/// <summary>
/// Update based upon user
/// </summary>
/// <returns></returns>
public async Task <IActionResult> OnPostUpdate()
{
Cart = await _cart.GetCart(User.Identity.Name);
Product = await _product.GetProduct(ProductId);
CartItem = await _cartItem.GetCartItem(ProductId, CartId);
if (CartItem == null)
{
IsAvailable = true;
return(Page());
}
if (Quantity <= Product.Quantity && Quantity > 0)
{
await _cartItem.UpdateCartQuantityAndPrice(CartItem.Product, CartItem.Cart, Quantity);
return(new RedirectToPageResult("/Categories/Index"));
}
if (Quantity > Product.Quantity || Quantity <= 0)
{
IsAvailable = true;
return(Page());
}
return(Page());
}