public async Task <ClientResponse <PaymentResult> > ProcessPaymentAsync(PaymentRequest paymentRequest)
{
if (paymentRequest == null)
{
throw new ArgumentNullException(nameof(paymentRequest));
}
var validationResult = _paymentValidator.Validate(paymentRequest);
if (!validationResult.IsValid)
{
return(ClientResponse <PaymentResult> .FromError(validationResult.ToString(), new PaymentResult(paymentRequest.PaymentRequestId)));
}
var payment = paymentRequest.ToPayment();
try
{
await UpdatePaymentAsync(payment);
var bankPaymentResult = await _bankPaymentClient.ProcessPaymentAsync(paymentRequest);
payment.PaymentStatus = bankPaymentResult.Status ? PaymentStatus.Succeed : PaymentStatus.Declined;
payment.PaymentReferenceId = bankPaymentResult.PaymentReferenceId;
await UpdatePaymentAsync(payment);
var paymentResult = new PaymentResult(payment.PaymentRequestId, payment.PaymentReferenceId);
return(bankPaymentResult.Status
? ClientResponse <PaymentResult> .FromPayload(paymentResult)
: ClientResponse <PaymentResult> .FromError("Payment was unsuccessful.The bank returns unsuccessful response.", paymentResult));
}
catch (PaymentStoreException e)
{
_logger.LogError("Error in saving payment", e);
// TODO: Can be handled in different strategies. E.g Revert the payment with bank or retry saving.
return(ClientResponse <PaymentResult> .FromError("Payment was unsuccessful.", new PaymentResult(payment.PaymentRequestId, payment.PaymentReferenceId)));
}
catch (Exception e)
{
_logger.LogError("Error in process payment", e);
return(ClientResponse <PaymentResult> .FromError("Payment was unsuccessful.", new PaymentResult(payment.PaymentRequestId)));
}
}