public CardPaymentResponse DoPayment(CardPaymentRequest request)
{
var paymentStatus = _paymentRepository.GetPaymentStatus(request.RequestId);
if (paymentStatus != null)
{
throw new RequestAlreadyProcessedException(paymentStatus.Status, paymentStatus.RequestId);
}
var currentPaymentStatus = new PaymentStatus()
{
RequestId = request.RequestId, Status = PaymentStatusEnum.Scheduled
};
_paymentRepository.AddPaymentStatus(currentPaymentStatus);
var cards = _cardRepository.GetAllCards();
if (!cards.Contains(request.GetCard()))
{
return new CardPaymentResponse {
TransactionStatus = TransactionStatus.Declined, Message = "Wrong card details", RequestId = request.RequestId
}
}
;
var bankAccounts = _bankAccountRepository.GetAllBankAccounts();
if (!bankAccounts.Contains(request.GetBankAccount()))
{
return new CardPaymentResponse {
TransactionStatus = TransactionStatus.Declined, Message = "Wrong bank account details", RequestId = request.RequestId
}
}
;
try
{
// here the bank performs the transaction
currentPaymentStatus.TransactionId = Guid.NewGuid().ToString();
// transaction ok
currentPaymentStatus.Status = PaymentStatusEnum.Completed;
_paymentRepository.UpdatePaymentStatus(currentPaymentStatus);
}
catch (Exception e)
{
currentPaymentStatus.Status = PaymentStatusEnum.Error;
_paymentRepository.UpdatePaymentStatus(currentPaymentStatus);
throw;
}
// return the status
return(new CardPaymentResponse {
TransactionStatus = TransactionStatus.Succeeded, RequestId = request.RequestId, TransactionId = currentPaymentStatus.TransactionId
});
}
}
}
public async Task <CreatePaymentResponse> CreatePayment(Payment payment)
{
// verify if the payment request exists already
var paymentStatus = await _paymentRepository.GetPaymentStatus(payment.RequestId);
if (paymentStatus != null)
{
return new CreatePaymentResponse {
ErrorCode = Consts.DUPLICATE_REQUEST_CODE
}
}
;
paymentStatus = new PaymentStatus()
{
PaymentId = Guid.NewGuid(), RequestId = payment.RequestId, Status = PaymentStatusEnum.Scheduled
};
await _paymentRepository.AddPaymentStatus(paymentStatus);
try
{
// get the merchant and check
var merchant = await _merchantRepository.GetMerchantById(payment.MerchantId);
if (merchant == null)
{
return new CreatePaymentResponse {
ErrorCode = Consts.MERCHANT_NOT_PRESENT_CODE
}
}
;
if (!merchant.IsValid)
{
return new CreatePaymentResponse {
ErrorCode = Consts.MERCHANT_INVALID_CODE
}
}
;
// Prepare the full payment data to send to the Event Broker
var paymentRequestMessage = createPaymentRequestMessage(payment, merchant);
paymentRequestMessage.PaymentRequestId = paymentStatus.PaymentId;
var encryptedMessage = new EncryptedMessage(EventBrokerConsts.PAYMENT_REQUEST_EXCHANGE_NAME, EventBrokerConsts.PAYMENT_REQUEST_ROUTINGKEY, "PaymentGateway.Api", paymentRequestMessage, _cipherService);
_eventBrokerPublisher.PublishEncryptedMessage(encryptedMessage);
// set the payment status
paymentStatus.Status = PaymentStatusEnum.Completed;
await _paymentRepository.UpdatePaymentStatus(paymentStatus);
// create the response
return(new CreatePaymentResponse()
{
RequestId = payment.RequestId, PaymentRequestId = paymentStatus.PaymentId
});
}
catch (Exception e)
{
var errorReferenceGuid = Guid.NewGuid();
_logger.LogError($"ReferenceId:{errorReferenceGuid}, Error Message:{e.Message}");
paymentStatus.Status = PaymentStatusEnum.Error;
await _paymentRepository.UpdatePaymentStatus(paymentStatus);
return(new CreatePaymentResponse {
ErrorCode = Consts.UNEXPECTED_ERROR_CODE, ErrorReferencegGuid = errorReferenceGuid
});
}
}
