public ActionResult PaymentWithPaypal(string Cancel = null)
{
Order orderToCreate = Session["orderToCreate"] as Order;
//getting the apiContext
APIContext apiContext = PaypalConfiguration.GetAPIContext();
try
{
//A resource representing a Payer that funds a payment Payment Method as paypal
//Payer Id will be returned when payment proceeds or click to pay
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.
string baseURI = Request.Url.Scheme + "://" + Request.Url.Authority + "/Paypal/PaymentWithPayPal?";
//here we are generating guid for storing the paymentID received in session
//which will be 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
var createdPayment = this.CreatePayment(apiContext, baseURI + "guid=" + guid, orderToCreate);
//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 function exectues after receving all parameters for the payment
var guid = Request.Params["guid"];
var executedPayment = ExecutePayment(apiContext, payerId, Session[guid] as string);
//If executed payment failed then we will show payment failure message to user
if (executedPayment.state.ToLower() != "approved")
{
return(RedirectToAction("Index", "Home"));
}
}
}
catch (Exception ex)
{
return(RedirectToAction("Index", "Home"));
}
//on successful payment, show success page to user.
// TODO: Create order for user
if (orderToCreate != null)
{
db.Orders.Add(orderToCreate);
db.SaveChanges();
var user = Session["user"] as Account;
var usr = db.Accounts.Find(user.AccountId);
var pack = db.Packs.Where(p => p.PackId == (int)orderToCreate.TokenPack).FirstOrDefault();
usr.Tokens = usr.Tokens + orderToCreate.Quantity * pack.Amount;
usr.ConfirmPassword = usr.Password;
db.Entry(usr).State = EntityState.Modified;
db.SaveChanges();
Session["user"] = usr;
Session["orderToCreate"] = null;
}
return(RedirectToAction("Details", "Accounts"));
}
public Payment CreatePayment(APIContext apiContext, string redirectUrl, Order orderToCreate)
{
//create itemlist and add item objects to it
var itemList = new ItemList()
{
items = new List <Item>()
};
var pack = db.Packs.Where(p => p.PackId == (int)orderToCreate.TokenPack).FirstOrDefault();
string name = "";
if (orderToCreate.TokenPack == TokenPack.S)
{
name = "Silver Package";
}
if (orderToCreate.TokenPack == TokenPack.G)
{
name = "Gold Package";
}
if (orderToCreate.TokenPack == TokenPack.P)
{
name = "Platinum Package";
}
//Adding Item Details like name, currency, price etc
itemList.items.Add(new Item()
{
name = name,
currency = "USD",
price = orderToCreate.Price.ToString(),
quantity = "1",
sku = "sku"
});
var payer = new Payer()
{
payment_method = "paypal"
};
// Configure Redirect Urls here with RedirectUrls object
var redirUrls = new RedirectUrls()
{
cancel_url = redirectUrl + "&Cancel=true",
return_url = redirectUrl
};
// Adding Tax, shipping and Subtotal details
var details = new Details()
{
tax = "1",
shipping = "1",
subtotal = orderToCreate.Price.ToString(),
shipping_discount = "-1"
};
//Final amount with details
string totalPrice = (orderToCreate.Price + 1 + 1 - 1).ToString();
var amount = new Amount()
{
currency = "USD",
total = totalPrice, // Total must be equal to sum of tax, shipping and subtotal.
details = details
};
var transactionList = new List <Transaction>();
// Adding description about the transaction
transactionList.Add(new Transaction()
{
description = "Transaction description",
invoice_number = Convert.ToString((new Random()).Next(100000)),
amount = amount,
item_list = itemList
});
this.payment = new Payment()
{
intent = "sale",
payer = payer,
transactions = transactionList,
redirect_urls = redirUrls
};
// Create a payment using a APIContext
return(this.payment.Create(apiContext));
}
