public int deleteCart(CartUpdateDTO cartUpdate)
{
var cart = Session["cart"];//get key cart
if (cart == null)
{
List <CartItemDTO> listCart = new List <CartItemDTO>();
string jsonCart = JsonConvert.SerializeObject(listCart);
Session["cart"] = jsonCart;
}
else
{
List <CartItemDTO> listCart = JsonConvert.DeserializeObject <List <CartItemDTO> >(cart.ToString());
for (int i = 0; i < listCart.Count; i++)
{
if (listCart[i].MaSanPham == cartUpdate.MaSanPham)
{
listCart.Remove(listCart[i]);
break;
}
}
string jsonCart = JsonConvert.SerializeObject(listCart);
Session["cart"] = jsonCart;
}
return(1);
}
public int updateCart(CartUpdateDTO cartUpdate)
{
int tongtien = 0;
var cart = Session["cart"];//get key cart
if (cart == null)
{
List <CartItemDTO> listCart = new List <CartItemDTO>();
string jsonCart = JsonConvert.SerializeObject(listCart);
Session["cart"] = jsonCart;
}
else
{
List <CartItemDTO> listCart = JsonConvert.DeserializeObject <List <CartItemDTO> >(cart.ToString());
for (int i = 0; i < listCart.Count; i++)
{
if (listCart[i].MaSanPham == cartUpdate.MaSanPham)
{
listCart[i].SoLuong = cartUpdate.SoLuong;
break;
}
}
foreach (var item in listCart)
{
tongtien += (Convert.ToInt32(item.Gia) * Convert.ToInt32(item.SoLuong));
}
string jsonCart = JsonConvert.SerializeObject(listCart);
Session["cart"] = jsonCart;
}
return(tongtien);
}
public async Task <IActionResult> UpdateCart(int CartId, CartUpdateDTO cartUpdateDTO)
{
try
{
//check if cart id matched id requested
if (cartUpdateDTO.CartId != null)
{
if (CartId != cartUpdateDTO.CartId)
{
return(BadRequest(new { ApiProblem = "Entity Id does not match requested Id." }));
}
}
var cartIdExists = _context.Carts.Any(c => c.CartId == cartUpdateDTO.CartId);
var cartNameExists = _context.Carts.Any(c => c.CartName == cartUpdateDTO.CartName);
var tagAddressExists = _context.Carts.Any(c => c.TagAddress == cartUpdateDTO.TagAddress);
//check if cartid does not exist
if (!cartIdExists && cartUpdateDTO.CartId != null)
{
//add error message
ModelState.AddModelError("CartId", "No cart found with given cart id.");
}
//check if CartName already exists
if (cartNameExists)
{
//check if the cart is another cart
var theCart = _context.Carts.Where(c => c.CartName == cartUpdateDTO.CartName).FirstOrDefault();
if (theCart.CartId != cartUpdateDTO.CartId)
{
//add error message
ModelState.AddModelError("CartName", "CartName already exists.");
}
}
//check if TagAddress already exists
if (tagAddressExists)
{
//check if the cart is another cart
var theCart = _context.Carts.Where(c => c.TagAddress == cartUpdateDTO.TagAddress).FirstOrDefault();
if (theCart.CartId != cartUpdateDTO.CartId)
{
//add error message
ModelState.AddModelError("TagAddress", "TagAddress already exists.");
}
}
//if model is not valid return error messages
if (!ModelState.IsValid)
{
return(BadRequest(ModelState.ToDictionary(x => x.Key, x => x.Value.Errors.Select(e => e.ErrorMessage).ToArray())));
}
//find cart
var cart = await _context.Carts.FindAsync(CartId);
//if site not found return error
if (cart == null)
{
return(NotFound());
}
//update cart
cart.CartName = cartUpdateDTO.CartName;
cart.TagAddress = cartUpdateDTO.TagAddress;
//put cart
try
{
await _context.SaveChangesAsync();
}
catch (DbUpdateConcurrencyException) when(!CartExists(CartId))
{
return(NotFound());
}
return(NoContent());
}
catch (NullReferenceException e)
{
//if exception is caught write to console and return error message
Console.WriteLine("{0} Exception caught.", e);
return(BadRequest(new { ApiProblem = "Invalid JSON format sent." }));
}
}
