public override byte[] ToBytes()
{
return(TLUtils.Combine(
TLUtils.SignatureToBytes(Signature),
PaymentToken.ToBytes(),
GoogleTransactionId.ToBytes()));
}
// POST /api/payments
public async Task <PaymentCompleteResponse> Post([FromBody] PaymentResponse payment)
{
// Validate the bearer token
string actionPerformer = await TokenValidator.ValidateAuthorizationHeader(Request.Headers.Authorization);
if (string.IsNullOrEmpty(actionPerformer))
{
throw new UnauthorizedAccessException();
}
// TODO: A real payment processor should validate that the action performer
// matches the email address that the invoice was sent to
// Parse the token
PaymentToken parsedToken = new PaymentToken(payment.Details.PaymentToken);
// The sample only supports test tokens
if (!parsedToken.IsTestToken)
{
throw new HttpResponseException(HttpStatusCode.BadRequest);
}
// Check the format
switch (parsedToken.Format.ToLower())
{
case "stripe":
return(CreateMockStripePaymentResponse(parsedToken, payment));
default:
throw new HttpResponseException(HttpStatusCode.BadRequest);
}
}
public void ConvertorEqualToCoin()
{
PaymentToken ten = new PaymentToken(10, 10);
ITokenConverter convertor = new SterlingTokenConverter(ten);
ICoin c = convertor.Coin;
ICoin coin = new TenPence();
Assert.AreEqual(coin.Worth, c.Worth);
}
public void TestWrongCoin()
{
PaymentToken euro = new PaymentToken(101, 99);
ITokenConverter convertor = new SterlingTokenConverter(euro);
ICoin c = convertor.Coin;
Assert.AreEqual(c, null);
}
public void ConvertMoneyForBuying()
{
PaymentToken pound = new PaymentToken(100, 100);
ITokenConverter convertor = new SterlingTokenConverter(pound);
ICoin c = convertor.Coin;
Assert.AreEqual(c.Worth, 1);
}
public void IsCoinGoodForMachine()
{
PaymentToken two = new PaymentToken(2, 2);
ITokenConverter convertor = new SterlingTokenConverter(two);
var a = vm.CurrentPayment;
vm.MakePayment(convertor.Coin);
var b = vm.CurrentPayment;
Assert.AreEqual(b, 0);
Assert.AreEqual(a, 0);
}
public void RollingChangeCalculator()
{
PaymentToken fifty = new PaymentToken(50, 50);
ITokenConverter convertor1 = new SterlingTokenConverter(fifty);
vm.MakePayment(convertor1.Coin);
vm.MakePurchase("A1");
var coinChange = vm.GetChange.Sum(c => c.Worth);
var a = vm.AvailableChange;
Assert.AreEqual(0, a);
Assert.AreEqual(0.1, coinChange);
}
public void ResetCoins()
{
PaymentToken pound = new PaymentToken(100, 100);
PaymentToken five = new PaymentToken(5, 5);
ITokenConverter convertor1 = new SterlingTokenConverter(pound);
ICoin c1 = convertor1.Coin;
ITokenConverter convertor2 = new SterlingTokenConverter(five);
ICoin c2 = convertor2.Coin;
vm.MakePayment(c1);
vm.MakePayment(c1);
vm.ReturnCoins();
Assert.AreEqual(vm.CurrentPayment, 0);
}
public async Task Create_a_new_payment_token_with_success()
{
// Arrange
var expectedResponse = new PaymentTokenResponse
{
Id = "e06809b9da0a3118fa282a18c1f5dc09",
Method = Constants.PaymentMethod.CREDIT_CARD
};
var paymentRequest = new PaymentTokenRequest
{
AccountId = "2d8b228d-4183-44b8-ad3b-b8ab0db2aacd",
Method = Constants.PaymentMethod.CREDIT_CARD,
Test = true,
PaymentData = new PaymentInfoModel
{
FirstName = "Rodrigo",
LastName = "Couto",
Month = "12",
Year = "2018",
Number = "4111111111111111",
VerificationValue = "123"
}
};
PaymentTokenResponse paymentTokenResponse;
// Act
using (var apiClient = new PaymentToken())
{
paymentTokenResponse = await apiClient.CreateAsync(paymentRequest).ConfigureAwait(false);
}
// Assert
Assert.That(paymentTokenResponse.Id, Is.Not.Empty);
Assert.That(paymentTokenResponse.Method, Is.EqualTo(expectedResponse.Method));
}
public async Task <PaymentRecord> ProcessPaymentAsync(PaymentRequest paymentRequest, PaymentResponse paymentResponse)
{
if (paymentRequest == null)
{
throw new ArgumentNullException(nameof(paymentRequest));
}
if (paymentResponse == null)
{
throw new ArgumentNullException(nameof(paymentResponse));
}
if (!MicrosoftPayMethodData.MethodName.Equals(paymentResponse.MethodName, StringComparison.OrdinalIgnoreCase))
{
throw new ArgumentOutOfRangeException("Payment method is not supported.");
}
var details = JObject.FromObject(paymentResponse.Details);
