feat: Enhance user metrics retrieval by integrating Extraction model and updating related queries

app/repositories/user.py

@@ -17,6 +17,7 @@ from app.models.credit_transaction import CreditTransaction
 from app.models.playlist import Playlist
 from app.models.sound import Sound
 from app.models.tts import TTS
+from app.models.extraction import Extraction
 from app.repositories.base import BaseRepository
 
 logger = get_logger(__name__)
@@ -262,19 +263,19 @@ class UserRepository(BaseRepository[User]):
                     query = query.where(CreditTransaction.created_at >= date_filter)
 
             elif metric_type == "tracks_added":
-                # Get users with most EXT sounds added
+                # Get users with most EXT sounds added (via extractions)
                 query = (
                     select(
                         User.id,
                         User.name,
-                        func.count(Sound.id).label("count")
+                        func.count(Extraction.id).label("count")
                     )
-                    .join(Sound, User.id == Sound.user_id)
-                    .where(Sound.type == "EXT")
+                    .join(Extraction, User.id == Extraction.user_id)
+                    .where(Extraction.sound_id.is_not(None))  # Only count successful extractions
                     .group_by(User.id, User.name)
                 )
                 if date_filter:
-                    query = query.where(Sound.created_at >= date_filter)
+                    query = query.where(Extraction.created_at >= date_filter)
 
             elif metric_type == "tts_added":
                 # Get users with most TTS sounds added