Add songs to playlists with drag and drop

model/album.go

@@ -38,7 +38,13 @@ type Album struct {
 	UpdatedAt            time.Time `structs:"updated_at" json:"updatedAt"`
 }
 
-type Albums []Album
+type (
+	Albums []Album
+	DiscID struct {
+		AlbumID    string `json:"albumId"`
+		DiscNumber int    `json:"discNumber"`
+	}
+)
 
 type AlbumRepository interface {
 	CountAll(...QueryOptions) (int64, error)

model/playlist.go

@@ -44,7 +44,10 @@ type PlaylistTracks []PlaylistTrack
 
 type PlaylistTrackRepository interface {
 	ResourceRepository
-	Add(mediaFileIds []string) error
+	Add(mediaFileIds []string) (int, error)
+	AddAlbums(albumIds []string) (int, error)
+	AddArtists(artistIds []string) (int, error)
+	AddDiscs(discs []DiscID) (int, error)
 	Update(mediaFileIds []string) error
 	Delete(id string) error
 	Reorder(pos int, newPos int) error