var paymentToken = PaymentToken.Parse(details.GetValue("paymentToken").Value <string>());
if (string.IsNullOrWhiteSpace(paymentToken.Source))
{
throw new ArgumentNullException("Payment token source is empty.");
}
if (paymentToken.Format != PaymentTokenFormat.Stripe)
{
throw new ArgumentOutOfRangeException("Payment token format is not Stripe.");
}
if (!AppSettings.MerchantId.Equals(paymentToken.MerchantId, StringComparison.OrdinalIgnoreCase))
{
throw new ArgumentOutOfRangeException("Merchant id is not supported.");
}
if (!paymentToken.Amount.Currency.Equals(paymentRequest.Details.Total.Amount.Currency))
{
throw new ArgumentOutOfRangeException("Payment token amount currency mismatch.");
}
if (!paymentToken.Amount.Value.Equals(paymentRequest.Details.Total.Amount.Value))
{
throw new ArgumentOutOfRangeException("Payment token amount value mismatch.");
}
var result = new PaymentRecord()
{
OrderId = Guid.Parse(paymentRequest.Id),
TransactionId = Guid.NewGuid(),
MethodName = paymentResponse.MethodName,
PaymentProcessor = paymentToken.Format.ToString(),
ShippingAddress = paymentResponse.ShippingAddress,
ShippingOption = paymentResponse.ShippingOption,
Items = paymentRequest.Details.DisplayItems,
Total = paymentRequest.Details.Total,
LiveMode = !paymentToken.IsEmulated,
};
// If the payment token is microsoft emulated do not charge (as it will fail)
if (paymentToken.IsEmulated)
{
return(result);
}
var chargeOptions = new StripeChargeCreateOptions()
{
Currency = paymentToken.Amount.Currency,
Amount = (int)(double.Parse(paymentToken.Amount.Value) * 100), // Amount in cents
Description = paymentRequest.Id,
SourceTokenOrExistingSourceId = paymentToken.Source,
};
try
{
var charge = await this.chargeService.CreateAsync(chargeOptions);
if (charge.Status.Equals("succeeded", StringComparison.OrdinalIgnoreCase) && charge.Captured == true)
{
// Charge succeeded, return payment paymentRecord
// Ideally, you should register the transaction using the PaymentRecord and charge.Id
return(result);
}
// Other statuses may include processing "pending" or "success" with non captured funds. It is up to the merchant how to handle these cases.
// If payment is captured but not charged this would be considered "unknown" (charge the captured amount after shipping scenario)
// Merchant might choose to handle "pending" and "failed" status or handle "success" status with funds captured null or false
// More information @ https://stripe.com/docs/api#charge_object-captured
throw new PaymentException($"Could not process charge using Stripe with charge.status: {charge.Status} and charge.captured: {charge.Captured}");
}
catch (StripeException ex)
{
Debug.Write($"Error processing payment with Stripe: {ex.Message}");
throw new PaymentException("Error processing payment with Stripe.", ex);
}
}
/// <summary>
/// Starts a checkout operation and runs it to completion.
/// </summary>
public static async Task CheckoutAsync(ShoppingCart shoppingCart)
{
Uri merchantUri = new Uri("http://www.contoso.com");
PaymentMerchantInfo merchantInfo = new PaymentMerchantInfo(merchantUri);
PaymentOptions options = new PaymentOptions();
options.RequestShipping = true;
options.ShippingType = PaymentShippingType.Delivery;
options.RequestPayerEmail = PaymentOptionPresence.Optional;
options.RequestPayerName = PaymentOptionPresence.Required;
options.RequestPayerPhoneNumber = PaymentOptionPresence.Optional;
PaymentRequest request = new PaymentRequest(
CreatePaymentDetails(shoppingCart),
SupportedPaymentMethods,
merchantInfo,
options);
IAsyncOperation <PaymentRequestSubmitResult> submitOperation = null;
Action abortSubmitFunc = () =>
{
submitOperation.Cancel();
};
PaymentRequestChangedHandler changedHandler = (sender, args) =>
{
PaymentRequestChangedEventHandler(abortSubmitFunc, args, shoppingCart);
};
PaymentMediator mediator = new PaymentMediator();
submitOperation = mediator.SubmitPaymentRequestAsync(request, changedHandler);
PaymentRequestSubmitResult result = await submitOperation;
if (result.Status != PaymentRequestStatus.Succeeded)
{
string message = result.Status == PaymentRequestStatus.Canceled ?
