add: database cars, enpoints

crud.py

@@ -0,0 +1,74 @@
+from sqlalchemy.orm import Session
+from models import Car, EngineType, HybridType, PowerRatio
+import schemas
+from typing import List, Optional
+
+def get_car(db: Session, car_id: int) -> Optional[Car]:
+    return db.query(Car).filter(Car.id == car_id).first()
+
+def get_cars(db: Session, skip: int = 0, limit: int = 100) -> List[Car]:
+    return db.query(Car).offset(skip).limit(limit).all()
+
+def get_cars_count(db: Session) -> int:
+    return db.query(Car).count()
+
+def create_car(db: Session, car: schemas.CarCreate) -> Car:
+    # Преобразование из Pydantic enum в SQLAlchemy enum
+    engine_type = EngineType(car.engine_type.value)
+    hybrid_type = HybridType(car.hybrid_type.value)
+    power_ratio = PowerRatio(car.power_ratio.value)
+    
+    db_car = Car(
+        image=car.image,
+        name=car.name,
+        price=car.price,
+        base_price=car.base_price,
+        country_of_origin=car.country_of_origin,
+        year=car.year,
+        drive_type=car.drive_type,
+        mileage=car.mileage,
+        engine_capacity=car.engine_capacity,
+        engine_power=car.engine_power,
+        engine_type=engine_type,
+        electric_motor_power=car.electric_motor_power,
+        hybrid_type=hybrid_type,
+        power_ratio=power_ratio,
+    )
+    db.add(db_car)
+    db.commit()
+    db.refresh(db_car)
+    return db_car
+
+def update_car(db: Session, car_id: int, car_update: schemas.CarUpdate) -> Optional[Car]:
+    db_car = get_car(db, car_id)
+    if not db_car:
+        return None
+
+    update_data = car_update.model_dump(exclude_unset=True)
+    
+    # Обработка enum полей
+    if "engine_type" in update_data and update_data["engine_type"] is not None:
+        update_data["engine_type"] = EngineType(update_data["engine_type"])
+    
+    if "hybrid_type" in update_data and update_data["hybrid_type"] is not None:
+        update_data["hybrid_type"] = HybridType(update_data["hybrid_type"])
+    
+    if "power_ratio" in update_data and update_data["power_ratio"] is not None:
+        update_data["power_ratio"] = PowerRatio(update_data["power_ratio"])
+    
+    # Обновление полей
+    for key, value in update_data.items():
+        setattr(db_car, key, value)
+    
+    db.commit()
+    db.refresh(db_car)
+    return db_car
+
+def delete_car(db: Session, car_id: int) -> bool:
+    db_car = get_car(db, car_id)
+    if not db_car:
+        return False
+    
+    db.delete(db_car)
+    db.commit()
+    return True