Subsonic: media retrieval endpoints (stream, download, getCoverArt, getLyrics, getAvatar, hls, getCaptions) with real transcoding, embedded lyrics extraction, and folder permission enforcement

2026-08-23 00:15:00 -05:00
parent b6ec06f272
commit c7b472ab99
11 changed files with 792 additions and 1 deletions
@@ -1,6 +1,10 @@
 package database

-import "database/sql"
+import (
+	"database/sql"
+
+	"git.noroutes.net/NoRoutes/vibetunes/internal/idgen"
+)

 // ListVideoMediaFiles returns every media file the scanner identified as
 // a video (as opposed to audio) track.
@@ -138,3 +142,120 @@ func AlbumsByRecentlyPlayed(db *sql.DB, userID string, limit, offset int) ([]*Al
 	defer rows.Close()
 	return scanAlbums(rows)
 }
+
+// SetSongLyrics replaces a song's stored (unsynced) lyrics with
+// plainText, split into lines. Called by the scanner when a file has
+// embedded lyrics.
+func SetSongLyrics(db *sql.DB, songID, language, plainText string) error {
+	tx, err := db.Begin()
+	if err != nil {
+		return err
+	}
+	defer tx.Rollback()
+
+	if _, err := tx.Exec(`DELETE FROM lyrics WHERE song_id = ?`, songID); err != nil {
+		return err
+	}
+	if plainText == "" {
+		return tx.Commit()
+	}
+	lyricsID := idgen.New("ly")
+	if _, err := tx.Exec(`INSERT INTO lyrics (id, song_id, language, source, synced) VALUES (?, ?, ?, 'embedded', 0)`,
+		lyricsID, songID, language); err != nil {
+		return err
+	}
+	for i, line := range splitLines(plainText) {
+		if _, err := tx.Exec(`INSERT INTO lyrics_lines (id, lyrics_id, line_index, text) VALUES (?, ?, ?, ?)`,
+			idgen.New("ll"), lyricsID, i, line); err != nil {
+			return err
+		}
+	}
+	return tx.Commit()
+}
+
+func splitLines(s string) []string {
+	var lines []string
+	start := 0
+	for i := 0; i < len(s); i++ {
+		if s[i] == '\n' {
+			line := s[start:i]
+			line = trimCR(line)
+			lines = append(lines, line)
+			start = i + 1
+		}
+	}
+	lines = append(lines, trimCR(s[start:]))
+	return lines
+}
+
+func trimCR(s string) string {
+	if len(s) > 0 && s[len(s)-1] == '\r' {
+		return s[:len(s)-1]
+	}
+	return s
+}
+
+// SongLyricsPlainText returns a song's stored lyrics as plain text
+// (lines joined with "\n"), and whether any were found.
+func SongLyricsPlainText(db *sql.DB, songID string) (string, bool, error) {
+	var lyricsID string
+	err := db.QueryRow(`SELECT id FROM lyrics WHERE song_id = ? ORDER BY created_at DESC LIMIT 1`, songID).Scan(&lyricsID)
+	if err == sql.ErrNoRows {
+		return "", false, nil
+	}
+	if err != nil {
+		return "", false, err
+	}
+	rows, err := db.Query(`SELECT text FROM lyrics_lines WHERE lyrics_id = ? ORDER BY line_index`, lyricsID)
+	if err != nil {
+		return "", false, err
+	}
+	defer rows.Close()
+	var lines []string
+	for rows.Next() {
+		var t string
+		if err := rows.Scan(&t); err != nil {
+			return "", false, err
+		}
+		lines = append(lines, t)
+	}
+	if err := rows.Err(); err != nil {
+		return "", false, err
+	}
+	text := ""
+	for i, l := range lines {
+		if i > 0 {
+			text += "\n"
+		}
+		text += l
+	}
+	return text, true, nil
+}
+
+// FindSongByTitleArtist searches for a song by title (and optionally
+// artist name), used by the legacy getLyrics endpoint.
+func FindSongByTitleArtist(db *sql.DB, title, artist string) (*Song, error) {
+	if artist == "" {
+		var id string
+		err := db.QueryRow(`SELECT id FROM songs WHERE title = ? COLLATE NOCASE LIMIT 1`, title).Scan(&id)
+		if err == sql.ErrNoRows {
+			return nil, ErrNotFound
+		}
+		if err != nil {
+			return nil, err
+		}
+		return GetSong(db, id)
+	}
+	var id string
+	err := db.QueryRow(`SELECT s.id FROM songs s
+		JOIN song_artists sa ON sa.song_id = s.id
+		JOIN artists a ON a.id = sa.artist_id
+		WHERE s.title = ? COLLATE NOCASE AND a.name = ? COLLATE NOCASE LIMIT 1`, title, artist).Scan(&id)
+	if err == sql.ErrNoRows {
+		return nil, ErrNotFound
+	}
+	if err != nil {
+		return nil, err
+	}
+	return GetSong(db, id)
+}