New album_grouping module exports the SQL CASE-WHEN expression for the
metadata group key shared by both new queries. The expression has three
priorities: (1) usable album tag => album|artist key, (2) fallback to
existing folder-based album_group_key, (3) orphan bucket
'__unknown_album__'.
get_albums_metadata_grouped runs the grouped query and returns
LocalAlbum rows with directory_path empty and source_folders populated
with the comma-separated list of contributing folders. Pinned 'Unknown
Album' to the bottom via ORDER BY.
get_album_tracks_metadata fetches all tracks belonging to a metadata
group, ordered by disc/track number.
Adds idx_local_tracks_album_lookup index on (album, album_artist,
artist) to keep the GROUP BY index-backed at 16k+ track libraries.
LocalAlbum gains an optional source_folders field (None for folder-
grouped rows; Some(comma-separated) for metadata-grouped rows). The
existing folder-grouped query continues to populate it as None so no
downstream consumer breaks.
Hidden filter (album_settings.hidden) does not apply to metadata-
grouped rows in this iteration; revisiting requires extending
album_settings to support metadata keys.
cc
- Imports reorganized: use lofty::prelude::*, lofty::tag::*, lofty::picture::*
- Picture::new_unchecked -> Picture::unchecked().pic_type().mime_type().build()
- set_year/remove_year -> set_date/remove_date with Timestamp
- ItemKey::Unknown("ISRC") -> ItemKey::Isrc
- save_to_path(path) -> save_to_path(path, WriteOptions::default())
- get_string/remove_key now take ItemKey by value
- Bump qbz-library crate lofty dep to 0.23
cc
Create qbz-library crate with:
- LibraryScanner: directory scanning for audio files
- MetadataExtractor: audio metadata extraction via lofty
- LibraryDatabase: SQLite persistence with WAL mode
- CueParser: CUE sheet parsing for single-file albums
- Thumbnails: artwork extraction and thumbnail generation
- Tag sidecar: album metadata override files
src-tauri re-exports from qbz-library for backwards compatibility.
Enables TUI/headless clients to manage local libraries without Tauri.
vicrodh