public ActionResult Checkout(int orderId, string creditCardToken)
        {
            if (!Startup.Orders.Any(o => o.OrderId == orderId))
            {
                return(Conflict(new { message = "Order not found" }));
            }

            var order = Startup.Orders.Where(o => o.OrderId == orderId).SingleOrDefault();

            var paymentDTO = new PaymentDTO()
            {
                UserId          = order.User.Id,
                CreditCardToken = creditCardToken,
                Value           = order.Basket.Total
            };
            var paymentResponse = creditCardService.Pay(paymentDTO);

            if (paymentResponse.StatusCode != HttpStatusCode.OK)
            {
                return(Conflict(paymentResponse.ErrorMessage));
            }

            var transacao = new Transacao()
            {
                Data      = DateTime.Now,
                PedidoId  = order.OrderId,
                UsuarioId = order.User.Id,
                Valor     = (decimal)(order.Basket.Total)
            };

            var transaction = transactionLogService.Log(transacao);

            if (transaction.StatusCode != HttpStatusCode.OK)
            {
                return(Conflict(transaction.ErrorMessage));
            }

            order.OrderStatus = OrderStatus.ReadyForShip;

            return(Ok());
        }