Add service platform foundation

app/api/cars.py

@@ -7,17 +7,27 @@ from app.db.session import get_session
 from app.models.car import Car
 from app.models.user import User
 from app.schemas.car import CarCreate, CarRead, CarUpdate
+from app.services.vehicle_identity import normalize_license_plate, validate_vin
 
 router = APIRouter(prefix="/cars", tags=["cars"])
 
 
+def apply_identity_fields(data: dict) -> dict:
+    if "plate_number" in data:
+        data["license_plate_display"] = data["plate_number"]
+        data["license_plate_normalized"] = normalize_license_plate(data["plate_number"])
+    if "vin" in data:
+        data["vin_normalized"] = validate_vin(data["vin"])
+    return data
+
+
 @router.post("", response_model=CarRead, status_code=status.HTTP_201_CREATED)
 async def create_car(
     payload: CarCreate,
     session: AsyncSession = Depends(get_session),
     current_user: User = Depends(get_current_telegram_user),
 ) -> Car:
-    data = payload.model_dump(exclude={"owner_id"})
+    data = apply_identity_fields(payload.model_dump(exclude={"owner_id"}))
     car = Car(**data, owner_id=current_user.id)
     session.add(car)
     await session.commit()
@@ -65,7 +75,7 @@ async def update_car(
         raise HTTPException(status_code=404, detail="Car not found")
     if car.owner_id != current_user.id:
         raise HTTPException(status_code=403, detail="Forbidden")
-    for field, value in payload.model_dump(exclude_unset=True).items():
+    for field, value in apply_identity_fields(payload.model_dump(exclude_unset=True)).items():
         setattr(car, field, value)
     await session.commit()
     await session.refresh(car)