public ExpressCheckoutResult SetExpressCheckout()
{
HttpContext context = HttpContext.Current;
User user = Token.Instance.User;
Basket basket = user.Basket;
//MAKE SURE BASKET IS PROPERLY PACKAGED FOR CHECKOUT
basket.Package();
//GET EXISTING SESSION IF IT IS PRESENT
ExpressCheckoutSession existingSession = ExpressCheckoutSession.Current;
if (existingSession != null)
{
WebTrace.Write("Existing session token: " + existingSession.Token);
}
//CREATE THE EXPRESS CHECKOUT REQUEST OBJECT
SetExpressCheckoutRequestType expressCheckoutRequest = new SetExpressCheckoutRequestType();
expressCheckoutRequest.SetExpressCheckoutRequestDetails = new SetExpressCheckoutRequestDetailsType();
if (existingSession != null)
{
expressCheckoutRequest.SetExpressCheckoutRequestDetails.Token = existingSession.Token;
}
expressCheckoutRequest.Version = "1.0";
//GET THE CURRENCY FOR THE TRANSACTION
string baseCurrencyCode = Token.Instance.Store.BaseCurrency.ISOCode;
CurrencyCodeType baseCurrency = PayPalProvider.GetPayPalCurrencyType(baseCurrencyCode);
//BUILD THE REQUEST DETAILS
SetExpressCheckoutRequestDetailsType expressCheckoutDetails = expressCheckoutRequest.SetExpressCheckoutRequestDetails;
LSDecimal basketTotal = basket.Items.TotalPrice();
WebTrace.Write("Basket Total: " + basketTotal.ToString());
expressCheckoutDetails.OrderTotal = new BasicAmountType();
expressCheckoutDetails.OrderTotal.currencyID = baseCurrency;
expressCheckoutDetails.OrderTotal.Value = string.Format("{0:##,##0.00}", basketTotal);
expressCheckoutDetails.MaxAmount = new BasicAmountType();
expressCheckoutDetails.MaxAmount.currencyID = baseCurrency;
expressCheckoutDetails.MaxAmount.Value = string.Format("{0:##,##0.00}", basketTotal + 50);
//SET THE URLS
string storeUrl = GetStoreUrl();
expressCheckoutDetails.ReturnURL = storeUrl + "/PayPalExpressCheckout.aspx?Action=GET";
expressCheckoutDetails.CancelURL = storeUrl + "/PayPalExpressCheckout.aspx?Action=CANCEL";
//SET THE CUSTOM VALUE TO THE USER ID FOR MATCHING DURING GET
expressCheckoutDetails.Custom = "UID" + basket.UserId.ToString();
//SET THE CUSTOMER ADDRESS
Address billingAddress = user.PrimaryAddress;
AddressType address = new AddressType();
address.Name = billingAddress.FirstName + " " + billingAddress.LastName;
address.Street1 = billingAddress.Address1;
address.Street2 = billingAddress.Address2;
address.CityName = billingAddress.City;
address.PostalCode = billingAddress.PostalCode;
if (billingAddress.Country != null)
{
address.Country = PayPalProvider.GetPayPalCountry(billingAddress.CountryCode);
}
else
{
address.Country = CountryCodeType.US;
}
address.CountrySpecified = true;
expressCheckoutDetails.BuyerEmail = billingAddress.Email;
expressCheckoutDetails.Address = address;
//SET THE PAYMENT ACTION
expressCheckoutDetails.PaymentAction = this.UseAuthCapture ? PaymentActionCodeType.Sale : PaymentActionCodeType.Authorization;
expressCheckoutDetails.PaymentActionSpecified = true;
//EXECUTE REQUEST
SetExpressCheckoutResponseType expressCheckoutResponse;
context.Trace.Write("DO SOAP CALL");
expressCheckoutResponse = (SetExpressCheckoutResponseType)SoapCall("SetExpressCheckout", expressCheckoutRequest);
context.Trace.Write("CHECK SOAP RESULT");
if (expressCheckoutResponse == null)
{
ErrorType[] customErrorList = new ErrorType[1];
ErrorType customError = new ErrorType();
customError.ErrorCode = "NORESP";
customError.ShortMessage = "No Response From Server";
customError.LongMessage = "The PayPal service is unavailable at this time.";
customErrorList[0] = customError;
return(new ExpressCheckoutResult(0, string.Empty, customErrorList));
}
//IF ERRORS ARE IN RESPONSE, RETURN THEM AND EXIT PROCESS
if (expressCheckoutResponse.Errors != null)
{
return(new ExpressCheckoutResult(0, string.Empty, expressCheckoutResponse.Errors));
}
//NO ERRORS FOUND, PUT PAYPAL DETAILS INTO SESSION
context.Trace.Write("Store PayPal Token In Session");
ExpressCheckoutSession newSession = new ExpressCheckoutSession();
newSession.Token = expressCheckoutResponse.Token;
newSession.TokenExpiration = DateTime.UtcNow.AddHours(3);
newSession.Save();
context.Trace.Write("Saved PayPal Token:" + newSession.Token);
