public ActionResult PaymentWithPaypal()
{
if (!SessionManager.userIsLoggedIn())
{
return(new HttpStatusCodeResult(403));
}
BL.User user = (BL.User)System.Web.HttpContext.Current.Session["user"];
if (user == null)
{
ViewBag.Status = false;
ViewBag.Message = "User is not logged in";
return(View("Payment"));
}
BoatRentModel boatRentModel = (BoatRentModel)System.Web.HttpContext.Current.Session["boatRental"];
GroupTripModel groupTripModel = (GroupTripModel)System.Web.HttpContext.Current.Session["groupTrip"];
if (boatRentModel == null && groupTripModel == null)
{
ViewBag.Status = false;
ViewBag.Message = "Neither the BoatRentModel nor the GroupTripModel exists";
return(View("Payment"));
}
//getting the apiContext as earlier
APIContext apiContext = PaypalConfiguration.GetAPIContext();
try {
string payerId = Request.Params["PayerID"];
if (string.IsNullOrEmpty(payerId))
{
//this section will be executed first because PayerID doesn't exist
//it is returned by the create function call of the payment class
// Creating a payment
// baseURL is the url on which paypal sendsback the data.
// So we have provided URL of this controller only
string baseURI = Request.Url.Scheme + "://" + Request.Url.Authority +
"/PayPal/PaymentWithPayPal?";
//guid we are generating for storing the paymentID received in session
//after calling the create function and it is used in the payment execution
var guid = Convert.ToString((new Random()).Next(100000));
//CreatePayment function gives us the payment approval url
//on which payer is redirected for paypal account payment
Payment createdPayment = null;
if (boatRentModel != null)
{
createdPayment = this.CreateBoatRentalPayment(apiContext, baseURI + "guid=" + guid, boatRentModel);
}
else if (groupTripModel != null)
{
createdPayment = this.CreateGroupTripPayment(apiContext, baseURI + "guid=" + guid, groupTripModel);
}
//get links returned from paypal in response to Create function call
var links = createdPayment.links.GetEnumerator();
string paypalRedirectUrl = null;
while (links.MoveNext())
{
Links lnk = links.Current;
if (lnk.rel.ToLower().Trim().Equals("approval_url"))
{
//saving the payapalredirect URL to which user will be redirected for payment
paypalRedirectUrl = lnk.href;
}
}
// saving the paymentID in the key guid
Session.Add(guid, createdPayment.id);
return(Redirect(paypalRedirectUrl));
}
else
{
// This section is executed when we have received all the payments parameters
// from the previous call to the function Create
// Executing a payment
var guid = Request.Params["guid"];
var executedPayment = ExecutePayment(apiContext, payerId, Session[guid] as string);
if (executedPayment.state.ToLower() != "approved")
{
ViewBag.Status = false;
ViewBag.Message = "Payment with PayPal is not approved.";
return(View("Payment"));
}
if (boatRentModel != null)
{
BL.Location location = MainClass.Instance.getLocations().Find(v => v.id == boatRentModel.locationId);
if (location == null)
{
ViewBag.Status = false;
ViewBag.Message = "Location could not be found";
return(View("Payment"));
}
BL.BoatRental br = location.rentBoat(boatRentModel.boat, boatRentModel.startTime, boatRentModel.endTime, boatRentModel.numPersons);
if (br == null)
{
ViewBag.Status = false;
ViewBag.Message = "Boat could not be rented";
return(View("Payment"));
}
if (MainClass.Instance.orderBoatRental(br, PaymentType.PAYPAL, user.userAddress, user) == null)
{
ViewBag.Status = false;
ViewBag.Message = "Boat could not be rented";
return(View("Payment"));
}
System.Web.HttpContext.Current.Session.Remove("boatRental");
}
else if (groupTripModel != null)
{
if (MainClass.Instance.orderGroupTrip(groupTripModel.finalGroupTrip, PaymentType.PAYPAL, user.userAddress, user) == null)
{
ViewBag.Status = false;
ViewBag.Message = "Group trip could not be ordered";
return(View("Payment"));
}
System.Web.HttpContext.Current.Session.Remove("groupTrip");
}
}
}
catch (Exception e) {
ViewBag.Status = false;
ViewBag.Message = e.Message;
return(View("Payment"));
}
ViewBag.Status = true;
ViewBag.Message = "Payment with PayPal was successful.";
return(View("Payment"));
}