){kind=link}
public GetExpressCheckoutResult GetExpressCheckout()
{
HttpContext context = HttpContext.Current;
ExpressCheckoutSession existingSession = ExpressCheckoutSession.Current;
if (existingSession == null)
{
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 GetExpressCheckoutResult(null, customErrorList));
}
context.Trace.Write("Detected PayPal Token:" + existingSession.Token);
context.Trace.Write("Token Expiration:" + existingSession.TokenExpiration.ToLongDateString());
GetExpressCheckoutDetailsRequestType expressCheckoutRequest = new GetExpressCheckoutDetailsRequestType();
expressCheckoutRequest.Token = existingSession.Token;
expressCheckoutRequest.Version = "1.0";
//EXECUTE REQUEST
GetExpressCheckoutDetailsResponseType expressCheckoutResponse;
expressCheckoutResponse = (GetExpressCheckoutDetailsResponseType)SoapCall("GetExpressCheckoutDetails", expressCheckoutRequest);
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 GetExpressCheckoutResult(null, customErrorList));
}
//IF ERRORS ARE IN RESPONSE, RETURN THEM AND EXIT PROCESS
if (expressCheckoutResponse.Errors != null)
{
return(new GetExpressCheckoutResult(null, expressCheckoutResponse.Errors));
}
//GET THE DETAILS OF THE REQUEST
GetExpressCheckoutDetailsResponseDetailsType expressCheckoutDetails;
expressCheckoutDetails = expressCheckoutResponse.GetExpressCheckoutDetailsResponseDetails;
//MAKE SURE CUSTOMER IDS MATCH
User currentUser = Token.Instance.User;
if (expressCheckoutDetails.Custom != ("UID" + currentUser.UserId.ToString()))
{
ErrorType[] customErrorList = new ErrorType[1];
ErrorType customError = new ErrorType();
customError.ErrorCode = "USER";
customError.ShortMessage = "User Mismatch";
customError.LongMessage = "The PayPal basket did not have the expected user context.";
customErrorList[0] = customError;
Logger.Warn("Error in PayPal GetExpressCheckout. User ID detected in PayPal response: " + expressCheckoutDetails.Custom + ", Customer User ID: " + currentUser.UserId.ToString());
return(new GetExpressCheckoutResult(null, customErrorList));
}
//CHECK WHETHER AN EXISTING USER IS ASSOCIATED WITH THE RETURNED PAYPAL ID
//IF THE CURRENT USER DOES NOT MATCH, LOG IN THE PAYPAL USER ACCOUNT
string paypalEmail = expressCheckoutDetails.PayerInfo.Payer;
string paypalPayerID = expressCheckoutDetails.PayerInfo.PayerID;
//PAYER ID IS SUPPOSED TO BE UNIQUE REGARDLESS OF EMAIL ADDRESS, LOOK FOR ASSOCIATED ACCT
User paypalUser = UserDataSource.LoadForPayPalId(paypalPayerID);
//IF NOT FOUND, SEE IF AN ACCOUNT EXISTS WITH THAT EMAIL AS USERNAME
if (paypalUser == null)
{
paypalUser = UserDataSource.LoadForUserName(paypalEmail);
}
if (paypalUser != null)
{
//WE FOUND AN ACCOUNT FOR THIS PAYPAL USER
context.Trace.Write(this.GetType().ToString(), "PAYPAL USER FOUND IN DATABASE");
if (currentUser.UserId != paypalUser.UserId)
{
//THE PAYPAL USER IS NOT THE CURRENT USER CONTEXT, SO TRANSFER THE BASKET
context.Trace.Write(this.GetType().ToString(), "MOVE BASKET TO " + paypalUser.UserName);
Basket.Transfer(currentUser.UserId, paypalUser.UserId, true);
//REMOVE PAYPAL EXPRESS SESSION FROM OLD USER SESSION
ExpressCheckoutSession.Delete(currentUser);
}
}
else
{
//WE DID NOT FIND AN ACCOUNT
context.Trace.Write(this.GetType().ToString(), "PAYPAL USER NOT FOUND IN DATABASE");
if (currentUser.IsAnonymous)
{
//CURRENT USER IS ANON, REGISTER A NEW USER ACCOUNT
context.Trace.Write(this.GetType().ToString(), "REGISTERING " + paypalEmail);
MembershipCreateStatus status;
paypalUser = UserDataSource.CreateUser(paypalEmail, paypalEmail, StringHelper.RandomString(8), string.Empty, string.Empty, true, 0, out status);
paypalUser.PayPalId = paypalPayerID;
paypalUser.Save();
Basket.Transfer(currentUser.UserId, paypalUser.UserId, true);
//REMOVE PAYPAL EXPRESS SESSION FROM OLD USER SESSION
ExpressCheckoutSession.Delete(currentUser);
}
else
{
//UPDATE THE PAYPAL ID OF THE CURRENTLY AUTHENTICATED USER
context.Trace.Write(this.GetType().ToString(), "ASSIGNING CURRENT USER TO " + paypalEmail);
paypalUser = currentUser;
paypalUser.PayPalId = paypalPayerID;
paypalUser.Save();
}
}
//PAYPAL HAS AUTHENTICATED THE USER
FormsAuthentication.SetAuthCookie(paypalUser.UserName, false);
//UPDATE THE PRIMARY ADDRESS INFORMATION FOR THE USER
Address billingAddress = paypalUser.PrimaryAddress;
billingAddress.FirstName = expressCheckoutDetails.PayerInfo.PayerName.FirstName;
billingAddress.LastName = expressCheckoutDetails.PayerInfo.PayerName.LastName;
billingAddress.Company = expressCheckoutDetails.PayerInfo.PayerBusiness;
billingAddress.Address1 = expressCheckoutDetails.PayerInfo.Address.Street1;
billingAddress.Address2 = expressCheckoutDetails.PayerInfo.Address.Street2;
billingAddress.City = expressCheckoutDetails.PayerInfo.Address.CityName;
billingAddress.Province = expressCheckoutDetails.PayerInfo.Address.StateOrProvince;
billingAddress.PostalCode = expressCheckoutDetails.PayerInfo.Address.PostalCode;
billingAddress.CountryCode = expressCheckoutDetails.PayerInfo.Address.Country.ToString();
if (!string.IsNullOrEmpty(expressCheckoutDetails.ContactPhone))
{
billingAddress.Phone = expressCheckoutDetails.ContactPhone;
}
billingAddress.Email = expressCheckoutDetails.PayerInfo.Payer;
billingAddress.Residence = (!string.IsNullOrEmpty(billingAddress.Company));
paypalUser.Save();
//UPDATE THE SHIPPING ADDRESS IN THE BASKET
Basket basket = paypalUser.Basket;
basket.Package();
foreach (BasketShipment shipment in basket.Shipments)
{
shipment.AddressId = billingAddress.AddressId;
}
basket.Save();
//PUT PAYPAL DETAILS INTO SESSION
context.Trace.Write(this.GetType().ToString(), "Saving ExpressCheckoutSession");
existingSession.Token = expressCheckoutDetails.Token;
existingSession.TokenExpiration = DateTime.UtcNow.AddHours(3);
existingSession.PayerID = paypalPayerID;
existingSession.Payer = expressCheckoutDetails.PayerInfo.Payer;
existingSession.Save(paypalUser);
context.Trace.Write("Saved PayPal Token:" + existingSession.Token);
context.Trace.Write("Token Expiration:" + existingSession.TokenExpiration.ToLongDateString());
return(new GetExpressCheckoutResult(paypalUser, null));
}