context.Trace.Write("Token Expiration:" + newSession.TokenExpiration.ToLongDateString());
//RETURN TO CALLER INCLUDING REDIRECTION URL
string redirectUrl = "https://www" + (this.UseSandbox ? ".sandbox" : string.Empty) + ".paypal.com/webscr?cmd=_express-checkout&token=" + expressCheckoutResponse.Token;
return(new ExpressCheckoutResult(0, redirectUrl, null));
}
public void ProcessRequest(HttpContext context)
{
//GET REFERENCE TO REQUEST
HttpRequest request = context.Request;
HttpResponse response = context.Response;
TraceContext trace = context.Trace;
//RECORD FORM VALUES TO TRACE OUTPUT
foreach (string key in request.Form)
{
context.Trace.Write(key + ":" + request.Form[key]);
}
//SETUP DEFAULT REDIRECT URL
string redirectUrl = "~/Default.aspx";
//INITIALIZE THE PAYPAL PROVIDER
PaymentGateway paypalGateway = PayPalProvider.GetPayPalPaymentGateway(true);
if (paypalGateway == null)
{
response.Redirect(redirectUrl);
}
//LOOK FOR ORDER ID
int orderId;
string customValue = request.Form["custom"];
if (!String.IsNullOrEmpty(customValue))
{
int index = customValue.IndexOf(":");
if (index > 0)
{
orderId = AlwaysConvert.ToInt(customValue.Substring(0, index));
}
else
{
orderId = AlwaysConvert.ToInt(customValue);
}
}
else
{
// TRY TO LOCATE ORDER ID AS QUERY STRING PARAMETER
orderId = AlwaysConvert.ToInt(request.QueryString["OrderId"]);
}
//IF ORDER ID WAS NOT IN CUSTOM, SEE IF WE CAN FIND THE ORDER VIA TRANSACTION ID
if (orderId == 0)
{
trace.Write("OrderId not found in custom field; lookup via transaction ID");
string parentTransactionId = IpnProcessor.GetFormValue(request.Form, "parent_txn_id");
if (!string.IsNullOrEmpty(parentTransactionId) && (paypalGateway != null))
{
trace.Write("Query for parent transaction " + parentTransactionId);
orderId = FindPayPalOrderId(paypalGateway.PaymentGatewayId, parentTransactionId);
if (orderId != 0)
{
trace.Write("Order ID Found: " + orderId.ToString());
}
}
}
//TRY TO LOAD ORDER
Order order = OrderDataSource.Load(orderId);
//IF ORDER LOAD FAILS, STOP PROCESSING AND REDIRECT
if (order == null)
{
response.Redirect(redirectUrl);
}
//ORDER LOAD SUCCESSFUL, UPDATE DEFAULT REDIRECT URL
redirectUrl = "~/Members/MyOrder.aspx?OrderId=" + orderId.ToString();
//IF GATEWAY NOT FOUND, STOP PROCESSING AND REDIRECT
PayPalProvider provider = (PayPalProvider)paypalGateway.GetInstance();
//GET TRANSACTION AMOUNT
LSDecimal curSignedPayment = AlwaysConvert.ToDecimal(request.Form["mc_gross"]);
LSDecimal curPayment = Math.Abs((Decimal)curSignedPayment);
context.Trace.Write("Transaction Amount is " + curPayment.ToString());
if (curPayment != 0)
{
//VERIFY PAYMENT NOTIFICATION WITH PAYPAL
bool valid = provider.ValidateNotification(request.Form.ToString());
if (!valid)
{
response.Redirect(redirectUrl);
}
//VERIFY THE RECEIVER EMAIL
string lowerReceiverEmail = AlwaysConvert.ToString(request.Form["receiver_email"]).ToLowerInvariant();
string lowerProviderAccount = provider.PayPalAccount.ToLowerInvariant();
if (lowerReceiverEmail != lowerProviderAccount)
{
context.Trace.Write("Receiver Email (" + lowerReceiverEmail + ") does not match Primary Account (" + lowerProviderAccount + ")");
response.Redirect(redirectUrl);
}
//CHECK WHETHER TRANSACTION IS ALREADY PRESENT IN DATABASE
string paypalTransactionId = IpnProcessor.GetFormValue(request.Form, "txn_id");
string authTransactionId = IpnProcessor.GetFormValue(request.Form, "auth_id");
string paymentStatus = IpnProcessor.GetFormValue(request.Form, "payment_status").ToUpperInvariant();
string authStatus = IpnProcessor.GetFormValue(request.Form, "auth_status").ToUpperInvariant();
context.Trace.Write("Transaction ID Is " + paypalTransactionId);
context.Trace.Write("Payment Status Is " + paymentStatus);
context.Trace.Write("Auth Status Is " + authStatus);
//CHECK FOR THIS PAYPAL TRANSACTION (MATCHING PROVIDER, PAYPAL TRANSACTION ID, AND PAYMENT STATUS)
Payment payment = null;
Transaction pendingTransaction = null;
if (!string.IsNullOrEmpty(paypalTransactionId))
{
TransactionCollection matchingTransactions = TransactionDataSource.LoadForProviderTransaction(paypalGateway.PaymentGatewayId, paypalTransactionId);
foreach (Transaction tx in matchingTransactions)
