carlosjfcasero round 2: after 6fa956d6 append stopped recreating the playlist,
but every sync re-appended ALL matched tracks — every track N times. His log
shows it plainly: "added 22 new tracks to 'Disney' (skipped 0 already present)"
on a playlist that already had those 22.
Root cause: the dedupe read `{t.id for t in get_playlist_tracks(...)}` — but
JellyfinTrack only defines `ratingKey`, never `id`, so the existing-ids set was
ALWAYS empty and everything looked new. NavidromeTrack is also ratingKey-only,
so the Navidrome append had the identical bug. Plex (plexapi ratingKey) was
fine. The existing tests were green because they mocked existing tracks as
SimpleNamespace(id=...) — encoding the same wrong assumption as the code.
Fix:
- New pure planner plan_playlist_append(current, desired) in
core/sync/playlist_edit.py (next to the reconcile planner): order-preserving,
drops already-present ids, dedupes within desired, stringifies (Emby numeric
vs string safe).
- Jellyfin/Emby: existing ids fetched from the canonical
/Playlists/{id}/Items endpoint (same as reconcile — works for Jellyfin GUIDs
and Emby numeric ids), ratingKey fallback if that request fails.
- Navidrome: dedupe on ratingKey (the attribute that actually exists).
Tests: planner (skip-present incl. the reporter's unchanged-playlist case,
desired-order, dupes-within-desired, int/str ids, empties) + the append-mode
suite rewritten to pin the REAL shapes (raw Items dicts for Jellyfin,
ratingKey objects for Navidrome) + a new fallback-path test. 524
playlist/sync/jellyfin/navidrome tests pass.
e32e2e5e14