Pipeline-driven Auto-Sync runs against any ListenBrainz playlist
(Weekly Jams, Weekly Exploration, Top Discoveries, etc.) would sit
on ``Refreshing: "<name>"`` with no UI updates for 5-7 minutes
before the pipeline progressed. Two real bugs stacked:
1. **Double discovery.** The refresh handler called
``_maybe_discover`` (matching engine, per-track Spotify/iTunes/
Deezer matches) inline for any source returning
``needs_discovery=True`` tracks. Phase 2 of the pipeline then
ran the SAME matching engine via ``run_playlist_discovery_worker``
on the same tracks. The refresh-side run blocked the loop with
zero progress emission; Phase 2's already has the timed
progress-poll pattern. So LB tracks discovered twice, the first
time silently.
Pipeline now sets ``skip_discovery=True`` on its refresh config.
The handler honors the flag and lets Phase 2 handle discovery
end-to-end. Standalone callers (Sync-page tab, registration
action) leave the flag unset so they still get matched_data
on refresh.
2. **No targeted LB refresh.** The LB adapter's ``refresh_playlist``
called ``manager.update_all_playlists()`` — the only refresh
entry-point the manager exposed — which re-pulls every cached
LB playlist's details from the API (~12+ round-trips) even
when only one playlist needed refreshing. Wasteful;
tax-on-everyone for one-playlist work.
Added ``LBManager.refresh_playlist(mbid)`` — reads the cached
playlist_type, fetches just that playlist's details, runs the
normal ``_update_playlist`` upsert path. Defaults type to
``user`` for un-cached mbids so new-playlist discovery still
works. Skips ``_cleanup_old_playlists`` and
``_ensure_rolling_mirrors_from_cache`` (wasted work for a
single-playlist refresh).
Also: killed a silent ``except Exception: pass`` in the LB
adapter's old refresh wrapper that was masking every LB API
failure as a stale-cache hit. Refresh errors now log with full
traceback at warning level and propagate ``None`` so the outer
handler at ``refresh_mirrored.py:104`` counts the error and
surfaces it to the run-history error tally.
Pinned with 12 new unit tests across:
- ``tests/test_listenbrainz_manager.py`` (8): targeted refresh
happy path, unauthenticated guard, empty-mbid guard, upstream
``None`` return, default playlist_type for unknown mbid,
exception propagation, cost guard skipping cleanup, skipped-
when-unchanged signal
- ``tests/test_playlist_sources_adapters.py`` (3): adapter uses
targeted call (not legacy), adapter returns ``None`` on manager
error (not silent swallow), adapter resolves synthetic series
ids before calling the manager
- ``tests/automation/test_handlers_playlist.py`` (1):
skip_discovery flag bypasses ``_maybe_discover`` end-to-end
Five pre-existing lint errors on dev baseline (all introduced May 25-26
before this branch was cut) were blocking CI on this PR. Cleared as
courtesy fixes so the merge isn't gated on unrelated tech debt:
- web_server.py:22613 — F811 duplicate `urlparse` import inside
`_parse_itunes_link_url` (already imported at module top, line 20).
Removed from the inline `from urllib.parse import parse_qs, urlparse`;
kept `parse_qs` since that one is only used here.
- core/listenbrainz_manager.py:746 — S110 silenced with
`# noqa: S110 — best-effort lookup, delete proceeds either way`.
Matches the existing project convention used in web_server.py:1693,
core/watchlist/auto_scan.py:463, core/library_reorganize.py:548.
- core/playlists/sources/listenbrainz.py:236 — B905 `zip()` without
explicit `strict=`. Added `strict=False` — preserves existing
behaviour where `matched` can legitimately be shorter than
`match_indices` on partial discover failure.
- core/playlists/sources/listenbrainz.py:273 — S110 silenced with
`# noqa: S110 — caller falls back to last cached playlist on
refresh failure`.
- core/playlists/sources/soulsync_discovery.py:105 — S110 silenced
with `# noqa: S110 — manager persists last_generation_error on
failure; surface existing snapshot`. The existing multi-line
comment that already explained the swallow was rolled into the
noqa justification so the rule + reason live on one line.
