resolve_history_audio_path drives a DESTRUCTIVE delete (os.remove), but lived
endpoint-bound in web_server with zero tests. Lifted to core/matching/history_paths
with injected effects (exists / resolve_library_path / lookup_titled_paths) so the
fallback chain — and the collision-safety that stops delete() from removing the
wrong same-title file — is a clean importable seam. web_server now wraps it (DB
lookup + os.path.exists + prefix resolver injected); behavior preserved.
9 tests lock it: recorded-path hit, prefix-resolve fallback, single tracks-table
candidate, and the safety rules — multiple same-title candidates with NO artist ->
None (refuse to guess), artist filter picks only the matching path, artist named
but unmatched -> None, no-title/empty-lookup -> None. Full suite green (5906).
The candidate matcher rejected valid downloads of titles with a '/' or ':' (e.g.
Sawano's "You See Big Girl / T:T") because the unified normalize() removed those
chars ("t:t" -> "tt") while keeping the '_' that source filenames substitute for
them ("T_T" -> "t_t") — the asymmetry tanked the similarity score. Now '/ \ : _'
all map to spaces before the strip, so "/ T:T" and "_ T_T" both normalize to "t t".
Verified on the real library: similarity for the Sawano pair 0.927 -> 1.000; only
348/40786 strings (0.85%, all containing those separators) change; worst-case
joined-variant match (e.g. "12:05" vs "1205") stays 0.889, well above the 0.70
title threshold — no match regressions. Fixes the matching half of #851.
- ⚠ Unverified filter rows gain actions: inline play (range-streamed from the
history file path, server-side only), YouTube compare, Approve -> new
human_verified status (tag + history + tracks; AcoustID scanner skips these
entirely), Delete (file + entry)
- API: /api/verification/<id>/stream|approve|delete (path only from DB row)
- backfill: history rows with acoustid_result='fail' that exist at all were
imported despite the failure = force_imported (covers pre-fix fallback
imports like the user's 'My Ordinary Life')
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Also: evaluate() treats an empty expected artist as title-only comparison
(old scanner behaviour — a missing DB artist is no evidence of a wrong file),
and the thresholds are now defined once in the core and re-exported.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The library AcoustID scan now calls audio_verification.evaluate() (alias-aware
artist match + cross-script SKIP) instead of its own non-ASCII-stripping
_normalize and threshold logic, so it no longer false-flags correct anime-OST /
kanji tracks. Duration-collision guard kept as a scanner pre-check on the top
recording. evaluate() is now purely a title/artist/version/cross-script decision.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
verify_audio_file now calls audio_verification.evaluate() and re-exports
normalize/similarity/_alias_aware_artist_sim from the core, so import and the
library scan can no longer drift apart. Alias-rescue diagnostic moved to the core.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
AcoustID returns a recording's title/artist in their ORIGINAL script
(e.g. "久石譲" for Joe Hisaishi) while SoulSync's expected metadata is
romanized/English. A correct download then fails verification on two
walls: the title can never clear the 0.70 similarity bar cross-script,
and the only skip path that ignores the title required a near-perfect
0.95 fingerprint plus a resolved alias. Result: every non-English
artist trips it. Two complementary fixes, per the reporter's two ideas.
Graceful fix (automatic):
- New pure core/matching/script_compat.py detects when two strings are
in genuinely different writing systems (CJK/Hangul/Cyrillic/Greek/
Arabic/Hebrew/Thai vs Latin). Accented Latin (Beyoncé, Sigur Rós)
stays Latin — no false trigger.
- acoustid_verification.py: when the EXPECTED artist and the matched
artist span scripts AND the artist is confirmed via the existing
MusicBrainz alias bridge, SKIP instead of quarantine, without the
0.95 floor (the 0.80 trust floor already gates the fingerprint).
- Deliberately narrow: keyed on the ARTIST spanning scripts + being
confirmed. A same-script artist with only a cross-script title keeps
the stricter 0.95 floor, so the #607 wrong-file protection (Kendrick
R.O.T.C, low-fingerprint Japanese-title) is untouched.