"The payment was canceled." :
"The payment failed.";
MessageDialog failedMessageDialog = new MessageDialog(message);
await failedMessageDialog.ShowAsync();
return;
}
PaymentResponse response = result.Response;
PaymentToken token = response.PaymentToken;
bool paymentSucceeded = false;
switch (token.PaymentMethodId)
{
case BasicCardPaymentProtocol.PaymentMethodId:
BasicCardResponse basicCardResponse = BasicCardPaymentProtocol.ParseResponse(token.JsonDetails);
//
// TODO: Use data inside 'basicCardResponse' to collect payment.
//
paymentSucceeded = true;
break;
case MicrosoftPayProtocol.PaymentMethodId:
MicrosoftPayProtocolResponse microsoftPayResponse = MicrosoftPayProtocol.ParseResponse(token.JsonDetails);
switch (microsoftPayResponse.Format)
{
case "Stripe":
//
// TODO: Use data inside 'microsoftPayResponse.Token' to collect payment.
//
paymentSucceeded = true;
break;
case "Error":
paymentSucceeded = false;
break;
case "Invalid":
throw new Exception("The payment request was invalid.");
default:
throw new Exception("Unsupported payment gateway.");
}
break;
default:
await result.Response.CompleteAsync(PaymentRequestCompletionStatus.Unknown);
throw new Exception("Unsupported payment method ID.");
}
await result.Response.CompleteAsync(paymentSucceeded?PaymentRequestCompletionStatus.Succeeded : PaymentRequestCompletionStatus.Failed);
string completionMessage = paymentSucceeded ?
"The payment succeeded." :
"Unable to process the payment.";
MessageDialog messageDialog = new MessageDialog(completionMessage);
await messageDialog.ShowAsync();
}
public override int GetHashCode()
{
unchecked
{
return(((PaymentProcessor != null ? PaymentProcessor.GetHashCode() : 0) * 397) ^ (PaymentToken != null ? PaymentToken.GetHashCode() : 0));
}
}
private PaymentCompleteResponse CreateMockStripePaymentResponse(PaymentToken token, PaymentResponse payment)
{
// Returns a mock response
// Typically you would use the Stripe API here to submit the payment
// token for processing, then build your response based on the Stripe
// API response.
// Since we only handle test tokens, we can do simple
// string compares for the values specified in
// https://stripe.com/docs/testing#cards
if (token.Payload == "tok_chargeDeclined")
{
return(CreateMockCardDeclinedResponse(
payment.RequestId, payment.Details.ProductContext.InvoiceId,
payment.Details.Amount));
}
if (token.Payload == "tok_visa" ||
token.Payload == "tok_mastercard" ||
token.Payload == "tok_amex")
{
return(new PaymentCompleteResponse()
{
RequestId = payment.RequestId,
Details = "Thank you for paying your bill!",
Entity = new Invoice()
{
Identifier = payment.Details.ProductContext.InvoiceId,
Url = "https://contoso.com/invoice",
Broker = new LocalBusiness()
{
Name = "Contoso"
},
PaymentDueDate = new DateTime(2019, 1, 31),
PaymentStatus = PaymentStatus.PaymentComplete,
TotalPaymentDue = new PriceSpecification()
{
// Bill is paid so amount due is set to 0
Price = 0.00,
PriceCurrency = "USD"
},
ConfirmationNumber = "98765"
},
Result = PaymentResult.Success
});
}
// Not one of the TEST mode cards, return invalid number error
return(new PaymentCompleteResponse()
{
RequestId = payment.RequestId,
Details = "We were unable to charge your credit card.",
Result = PaymentResult.Fail,
Error = new PaymentCompleteError()
{
Code = "card_error",
Message = "Card cannot be processed.",
Target = "stripeToken",
InnerError = new PaymentCompleteError()
{
Code = PaymentErrorCodes.InvalidNumber,
Message = "Sample expects test tokens only."
}
}
});
}
