
The Storage card has been showing "0 B" for users who only stream
(never explicitly pin or download an album). usageBytes() summed
SUM(size_bytes) from audio_cache_index — but the streaming path
through audio_handler writes files via LockCachingAudioSource without
ever inserting an index row, so the index undercounts (often to
zero) for normal use.
Walk the cache directory instead. Catches everything on disk:
manually pinned tracks (registered in the index), stream-cached
tracks (LockCaching), partial downloads. Falls back gracefully when
a file is racing against concurrent writes / deletes.
Eviction still operates on the index (it needs the source/recency
metadata to pick eviction order). Stream-cached files aren't subject
to eviction today — separate problem; addressed when we wire a
download-complete hook from LockCaching back into the index.
Tapping the queue button from /now-playing crashed with
NavigatorState._debugCheckDuplicatedPageKeys. Root cause: when I
moved /now-playing out of the ShellRoute earlier, /queue was left
inside the shell. Pushing /queue while /now-playing was on top
made go_router try to mount a second ShellRoute instance under the
existing one — both shells got the same page key.
Move /queue out of the ShellRoute too, sibling to /now-playing.
Shell stays mounted (with whatever child it had) underneath both
top-level routes; pop from /queue returns to /now-playing or the
shell's previous child as appropriate.
Move shuffle / repeat / queue out from below the play controls and
combine with the like + kebab into a single row sitting just above
the seek bar. Title row drops back to title-only (truly centered now,
no Stack needed since nothing competes for the row's right edge).
Layout order is now: art → title → artist → album → [shuffle, repeat,
queue, like, kebab] → seek → prev/play/next.
The "queue" icon in the top-right of the AppBar stays for now —
redundant with the new row but matches what users have already
muscle-memoried for opening the queue from any player state.
Both providers were FutureProvider<Paged<T>> returning a single page
of 50, so once the user scrolled past 50 items the list just ended.
Replace with AsyncNotifier<Paged<T>> that exposes loadMore(): fetches
the next page using items.length as the offset and appends to the
existing list. Idempotent guard via _loadingMore flag — concurrent
scroll events near the bottom collapse to a single fetch.
Both tabs now wrap the GridView in NotificationListener<ScrollNotification>
that fires loadMore() when within 800px of maxScrollExtent. The
lookahead is enough that the next page lands before the user hits
the visible bottom on a typical phone scroll.
Pull-to-refresh updated to invalidate + re-await the provider so a
manual refresh always starts from the first page.
Update installs were failing at the system scanner step because every
release APK was signed with a different signature: build.gradle.kts
fell back to signingConfigs.getByName("debug"), and the debug
keystore is generated per-machine — so every CI runner had a fresh
random key. Android refuses to upgrade an installed app when the
signature doesn't match, hence the "App not installed" failure
after the scan.
Two-part fix:
1. build.gradle.kts now defines a real "release" signing config when
ANDROID_KEYSTORE_PATH is exported (with the matching password +
alias env vars). Without those, falls through to the debug
keystore so local `flutter run --release` still works.
2. flutter.yml decodes ANDROID_KEYSTORE_B64 (CI secret, base64 of the
real release keystore) into a tmp path before the release-APK
build step, then exports ANDROID_KEYSTORE_PATH + the three
password/alias secrets as env vars. CI now hard-errors if the
keystore secret is missing on a tagged build — we don't want
another silent debug-keystore release.
OPERATOR ACTION REQUIRED before the next tag:
1. Generate a release keystore (one-time):
keytool -genkey -v -keystore minstrel-release.keystore \
-alias minstrel -keyalg RSA -keysize 2048 -validity 10000
2. Base64 it:
base64 -w0 minstrel-release.keystore > keystore.b64
3. In Forgejo, add four repo secrets:
ANDROID_KEYSTORE_B64 = contents of keystore.b64
ANDROID_KEY_ALIAS = minstrel
ANDROID_STORE_PASSWORD = the password you set
ANDROID_KEY_PASSWORD = same password (or different alias pwd)
4. Keep minstrel-release.keystore offline and backed up — losing it
means you can never sign an upgrade for any existing install.
5. Existing installs from prior debug-keyed releases must be
uninstalled before installing the first key-signed release. This
is a one-time transition; future tagged builds will upgrade
cleanly.
- artist_detail_screen.dart missed an `import '../models/artist.dart'`
for the ArtistRef seed parameter; analyze flagged undefined_class.
- radio.dart + player_provider.dart doc comments wrapped URL
parameters in <...> which lint reads as HTML. Switched to backticks.
Full player title is now centered absolutely via a Stack: title with
horizontal padding equal to the actions cluster width sits at the
optical center, while LikeButton + TrackActionsButton are pinned to
the right edge with Positioned. Fixed-height SizedBox(32) keeps the
row stable when the title wraps to a single ellipsized line.
Three issues, all related to the player surface:
1. Player UI didn't update on track change. audio_handler's
_onCurrentIndexChanged only kicked off the cover load — it never
pushed the new MediaItem onto the mediaItem stream. Title/artist/
cover stayed pinned to whatever setQueueFromTracks(initialIndex:)
set on first play. Now the listener pushes queue[idx] when the
index changes.
2. Player kebab "Go to artist" 404'd while the same item from
MostPlayed worked. Same TrackActionsSheet for both, but the
player's _trackRefFromMediaItem was hardcoding artistId: ''
because audio_handler's _toMediaItem never stashed it in extras.
Stash artist_id alongside album_id; player_bar +
now_playing_screen read it back. Both kebabs now navigate.
3. "Start radio" didn't exist on Flutter even though the server has
/api/radio?seed_track=<id>. New RadioApi (lib/api/endpoints/
radio.dart) wraps the endpoint; PlayerActions.startRadio(trackId)
fetches + plays the result via the existing playTracks path.
New menu item between "Add to playlist" and the divider above
"Go to album", calls startRadio with a snackbar error fallback.
System playlists now show in the home row (good!) but tapping them
landed on an empty playlist. Same root cause as the earlier album
bug: playlistsListProvider wrote the playlist *row* to drift but
never the tracks. playlistDetailProvider only triggered cold-fetch
when the row was missing, so it yielded with an empty track list.
Refactor playlistDetailProvider to mirror albumProvider's approach:
- fetchAttempted guard (one-shot per subscription).
- Detect "playlist row exists but trackRows empty" and trigger the
same fetchAndPopulate the cold-cache path uses. Drift watch
re-emits with populated tracks.
- 10s timeout on the API fetch + diagnostic prints so any failure
surfaces in logs.
While here, fix two adjacent issues:
- Wipe + re-insert this playlist's track positions on every fetch
so server-side deletions actually propagate. Without the wipe,
removed tracks would linger in drift forever.
- Write the artist + album rows referenced by the fetched tracks
into cachedArtists / cachedAlbums (deduped). Without this, the
joined artistName/albumTitle columns in the playlist track rows
surface empty.
Cover art for system playlists is a separate issue — server emits
coverUrl but it may be empty for system mixes; PlaylistCard falls
back to the queue_music icon. Will tackle in a follow-up.
bvandeusen