Per-request toggle (manual escape hatch):
- New "Skip AcoustID verification" checkbox in the download-missing
modal beside "Force Download All".
- skip_acoustid threads request -> batch -> per-track track_info ->
download context (same path as _playlist_folder_mode), landing on
the existing _skip_quarantine_check='acoustid' bypass. No new
mechanism; only the AcoustID gate is bypassed (integrity/bit-depth
still run).
Tests:
- tests/matching/test_script_compat.py — script-boundary cases.
- test_acoustid_skip_logic.py — Joe Hisaishi SKIPs at 0.85; unconfirmed
cross-script artist still FAILs; same-script low-fingerprint still
FAILs.
- test_downloads_candidates.py — toggle injects the bypass; absent
toggle keeps verification.
Full suite: 5169 passed; only pre-existing soundcloud /app env failures
remain. Zero regressions.
Issue #607 (AfonsoG6) -- two AcoustID problems:
1. Live recordings false-quarantining as "Version mismatch: expected
'... (Live at Venue)' (live) but file is '...' (original)" because
MusicBrainz often stores the recording entity with a bare title --
the venue / live annotation lives on the release entity, not the
recording. The audio fingerprint correctly identifies the live
recording, but the title-text comparison flagged it as wrong.
New pure helper `core/matching/version_mismatch.py:is_acceptable_version_mismatch`
accepts the mismatch only when:
- One-sided AND involves 'live': exactly one side is 'live' and
the other is bare 'original'. Two-sided mismatches stay strict.
- Fingerprint score >= 0.85 (stricter than the existing 0.80
minimum -- escape valve only fires when AcoustID is more
confident than its own threshold).
- Bare title similarity >= 0.70.
- Artist similarity >= 0.60.
Other version markers (instrumental, remix, acoustic, demo, etc)
stay strict -- those have distinct fingerprints AND MB always
annotates them in the recording title. The existing
test_acoustid_version_mismatch.py suite passes unchanged.
2. Audio-mismatch failure message reported "identified as '' by ''
(artist=100%)" when AcoustID returned multiple recordings -- prior
code mixed `recordings[0]`'s strings (which can be empty) with
`best_rec`'s scores. Now uses `matched_title` / `matched_artist`
consistently in both the high-confidence-skip path and the final
fail message.
Issue #608 (AfonsoG6) -- quarantine modal:
3. Approve / Delete buttons silently no-op'd when the filename
contained an apostrophe -- the unescaped quote broke the inline JS
in the onclick handler. Now wraps the id via
`escapeHtml(JSON.stringify(id))`, which round-trips quotes /
backslashes / unicode / newlines safely through the HTML attribute
to JS string boundary.
4. Bonus UX: quarantine entry expanded view now shows source uploader
(username) and original soulseek filename when the sidecar carries
that context -- helps trace which uploader the bad file came from.
Backend exposes `source_username` + `source_filename` fields from
`sidecar.context.original_search_result`. Degrades to '' on legacy
thin sidecars.
Tests:
- 23 new boundary tests in tests/matching/test_version_mismatch.py
pin every shape: equal versions trivial, one-sided live both
directions, threshold floors (each just below default -> reject),
two-sided strict, non-live one-sided strict (covers exact
test_instrumental_returned_for_vocal_request_fails scenario),
custom-threshold overrides.
- 4 existing test_acoustid_version_mismatch.py tests pass unchanged.
- 507 AcoustID / matching / imports tests pass.
Closes#587. Three coordinated fixes per codex's diagnosis. AcoustID
verification gate left intact — these fixes target the upstream
scanner false-positive surface plus a separate retag-path gap.
Bug 1 — scanner used recordings[0] as authoritative
`core/repair_jobs/acoustid_scanner.py:_scan_file` only checked the
top fingerprint match's metadata. AcoustID often returns multiple
recordings per fingerprint (sample collisions, multi-MB-record
cases) and the wrong-credited recording can outrank the right-
credited one. Foxxify case 2 (Nana / Nana): top match credited the
wrong artist while a lower-ranked candidate matched the user's
expected metadata exactly.
