docs: document upload duplicate-detection rule, release/exists endpoint, and FindOrCreateRelease WasCreated contract

2026-06-19 16:25:50 -04:00
parent d0be26bb3e
commit 97cce691db
3 changed files with 16 additions and 3 deletions
@@ -55,6 +55,7 @@ Notable repository / service methods beyond the standard CRUD:
 - `TrackRepository.GetHomeStatsAsync` / `ITrackService.GetHomeStats`: Returns `HomeStatsDto` — cut track count, per-`ReleaseType` cut release counts (zero-suppressed), mix release count, total mix runtime seconds (null durations counted as 0; tracks under a soft-deleted release excluded). Used by `StatsController`.
 - `TrackRepository.UpdateDurationAsync` / `ITrackService.UpdateDuration`: Null-guarded duration write — skips rows where `DurationSeconds` is already set. Used by the one-time backfill (`POST api/track/duration/backfill`).
 - `TrackRepository.SetDurationAsync` / `ITrackService.SetDuration`: Unconditional duration overwrite — no null guard, always stamps the new value. Used by the replace-audio path (`POST api/track/{id:long}/replace-audio`) where the existing non-null duration must be overwritten with the new audio's value. Returns a fail result when zero rows are affected (track removed between lookup and write).
+- `ITrackService.FindOrCreateRelease` / `TrackManager.FindOrCreateRelease`: Finds the release row matching (title, artist) or creates one if none exists. Returns `ResultContainer<(ReleaseDto Release, bool WasCreated)>` — the `WasCreated` flag lets the upload CREATE path distinguish a freshly minted release from one returned because a concurrent upload won the insert race (the latter is treated as a duplicate and rejected with 409, not silently attached). `ITrackService.GetReleaseByTitleAndArtist` is the read-only counterpart used for the upload pre-flight check and the ATTACH-path validation.

 ## Phase 16 — anonymous telemetry domain (EventRepository / EventManager)