# Minstrel mobile client

Flutter (iOS + Android) sibling of the SvelteKit web SPA. v1 first
slice ships: scaffold, auth, library browse (home / artist / album),
likes, player with background audio + lock-screen controls.

## Setup

```bash
cd flutter_client
flutter pub get
./tool/sync_shared.sh         # copy tokens / error-copy / placeholders from ../web
dart run tool/gen_tokens.dart # regen lib/theme/tokens.dart from shared/fabledsword.tokens.json
flutter run
```

`sync_shared.sh` is idempotent. CI runs it on every build; rerun locally
whenever `web/src/lib/styles/tokens.json`,
`web/src/lib/styles/error-copy.json`, or
`web/static/placeholders/album-fallback.svg` changes.

## Project layout

See `docs/superpowers/specs/2026-05-02-flutter-mobile-foundation-design.md`
section 3. Briefly:

- `lib/api/` — dio client, ApiError, error-copy loader, per-surface endpoints.
- `lib/auth/` — server URL screen, login screen, AuthController + secure storage.
- `lib/library/` — home, artist detail, album detail, providers, widgets.
- `lib/likes/` — LikeButton + optimistic toggle controller.
- `lib/player/` — audio handler, player provider, mini PlayerBar, NowPlaying.
- `lib/theme/` — FabledSword token Dart class (generated), ThemeExtension, ThemeData.
- `lib/shared/` — routing (go_router shell), version gate, connection error banner.

`shared/fabledsword.tokens.json` and `assets/error-copy.json` are
synced from web/. Don't edit them directly — edit `web/src/lib/styles/`
and re-run `./tool/sync_shared.sh`.

## Architecture

- **State:** Riverpod 2 (`AsyncValue`, `AsyncNotifier`, family providers).
- **HTTP:** dio 5 with a Bearer-auth interceptor; 401 clears the session
  and the router redirects to login.
- **Audio:** just_audio wrapped by audio_service for background
  playback + lock-screen / notification controls.
- **Auth:** Bearer tokens in flutter_secure_storage. Server already
  supports both cookie (web SPA) and Bearer (`internal/auth/session.go`).
- **Routing:** go_router with a ShellRoute so the PlayerBar persists
  across navigation. Cold launch flow: no server-url → `/server-url`,
  url set / no token → `/login`, token present → `/home`.

## CI

`.gitea/workflows/flutter.yml` runs on push to dev/main, tag pushes,
PR to main, and manual dispatch — path-filtered to `flutter_client/**`
plus the shared web inputs. Steps: sync, analyze, test, build APK.
Debug APKs upload as artifacts; release APKs attach to the Gitea
release on tag.

## Versioning

`pubspec.yaml` `version` mirrors the server tag (e.g. server `v0.1.0`
→ Flutter `0.1.0+1`). The server's `/healthz` returns
`min_client_version`; old clients show an Update Required modal and
refuse to operate. Bump `internal/server/version.go` `MinClientVersion`
when a server-side change requires a paired client update.

## Distribution

- **Android:** APK on the Gitea release page. No Play Store for v1.
- **iOS:** TestFlight on tag (manual upload v1, automate later).

## Out-of-scope for slice 1

Search, discover, requests, settings beyond server URL, admin,
listening history, playlists, offline cache (#357). Those land in
subsequent slices with their own brainstorm/spec/plan cycles. Per the
operator's M7 ordering decision (2026-05-02), slice 2+ pauses to ship
the missing web features first (#352 playlists, #362 theme toggle,
#363 queue UI, #364 listening history, etc.) before mirroring on
Flutter.
