//Following 2 functions - DoPayment and MakePayment do the same functionality - in 2 different styles
public async Task <Payment> DoPayment(PaymentRequest paymentRequest)
{
//style -> RETURN errors as exceptions
//validate the accounts
//these calls themselves throw exceptions if the accounts are not valid
await _bankClient.ValidateAccount(paymentRequest.payee.accountNumber, paymentRequest.payee.ifscCode);
await _bankClient.ValidateAccount(paymentRequest.beneficiary.accountNumber, paymentRequest.beneficiary.ifscCode);
//a hard coded sample check representing a biz logic
if (paymentRequest.amount > 1000000)
{
throw new ProcessingException("Amount exceeded permitted limit", null, paymentRequest);
}
//create payment entry with initial status "InProgress"
Payment payment = new Payment(paymentRequest.beneficiary.name, paymentRequest.beneficiary.accountNumber, paymentRequest.beneficiary.ifscCode,
paymentRequest.payee.name, paymentRequest.payee.accountNumber, paymentRequest.payee.ifscCode, paymentRequest.amount, PaymentStatus.InProgress);
_context.Payments.Add(payment);
await _context.SaveChangesAsync();
//TODO - do the transaction {
//1. debit payee
//2. credit beneficiary
//3. update status in database
payment._status = PaymentStatus.Completed;
_context.Payments.Update(payment);
await _context.SaveChangesAsync();
//END TODO - do the transaction
//}
return(payment);
}