Mirrors flutter_client/lib/cache/db.dart's CachedLikes Drift table —
composite PK (userId, entityType, entityId) so the same user can
like a track and its album and its artist independently. entityType
is a plain string ("track" | "album" | "artist") for parity with the
Drift schema and the server wire format.
DAO surface tailored to consumers we know are coming:
- observeLikedTrackIds(userId): Flow<List<String>> — audio-cache
eviction reads this set to identify "liked" bucket members
- observeLikedIdsOfType(userId, entityType): generalized variant
- observeIsLiked(...): scalar Flow for LikeButton composables
- upsertAll (sync writes)
- delete (mutation queue → toggle off)
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
bvandeusen
7b55f586ac