add experimental ytmusic playback for external songs

src/renderer/features/player/audio-player/hooks/use-stream-url.tsx

@@ -1,8 +1,12 @@
+import { useQuery } from '@tanstack/react-query';
 import { useMemo, useRef } from 'react';
 
 import { api } from '/@/renderer/api';
+import { youtubeQueries } from '/@/renderer/features/musicbrainz/api/youtube-api';
 import { TranscodingConfig } from '/@/renderer/store';
-import { QueueSong } from '/@/shared/types/domain-types';
+import { QueueSong, ServerType } from '/@/shared/types/domain-types';
+
+const YOUTUBE_WATCH_BASE = 'https://www.youtube.com/watch?v=';
 
 export function useSongUrl(
     song: QueueSong | undefined,
@@ -11,10 +15,36 @@ export function useSongUrl(
 ): string | undefined {
     const prior = useRef(['', '']);
 
+    const isExternal = song?._serverType === ServerType.EXTERNAL;
+    const searchQuery =
+        song && isExternal ? `${song.artistName ?? ''} ${song.name ?? ''}`.trim() : '';
+
+    const youtubeSearch = useQuery({
+        ...youtubeQueries.search({ query: searchQuery }),
+        enabled: Boolean(song && isExternal && searchQuery),
+    });
+
+    const externalUrl = useMemo(() => {
+        if (!song || !isExternal) return undefined;
+        if (current && prior.current[0] === song._uniqueId && prior.current[1]) {
+            return prior.current[1];
+        }
+        const url = getYoutubeUrlFromSearchResults(youtubeSearch.data);
+        if (url) prior.current = [song._uniqueId, url];
+        return url;
+    }, [song, isExternal, current, youtubeSearch.data]);
+
     return useMemo(() => {
-        if (song?._serverId) {
-            // If we are the current track, we do not want a transcoding
-            // reconfiguration to force a restart.
+        if (!song) {
+            prior.current = ['', ''];
+            return undefined;
+        }
+
+        if (isExternal) {
+            return externalUrl;
+        }
+
+        if (song._serverId) {
             if (current && prior.current[0] === song._uniqueId) {
                 return prior.current[1];
             }
@@ -29,18 +59,16 @@ export function useSongUrl(
                 },
             });
 
-            // transcoding enabled; save the updated result
             prior.current = [song._uniqueId, url];
             return url;
         }
 
-        // no track; clear result
         prior.current = ['', ''];
         return undefined;
     }, [
-        song?._serverId,
-        song?._uniqueId,
-        song?.id,
+        song,
+        isExternal,
+        externalUrl,
         current,
         transcode.bitrate,
         transcode.format,
@@ -48,6 +76,16 @@ export function useSongUrl(
     ]);
 }
 
+function getYoutubeUrlFromSearchResults(
+    results: Array<{ type: string; videoId?: string }> | undefined,
+): string | undefined {
+    if (!results?.length) return undefined;
+    const first = results.find((r) => r.type === 'SONG' || r.type === 'VIDEO');
+    return first && 'videoId' in first && first.videoId
+        ? `${YOUTUBE_WATCH_BASE}${first.videoId}`
+        : undefined;
+}
+
 export const getSongUrl = (song: QueueSong, transcode: TranscodingConfig) => {
     return api.controller.getStreamUrl({
         apiClientProps: { serverId: song._serverId },