public int?GetOrderIdForTransactionToken(string payPalToken)
{
PaymentTransaction paymentTransaction = PaymentTransaction.GetMostRecentByTransactionId(payPalToken);
if (paymentTransaction != null)
{
return(paymentTransaction.OrderId);
}
return(null);
}
public override PaymentStatusName ProcessOffsitePaymentResponse(Order order, HttpRequest request)
{
//---- Need to validate the incoming request with PayPal so we know it's authentic
Dictionary <string, string> requestParams = HttpHelper.DecodeParamsFromHttpRequest(request);
string requestDataString = HttpHelper.EncodeVarsForHttpPostString(requestParams);
// send our modified request back to PayPal for validation
string postData = requestDataString + "&cmd=_notify-validate";
HttpWebResponse payPalResponse = HttpHelper.HttpPost(ProviderUrl, postData);
string payPalResponseString = HttpHelper.WebResponseToString(payPalResponse);
// Parse response into some variables
NameValueCollection fields = request.Params;
string paymentStatus = fields["payment_status"];
string transactionId = fields["txn_id"];
string receiverEmail = fields["receiver_email"];
string businessEmail = fields["business"];
int? orderId = WA.Parser.ToInt(fields["custom"]);
decimal?paymentAmount = WA.Parser.ToDecimal(fields["mc_gross"]); // amount before PayPal fee is subtracted
decimal?payPalTransactionFee = WA.Parser.ToDecimal(fields["mc_fee"]);
decimal shippingAmount = WA.Parser.ToDecimal(fields["mc_shipping"]).GetValueOrDefault(0);
decimal handlingAmount = WA.Parser.ToDecimal(fields["mc_handling"]).GetValueOrDefault(0);
decimal taxAmount = WA.Parser.ToDecimal(fields["tax"]).GetValueOrDefault(0);
string firstName = fields["first_name"] ?? "";
string lastName = fields["last_name"] ?? "";
string email = fields["payer_email"] ?? "";
string phone = fields["contact_phone"] ?? "";
string shipName = fields["address_name"] ?? "";
string shipAddress1 = fields["address_street"] ?? "";
string shipCity = fields["address_city"] ?? "";
string shipRegion = fields["address_state"] ?? "";
string shipPostalCode = fields["address_zip"] ?? "";
string shipCountryCode = fields["address_country_code"] ?? "";
PaymentStatusName paymentStatusName = order.PaymentStatus;
bool isValidReceiverEmail = (receiverEmail == EmailAddress) || (businessEmail == EmailAddress);
PaymentTransaction newTransaction = new PaymentTransaction();
newTransaction.OrderId = orderId;
newTransaction.PaymentProviderId = this.ProviderId;
newTransaction.GatewayUrl = ProviderUrl;
newTransaction.GatewayTransactionId = transactionId;
newTransaction.GatewayResponse = paymentStatus;
newTransaction.GatewayDebugResponse = requestDataString;
newTransaction.Amount = paymentAmount;
if (payPalResponseString != "VERIFIED")
{
newTransaction.GatewayError = "Invalid/Unknown response or response could not be validated as authentic";
newTransaction.Save();
return(PaymentStatusName.ProviderError);
}
if (!isValidReceiverEmail)
{
newTransaction.GatewayError = "Receiver Email does not match PayPal Account";
newTransaction.Save();
return(PaymentStatusName.ProviderError);
}
//Order pendingOrder = Order.GetOrder(orderId);
if (payPalResponseString == "VERIFIED")
{
// check if we have already processed this transaction successfully
// we might already have processed the IPN callback, and the user clicks "return to store"
// which would trigger another transaction
PaymentTransaction priorTransaction = PaymentTransaction.GetMostRecentByTransactionId(transactionId);
if (priorTransaction != null && priorTransaction.OrderId == orderId)
{
// we have a duplicate transaction, we should NOT process this new one
return(order.PaymentStatus);
}
//check the payment_status is Completed
bool paymentStatusComplete = (paymentStatus.ToLower() == "completed");
if (paymentAmount.GetValueOrDefault(-1) < order.Total.Value)
{
newTransaction.GatewayError = string.Format("Payment amount does not match Order Total. Order total {0:N2}. Payment amount {1:N2}", order.Total, paymentAmount);
newTransaction.Save();
return(PaymentStatusName.ProviderError);
}
//if (paymentStatusComplete && paymentAmountMatches && receiverEmailMatches)
if (paymentStatusComplete)
{
newTransaction.GatewayResponse = "Verified Payment Completed";
if (request.RawUrl.Contains("PayPalIpnHandler.aspx"))
{
newTransaction.GatewayResponse += " via IPN";
}
else if (request.RawUrl.Contains("Checkout-Complete.aspx"))
{
newTransaction.GatewayResponse += " via return button from PayPal";
}
paymentStatusName = PaymentStatusName.Completed;
//---- Update the Order
order.CustomerFirstName = firstName;
order.CustomerLastName = lastName;
order.CustomerEmail = email;
order.ShipRecipientName = shipName;
order.ShipAddress1 = shipAddress1;
//order.ShipAddress2 = shipAddress2;
order.ShipCity = shipCity;
order.ShipRegion = shipRegion;
order.ShipPostalCode = shipPostalCode;
order.ShipCountryCode = shipCountryCode;
order.ShipTelephone = phone;
order.BillAddress1 = shipAddress1;
//order.BillAddress2 = shipAddress2;
order.BillCity = shipCity;
order.BillRegion = shipRegion;
order.BillPostalCode = shipPostalCode;
order.BillCountryCode = shipCountryCode;
order.BillTelephone = phone;
// PayPal 'paymentAmount' is the total amount paid by customer
// so we need to do some basic math to get the other order amounts...
order.ShippingAmount = shippingAmount + handlingAmount;
order.TaxAmount = taxAmount;
order.SubTotal = paymentAmount - (order.ShippingAmount + order.TaxAmount);
order.Total = paymentAmount;
order.Save();
}
newTransaction.Save();
}
return(paymentStatusName);
}
