public async Task <ShoppingCartItems> AddItemToCart(ShoppingCartAddItemDto dto, int userId)
{
try
{
var cartList = await _shoppingCartService.GetListWithShoppingCartItems_ShoppingCarts(x => x.User_Id == userId && x.Status && !x.Is_Deleted);
var cart = cartList.FirstOrDefault();
var product = await _productService.Get(x => x.Id == dto.productId);
if (product.InStock < dto.quantity)
{
throw new Exception("no stock");
}
else
{
if (cart != null)
{
var cartItems = cart.ShoppingCartItems;
if (cartItems != null && cartItems.Any(x => x.Product_Id == dto.productId))
{
var cartProduct = await _shoppingCartItemService.Get(x => x.Product_Id == dto.productId && x.ShoppingCart_Id == cart.Id);
cartProduct.Quantity += dto.quantity;
if (product.InStock < cartProduct.Quantity)
{
throw new Exception("no stock");
}
return(await _shoppingCartItemService.Update(cartProduct));
}
else
{
var itemCartItem = new ShoppingCartItems()
{
Product_Id = dto.productId,
Quantity = dto.quantity,
ShoppingCart_Id = cart.Id,
};
return(await _shoppingCartItemService.Add(itemCartItem));
}
}
else
{
var itemCart = new ShoppingCarts()
{
User_Id = userId,
Status = true,
Is_Deleted = false,
};
var newCart = await _shoppingCartService.Add(itemCart);
var itemCartItem = new ShoppingCartItems()
{
Product_Id = dto.productId,
Quantity = dto.quantity,
ShoppingCart_Id = newCart.Id,
};
return(await _shoppingCartItemService.Add(itemCartItem));
}
}
}
catch (Exception)
{
throw;
}
}