Lifted the verifier's all-candidates check to a shared pure helper
`core/matching/acoustid_candidates.py:find_matching_recording`. Both
verifier and scanner can now ask "given these candidates, does ANY
of them match expected (title, artist)?" with the same contract.
Scanner suppresses the finding when any candidate matches.
Bug 2 — no duration check guards against fingerprint hash collisions
Foxxify case 3: 17-minute mashup edit fingerprinted to a 5-minute
late-70s Japanese hiphop track (different songs, fingerprint hash
collision on a sampled section). Scanner had no signal to detect
this and would have recommended retagging the 17-min file as the
5-min track.
`duration_mismatches_strongly` in the same helper module flags drifts
beyond max(60s, 35%). Scanner now skips findings when the candidate's
duration disagrees strongly with the file's expected duration. Loaded
duration via the existing tracks SQL (added `t.duration` to the
SELECT). Returns False when either side is unknown — no behavior
change for older rows without duration data.
Bug 3 — scanner retag bypassed multi-value ARTISTS tag setting
`core/repair_worker.py:_fix_wrong_song` called `write_tags_to_file`
with single-string artist updates. The writer only wrote TPE1
(single string) and never read the user's
`metadata_enhancement.tags.write_multi_artist` config. Multi-value
ARTISTS tags got stripped on every retag, contradicting the
post-download enrichment pipeline's behavior.
Per codex's pick (option B over routing through enhance_file_metadata),
extended `write_tags_to_file` with an optional `artists_list`
parameter. Each format-specific writer respects the config flag the
same way enrichment.py does:
- ID3: TPE1 stays as joined display string + TXXX:Artists multi-value
- Vorbis/Opus/FLAC: `artist` display string + `artists` multi-value key
- MP4: \xa9ART as list when on, single string when off
Scanner retag derives the per-artist list by splitting AcoustID's
credit through the existing `split_artist_credit` helper (same
separators the matching layer already uses).
Backward compatible: callers that don't pass `artists_list` get the
exact same single-string write as before. No regression for the
write_artist_image button or any other tag_writer caller.
15 tests on the candidate helper + duration guard.
13 tests on the tag_writer multi-value path (write/skip/single/
no-list cases for FLAC + the config-gate helper).
4 new scanner regression tests pinning lower-ranked candidate
suppression, no-suppression when no candidate matches, duration
mismatch skip, no-skip when duration matches.
Existing scanner tests updated for the new 11-column SQL select
(added duration column to fake schema + test row tuples).
Full suite: 3097 passed. Ruff clean.
Closes#589. Tracks from MTV Unplugged / Live At / unplugged albums
consistently failed AcoustID verification with "Version mismatch:
expected (live) but file is (original)". Two upstream bugs fed into
the false positive — the AcoustID gate itself was correctly catching
the wrong file Tidal had selected. Codex diagnosed all three layers,
this fixes the two upstream causes and leaves the verifier alone.
Bug 1 — album-scoped library check false-misses owned albums
`core/downloads/master.py:184` scored "Shy Away (MTV Unplugged Live)"
(source title from playlist) vs "Shy Away" (local DB stored title)
with raw string similarity. Massive length asymmetry → ~0.3 → below
the 0.7 threshold → marked missing. Combined with the
`allow_duplicates and batch_is_album` short-circuit that disables
the global fallback for album downloads, the user's already-owned
album re-triggered every track for download. Explains the screenshot
showing "0 found / 7 missing" on an album the user manually placed.
New pure helper `core/matching/album_context_title.py:strip_redundant_album_suffix`
strips trailing parenthetical / bracket / dash suffixes whose tokens
are fully subsumed by the album context — at least one version
marker (live / unplugged / acoustic / session / concert / tour)
overlapping with the album, and every other token is either a
known marker, a year, a tolerated noise word, or a word from the
album title. Album-context-implied "live" added when the album
mentions unplugged / concert / tour / session.
