When checking stored references to cover images (whether embedded or
external), it's possible that configured patterns do no match, and a
valid error should be returned in those cases.
This commit adds support for loading cover art from media file
directories, according to configured filename priorities (of which an
additional, special choice of `embedded` is given).
Cover art paths are resolved during scanning and stored in the database
as part of the `album.cover_art_path` column; if embedded cover art is
matched, this will default to the path of the media file itself, and if
no cover art is matched at all.
Similarly, the `album.cover_art_id` column will default to a reference
to `media_file.id` if embedded cover art is wanted, but if an external
cover art file is matched, this will instead be set to a reference to
the `album.id` value itself, prefixed with the `al-` constant.
Stored cover art paths are once again resolved and matched against
configuration when covers are requested; that is, any change in
configuration between scanning and requesting cover art may not return
correct data until a re-scan is complete.
Tests will be added in future commits.
- Create model.DataStore, with provision for transactions
- Change all layers dependencies on repositories to use DataStore
- Implemented persistence.SQLStore
- Removed iTunes Bridge/Importer support
Alex Palaistras