Ruff `python -m ruff check .` now passes; 664 discovery + metadata
tests still pass.
ListenBrainz publishes "Weekly Jams for X" / "Weekly Exploration
for X" with a fresh MBID every week, and "Top Discoveries of YYYY
for X" / "Top Missed Recordings of YYYY for X" with a fresh MBID
every year. Auto-mirroring those per-period yielded one mirrored-
playlist row per week/year — useless for Auto-Sync schedules
because the underlying LB playlist never updates, only a brand new
playlist replaces it. The user accumulates 100+ dead Weekly Jams
rows per year if they discover regularly.
This commit collapses each family into a single ROLLING mirror
keyed by a synthetic ``source_playlist_id`` (e.g.
``lb_weekly_jams_Nezreka``). Each new period UPSERTs into the same
row, so the user gets one stable Auto-Sync schedule per series
that automatically picks up the latest period's tracks on every
refresh. Non-series LB playlists (user-created, collaborative,
Last.fm radios for a specific seed) continue to mirror under
their per-playlist MBID as before. Per-period LB playlists are
still visible + usable on the LB Sync tab — only the mirror layer
collapses.
- ``core/playlists/lb_series.py`` (new) — series-detect helper
with regex patterns + canonical-name + LIKE-pattern template
for each known LB family. Exposes
``detect_series(title)``, ``is_series_synthetic_id(id)``, and
``list_series_synthetic_ids()`` so both the JS auto-mirror hook
and the LB adapter can speak the same language.
- ``GET /api/listenbrainz/series-detect?title=...`` — thin HTTP
shim around ``detect_series`` so the auto-mirror JS doesn't
duplicate the regex.
- ``ListenBrainzPlaylistSource.get_playlist`` now recognizes
synthetic series ids — it queries the LB cache for the newest
cache row whose title matches the series' LIKE pattern and
resolves to that row's MBID before fetching tracks. The mirror's
meta keeps the synthetic id so refreshes always re-resolve to
the latest period.
- ``_mirrorListenBrainzAfterDiscovery`` (sync-services.js) calls
the new detect endpoint when discovery completes — if a match
comes back it swaps the per-period MBID for the synthetic id +
the canonical name. Existing Last.fm radio routing logic stays
intact (Last.fm radios aren't a series).
- ``ListenBrainzManager._cleanup_per_period_series_mirrors`` —
one-shot consolidation sweeper runs in ``_cleanup_old_playlists``
+ deletes any legacy per-period mirror rows so the consolidated
rolling mirror is the only one left. Idempotent — only matches
per-period titles ("Weekly Jams for ..., week of ...") and never
the canonical rolling-mirror titles ("ListenBrainz Weekly
Jams").
- 11 new tests pin the detector + synthetic-id helpers; 236 total
across adapter + automation + lb-series suites green.
Adds ``discover_tracks(tracks) -> List[NormalizedTrack]`` to the
PlaylistSource interface. Sources whose tracks already carry
provider IDs (Spotify, Tidal, Qobuz, YouTube, Deezer, Spotify
public, iTunes link, SoulSync Discovery) inherit a no-op default;
ListenBrainz + Last.fm override to run the matching engine.
This closes the last gap before LB / Last.fm / SoulSync Discovery
can land as Sync-page mirror sources: the refresh handler now
calls ``source.discover_tracks(...)`` whenever a source returns
tracks with ``needs_discovery=True``, so mirrored LB rows arrive
already discovered + ready for the sync pipeline. Previously, LB
playlists ran through a separate state-machine worker tied to the
Discover-page UI, with results stored in ``discovery_cache``
instead of ``mirrored_playlist_tracks.extra_data``.
Changes:
- ``core/playlists/sources/base.py`` — PlaylistSource switches from
Protocol to ABC so a concrete default for ``discover_tracks``
can live on the base class. The four real-work methods stay
``@abstractmethod``; instantiating an adapter that forgets one
fails loudly at construction.
