move external playback fetch to context

src/renderer/features/now-playing/components/play-queue.tsx

@@ -237,7 +237,6 @@ const EmptyQueueDropZone = () => {
                     const sourceServerId = (
                         args.source.item?.[0] as unknown as { _serverId: string }
                     )?._serverId;
-
                     const sourceItemType = args.source.itemType as LibraryItem;
 
                     switch (args.source.type) {
@@ -297,7 +296,7 @@ const EmptyQueueDropZone = () => {
                             const folderIds = folders.map((folder) => folder.id);
 
                             // Handle folders: fetch and add to queue
-                            if (folderIds.length > 0) {
+                            if (folderIds.length > 0 && sourceServerId) {
                                 playerContext.addToQueueByFetch(
                                     sourceServerId,
                                     folderIds,

src/renderer/features/player/context/player-context.tsx

@@ -890,6 +890,9 @@ export const usePlayer = () => {
  * @param args - The arguments to use to fetch the data
  * @returns The songs to add to the queue
  */
+
+const EXTERNAL_SERVER_ID = 'musicbrainz';
+
 export async function fetchSongsByItemType(
     queryClient: QueryClient,
     serverId: string,
@@ -901,6 +904,23 @@ export async function fetchSongsByItemType(
 ) {
     const songs: Song[] = [];
 
+    if (serverId === EXTERNAL_SERVER_ID) {
+        if (args.itemType === LibraryItem.ALBUM) {
+            for (const albumId of args.id) {
+                const album = await queryClient.fetchQuery(
+                    albumQueries.detail({
+                        query: { id: albumId },
+                        serverId: EXTERNAL_SERVER_ID,
+                    }),
+                );
+                songs.push(...(album?.songs ?? []));
+            }
+            return songs;
+        }
+
+        return songs;
+    }
+
     switch (args.itemType) {
         case LibraryItem.ALBUM: {
             const albumSongsResponse = await getAlbumSongsById({