{
//WHEN PAYMENT IS BY ECHECK, IPN ISSUES A PENDING TRANSACTION
//SECOND IPN COMES FOR COMPLETED STATUS USING SAME TRANSACTION ID
if ((tx.ResponseCode == "PENDING") && (paymentStatus != "PENDING"))
{
//WE HAVE TO GET THE TRANSACTION VIA THE PAYMENT OBJECT
//OTHERWISE WE WILL HAVE PROBLEMS WITH DATA CONSISTENCY LATER
payment = tx.Payment;
foreach (Transaction ptx in payment.Transactions)
{
if (ptx.TransactionId == tx.TransactionId)
{
pendingTransaction = ptx;
}
}
}
else if ((tx.TransactionType != TransactionType.Void) && (paymentStatus == "VOIDED"))
{
//IF WE VOID AN AUTHORIZATION, THE VOID HAS THE SAME TXID
//THE AUTHORIZATION WILL HAVE A BLANK RESPONSE CODE
//THE VOID SHOULD HAVE A 'VOIDED' RESPONSE CODE
//(THIS TRANSACTION IS NOT A MATCH AND SHOULD BE IGNORED)
}
else
{
//NO FURTHER PROCESSING, REDIR TO ORDER SCREEN
context.Trace.Write("Transaction ID " + paypalTransactionId + " Already Exists in Database");
response.Redirect(redirectUrl);
}
}
}
Transaction transaction = null;
PaymentMethod paypalMethod = PayPalProvider.GetPayPalPaymentMethod(true);
PaymentCollection orderPayments = order.Payments;
Transaction authTransaction = null;
PaymentStatus[] validAuthStatuses = { PaymentStatus.Unprocessed, PaymentStatus.AuthorizationPending };
context.Trace.Write("Processing Payment Status: " + paymentStatus);
switch (paymentStatus)
{
case "PENDING":
//THIS IS A PENDING TRANSACTION, GET PENDING REASON AND FIND OUT IF IT IS AN ECHECK WAITING TO CLEAR
string pendingReason = IpnProcessor.GetFormValue(request.Form, "pending_reason").ToLowerInvariant();
bool isPendingeCheck = (pendingReason == "echeck");
bool isPendingAuthorization = (pendingReason == "authorization");
context.Trace.Write("Pending Reason: " + pendingReason);
context.Trace.Write("Is Pending eCheck: " + isPendingeCheck.ToString());
context.Trace.Write("Is Pending Authorization: " + isPendingAuthorization.ToString());
//FIND THE PAYPAL PAYMENT THAT IS UNPROCESSED OR PENDING AUTHORIZATION
payment = FindPaypalPayment(paypalMethod.PaymentMethodId, orderPayments, validAuthStatuses);
if (payment != null)
{
//SEE IF WE CAN FIND A PENDING PAYPAL TRANSACTION WITHOUT A TXID
foreach (Transaction tx in payment.Transactions)
{
if ((tx.ResponseCode == "PENDING") && string.IsNullOrEmpty(tx.ProviderTransactionId))
{
transaction = tx;
}
}
}
//IF WE DID NOT FIND AN EXISTING TRANSACTION, CREATE A NEW ONE
if (transaction == null)
{
transaction = new Transaction();
}
//UPDATE THE TRANSACTION VALUES
transaction.TransactionType = (isPendingeCheck ? TransactionType.Capture : TransactionType.Authorize);
transaction.PaymentGatewayId = paypalGateway.PaymentGatewayId;
transaction.ProviderTransactionId = IpnProcessor.GetFormValue(request.Form, "txn_id");
transaction.TransactionDate = AlwaysConvert.ToDateTime(request.Form["payment_date"], DateTime.UtcNow).ToUniversalTime();
transaction.Amount = AlwaysConvert.ToDecimal(IpnProcessor.GetFormValue(request.Form, "mc_gross"));
transaction.TransactionStatus = TransactionStatus.Successful;
if (isPendingAuthorization)
{
//THIS IS AN EXPECTED RESPONSE, NO NEED TO SAVE THE REASON CODES
transaction.ResponseMessage = string.Empty;
transaction.ResponseCode = string.Empty;
}
else
{
transaction.ResponseMessage = pendingReason;
transaction.ResponseCode = "PENDING";
}
transaction.AuthorizationCode = IpnProcessor.GetFormValue(request.Form, "auth_id");
transaction.RemoteIP = IpnProcessor.GetFormValue(request.ServerVariables, "REMOTE_ADDR");
transaction.Referrer = IpnProcessor.GetFormValue(request.ServerVariables, "HTTP_REFERER");
//CREATE A PAYMENT IF AN EXISTING ONE WAS NOT FOUND
if (payment == null)
{
payment = new Payment();
payment.OrderId = orderId;
payment.PaymentMethodId = paypalMethod.PaymentMethodId;
payment.PaymentMethodName = paypalMethod.Name;
order.Payments.Add(payment);
}
//UPDATE PAYMENT DETAILS
payment.ReferenceNumber = IpnProcessor.GetFormValue(request.Form, "payer_email");
payment.Amount = transaction.Amount;
payment.PaymentDate = transaction.TransactionDate;
if (isPendingAuthorization)
{
payment.PaymentStatus = PaymentStatus.Authorized;
payment.PaymentStatusReason = string.Empty;
}
else
{