- ``core/discovery/matching.py`` (new) — pure ``match_mb_tracks``
helper that runs Strategy-1-only matching-engine queries against
Spotify (primary) or iTunes (fallback). No state machine, no
discovery-cache writes, no wing-it stub — that richer flow stays
in ``core/discovery/listenbrainz.py`` for the Discover-page UI.
- ``ListenBrainzPlaylistSource`` + ``LastFMPlaylistSource`` take
an optional ``discover_callable`` constructor arg. Last.fm reuses
the LB implementation since the track shape is identical.
- ``bootstrap.build_playlist_source_registry`` accepts a
``discover_callable`` kwarg and wires it into LB + Last.fm
adapters.
- ``web_server.py`` boot constructs the discovery callable from the
existing matching engine + ``_discovery_score_candidates`` +
Spotify / iTunes clients, passes through to the registry.
- ``refresh_mirrored.py`` adds a small ``_maybe_discover`` helper
that calls ``source.discover_tracks(...)`` between fetch and
``to_mirror_track_dict`` projection — only fires when at least
one track has ``needs_discovery=True``, so the normal Spotify /
Tidal / etc. refresh path stays a zero-cost pass-through.
Tests:
- 5 new adapter tests: default no-op pass-through, LB discovery
with mixed matches/misses, LB no-callable fallback, Last.fm
shares the LB implementation, mirror-dict spotify_hint emit.
- 1 new automation test: end-to-end LB refresh with a stub
discover_callable proves the matched_data lands in
``mirror_playlist_tracks.extra_data`` after the registry
refresh + discover hop.
225 tests across adapter + automation suites green.
Phase 1a of the Discover-to-Sync unification. The mirrored-playlist
refresh handler used to branch per-source through a ~190-line
if/elif chain (Spotify, Spotify public, Deezer, Tidal, YouTube).
Each branch hand-built its own ``extra_data`` JSON for the matched-
data block. With every new source we considered for Sync-page mirror
support (ListenBrainz, Last.fm radio, SoulSync Discovery, iTunes
link), that chain would have grown a new elif.
This commit lifts the per-source logic into the existing adapter
layer and collapses the dispatch to a registry lookup:
- ``core/playlists/sources/deezer.py`` — new adapter so the registry
covers every source the refresh handler previously branched on.
- ``core/playlists/sources/bootstrap.py`` — single helper that builds
a populated registry from injected getter callables. Both
``web_server.py`` boot and the automation test fixtures call it,
so the two construction paths can't drift.
- ``core/playlists/sources/base.py`` — ``to_mirror_track_dict``
projection helper centralises the NormalizedTrack → DB-row
conversion (including the discovered/matched_data and
spotify_hint extra_data shapes the downstream sync + wishlist
consumers already expect).
- Spotify adapter now populates ``extra['discovered']`` + an
``extra['matched_data']`` block when fetching via the authed API,
so Spotify mirrors keep landing pre-discovered (matches the
pre-refactor contract pinned by
``test_spotify_refresh_writes_to_db``).
- Spotify-public adapter populates ``extra['spotify_hint']`` so the
discovery worker can skip its search step and jump straight to
enrichment for the known track ID.
- All artist-name fields now project to first-artist-only across
every adapter — matches the pre-refactor mirror_playlist DB shape
(``t.artists[0]``).
``refresh_mirrored.py`` shrinks ~190 → ~80 lines and keeps:
- the file/beatport unrefreshable-source filter,
- URL extraction from ``description`` via ``require_refresh_url``
for spotify_public + youtube,
- the Spotify-public → authed-Spotify fallback when the user is
signed in (handler-level branch, not in any adapter),
- the Tidal-not-authenticated soft-skip log (skip, not error),
- existing-extra_data preservation across refreshes,
- the ``playlist_changed`` automation event emit on track-set delta.
Test scaffolding:
- ``_build_deps`` in ``tests/automation/test_handlers_playlist.py``
now builds a default registry from the passed clients via
``build_playlist_source_registry``, so existing refresh tests
exercise the same path without per-test changes. New tests cover
Tidal-not-authed soft-skip, Deezer refresh writes plain tracks,
YouTube refresh reads URL from description, and Spotify-public
uses authed Spotify when signed in.
