public void AddItemToShoppingCart(int shoppingCartId, int productId, int qty)
{
ShoppingCart shoppingCart = _context.ShoppingCarts.SingleOrDefault(s => s.ShoppingCartId == shoppingCartId);
if (shoppingCart == null)
{
throw new NullReferenceException();
}
ShoppingItemDetails shoppingItemDetails = shoppingCart.ShoppingItems?.SingleOrDefault(s => s.ProductId == productId);
if (shoppingItemDetails == null)
{
shoppingItemDetails = new ShoppingItemDetails()
{
ProductId = productId,
Qty = qty
};
shoppingCart.ShoppingItems.Add(shoppingItemDetails);
}
else
{
shoppingItemDetails.Qty += qty;
}
_context.SaveChanges();
}
public void RemoveItemFromShoppingCart(int shoppingCartId, int productId)
{
ShoppingCart shoppingCart = _context.ShoppingCarts.SingleOrDefault(s => s.ShoppingCartId == shoppingCartId);
if (shoppingCart == null)
{
throw new NullReferenceException();
}
ShoppingItemDetails shoppingItemDetails = shoppingCart.ShoppingItems?.SingleOrDefault(s => s.ProductId == productId);
if (shoppingItemDetails != null)
{
shoppingCart.ShoppingItems.Remove(shoppingItemDetails);
_context.SaveChanges();
}
}