payment.PaymentStatus = (isPendingeCheck ? PaymentStatus.CapturePending : PaymentStatus.AuthorizationPending);
payment.PaymentStatusReason = transaction.ResponseMessage;
}
//ADD IN TRANSACTION
payment.Transactions.Add(transaction);
break;
case "COMPLETED":
//IF THIS IS A CAPTURE FROM AN AUTHORIZATION, FIND THE AUTHORIZATION TRANSACTION
//AND UPDATE THE STATUS ACCORDINGLY, DEPENDING ON WHETHER ADDITIONAL SETTLEMENT TRANSACTIONS REMAIN (INTREMSETTLE > 0)
authTransaction = null;
authTransactionId = IpnProcessor.GetFormValue(request.Form, "auth_id");
if (!string.IsNullOrEmpty(authTransactionId))
{
TransactionCollection matchingTransactions = TransactionDataSource.LoadForProviderTransaction(paypalGateway.PaymentGatewayId, authTransactionId);
//SHOULD ONLY BE ONE
if (matchingTransactions.Count > 0)
{
authTransaction = matchingTransactions[0];
}
}
//IF PAYPAL IS RUNNING IN CAPTURE MODE, WE MAY HAVE A COMPLETED PAYMENT
//WITH A PENDING OR UNPROCESSED PAYMENT ALREADY ASSOCIATED TO ORDER
if (pendingTransaction == null)
{
//FIND THE PAYPAL PAYMENT THAT IS UNPROCESSED OR PENDING
payment = FindPaypalPayment(paypalMethod.PaymentMethodId, orderPayments, validAuthStatuses);
if (payment != null)
{
//SEE IF WE CAN FIND A PENDING PAYPAL TRANSACTION WITHOUT A TXID
foreach (Transaction tx in payment.Transactions)
{
if ((tx.ResponseCode == "PENDING") && string.IsNullOrEmpty(tx.ProviderTransactionId))
{
pendingTransaction = tx;
}
}
}
}
//SEE IF THIS TRANSACTION WAS PENDING (SUCH AS A CHECK WAITING TO CLEAR)
if (pendingTransaction != null)
{
//GET THE PENDING TRANSACTION AND PAYMENT
payment = order.Payments[order.Payments.IndexOf(pendingTransaction.PaymentId)];
transaction = payment.Transactions[payment.Transactions.IndexOf(pendingTransaction.TransactionId)];
}
else
{
//THIS IS NOT A PENDING TRANSACTION
//LOCATE THE APPROPRIATE PAYMENT
if (authTransaction != null)
{
payment = order.Payments[order.Payments.IndexOf(authTransaction.PaymentId)];
}
else
{
//FIND THE PAYPAL PAYMENT THAT CAN BE CAPTURED
PaymentStatus[] validCaptureStatuses = { PaymentStatus.Unprocessed, PaymentStatus.AuthorizationPending, PaymentStatus.Authorized, PaymentStatus.CaptureFailed, PaymentStatus.CapturePending };
payment = FindPaypalPayment(paypalMethod.PaymentMethodId, orderPayments, validCaptureStatuses);
//CREATE A PAYMENT IF AN EXISTING ONE WAS NOT FOUND
if (payment == null)
{
payment = new Payment();
payment.OrderId = orderId;
payment.PaymentMethodId = paypalMethod.PaymentMethodId;
payment.PaymentMethodName = paypalMethod.Name;
order.Payments.Add(payment);
}
}
//CREATE A NEW TRANSACTION RECORD
transaction = new Transaction();
transaction.PaymentId = payment.PaymentId;
}
//UPDATE THE TRANSACTION DETAILS
transaction.TransactionType = TransactionType.Capture;
transaction.PaymentGatewayId = paypalGateway.PaymentGatewayId;
transaction.TransactionDate = AlwaysConvert.ToDateTime(request.Form["payment_date"], DateTime.UtcNow).ToUniversalTime();
transaction.RemoteIP = IpnProcessor.GetFormValue(request.ServerVariables, "REMOTE_ADDR");
transaction.Referrer = IpnProcessor.GetFormValue(request.ServerVariables, "HTTP_REFERER");
transaction.TransactionStatus = TransactionStatus.Successful;
transaction.ProviderTransactionId = IpnProcessor.GetFormValue(request.Form, "txn_id");
transaction.AuthorizationCode = IpnProcessor.GetFormValue(request.Form, "auth_id");
transaction.Amount = AlwaysConvert.ToDecimal(IpnProcessor.GetFormValue(request.Form, "mc_gross"));
transaction.ResponseCode = paymentStatus;
transaction.ResponseMessage = string.Empty;
//HANDLE PARTIAL / FINAL CAPTURES
int remainingSettle = AlwaysConvert.ToInt(IpnProcessor.GetFormValue(request.Form, "remaining_settle"));
if (remainingSettle == 0)
{
//THIS IS A FINAL CAPTURE
transaction.TransactionType = TransactionType.Capture;
//SET PAYMENT AMOUNT TO SUM OF ALL CAPTURES
LSDecimal totalCaptures = 0;
foreach (Transaction tx in payment.Transactions)
{
if ((transaction.TransactionId != tx.TransactionId) &&
(tx.TransactionType == TransactionType.PartialCapture || tx.TransactionType == TransactionType.Capture))
{
totalCaptures += tx.Amount;
}
}
totalCaptures += transaction.Amount;
