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minstrel/internal/db/queries/likes.sql
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bvandeusenandClaude Opus 5.5 5b372f61d7
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feat: the same song on several releases counts as one song (M498 #5438)
A single and the album it is on stay two files, since each fulfils its own
release in Lidarr, but they are one song to the listener.

- tracks.song_id links copies; the generated song_key (song_id, else the
  track's own id) is what they share (migration 0076).
- The resolver links each cross-release group every pass (idempotent; only
  with auto-resolve on) and, when a link is new, shares existing likes across
  the song and logs them for sync.
- A like or unlike (web and Subsonic) reaches every copy; each change is
  logged and published so clients update every heart.
- The Liked list and its count show the song once; Shuffle and the mix writer
  take one copy per song.
- A merge keeps the removed copy's song link; "Not the same song" on the
  Across releases tab dismisses the group and undoes the link.

Shared plays ("heard via another copy") are left for a later step.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-08 22:07:55 -04:00

85 lines
2.9 KiB
SQL

-- name: LikeTrack :many
-- A like is on the song (M498 #5438): every copy of it sharing the track's
-- song_key is liked. Returns the tracks newly liked, for the sync log; empty
-- when the song was already liked.
INSERT INTO general_likes (user_id, track_id)
SELECT sqlc.arg(user_id)::uuid, t.id
FROM tracks t
WHERE t.song_key = (SELECT s.song_key FROM tracks s WHERE s.id = sqlc.arg(track_id)::uuid)
ON CONFLICT (user_id, track_id) DO NOTHING
RETURNING track_id;
-- name: UnlikeTrack :many
-- Unlikes the song: every copy sharing the track's song_key. Returns the
-- tracks unliked, for the sync log.
DELETE FROM general_likes
WHERE user_id = sqlc.arg(user_id)::uuid
AND (track_id = sqlc.arg(track_id)::uuid
OR track_id IN (SELECT t.id FROM tracks t
WHERE t.song_key = (SELECT s.song_key FROM tracks s WHERE s.id = sqlc.arg(track_id)::uuid)))
RETURNING track_id;
-- name: ListLikedTrackRows :many
-- One row per liked song: of its copies, the one present on disk, then the
-- one liked first.
SELECT t.* FROM tracks t
JOIN (SELECT DISTINCT ON (lt.song_key) l.track_id, l.liked_at
FROM general_likes l
JOIN tracks lt ON lt.id = l.track_id
WHERE l.user_id = $1
ORDER BY lt.song_key, (lt.missing_since IS NOT NULL), l.liked_at, lt.id) l
ON l.track_id = t.id
ORDER BY l.liked_at DESC, t.id
LIMIT $2 OFFSET $3;
-- name: CountLikedTracks :one
-- Liked songs, each counted once however many releases hold it.
SELECT count(DISTINCT t.song_key) FROM general_likes l
JOIN tracks t ON t.id = l.track_id
WHERE l.user_id = $1;
-- name: ListLikedTrackIDs :many
SELECT track_id FROM general_likes WHERE user_id = $1 ORDER BY liked_at DESC;
-- name: LikeAlbum :exec
INSERT INTO general_likes_albums (user_id, album_id)
VALUES ($1, $2)
ON CONFLICT (user_id, album_id) DO NOTHING;
-- name: UnlikeAlbum :exec
DELETE FROM general_likes_albums WHERE user_id = $1 AND album_id = $2;
-- name: ListLikedAlbumRows :many
SELECT a.* FROM albums a
JOIN general_likes_albums l ON l.album_id = a.id
WHERE l.user_id = $1
ORDER BY l.liked_at DESC
LIMIT $2 OFFSET $3;
-- name: CountLikedAlbums :one
SELECT count(*) FROM general_likes_albums WHERE user_id = $1;
-- name: ListLikedAlbumIDs :many
SELECT album_id FROM general_likes_albums WHERE user_id = $1 ORDER BY liked_at DESC;
-- name: LikeArtist :exec
INSERT INTO general_likes_artists (user_id, artist_id)
VALUES ($1, $2)
ON CONFLICT (user_id, artist_id) DO NOTHING;
-- name: UnlikeArtist :exec
DELETE FROM general_likes_artists WHERE user_id = $1 AND artist_id = $2;
-- name: ListLikedArtistRows :many
SELECT a.* FROM artists a
JOIN general_likes_artists l ON l.artist_id = a.id
WHERE l.user_id = $1
ORDER BY l.liked_at DESC
LIMIT $2 OFFSET $3;
-- name: CountLikedArtists :one
SELECT count(*) FROM general_likes_artists WHERE user_id = $1;
-- name: ListLikedArtistIDs :many
SELECT artist_id FROM general_likes_artists WHERE user_id = $1 ORDER BY liked_at DESC;