Refactor sound and extraction services to include user and timestamp fields

- Updated ExtractionInfo to include user_id, created_at, and updated_at fields.
- Modified ExtractionService to return user and timestamp information in extraction responses.
- Enhanced sound serialization in PlayerState to include extraction URL if available.
- Adjusted PlaylistRepository to load sound extractions when retrieving playlist sounds.
- Added tests for new fields in extraction and sound endpoints, ensuring proper response structure.
- Created new test file endpoints for sound downloads and thumbnail retrievals, including success and error cases.
- Refactored various test cases for consistency and clarity, ensuring proper mocking and assertions.

app/services/player.py

@@ -87,6 +87,14 @@ class PlayerState:
         """Serialize a sound object for JSON serialization."""
         if not sound:
             return None
+
+        # Get extraction URL if sound is linked to an extraction
+        extract_url = None
+        if hasattr(sound, "extractions") and sound.extractions:
+            # Get the first extraction (there should only be one per sound)
+            extraction = sound.extractions[0]
+            extract_url = extraction.url
+
         return {
             "id": sound.id,
             "name": sound.name,
@@ -96,6 +104,7 @@ class PlayerState:
             "type": sound.type,
             "thumbnail": sound.thumbnail,
             "play_count": sound.play_count,
+            "extract_url": extract_url,
         }
 
 
@@ -585,7 +594,8 @@ class PlayerService:
 
                 # Check if track finished
                 player_state = self._player.get_state()
-                if hasattr(vlc, "State") and player_state == vlc.State.Ended:
+                vlc_state_ended = 6  # vlc.State.Ended value
+                if player_state == vlc_state_ended:
                     # Track finished, handle auto-advance
                     self._schedule_async_task(self._handle_track_finished())