payment.Amount = totalCaptures;
}
else
{
//THIS IS A PARTIAL CAPTURE
transaction.TransactionType = TransactionType.PartialCapture;
//LEAVE PAYMENT AMOUNT ALONE (AMOUNT OF AUTHORIZATION)
}
//UPDATE PAYMENT DETAILS
payment.PaymentDate = transaction.TransactionDate;
payment.PaymentStatus = (remainingSettle == 0) ? PaymentStatus.Captured : PaymentStatus.Authorized;
payment.PaymentStatusReason = string.Empty;
//ADD IN TRANSACTION IF NEEDED
if (transaction.TransactionId == 0)
{
payment.Transactions.Add(transaction);
}
break;
case "REFUNDED":
case "REVERSED":
//GET THE REFUND AMOUNT
LSDecimal refundAmount = Math.Abs(AlwaysConvert.ToDecimal(IpnProcessor.GetFormValue(request.Form, "mc_gross")));
//TRY TO LOCATE THE CORRECT PAYMENT BASED ON CAPTURE TRANSACITON ID
payment = FindPayPalPayment(paypalGateway.PaymentGatewayId, orderPayments, IpnProcessor.GetFormValue(request.Form, "parent_txn_id"));
if (payment == null)
{
//SEE IF WE CAN FIND THE PAYMENT VIA AUTH TRANSACTION ID
payment = FindPayPalPayment(paypalGateway.PaymentGatewayId, orderPayments, IpnProcessor.GetFormValue(request.Form, "auth_id"));
}
//CREATE A REFUND TRANSACTION
transaction = new Transaction();
//CREATE A PAYMENT IF AN EXISTING ONE WAS NOT FOUND
if (payment == null)
{
payment = new Payment();
payment.OrderId = orderId;
payment.PaymentMethodId = paypalMethod.PaymentMethodId;
payment.PaymentMethodName = paypalMethod.Name;
payment.Amount = -1 * refundAmount;
transaction.TransactionType = TransactionType.Refund;
order.Payments.Add(payment);
}
else
{
if (payment.Amount == refundAmount)
{
//FULL REFUND
transaction.TransactionType = TransactionType.Refund;
payment.PaymentStatus = PaymentStatus.Refunded;
}
else
{
//PARTIAL REFUND
transaction.TransactionType = TransactionType.PartialRefund;
payment.Amount -= refundAmount;
payment.PaymentStatus = PaymentStatus.Captured;
}
}
transaction.PaymentGatewayId = paypalGateway.PaymentGatewayId;
transaction.ProviderTransactionId = IpnProcessor.GetFormValue(request.Form, "txn_id");
transaction.TransactionDate = AlwaysConvert.ToDateTime(request.Form["payment_date"], DateTime.UtcNow).ToUniversalTime();
transaction.TransactionStatus = TransactionStatus.Successful;
transaction.AuthorizationCode = IpnProcessor.GetFormValue(request.Form, "auth_id");
transaction.RemoteIP = IpnProcessor.GetFormValue(request.ServerVariables, "REMOTE_ADDR");
transaction.Referrer = IpnProcessor.GetFormValue(request.ServerVariables, "HTTP_REFERER");
transaction.Amount = refundAmount;
string responseMessage = IpnProcessor.GetFormValue(request.Form, "reason_code");
if (responseMessage != "refund")
{
transaction.ResponseCode = paymentStatus;
transaction.ResponseMessage = responseMessage;
}
//UPDATE PAYMENT DETAILS
payment.PaymentDate = transaction.TransactionDate;
payment.PaymentStatusReason = string.Empty;
//ADD IN TRANSACTION
payment.Transactions.Add(transaction);
break;
case "VOIDED":
//SEE IF WE CAN FIND THE PAYMENT VIA AUTH TRANSACTION ID
payment = FindPayPalPayment(paypalGateway.PaymentGatewayId, orderPayments, IpnProcessor.GetFormValue(request.Form, "auth_id"));
//WE ONLY NEED TO CONTINUE IF A PAYMENT TO VOID WAS FOUND
if (payment != null)
{
//PAYPAL DOES NOT SEND THE AMOUNT OF THE VOID
//SO IF THIS PAYMENT WAS PARTIALLY CAPTURED, WE NEED TO KNOW HOW MUCH TO VOID
LSDecimal remainingAuthorization = payment.Transactions.GetRemainingAuthorized();
if (remainingAuthorization > 0)
{
//CREATE A VOID TRANSACTION
transaction = new Transaction();
transaction.TransactionType = TransactionType.Void;
transaction.Amount = remainingAuthorization;
transaction.PaymentGatewayId = paypalGateway.PaymentGatewayId;
transaction.ProviderTransactionId = IpnProcessor.GetFormValue(request.Form, "txn_id");
transaction.TransactionDate = AlwaysConvert.ToDateTime(request.Form["payment_date"], DateTime.UtcNow).ToUniversalTime();
transaction.TransactionStatus = TransactionStatus.Successful;
transaction.AuthorizationCode = IpnProcessor.GetFormValue(request.Form, "auth_id");
transaction.RemoteIP = IpnProcessor.GetFormValue(request.ServerVariables, "REMOTE_ADDR");
transaction.Referrer = IpnProcessor.GetFormValue(request.ServerVariables, "HTTP_REFERER");
