feat: Implement background extraction processor with concurrency control

- Added `ExtractionProcessor` class to handle extraction queue processing in the background.
- Implemented methods for starting, stopping, and queuing extractions with concurrency limits.
- Integrated logging for monitoring the processor's status and actions.
- Created tests for the extraction processor to ensure functionality and error handling.

test: Add unit tests for extraction API endpoints

- Created tests for successful extraction creation, authentication checks, and processor status retrieval.
- Ensured proper responses for authenticated and unauthenticated requests.

test: Implement unit tests for extraction repository

- Added tests for creating, retrieving, and updating extractions in the repository.
- Mocked database interactions to validate repository behavior without actual database access.

test: Add comprehensive tests for extraction service

- Developed tests for extraction creation, service detection, and sound record creation.
- Included tests for handling duplicate extractions and invalid URLs.

test: Add unit tests for extraction background processor

- Created tests for the `ExtractionProcessor` class to validate its behavior under various conditions.
- Ensured proper handling of extraction queuing, processing, and completion callbacks.

fix: Update OAuth service tests to use AsyncMock

- Modified OAuth provider tests to use `AsyncMock` for mocking asynchronous HTTP requests.

app/api/v1/sounds.py

@@ -8,6 +8,8 @@ from sqlmodel.ext.asyncio.session import AsyncSession
 from app.core.database import get_db
 from app.core.dependencies import get_current_active_user_flexible
 from app.models.user import User
+from app.services.extraction import ExtractionInfo, ExtractionService
+from app.services.extraction_processor import extraction_processor
 from app.services.sound_normalizer import NormalizationResults, SoundNormalizerService
 from app.services.sound_scanner import ScanResults, SoundScannerService
 
@@ -28,6 +30,13 @@ async def get_sound_normalizer_service(
     return SoundNormalizerService(session)
 
 
+async def get_extraction_service(
+    session: Annotated[AsyncSession, Depends(get_db)],
+) -> ExtractionService:
+    """Get the extraction service."""
+    return ExtractionService(session)
+
+
 # SCAN
 @router.post("/scan")
 async def scan_sounds(
@@ -233,3 +242,110 @@ async def normalize_sound_by_id(
             status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
             detail=f"Failed to normalize sound: {e!s}",
         ) from e
+
+
+# EXTRACT
+@router.post("/extract")
+async def create_extraction(
+    url: str,
+    current_user: Annotated[User, Depends(get_current_active_user_flexible)],
+    extraction_service: Annotated[ExtractionService, Depends(get_extraction_service)],
+) -> dict[str, ExtractionInfo | str]:
+    """Create a new extraction job for a URL."""
+    try:
+        if current_user.id is None:
+            raise HTTPException(
+                status_code=status.HTTP_401_UNAUTHORIZED,
+                detail="User ID not available",
+            )
+
+        extraction_info = await extraction_service.create_extraction(
+            url, current_user.id
+        )
+
+        # Queue the extraction for background processing
+        await extraction_processor.queue_extraction(extraction_info["id"])
+
+        return {
+            "message": "Extraction queued successfully",
+            "extraction": extraction_info,
+        }
+
+    except ValueError as e:
+        raise HTTPException(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail=str(e),
+        ) from e
+    except Exception as e:
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=f"Failed to create extraction: {e!s}",
+        ) from e
+
+
+@router.get("/extract/status")
+async def get_extraction_processor_status(
+    current_user: Annotated[User, Depends(get_current_active_user_flexible)],
+) -> dict:
+    """Get the status of the extraction processor."""
+    # Only allow admins to see processor status
+    if current_user.role not in ["admin", "superadmin"]:
+        raise HTTPException(
+            status_code=status.HTTP_403_FORBIDDEN,
+            detail="Only administrators can view processor status",
+        )
+
+    return extraction_processor.get_status()
+
+
+@router.get("/extract/{extraction_id}")
+async def get_extraction(
+    extraction_id: int,
+    current_user: Annotated[User, Depends(get_current_active_user_flexible)],
+    extraction_service: Annotated[ExtractionService, Depends(get_extraction_service)],
+) -> ExtractionInfo:
+    """Get extraction information by ID."""
+    try:
+        extraction_info = await extraction_service.get_extraction_by_id(extraction_id)
+
+        if not extraction_info:
+            raise HTTPException(
+                status_code=status.HTTP_404_NOT_FOUND,
+                detail=f"Extraction {extraction_id} not found",
+            )
+
+        return extraction_info
+
+    except HTTPException:
+        raise
+    except Exception as e:
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=f"Failed to get extraction: {e!s}",
+        ) from e
+
+
+@router.get("/extract")
+async def get_user_extractions(
+    current_user: Annotated[User, Depends(get_current_active_user_flexible)],
+    extraction_service: Annotated[ExtractionService, Depends(get_extraction_service)],
+) -> dict[str, list[ExtractionInfo]]:
+    """Get all extractions for the current user."""
+    try:
+        if current_user.id is None:
+            raise HTTPException(
+                status_code=status.HTTP_401_UNAUTHORIZED,
+                detail="User ID not available",
+            )
+
+        extractions = await extraction_service.get_user_extractions(current_user.id)
+
+        return {
+            "extractions": extractions,
+        }
+
+    except Exception as e:
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=f"Failed to get extractions: {e!s}",
+        ) from e