Wired into the album-confirmed scope ONLY (not global matching).
Compares both raw and normalized source titles per album track and
takes the max similarity, so the helper returning the input
unchanged (when album doesn't imply version context) preserves
the pre-fix behavior.
Bug 2 — Tidal qualifier filter only ran on fallback searches
`core/tidal_download_client.py:345` set `is_fallback = attempt_idx > 0`
and only filtered when `is_fallback and required_qualifiers`. Primary
search returned all results unfiltered, so a query for "Shy Away
(MTV Unplugged Live)" could accept the studio cut if Tidal happened
to rank it first. Now the qualifier filter applies to BOTH primary
and fallback search attempts — log message updated to indicate
which path triggered.
Bug 3 — qualifier check ignored album.name
The legacy `_track_name_contains_qualifiers` only inspected the
track name. For concert / unplugged releases the live signal
typically lives in the album title, not the track title. New
`_track_matches_qualifiers` accepts a track object and inspects
both `track.name` AND `track.album.name`. Legacy helper preserved
to keep its existing test contract.
AcoustID version-mismatch gate at core/acoustid_verification.py
left intact — it correctly catches genuinely-wrong files that slip
through upstream filters. The In My Feelings (Instrumental) test
that pins this behavior continues to pass.
19 tests on the album-context helper covering MTV Unplugged
variants, dash/parens/brackets suffix shapes, year tolerance,
plural-form markers, the implied-live set, anti-regression cases
(instrumental/remix on a studio album must NOT be stripped),
empty/none defensive paths.
13 tests on the Tidal qualifier helper covering legacy
track-name-only behavior preserved, qualifier in track name alone,
qualifier in album name alone (the MTV Unplugged scenario),
multi-qualifier requirements, no-qualifiers always passes,
defensive against missing track.album, word-boundary avoiding
substring false-matches, _extract_qualifiers picking up live +
unplugged from the user's exact reporter query.
Full suite: 3053 passed.
Discord report (Foxxify): the AcoustID scanner repair job flagged
multi-artist tracks as Wrong Song because AcoustID returns the
FULL credit ("Okayracer, aldrch & poptropicaslutz!") while the
library DB carries only the primary artist ("Okayracer"). Raw
SequenceMatcher similarity scored ~43% — well below the 60%
threshold — so the scanner created a finding even though the
audio was correct. User couldn't fix without lowering the global
artist threshold to ~30% (which would let real mismatches through).
# Fix
Extended the shared `core/matching/artist_aliases.py::artist_names_match`
helper (originally lifted for #441) with credit-token splitting.
When the actual artist string contains common separators —
- punctuation: `,` `&` `;` `/` `+`
- keywords (whitespace-bounded): `feat.` `ft.` `featuring` `with`
`vs.` `x`
— the helper splits into individual contributors and checks each
against the expected artist. Primary-in-credit cases now resolve
at 100% instead of 43%.
Two pattern groups because punctuation separators don't need
surrounding whitespace, but keyword separators MUST be
whitespace-bounded — otherwise we'd split artists with `x` /
`with` etc. in their names ("JAY-X" → "JAY-" / "" issue).
Composes with the existing alias path: cross-script multi-artist
credits ("Hiroyuki Sawano" expected, "澤野弘之, FeaturedJp"
actual) work via alias-token-against-credit-token compare.
# Wire-in
Scanner at `core/repair_jobs/acoustid_scanner.py:202` replaces
the raw `SequenceMatcher` call with `artist_names_match`. Pass
RAW artist strings (not pre-normalised by `_normalize`) so the
splitter can recognise separators — `_normalize` strips ALL
punctuation, which destroyed the very tokens the splitter needs.
The AcoustID post-download verifier (`core/acoustid_verification.py`)
already routes through `_alias_aware_artist_sim` which calls the
same helper — gets the multi-value benefit automatically without
a separate wire-in.
# New `split_artist_credit` exported helper
Pure-function helper for callers who want token-level access to
the credit list (debugging, UI, future per-token enrichment). Same
splitter logic, exposed as a top-level function.