//UPDATE PAYMENT DETAILS
payment.PaymentDate = transaction.TransactionDate;
payment.PaymentStatusReason = string.Empty;
if (payment.Amount == remainingAuthorization)
{
//FULL VOID, CHANGE PAYMENT STATUS TO VOID
payment.PaymentStatus = PaymentStatus.Void;
}
else
{
//PARTIAL VOID, REDUCE PAYMENT AMOUNT BY VOID
payment.Amount -= remainingAuthorization;
//PAYMENT HAS NO REMAINING AUTHORIZATION AND SO IT IS CAPTURED
payment.PaymentStatus = PaymentStatus.Captured;
}
//ADD IN TRANSACTION
payment.Transactions.Add(transaction);
}
}
break;
case "FAILED":
//THIS IS A FAILED E-CHECK
//PENDINGTRANSACTION SHOULD HAVE BEEN OBTAINED ABOVE
if (payment != null && pendingTransaction != null)
{
pendingTransaction.TransactionStatus = TransactionStatus.Failed;
//MAKE SURE TO CLEAR OUT PENDING RESPONSECODE
pendingTransaction.ResponseCode = string.Empty;
//GET THE CURRENT TRANSACTION DATE
pendingTransaction.TransactionDate = AlwaysConvert.ToDateTime(request.Form["payment_date"], DateTime.UtcNow).ToUniversalTime();
//UPDATE PAYMENT DETAILS
payment.PaymentDate = pendingTransaction.TransactionDate;
payment.PaymentStatus = (IsVoidableFailure(payment) ? PaymentStatus.Void : PaymentStatus.CaptureFailed);
payment.PaymentStatusReason = string.Empty;
//SAVE PAYMENT (AND CHILD TRANSACTIONS)
payment.Save();
}
break;
default:
Logger.Warn("PayPal IPN transaction " + paypalTransactionId + " with a \"" + paymentStatus + "\" status was unhandled.");
break;
}
//IF PAYMENT IS SET, SAVE UPDATES
if (payment != null)
{
payment.Save();
}
}
response.Redirect(redirectUrl);
}
public ExpressCheckoutResult DoExpressCheckout()
{
HttpContext context = HttpContext.Current;
TraceContext trace = context.Trace;
string traceCategory = this.GetType().ToString();
ExpressCheckoutSession paypalSession = ExpressCheckoutSession.Current;
if (paypalSession == null)
{
//EXIT WITH EXCEPTION
ErrorType[] customErrorList = new ErrorType[1];
ErrorType customError = new ErrorType();
customError.ErrorCode = "SESSION";
customError.ShortMessage = "Missing Token";
customError.LongMessage = "The PayPal session token was expired or unavailable. Please try again.";
customErrorList[0] = customError;
return(new ExpressCheckoutResult(0, string.Empty, customErrorList));
}
trace.Write(traceCategory, "Detected PayPal Token:" + paypalSession.Token);
trace.Write(traceCategory, "Token Expiration:" + paypalSession.TokenExpiration.ToLongDateString());
if (string.IsNullOrEmpty(paypalSession.PayerID))
{
//EXIT WITH EXCEPTION
ErrorType[] customErrorList = new ErrorType[1];
ErrorType customError = new ErrorType();
customError.ErrorCode = "SESSION";
customError.ShortMessage = "Missing Payer ID";
customError.LongMessage = "The PayPal Payer ID is not present.";
customErrorList[0] = customError;
return(new ExpressCheckoutResult(0, string.Empty, customErrorList));
}
trace.Write(traceCategory, "Detected PayPal Payer ID:" + paypalSession.PayerID);
//GET THE CURRENCY FOR THE TRANSACTION
string storeCurrencyCode = Token.Instance.Store.BaseCurrency.ISOCode;
CurrencyCodeType baseCurrencyCode = PayPalProvider.GetPayPalCurrencyType(storeCurrencyCode);
//CREATE THE EXPRESS CHECKOUT
DoExpressCheckoutPaymentRequestType expressCheckoutRequest = new DoExpressCheckoutPaymentRequestType();
expressCheckoutRequest.DoExpressCheckoutPaymentRequestDetails = new DoExpressCheckoutPaymentRequestDetailsType();
expressCheckoutRequest.DoExpressCheckoutPaymentRequestDetails.Token = paypalSession.Token;
expressCheckoutRequest.DoExpressCheckoutPaymentRequestDetails.PaymentAction = this.UseAuthCapture ? PaymentActionCodeType.Sale : PaymentActionCodeType.Authorization;
expressCheckoutRequest.DoExpressCheckoutPaymentRequestDetails.PaymentActionSpecified = true;
expressCheckoutRequest.DoExpressCheckoutPaymentRequestDetails.PayerID = paypalSession.PayerID;
expressCheckoutRequest.Version = "1.0";
//SET THE ORDER TOTAL AMOUNTS
Basket basket = Token.Instance.User.Basket;
trace.Write(traceCategory, "Set Order Totals");
LSDecimal curOrderTotal = basket.Items.TotalPrice();
LSDecimal curShippingTotal = basket.Items.TotalPrice(OrderItemType.Shipping) + GetShippingCouponTotal(basket.Items);
