public ShoppingCartProductService(IShoppingCartProductRepository shoppingCartProductRepository, IShoppingCartRepository shoppingCartRepository, IUserService userService)
{
this.shoppingCartProductRepository = shoppingCartProductRepository;
this.shoppingCartRepository = shoppingCartRepository;
this.userService = userService;
int userId = userService.GetUserId();
ShoppingCart dbShoppingCart = shoppingCartRepository.FindShoppingCartByUserId(userId);
this.shoppingCartId = dbShoppingCart.Id;
}
