Foundation: config, schema/migrations, auth, stable IDs, metadata probing

internal/database/coverart.go

@@ -0,0 +1,70 @@
+package database
+
+import (
+	"database/sql"
+	"errors"
+
+	"git.noroutes.net/NoRoutes/vibetunes/internal/idgen"
+)
+
+type CoverArt struct {
+	ID          string
+	AlbumID     sql.NullString
+	MediaFileID sql.NullString
+	Source      string
+	SourcePath  string
+	MimeType    string
+	ContentHash string
+	Width       int
+	Height      int
+}
+
+const coverArtSelect = `SELECT id, album_id, media_file_id, source, source_path, mime_type, content_hash, width, height FROM cover_art`
+
+func GetCoverArt(db *sql.DB, id string) (*CoverArt, error) {
+	return scanCoverArt(db.QueryRow(coverArtSelect+` WHERE id = ?`, id))
+}
+
+func GetCoverArtForAlbum(db *sql.DB, albumID string) (*CoverArt, error) {
+	return scanCoverArt(db.QueryRow(coverArtSelect+` WHERE album_id = ? ORDER BY updated_at DESC LIMIT 1`, albumID))
+}
+
+func scanCoverArt(row *sql.Row) (*CoverArt, error) {
+	var c CoverArt
+	err := row.Scan(&c.ID, &c.AlbumID, &c.MediaFileID, &c.Source, &c.SourcePath, &c.MimeType, &c.ContentHash, &c.Width, &c.Height)
+	if errors.Is(err, sql.ErrNoRows) {
+		return nil, ErrNotFound
+	}
+	if err != nil {
+		return nil, err
+	}
+	return &c, nil
+}
+
+// UpsertAlbumCoverArt records (or replaces) the discovered cover art
+// source for an album and links it as the album's cover.
+func UpsertAlbumCoverArt(db *sql.DB, albumID, source, sourcePath, mimeType, contentHash string, width, height int) (*CoverArt, error) {
+	var id string
+	err := db.QueryRow(`SELECT id FROM cover_art WHERE album_id = ?`, albumID).Scan(&id)
+	switch {
+	case err == nil:
+		_, err = db.Exec(`UPDATE cover_art SET source=?, source_path=?, mime_type=?, content_hash=?, width=?, height=?, updated_at=strftime('%Y-%m-%dT%H:%M:%fZ','now') WHERE id=?`,
+			source, sourcePath, mimeType, contentHash, width, height, id)
+		if err != nil {
+			return nil, err
+		}
+	case errors.Is(err, sql.ErrNoRows):
+		id = idgen.New("ca")
+		_, err = db.Exec(`INSERT INTO cover_art (id, album_id, source, source_path, mime_type, content_hash, width, height) VALUES (?, ?, ?, ?, ?, ?, ?, ?)`,
+			id, albumID, source, sourcePath, mimeType, contentHash, width, height)
+		if err != nil {
+			return nil, err
+		}
+	default:
+		return nil, err
+	}
+	if err := SetAlbumCoverArt(db, albumID, id); err != nil {
+		return nil, err
+	}
+	return GetCoverArt(db, id)
+}