soulsync/tests/downloads
Broque Thomas f976a6da53 Fix: Soulseek album-bundle downloads stuck on "failed" after slskd
finished the release (#715)

Symptom (user @pavelcreates / @IamGroot60 on 2.6.2):
- Click Download on an album in the search modal
- slskd starts + completes every track of the release
- 22+ minutes after the last completed download, batch flips
  to "failed" with no clear log line explaining why
- Per-track Soulseek downloads on the same machine were fine

Root cause: ``core/soulseek_client._resolve_downloaded_album_file``
probed three hard-coded candidate paths to locate each downloaded
file in the slskd download dir:

  candidates = [
      download_path / remote_filename,
      download_path / basename,
      download_path / *normalized_path_parts,
  ]

On the common slskd config ``directories.downloads.username = true``
slskd writes files at ``<download_dir>/<username>/<filename>`` —
none of the three candidates carry a username segment, so the
resolver returned None for every file even though the file was
physically present in a subdir one level deeper. ``_poll_album
_bundle_downloads`` saw 0 completed_paths, kept spinning, and
hit the master deadline (~30 min) before bailing the batch.

Why per-track worked: ``web_server._find_completed_file_robust``
already does a recursive walk-by-basename + path-confirm against
the remote directory components, so any layout slskd writes ends
up resolved. The bundle path didn't go through it.

Fix
- Lifted the robust finder into ``core/downloads/file_finder.py``
  as a pure function ``find_completed_audio_file(download_dir,
  api_filename, transfer_dir=None) -> (path, location)``. Zero
  globals; recursive walk; handles slskd dedup suffix
  ``_<10+digit-timestamp>``, YouTube / Tidal ``id||title`` encoded
  filenames, the AcoustID-quarantine subdir skip, basename
  collisions disambiguated by remote-path components, and a
  fuzzy-basename fallback above 0.85.
- ``_resolve_downloaded_album_file`` keeps the three-candidate
  fast path (cheap probe for the slskd-flat default) but now
  delegates to the new helper when none hit, instead of giving up.
- ``_poll_album_bundle_downloads`` tracks "slskd reports
  Completed but local resolver returns None" per key. When every
  remaining key has been in that state past a 45-second grace
  window, the poll exits early with an explicit error pointing at
  the likely ``soulseek.download_path`` mismatch instead of
  silently spinning until the master deadline.
- ``web_server._find_completed_file_robust`` becomes a thin
  delegate so both callers share one finder. Legacy inline impl
  kept as ``_find_completed_file_robust_legacy`` for reference;
  to be removed next release.
- Fixed misleading ``"(0 tracks, quality=)"`` log on the preflight-
  reuse path — was reading attrs off a None ``picked`` object.

Tests (17 new in tests/downloads/test_file_finder.py)
- Flat slskd layout
- Username-prefixed (the #715 case)
- Full remote tree preserved
- Deeply nested username + tree
- File genuinely missing returns None
- Basename collision disambiguated by remote dirs
- Single basename match wins regardless of dirs
- slskd dedup suffix match
- Short ``_<digits>`` (year) not treated as dedup
- AcoustID quarantine subdir skipped
- YouTube / Tidal ``id||title`` encoded filenames
- transfer_dir fallback
- Both dirs miss → (None, None)
- Non-audio files ignored
- Empty api_filename
- Fuzzy match on punctuation variant
- Fuzzy rejects below threshold

475 downloads tests pass after the lift.
2026-05-27 21:20:37 -07:00
..
__init__.py PR4a: lift sync history recording to core/downloads/history.py 2026-04-27 20:37:16 -07:00
test_background_download_worker.py Add 5 test additions JohnBaumb suggested 2026-05-05 13:04:18 -07:00
test_deezer_pinning.py Surface engine-not-wired errors + exclude soulseek from monitor aggregation 2026-05-05 12:20:51 -07:00
test_download_engine.py Add 5 test additions JohnBaumb suggested 2026-05-05 13:04:18 -07:00
test_download_orchestrator.py Fix Usenet settings reload without restart 2026-05-22 08:28:56 -07:00
test_downloads_cancel.py PR4b: lift cancel + clear download routes to core/downloads/cancel.py 2026-04-27 21:41:35 -07:00
test_downloads_candidates.py Trust user manual picks past AcoustID verification (#701) 2026-05-26 09:56:49 -07:00
test_downloads_cleanup.py PR4c: lift _automatic_wishlist_cleanup_after_db_update to core/downloads/cleanup.py 2026-04-27 22:23:41 -07:00
test_downloads_history.py PR4a: lift sync history recording to core/downloads/history.py 2026-04-27 20:37:16 -07:00
test_downloads_lifecycle.py Add torrent and usenet release staging support 2026-05-21 14:22:21 -07:00
test_downloads_master.py Harden album bundle fallback flow 2026-05-24 16:15:36 -07:00
test_downloads_post_processing.py Add torrent and usenet release staging support 2026-05-21 14:22:21 -07:00
test_downloads_staging.py Fix album-bundle staging match + wishlist provenance (#700, #698) 2026-05-26 07:12:49 -07:00
test_downloads_status.py Wishlist: distinguish Queued from Analyzing for executor-pending batches 2026-05-27 14:52:02 -07:00
test_downloads_task_worker.py Add Soulseek album bundle downloads 2026-05-23 15:08:21 -07:00
test_downloads_validation.py Add torrent and usenet release staging support 2026-05-21 14:22:21 -07:00
test_file_finder.py Fix: Soulseek album-bundle downloads stuck on "failed" after slskd 2026-05-27 21:20:37 -07:00
test_hifi_pinning.py Support legacy HiFi track manifests 2026-05-21 18:11:14 -07:00
test_lidarr_pinning.py A8: Pin LidarrDownloadClient download lifecycle behavior 2026-05-04 12:10:49 -07:00
test_qobuz_pinning.py Surface engine-not-wired errors + exclude soulseek from monitor aggregation 2026-05-05 12:20:51 -07:00
test_rate_limit_policy.py E1: Add RateLimitPolicy declaration mechanism 2026-05-04 14:38:20 -07:00
test_soulseek_pinning.py Add Soulseek album bundle downloads 2026-05-23 15:08:21 -07:00
test_soundcloud_pinning.py Surface engine-not-wired errors + exclude soulseek from monitor aggregation 2026-05-05 12:20:51 -07:00
test_tidal_pinning.py Handle non-JSON Tidal auth responses 2026-05-20 14:04:45 -07:00
test_track_metadata_backfill.py Wishlist: harden Spotify backfill — poisoned tn=1 can't mask lean album 2026-05-27 16:47:26 -07:00
test_wishlist_aggregator.py Wishlist modal: surface most-advanced live phase, not least-complete 2026-05-26 22:35:53 -07:00
test_youtube_pinning.py Surface engine-not-wired errors + exclude soulseek from monitor aggregation 2026-05-05 12:20:51 -07:00