radoslav-orlov: "create lossy copies of lossless tracks" only recognized FLAC, even though ALAC/
WAV/AIFF/DSD are now quality-profile formats. the FLAC knowledge was hardcoded in 3 separate
places (the import path, the Lossy Converter scan, and the fix executor) — exactly how a format
gets added in one spot but not another.
kettui-style fix — one canonical seam both sites route through, instead of 3 more string edits:
- new core/quality/lossless.py: is_lossless_format / is_lossless_audio_path (pure; injects a
codec probe for the ambiguous .m4a/.mp4 — ALAC vs AAC — so the decision stays testable with no
I/O), LOSSLESS_FORMATS (single source of truth, derived-consistent with model.tier_score), and
the lossy_output_would_overwrite_source safety invariant.
- create_lossy_copy + the Lossy Converter scan + repair_worker._fix_missing_lossy_copy all route
through it. SQL pre-filters by candidate extensions, then each file is confirmed (probing .m4a).
- SAFETY: a lossy copy must never be written over its own source — an .m4a ALAC source + AAC
target lands on the same .m4a path, and ffmpeg runs with -y. all three sites now bail on the
overwrite case BEFORE ffmpeg (the existing delete-original guard was too late — the source was
already clobbered). dropped a vestigial mutagen FLAC import; updated FLAC-only UI strings.
19 tests: full seam coverage (formats, the .m4a ALAC/AAC probe branch, candidate extensions, the
overwrite guard), a tier-model consistency test that fails if the lossless set drifts, and import-
site wiring tests — WAV now converts (was rejected), and the .m4a-ALAC+AAC overwrite case proves
ffmpeg NEVER runs. 286 quality/import/repair tests green, ruff clean.
safe_move_file used shutil.move, which for a CROSS-filesystem move (downloads volume ->
library volume, common in Docker/NAS) copies the file to the FINAL path incrementally. A
media-server real-time watcher (Jellyfin) can catch that partial file mid-write and cache it
with null/incomplete metadata — tracks landing with no disc. Inconsistent because it only bites
cross-fs and races the scan tick; 're-add library' fixes it (rescan reads the now-complete file)
and the on-disk tags are fine — exactly the reported symptoms.
Fix: same-fs uses an atomic os.replace (also overwrites dst); cross-fs copies to a HIDDEN temp
sibling, fsyncs, then atomic os.replace into place (+ temp cleanup on failure). A watcher only
ever sees the COMPLETE file. EXDEV/EPERM/EACCES + the old string check route here, so detection
is strictly broader than before.
Tests: same-fs move, simulated EXDEV routes to the atomic path and leaves no partial temp, helper
completes+cleans, helper cleans temp + preserves source on failure. Existing replace-destination
test still green; 574 imports+relocate tests pass.
Soulseek album-bundle (and any other release-staging path) was
importing every file with ``track_number=1`` because the staging
metadata reader used the auto-import-flavor filename extractor:
``extract_track_number_from_filename`` returns 1 when the basename
has no ``NN -`` prefix. That's the right default for the loose
auto-import flow (single file in, no upstream metadata to lean
on), but completely wrong for staging-cache reads:
- For an album-bundle download the user has authoritative track
numbers in the Spotify track list flowing through to
``track_info`` for each task.
- ``try_staging_match`` in ``core/downloads/staging.py`` was
meant to use those numbers when the staged file's own metadata
doesn't have them.
- But the staging cache populated ``track_number=1`` for every
untagged bare-title file (e.g. ``Cha-La Head-Cha-La.flac``), the
album-bundle resolution branch reads file-side first, sees 1,
and short-circuits the rest of the chain.
Fix:
- New ``extract_explicit_track_number`` in
``core/imports/filename.py`` — strict variant that returns
``0`` when no numeric prefix is visible. Docstring explicitly
contrasts with the legacy 1-defaulting helper so future
callers pick the right one.
- ``read_staging_file_metadata`` in ``core/imports/staging.py``
now uses the strict extractor, so the staging file dict
carries ``track_number=0`` ("unknown") instead of ``1`` for
untagged bare-title files.
- The legacy ``extract_track_number_from_filename`` keeps its
1-default behavior so auto-import callers + the post-process
template fallbacks are unchanged; it's now implemented in
terms of the strict variant.
- Tag-side parsing also tightened to require ``> 0`` before
overriding the filename-derived value.
3 new tests pin the contracts:
- ``test_extract_explicit_track_number_returns_zero_when_no_prefix``
- ``test_read_staging_file_metadata_returns_zero_track_when_unknown``
- existing ``test_extract_track_number_from_filename_handles_common_patterns``
now explicitly comments why bare filenames keep returning 1.
758 tests across imports + downloads + repair + staging-provenance
suites green. WHATS_NEW entry added under 2.6.3.
Reported against an album-bundle download of Ryoto's
"Cha-La Head-Cha-La" where slskd staged 15 untagged FLAC files
named after the song titles only.
- Cover search_result fallback normalization and ambiguous album detection.
- Add staging metadata, multi-disc path, and MusicBrainz enrichment cases.
- Move the single-track context test next to the imports code it exercises.
- Move import flow modules into a dedicated package
- Update app and test imports to the new namespace
- Group the import-focused tests under tests/imports
2026-04-27 19:54:44 +03:00
Renamed from tests/test_import_file_ops.py (Browse further)