LSDecimal curHandlingTotal = basket.Items.TotalPrice(OrderItemType.Handling);
LSDecimal curTaxTotal = basket.Items.TotalPrice(OrderItemType.Tax);
LSDecimal curItemTotal = curOrderTotal - (curShippingTotal + curHandlingTotal + curTaxTotal);
//MAKE SURE OUR BREAKDOWN IS VALID
if ((curShippingTotal < 0) || (curHandlingTotal < 0) || (curTaxTotal < 0) || (curItemTotal < 0))
{
//THE BREAKDOWN IS INVALID, DO NOT INCLUDE IT IN THE REQUEST
curShippingTotal = 0;
curHandlingTotal = 0;
curTaxTotal = 0;
curItemTotal = curOrderTotal;
}
//SET THE PAYMENT DETAILS
expressCheckoutRequest.DoExpressCheckoutPaymentRequestDetails.PaymentDetails = new PaymentDetailsType[1];
expressCheckoutRequest.DoExpressCheckoutPaymentRequestDetails.PaymentDetails[0] = new PaymentDetailsType();
PaymentDetailsType paymentDetails = expressCheckoutRequest.DoExpressCheckoutPaymentRequestDetails.PaymentDetails[0];
paymentDetails.OrderTotal = new BasicAmountType();
paymentDetails.OrderTotal.currencyID = baseCurrencyCode;
paymentDetails.OrderTotal.Value = string.Format("{0:##,##0.00}", curOrderTotal);
paymentDetails.ItemTotal = new BasicAmountType();
paymentDetails.ItemTotal.currencyID = baseCurrencyCode;
paymentDetails.ItemTotal.Value = string.Format("{0:##,##0.00}", curItemTotal);
paymentDetails.ShippingTotal = new BasicAmountType();
paymentDetails.ShippingTotal.currencyID = baseCurrencyCode;
paymentDetails.ShippingTotal.Value = string.Format("{0:##,##0.00}", curShippingTotal);
paymentDetails.HandlingTotal = new BasicAmountType();
paymentDetails.HandlingTotal.currencyID = baseCurrencyCode;
paymentDetails.HandlingTotal.Value = string.Format("{0:##,##0.00}", curHandlingTotal);
paymentDetails.TaxTotal = new BasicAmountType();
paymentDetails.TaxTotal.currencyID = baseCurrencyCode;
paymentDetails.TaxTotal.Value = string.Format("{0:##,##0.00}", curTaxTotal);
trace.Write(traceCategory, "Order Total: " + curOrderTotal);
trace.Write(traceCategory, "Item Total: " + curItemTotal);
trace.Write(traceCategory, "Shipping Total: " + curShippingTotal);
trace.Write(traceCategory, "Handling Total: " + curHandlingTotal);
trace.Write(traceCategory, "Tax Total: " + curTaxTotal);
//SET THE BUTTON SOURCE
trace.Write(traceCategory, "Set Button Source");
paymentDetails.ButtonSource = "ablecommerce-EC";
//SET THE NOTIFY URL
string notifyUrl = GetStoreUrl() + "/ProcessPayPal.ashx";
trace.Write(traceCategory, "IPN Callback URL: " + notifyUrl);
paymentDetails.NotifyURL = notifyUrl;
//WE HAVE ALL NECESSARY INFORMATION TO DO EXPRESS CHECKOUT
//COMMIT THE ORDER BEFORE SUBMITTING THE PAYPAL TRANSACTION
//CREATE THE ABLECOMMERCE PAYMENT ITEM
Payment checkoutPayment = new Payment();
checkoutPayment.PaymentMethodId = GetPayPalPaymentMethodId(false);
checkoutPayment.Amount = curOrderTotal;
checkoutPayment.CurrencyCode = baseCurrencyCode.ToString();
//AT THIS POINT, EXECUTE THE CHECKOUT TO SUBMIT THE ORDER
CheckoutRequest checkoutRequest = new CheckoutRequest(checkoutPayment);
CheckoutResponse checkoutResponse = basket.Checkout(checkoutRequest);
int orderId = checkoutResponse.OrderId;
//LOAD THE ORDER AND RE-OBTAIN THE PAYMENT RECORD TO AVOID DATA INCONSISTENCIES
Order order = OrderDataSource.Load(orderId);
if (order == null)
{
//EXIT WITH EXCEPTION
ErrorType[] customErrorList = new ErrorType[1];
ErrorType customError = new ErrorType();
customError.ErrorCode = "ORDER";
customError.ShortMessage = "Your order could not be completed at this time.";
customError.LongMessage = "Your order could not be completed at this time and payment was not processed. " + string.Join(" ", checkoutResponse.WarningMessages.ToArray());
customErrorList[0] = customError;
return(new ExpressCheckoutResult(0, string.Empty, customErrorList));
}
int findPaymentId = checkoutPayment.PaymentId;
foreach (Payment payment in order.Payments)
{
if (payment.PaymentId == findPaymentId)
{
checkoutPayment = payment;
}
}
//SET THE DESCRIPTION
paymentDetails.OrderDescription = "Order #" + order.OrderNumber.ToString();
paymentDetails.Custom = orderId.ToString();
//EXECUTE PAYPAL REQUEST
trace.Write(traceCategory, "Do Request");
DoExpressCheckoutPaymentResponseType expressCheckoutResponse = (DoExpressCheckoutPaymentResponseType)SoapCall("DoExpressCheckoutPayment", expressCheckoutRequest);