- 4 new adapter tests for Deezer projection +
``to_mirror_track_dict`` (minimal track, Spotify matched_data,
Spotify-public spotify_hint).
- ``playlist_source_registry`` field on ``AutomationDeps`` defaults
to ``None`` so the other 5 automation test files (which don't
exercise refresh_mirrored) keep working unchanged.
220 tests across automation + adapter suites green.
Groundwork for unifying Discover-page playlists (ListenBrainz, Last.fm
radio, SoulSync Discovery) with Sync-page playlists (Spotify, Tidal,
Qobuz, YouTube, Spotify public, iTunes link). All nine sources now
expose the same `PlaylistSource` Protocol so callers stop having to
branch per-source.
This commit only adds the abstraction — no dispatch sites collapse to
the registry yet, no DB or UI changes. Adapters wrap existing clients
via injected getter callables to avoid eager imports of web_server.py
globals.
- core/playlists/sources/base.py — PlaylistMeta, NormalizedTrack,
PlaylistDetail dataclasses + PlaylistSource Protocol with
supports_listing / supports_refresh / requires_auth capability
flags. needs_discovery flag on NormalizedTrack marks tracks that
carry raw MB metadata (LB, Last.fm) vs tracks already matched to a
provider ID (everything else).
- core/playlists/sources/registry.py — thread-safe lazy-factory
registry with instance caching + re-register invalidation.
- nine adapters in core/playlists/sources/ wrapping SpotifyClient,
TidalClient, QobuzClient, spotify_public_scraper, the YouTube +
iTunes-link parsers (via injected callables), ListenBrainzManager,
Last.fm radio rows in the ListenBrainz cache, and
PersonalizedPlaylistManager.
- tests/test_playlist_sources_adapters.py — 18 tests covering each
adapter's field projection with fake backing clients, plus
registry lazy-construct + cache + re-register invalidation.
Phase 1 will collapse refresh_mirrored.py's per-source if/elif chain
to a registry lookup and surface ListenBrainz as a Sync-page tab.
Persist per-playlist pipeline run snapshots from the shared playlist pipeline, expose a history API, and upgrade the Auto-Sync modal with live pipeline monitoring, Run now controls, and a runs-style history tab.
Expose playlist-native run and status endpoints that reuse the shared mirrored playlist pipeline engine while routing progress into playlist UI state.
Add a Run Pipeline action to mirrored playlist cards and modals with live status polling, and make the shared pipeline lock atomic for manual and scheduled callers.
Extract the all-in-one mirrored playlist lifecycle into core/playlists/pipeline.py so automation becomes a thin adapter. Preserve the existing automation action and behavior while making the pipeline reusable by future direct playlist UI controls.
Return normalized source_ref metadata from mirrored playlist APIs so the UI no longer has to infer editable refresh links from description fields. Accept Spotify embed URLs during source-ref repair and add coverage for source-ref health reporting.
Centralize mirrored playlist source reference normalization so edited links and IDs are stored consistently. Preserve URL-backed refresh refs, surface missing-source refresh failures, count background sync failures in pipeline summaries, and retry guarded automation skips after a short delay instead of losing a scheduled run. Add focused coverage for source refs, mirrored playlist source updates, refresh failures, and guarded retry behavior.
Catches the silent excepts the awk-based earlier sweeps missed:
- Bare `except:` followed by `pass` (also swallows KeyboardInterrupt
and SystemExit — actively wrong). Upgraded to `except Exception as
e: logger.debug("...: %s", e)`. ~14 sites across connection_detect,
soulseek_client, listenbrainz_manager, watchlist_scanner,
youtube_client, navidrome_client, jellyfin_client, web_server.
- `except Exception:` + pass that the awk pattern missed (e.g.
multi-line or unusual whitespace). ~31 sites across automation_engine,
database_update_worker, music_database, spotify_client, web_server,
others.
- 14 legitimate cleanup sites left silent with explicit `# noqa: S110`
+ comment explaining why (atexit handlers, finally-block conn.close
calls). Logging during shutdown can itself crash because file handles
get torn down before the handler fires.
