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feat(genres): local index genre browse with Subsonic fallback (#937)

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* feat(genres): genre detail browse via local index with aligned counts

Move genre detail albums/play/shuffle onto the local library index with
Albums-style in-page scroll, session restore, and genre-scoped stash. Unify
genre album totals between the cloud and detail pages via
library_get_genre_album_counts, and fix grouped browse totals to count
distinct albums rather than matching tracks.

* perf(genres): local genre browse with scoped counts cache

Add dedicated Rust genre album pagination and indexes, slice-mode grid
loading, library-filter-aware counts, and a long-lived in-memory catalog
cache invalidated on sync so genre pages avoid repeated full-library SQL.

* fix(genres): restore scroll after album back; play hold-to-shuffle

Pin restore display count in refs so clearing the return stash no longer
reloads the genre grid mid-restore. Load the first SQL page only (60 rows),
use long-press on Play for shuffle, and add genre play tooltips.

* fix(genres): fall back to Subsonic byGenre when local index unavailable

Genre detail album grid now matches All Albums: try library_list_albums_by_genre
first, then getAlbumsByGenre when the index is off, not ready, or errors.

* docs: add CHANGELOG and credits for PR #937
This commit is contained in:
cucadmuh
2026-06-01 04:20:18 +03:00
committed by GitHub
parent d3e5a6b704
commit ddf10ee01d
42 changed files with 1952 additions and 139 deletions
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src-tauri/crates/psysonic-library/migrations/010_genre_album_browse_index.sql
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-- Genre album browse: filter by (server, genre) then group by album_id.
CREATE INDEX IF NOT EXISTS idx_track_genre_album_browse
ON track(server_id, genre COLLATE NOCASE, album_id)
WHERE deleted = 0
AND genre IS NOT NULL
AND TRIM(genre) != ''
AND album_id IS NOT NULL
AND album_id != '';
src-tauri/crates/psysonic-library/migrations/011_genre_album_name_browse_index.sql
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@@ -0,0 +1,8 @@
-- Genre album browse sort: (server, genre, album name, album_id) covering walk.
CREATE INDEX IF NOT EXISTS idx_track_genre_album_name_browse
ON track(server_id, genre COLLATE NOCASE, album COLLATE NOCASE, album_id)
WHERE deleted = 0
AND genre IS NOT NULL
AND TRIM(genre) != ''
AND album_id IS NOT NULL
AND album_id != '';