# Tests added (14)
`tests/matching/test_artist_aliases.py` (+11):
- `TestSplitArtistCredit` — parametrised across 12 credit-string
formats (comma, ampersand, semicolon, slash, plus, feat./ft./
featuring, with, vs., x, single-token, empty), drops empty
tokens, strips per-token whitespace
- `TestMultiValueCreditMatching` — reporter's exact case
(Okayracer in 3-artist credit → 100%), primary in middle/end of
credit, genuine-mismatch still fails, single-token actual falls
through to direct compare, multi-value composes with aliases,
threshold still respected
`tests/test_acoustid_scanner.py` (+3):
- Reporter's case end-to-end through `_scan_file` — fingerprint
99% / title 100% / multi-artist credit → no finding created
- Genuine artist mismatch still creates finding (no false
suppression of real mismatches)
- `JobResultStub` minimal scaffold for the integration tests
# Verification
- 14 new tests pass (49 helper + 5 scanner total in their files)
- 110 matching + scanner tests pass total
- 2584 full suite passes (+25 from baseline 2559)
- Ruff clean
- Reporter's exact case (Okayracer in `Okayracer, aldrch &
poptropicaslutz!`) now scores 100% match → no Wrong Song flag
Issue #442 — files tagged with one spelling of an artist's name
(Japanese kanji `澤野弘之`) get quarantined when SoulSync expects the
romanized spelling (`Hiroyuki Sawano`). Raw similarity comparison
scored 0% across scripts. MusicBrainz exposes alternate-spelling
aliases on every artist record but the verifier never consulted
them.
This commit adds the pure helper that does the alias-aware
comparison. No I/O, no DB access, no network. Caller supplies the
aliases (looked up from library DB or live MB by later commits in
this PR). Default threshold matches the verifier's existing
`ARTIST_MATCH_THRESHOLD` (0.6) so wiring this in preserves current
pass/fail semantics on the no-alias path.
# API
```
artist_names_match(expected, actual, *, aliases=None,
threshold=0.6, similarity=None)
-> (matched: bool, best_score: float)
```
- Direct compare first (fast path + baseline score)
- If below threshold, score each alias against `actual`
- First alias to clear threshold → match
- Returns the best score across all candidates so callers can log
the score they made the decision on
```
best_alias_match(expected, actual, aliases=None, *, similarity=None)
-> (winner: Optional[str], best_score: float)
```
Companion helper for callers that want to surface WHICH alias
triggered the match (debug logs, UI explanations). No threshold —
purely informative.
# Architectural choices
- **Pure function**: no I/O. Caller (verifier, future matching-engine
consumers) owns alias lookup strategy + threshold tuning.
- **Custom similarity callable**: lets the verifier pass its
parenthetical-stripping normaliser without this module having to
know about it. Defaults to lowercase + SequenceMatcher (matches
the verifier's existing behaviour).
- **Defensive coercion**: aliases input handles None entries, empty
strings, non-string types, sets, tuples, lists — caller may feed
raw MB response data without cleaning first.
- **Backward compat**: `aliases=None` or empty → behaves identically
to a plain similarity check. Paths not yet wired up to alias lookup
see no behaviour change.
# Tests (28)
- Direct compare (no aliases): exact / case / whitespace / fuzzy /
different
- Cross-script with aliases: Japanese ↔ romanized (reporter's case 1),
Cyrillic ↔ Latin (reporter's case 2), symmetric direction, no-match
fallthrough so aliases don't mask genuine mismatches
- Aliases input handling: None, empty, set, tuple, None-entries,
non-string entries
- Threshold: default matches verifier's 0.6, custom stricter, custom
looser
- Custom similarity: applies to both direct + alias compare
- Best-alias-match introspection
- Backward compat parametrised across 5 cases
# What this commit does NOT do
This is the helper module + tests only. Subsequent commits in this
PR populate aliases (MB worker), provide live MB lookup with cache
for un-enriched artists, and wire the helper into the AcoustID
verifier where the quarantine decision actually fires.
