public async Task <PaymentResponse> ChoosePaymentHandler(Payment_Dto payment_dto)
{
var pendingState = await GetPaymentStatusByStatus((int)PaymentStatusEnum.PENDING);
if (pendingState is null)
{
throw new NullReferenceException(nameof(pendingState));
}
payment_dto.Status = pendingState.Id;
Payment PaymentModel = _mapper.Map <Payment_Dto, Payment>(payment_dto);
switch (payment_dto.amount)
{
case decimal amount when payment_dto.amount <= 20:
_logger.LogInformation("Using ICheapPaymentGateway for processing payment");
return(await ICheapPaymentGateway(PaymentModel, 0));
case decimal amount when payment_dto.amount > 20 && payment_dto.amount < 500:
_logger.LogInformation("Using IExpensivePaymentGateway for processing payment");
return(await IExpensivePaymentGateway(PaymentModel, false, 0));
default:
_logger.LogInformation("Using PremiumPaymentService for processing payment");
return(await IExpensivePaymentGateway(PaymentModel, true, 0));
}
}
public async Task<IActionResult> ProcessPayment(Payment_Dto model, [FromServices] IOptions<ApiBehaviorOptions> apiBehaviorOptions)
{
if (!ModelState.IsValid)
return BadRequest(ModelState);
var validationResult = validators.ValidateModel(model);
if (!validationResult.Item1)
{
foreach (KeyValuePair<string, string> error in validationResult.Item2)
{
ModelState.AddModelError(error.Key, error.Value);
}
return apiBehaviorOptions.Value.InvalidModelStateResponseFactory(ControllerContext);
}
var result = await _paymentRepository.ChoosePaymentHandler(model);
Response.Headers.Add("X-Resource", Url.Action("Get", new { id = result.Id}));
return Created("get_payment_status", result);
}
public (bool, List <KeyValuePair <string, string> >) ValidateModel(Payment_Dto model)
{
bool isValid = true;
List <KeyValuePair <string, string> > errors = new List <KeyValuePair <string, string> >();
bool validNumber = ValidateCreditCard(model.card_number);
if (!validNumber)
{
isValid = false;
errors.Add(new KeyValuePair <string, string>("card_number", "invalid credit card"));
}
var validExpiryDate = validateExpiryDate(model.expiry_date, DateTime.UtcNow);
if (!validExpiryDate.Item1)
{
isValid = validExpiryDate.Item1;
errors.Add(validExpiryDate.Item2.Value);
}
return(isValid, errors);
}