ErrorType[] responseErrors = null;
PaymentStatus finalPaymentStatus = PaymentStatus.Unprocessed;
bool isPendingeCheck = false;
if (expressCheckoutResponse != null)
{
if (expressCheckoutResponse.Errors == null)
{
//CREATE THE PAYPAL TRANSACTION RECORD
Transaction checkoutTransaction = new Transaction();
PaymentInfoType paymentInfo = expressCheckoutResponse.DoExpressCheckoutPaymentResponseDetails.PaymentInfo[0];
isPendingeCheck = (paymentInfo.PaymentStatus == PaymentStatusCodeType.Pending && paymentInfo.PendingReason == PendingStatusCodeType.echeck);
PaymentStatusCodeType paymentStatus = paymentInfo.PaymentStatus;
switch (paymentStatus)
{
case PaymentStatusCodeType.Completed:
case PaymentStatusCodeType.Processed:
case PaymentStatusCodeType.Pending:
if (isPendingeCheck)
{
finalPaymentStatus = PaymentStatus.CapturePending;
checkoutTransaction.ResponseCode = "PENDING";
checkoutTransaction.ResponseMessage = "echeck";
}
else
{
finalPaymentStatus = (paymentStatus != PaymentStatusCodeType.Pending) ? PaymentStatus.Captured : PaymentStatus.Authorized;
}
checkoutTransaction.TransactionStatus = TransactionStatus.Successful;
break;
default:
finalPaymentStatus = PaymentStatus.Unprocessed;
checkoutTransaction.TransactionStatus = TransactionStatus.Failed;
checkoutTransaction.ResponseCode = expressCheckoutResponse.Ack.ToString();
checkoutTransaction.ResponseMessage = paymentStatus.ToString().ToUpperInvariant();
break;
}
checkoutTransaction.TransactionType = this.UseAuthCapture ? TransactionType.Capture : TransactionType.Authorize;
checkoutTransaction.Amount = AlwaysConvert.ToDecimal(paymentInfo.GrossAmount.Value, (Decimal)curOrderTotal);
checkoutTransaction.AuthorizationCode = paymentInfo.TransactionID;
checkoutTransaction.AVSResultCode = "U";
checkoutTransaction.ProviderTransactionId = paymentInfo.TransactionID;
checkoutTransaction.Referrer = context.Request.ServerVariables["HTTP_REFERER"];
checkoutTransaction.PaymentGatewayId = this.PaymentGatewayId;
checkoutTransaction.RemoteIP = context.Request.ServerVariables["REMOTE_ADDR"];
checkoutPayment.Transactions.Add(checkoutTransaction);
//FIND THE WAITING FOR IPN TRANSACTION AND REMOVE
int i = checkoutPayment.Transactions.Count - 1;
while (i >= 0)
{
if (string.IsNullOrEmpty(checkoutPayment.Transactions[i].AuthorizationCode))
{
checkoutPayment.Transactions.DeleteAt(i);
}
i--;
}
}
else
{
//SOME SORT OF ERROR ATTEMPTING CHECKOUT
responseErrors = expressCheckoutResponse.Errors;
}
}
else
{
//NO RESPONSE, GENERATE CUSTOM ERROR
responseErrors = new ErrorType[1];
ErrorType customError = new ErrorType();
customError.ErrorCode = "NORESP";
customError.ShortMessage = "No Response From Server";
customError.LongMessage = "The PayPal service is unavailable at this time.";
responseErrors[0] = customError;
}
trace.Write(traceCategory, "Do Request Done");
//ERRORS IN RESPONSE?
if ((responseErrors != null) && (responseErrors.Length > 0))
{
//CREATE THE PAYPAL TRANSACTION RECORD FOR ERROR
Transaction checkoutTransaction = new Transaction();
finalPaymentStatus = PaymentStatus.Unprocessed;
checkoutTransaction.TransactionStatus = TransactionStatus.Failed;
checkoutTransaction.Amount = curOrderTotal;
checkoutTransaction.AuthorizationCode = string.Empty;
checkoutTransaction.Referrer = context.Request.ServerVariables["HTTP_REFERER"];
checkoutTransaction.PaymentGatewayId = this.PaymentGatewayId;
checkoutTransaction.RemoteIP = context.Request.ServerVariables["REMOTE_ADDR"];
checkoutTransaction.ResponseCode = responseErrors[0].ShortMessage;
checkoutTransaction.ResponseMessage = responseErrors[0].LongMessage;
checkoutPayment.Transactions.Add(checkoutTransaction);
}
//MAKE SURE PAYMENT STATUS IS CORRECT
checkoutPayment.ReferenceNumber = paypalSession.Payer;
checkoutPayment.PaymentStatus = finalPaymentStatus;
if (isPendingeCheck)
{
checkoutPayment.PaymentStatusReason = "echeck";
}
//RECALCULATE THE ORDER STATUS (BUG 6384) AND TRIGGER PAYMENT EVENTS (BUG 8650)
order.Save(true, true);
//CLEAR THE TOKENS SET IN SESSION
paypalSession.Delete();
return(new ExpressCheckoutResult(orderId, string.Empty, responseErrors));
}
){kind=link}