Also enables `S110` rule in pyproject.toml so this pattern fails CI
going forward — drift fails at PR review instead of at runtime against
a wedged worker thread. Tests path keeps S110 ignored (test fixtures
legitimately use try-except-pass for cleanup).
Adds a WHATS_NEW entry to helper.js summarizing the full #369 sweep.
Verified: `python -m ruff check .` → All checks passed.
Verified: `python -m pytest tests/` → 2188 passed.
Closes#369
Final lift in the web_server.py extraction effort. Pulls two route
handlers + one background worker out of `web_server.py` into new
focused packages:
- `core/streaming/prepare.py` — 258-line stream-prep worker that
downloads a track to the local Stream/ folder for the browser audio
player.
- `core/playlists/explorer.py` — 305-line route handler for
`POST /api/playlist-explorer/build-tree` that streams an NDJSON
discography tree from a mirrored playlist.
What `prepare_stream_task` does:
1. Reset stream state to 'loading' with the new track info.
2. Clear any prior file from Stream/ (only one stream lives there).
3. Spin up a fresh asyncio event loop and `soulseek_client.download()`.
4. Poll progress every 1.5s. Queue timeout 15s; overall 60s.
5. On succeeded + bytes-match: find the file with retry, move into
Stream/, signal slskd completion, mark state 'ready' with file_path.
6. On error/timeout/cancel: state goes to 'error' or 'stopped'.
7. Finally: tear down the event loop cleanly.
What `playlist_explorer_build_tree` does:
1. Validate request, load playlist + tracks from DB.
2. Pick active metadata source (Spotify if authed, else fallback).
3. Group tracks by artist using discovered matched_data when the
provider matches the active source.
4. Stream NDJSON: meta line → one artist line per group → complete line.
5. Per artist: cache check → resolve discography → tag releases with
`in_playlist` flag based on title-similarity match → filter by mode
(`albums` = only matches; `discographies` = full disco).
6. Mark playlist as explored on completion.
Strict 1:1 byte parity:
Both functions exposed their dependencies through proxy patterns
established in earlier lifts (PR4–PR8). For prepare_stream_task,
`stream_state` is a deps property; for the explorer, Flask `request` /
`jsonify` / `Response` are injected via deps so the lifted body keeps
its native syntax. Both lifts verified ZERO diff against the original
after `deps.X` → global X normalization.
258 lines orig = 258 lines lifted (prepare_stream_task).
305 lines orig = 305 lines lifted (explorer).
Bonus cleanup: web_server.py's module-level `import shutil` and
`import glob` were now unused (only `_prepare_stream_task` used them
at module scope; every other reference is via inline `import shutil`
in respective function bodies). Removed both module-level imports —
ruff caught the F811 redefinitions and confirmed they're truly
redundant.
Dependencies for `PrepareStreamDeps` (11 fields):
config_manager, soulseek_client, stream_lock, project_root,
docker_resolve_path, find_streaming_download_in_all_downloads,
find_downloaded_file, extract_filename, cleanup_empty_directories,
plus 2 stream_state property delegates.
Dependencies for `PlaylistExplorerDeps` (9 fields):
Flask request/Response/jsonify, spotify_client, get_database,
get_active_discovery_source, get_metadata_fallback_client,
get_metadata_fallback_source, get_metadata_cache.
Tests: 6 new under tests/streaming/test_prepare.py (state init,
Stream/ folder creation + clearing, download-init failure, completed
+ moved + ready state, partial-bytes incomplete-warning path) plus 9
new under tests/playlists/test_explorer.py (5 validation early-exit
paths, streaming response shape with meta/complete lines, mark-
explored side effect, discovered-artist grouping using matched_data,
provider mismatch falling back to raw artist name).
Full suite: 1355 passing (was 1340). Ruff clean.
End of the web_server.py extraction effort. Started at ~45,000 lines
across PR4–PR8 + this commit; finished around 35,000 lines with the
heavy worker + route logic now living in domain-cohesive packages
under core/. The remaining bulk in web_server.py is route handlers,
service initialization, and the deferred 1530-line
`_register_automation_handlers` (startup-only, marginal lift value).
