public async Task <IActionResult> PostCustomerCartDetail([FromBody] DTOs.CustomerCartDetail detail)
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }

            var productInCart = _context.CustomerCartDetail.Find(detail.CustomerCartId, detail.ProductId);

            if (productInCart != null)
            {
                productInCart.Quantity += detail.Quantity;

                _context.Update(productInCart);
            }
            else
            {
                var customerCartDetail = new CustomerCartDetail
                {
                    ProductId      = detail.ProductId,
                    CustomerCartId = detail.CustomerCartId,
                    Price          = detail.Price,
                    DisplayPrice   = detail.DisplayPrice,
                    Quantity       = detail.Quantity
                };

                _context.CustomerCartDetail.Add(customerCartDetail);
            }

            return(await _context.SaveChangesAsync() > 0 ? StatusCode(200) : StatusCode(409));
        }
        public async Task <IActionResult> PutCustomerCartDetail([FromRoute] string id,
                                                                [FromBody] CustomerCartDetail customerCartDetail)
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }

            if (id != customerCartDetail.CustomerCartId)
            {
                return(BadRequest());
            }

            _context.Entry(customerCartDetail).State = EntityState.Modified;

            try
            {
                await _context.SaveChangesAsync();
            }
            catch (DbUpdateConcurrencyException)
            {
                if (!CustomerCartDetailExists(id))
                {
                    return(NotFound());
                }
                else
                {
                    throw;
                }
            }

            return(NoContent());
        }