public ProcessOrderResponseData ProcessOrder(ProcessOrderRequestData orderData)
{
CreateOrderDraftData(orderData);
var receipt = paymentGatewayService.ProcessPaymentData(orderData);
var response = CreateDefaultResponsedata(orderData.OrderNumber, orderData.UserId);
if (receipt != null)
{
response.PaymentAccepted = true;
response.ReceiptData = receipt;
UpdateOrderDraftData(receipt);
}
else
{
response.PaymentAccepted = false;
response.ErrorMessage =
$"Payment gateway {orderData.PaymentGateway} was unable to process payment for order number {orderData.OrderNumber}. " +
$"For detailed information please check error logs";
}
return(response);
}
private void SetupProcessPaymentData(ProcessOrderRequestData orderData)
{
var receiptData = new ReceiptDataBuilder().Build();
receiptData.AmountPaid = orderData.PayableAmount;
SetupMock(orderData, receiptData);
}
private ReceiptData SendGppPayment(ProcessOrderRequestData orderData)
{
CreatePaymentDraftData(orderData.OrderNumber, orderData.PayableAmount);
//Do some other payment gateway specific actions here
var url = ConfigurationManager.AppSettings["GppGatewayUrl"];
var result = GetPaymentGatewayResponse <ProcessOrderRequestData, PaymentGatewayResponseData>(orderData, url);
if (result != null)
{
var receiptData = new ReceiptData
{
ReceiptNumber = result.ReceiptNumber,
PaymentNumber = result.PaymentNumber,
AmountPaid = result.AmountPaid,
DateProcessed = result.DateProcessed
};
UpdatePaymentDraftData(receiptData);
return(receiptData);
}
return(null);
}
public OrderRequestDataBuilder()
{
orderData = new ProcessOrderRequestData
{
OrderNumber = "ON285345",
UserId = "ID3728AI",
PayableAmount = 100M,
PaymentGateway = PaymentGatewayEnum.GoldenPayPayment,
OptionalDescription = "Order weight = 3.14"
};
}
public HttpResponseMessage ProcessOrder([FromBody] ProcessOrderRequestData orderData)
{
try
{
var service = serviceLocator.GetInstance <IProcessOrderOperation>();
var model = service.ProcessOrder(orderData);
return(Request.CreateResponse(HttpStatusCode.OK, model));
}
catch (Exception e)
{
Logger.Error($"Method: ProcessOrderOperation, Exception: {e.Message}");
return(Request.CreateResponse(HttpStatusCode.InternalServerError, e.Message));
}
}
public ReceiptData ProcessPaymentData(ProcessOrderRequestData orderData)
{
switch (orderData.PaymentGateway)
{
case PaymentGatewayEnum.BankTransferPayment:
return(SendBtpPayment(orderData));
case PaymentGatewayEnum.GoldenPayPayment:
return(SendGppPayment(orderData));
case PaymentGatewayEnum.PayPalPayment:
return(SendPppPayment(orderData));
default:
throw new InvalidOperationException($"Payment gateway type {orderData.PaymentGateway} is invalid!");
}
}
private void CreateOrderDraftData(ProcessOrderRequestData orderData)
{
//Added gateway validation, basically only for tests, because this case is handled earlier by FluentValidation
var isGatewayIdValid =
new List <PaymentGatewayEnum>
{
PaymentGatewayEnum.GoldenPayPayment,
PaymentGatewayEnum.BankTransferPayment,
PaymentGatewayEnum.PayPalPayment
}
.Contains(orderData.PaymentGateway);
if (!isGatewayIdValid)
{
throw new InvalidOperationException($"Payment gateway type {orderData.PaymentGateway} is invalid!");
}
//Do some business logic here before sending to payment gateway,
//for example, save order data as a draft to database with payment status "Unpaid", etc
}
private void SetupMock(ProcessOrderRequestData orderData, ReceiptData receiptData)
{
paymentGatewayServiceMock
.Setup(s => s.ProcessPaymentData(orderData))
.Returns(receiptData);
}