Add inline YouTube player on recommendation cards, fetch real video IDs via ytmusicapi

backend/app/services/recommender.py

@@ -237,17 +237,44 @@ Return ONLY the JSON array, no other text."""
     except json.JSONDecodeError:
         return [], remaining
 
+    # Look up YouTube video IDs for embeddable players
+    import asyncio
+    from app.services.youtube_music import search_track as yt_search
+
+    def get_youtube_links(tracks: list[dict]) -> list[dict]:
+        """Get YouTube video IDs for a batch of tracks (sync, runs in thread)."""
+        results = []
+        for t in tracks:
+            artist = t.get("artist", "")
+            title = t.get("title", "")
+            try:
+                yt_results = yt_search(f"{artist} {title}")
+                if yt_results and yt_results[0].get("youtube_id"):
+                    yt = yt_results[0]
+                    results.append({
+                        "youtube_url": f"https://music.youtube.com/watch?v={yt['youtube_id']}",
+                        "image_url": yt.get("image_url"),
+                    })
+                    continue
+            except Exception:
+                pass
+            results.append({
+                "youtube_url": f"https://music.youtube.com/search?q={quote_plus(f'{artist} {title}')}",
+                "image_url": None,
+            })
+        return results
+
+    # Get YouTube data BEFORE any DB operations (avoids greenlet conflict)
+    tracks_to_lookup = [{"artist": r.get("artist", ""), "title": r.get("title", "")} for r in recs_data[:count]]
+    yt_data = await asyncio.to_thread(get_youtube_links, tracks_to_lookup)
+
     # Save to DB with YouTube Music links
     recommendations = []
-    for rec in recs_data:
-        if len(recommendations) >= count:
-            break
-
+    for i, rec in enumerate(recs_data[:count]):
         artist = rec.get("artist", "Unknown")
         title = rec.get("title", "Unknown")
         reason = rec.get("reason", "")
-
-        youtube_url = f"https://music.youtube.com/search?q={quote_plus(f'{artist} {title}')}"
+        yt = yt_data[i] if i < len(yt_data) else {}
 
         r = Recommendation(
             user_id=user.id,
@@ -255,10 +282,11 @@ Return ONLY the JSON array, no other text."""
             title=title,
             artist=artist,
             album=rec.get("album"),
+            image_url=yt.get("image_url"),
             reason=reason,
             score=rec.get("score"),
             query=query,
-            youtube_url=youtube_url,
+            youtube_url=yt.get("youtube_url", f"https://music.youtube.com/search?q={quote_plus(f'{artist} {title}')}"),
         )
         db.add(r)
         recommendations.append(r)