Refactor getMusicDirectory

server/subsonic/helpers.go

@@ -255,3 +255,20 @@ func ChildrenFromAlbums(ctx context.Context, als model.Albums) []responses.Child
 	}
 	return children
 }
+
+// TODO: Should the type be encoded in the ID?
+func getEntityByID(ctx context.Context, ds model.DataStore, id string) (interface{}, error) {
+	ar, err := ds.Artist(ctx).Get(id)
+	if err == nil {
+		return ar, nil
+	}
+	al, err := ds.Album(ctx).Get(id)
+	if err == nil {
+		return al, nil
+	}
+	mf, err := ds.MediaFile(ctx).Get(id)
+	if err == nil {
+		return mf, nil
+	}
+	return nil, err
+}