public async Task <IActionResult> PostPayment([FromBody] PostPaymentRequest request)
{
// todo: check if customer exists in database
var creditCards = await DbContext.GetCreditCardByCardHolderName(request.CardHolderName).ToListAsync();
var creditCard = default(CreditCard);
if (creditCards.Count > 1)
{
creditCard = creditCards.FirstOrDefault(item => item.CardNumber == request.CardNumber);
if (creditCard == null)
{
return(BadRequest(string.Format("There isn't record for credit card with last 4 digits: {0}.", request.CardNumber)));
}
}
else if (creditCards.Count == 1)
{
creditCard = creditCards.First();
}
else
{
return(BadRequest(string.Format("There isn't record for credit card with last 4 digits: {0}.", request.CardNumber)));
}
// todo: check credit card info in database
if (!creditCard.IsValid(request))
{
return(BadRequest(string.Format("There is invalid data for credit card in this transaction.")));
}
// todo: check if customer has available credit (limit)
if (!creditCard.HasFounds(request))
{
return(BadRequest(string.Format("There isn't founds to approve this transaction.")));
}
var txn = new PaymentTransaction
{
PaymentTransactionID = Guid.NewGuid(),
CreditCardID = creditCard.CreditCardID,
ConfirmationID = Guid.NewGuid(),
Amount = request.Amount,
PaymentDateTime = DateTime.Now
};
DbContext.PaymentTransactions.Add(txn);
creditCard.AvailableFounds -= request.Amount;
await DbContext.SaveChangesAsync();
return(Ok(new { txn.ConfirmationID, creditCard.Last4Digits }));
}
public async Task <IActionResult> PostPaymentAsync([FromBody] PostPaymentRequest request)
{
Logger?.LogDebug("'{0}' has been invoked", nameof(PostPaymentAsync));
var creditCards = await DbContext.GetCreditCardByCardHolderName(request.CardHolderName).ToListAsync();
var creditCard = default(CreditCard);
var last4Digits = request.CardNumber.Substring(request.CardNumber.Length - 4);
if (creditCards.Count > 1)
{
creditCard = creditCards.FirstOrDefault(item => item.CardNumber == request.CardNumber);
}
else if (creditCards.Count == 1)
{
creditCard = creditCards.First();
}
if (creditCard == null)
{
return(BadRequest(string.Format("There is not record for credit card with last 4 digits: {0}.", last4Digits)));
}
/* Check credit card information */
if (!creditCard.IsValid(request))
{
return(BadRequest(string.Format("Invalid information for card payment.")));
}
/* Check if customer has available credit (limit) */
if (!creditCard.HasFounds(request))
{
return(BadRequest(string.Format("There are no founds to approve the payment.")));
}
using (var txn = await DbContext.Database.BeginTransactionAsync())
{
try
{
var paymentTxn = new PaymentTransaction
{
PaymentTransactionID = Guid.NewGuid(),
CreditCardID = creditCard.CreditCardID,
ConfirmationID = Guid.NewGuid(),
Amount = request.Amount,
PaymentDateTime = DateTime.Now
};
DbContext.PaymentTransactions.Add(paymentTxn);
creditCard.AvailableFounds -= request.Amount;
await DbContext.SaveChangesAsync();
txn.Commit();
Logger?.LogInformation("The payment for card with last 4 digits: '{0}' was successfully. Confirmation #: {1}", last4Digits, paymentTxn.ConfirmationID);
var response = new PaymentResponse
{
ConfirmationID = paymentTxn.ConfirmationID,
PaymentDateTime = paymentTxn.PaymentDateTime,
Last4Digits = creditCard.Last4Digits
};
return(Ok(response));
}
catch (Exception ex)
{
Logger?.LogCritical("There was an error on '{0}': {1}", nameof(PostPaymentAsync), ex);
txn.Rollback();
return(new ObjectResult(ex.Message)
{
StatusCode = (int)HttpStatusCode.InternalServerError
});
}
}
}
