public async Task <IActionResult> Post([FromBody] TransactionCreationModelView transaction)
{
// get current user
var userId = HttpContext.User?.FindFirst(JwtRegisteredClaimNames.Jti)?.Value; // get userId from token
if (userId == null)
{
return(StatusCode(401, "Invalid user"));
}
var userFrom = await _userManager.FindByIdAsync(userId);
if (transaction.Amount > userFrom.Balance)
{
return(StatusCode(400, "Balance exceeded"));
}
var userTo = await _userManager.FindByNameAsync(transaction.Name);
if (userTo == null)
{
return(StatusCode(400, "User not found"));
}
userFrom.Balance -= transaction.Amount;
userTo.Balance += transaction.Amount;
var newTransactionEntry = new Models.Transaction {
Date = DateTime.Now,
UserFromId = userFrom.Id,
UserToId = userTo.Id,
Amount = transaction.Amount,
NewUserFromBalance = userFrom.Balance,
NewUserToBalance = userTo.Balance
};
_context.Transactions.Add(newTransactionEntry);
_context.SaveChanges();
var transactionResp = new TransactionCreationResultView {
Id = newTransactionEntry.Id,
Date = newTransactionEntry.Date,
Username = userTo.UserName,
Amount = transaction.Amount,
Balance = userFrom.Balance
};
return(Ok(new { transaction = transactionResp }));
}
public ActionResult CancelPaymentWithPaypal()
{
var guid = Request.Params["guid"];
string payment_id = Session[guid] as string;
Models.Transaction t = db.Transactions.Where(x => x.paypal_transaction_id == payment_id).FirstOrDefault();
if (t == null || Session["User"] == null)
{
return(new HttpStatusCodeResult(HttpStatusCode.BadRequest));
}
else if (t.account_id != Convert.ToInt32(Session["User"].ToString()))
{
return(new HttpStatusCodeResult(HttpStatusCode.BadRequest));
}
else
{
t.transaction_status_id = 3;
Session["Cart"] = new List <CartItemViewModel>();
db.SaveChanges();
return(RedirectToAction("Store", "Application"));
}
}
public ActionResult PaymentWithPaypal()
{
if (Session["User"] != null)
{
if (!IsCartEmpty())
{
//getting the apiContext as earlier
APIContext apiContext = Configuration.GetAPIContext();
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?";
string cancelURI = Request.Url.Scheme + "://" + Request.Url.Authority +
"/Paypal/CancelPaymentWithPayPal?";
//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
Models.Transaction t = new Models.Transaction();
t.account_id = Convert.ToInt32(Session["User"]);
t.transaction_status_id = 1;
var createdPayment = this.CreatePayment(apiContext, baseURI + "guid=" + guid, cancelURI + "guid=" + guid, t);
t.paypal_transaction_id = createdPayment.id;
t.date_of_transaction = DateTime.Now;
db.Transactions.Add(t);
db.SaveChanges();
//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);
string trans_id = executedPayment.id;
Models.Transaction t = db.Transactions.Where(x => x.paypal_transaction_id == trans_id).FirstOrDefault();
if (t == null)
{
return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
}
else if (t.account_id != Convert.ToInt32(Session["User"].ToString()))
{
return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
}
else
{
if (executedPayment.state.ToLower() == "approved")
{
t.transaction_status_id = 2;
Session["Cart"] = new List<CartItemViewModel>();
db.SaveChanges();
return RedirectToAction("Store", "Application");
}
else
{
return RedirectToAction("Store", "Application");
}
}
}
}
else
{
return RedirectToAction("Store", "Application");
}
}
else
{
return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
}
}
public ActionResult PaymentWithPaypal()
{
if (Session["User"] != null)
{
if (!IsCartEmpty())
{
//getting the apiContext as earlier
APIContext apiContext = Configuration.GetAPIContext();
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?";
string cancelURI = Request.Url.Scheme + "://" + Request.Url.Authority +
"/Paypal/CancelPaymentWithPayPal?";
//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
Models.Transaction t = new Models.Transaction();
t.account_id = Convert.ToInt32(Session["User"]);
t.transaction_status_id = 1;
var createdPayment = this.CreatePayment(apiContext, baseURI + "guid=" + guid, cancelURI + "guid=" + guid, t);
t.paypal_transaction_id = createdPayment.id;
t.date_of_transaction = DateTime.Now;
db.Transactions.Add(t);
db.SaveChanges();
//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);
string trans_id = executedPayment.id;
Models.Transaction t = db.Transactions.Where(x => x.paypal_transaction_id == trans_id).FirstOrDefault();
if (t == null)
{
return(new HttpStatusCodeResult(HttpStatusCode.BadRequest));
}
else if (t.account_id != Convert.ToInt32(Session["User"].ToString()))
{
return(new HttpStatusCodeResult(HttpStatusCode.BadRequest));
}
else
{
if (executedPayment.state.ToLower() == "approved")
{
t.transaction_status_id = 2;
Session["Cart"] = new List <CartItemViewModel>();
db.SaveChanges();
return(RedirectToAction("Store", "Application"));
}
else
{
return(RedirectToAction("Store", "Application"));
}
}
}
}
else
{
return(RedirectToAction("Store", "Application"));
}
}
else
{
return(new HttpStatusCodeResult(HttpStatusCode.BadRequest));
}
}
private Payment CreatePayment(APIContext apiContext, string returnUrl, string cancelUrl, Models.Transaction t)
{
//similar to credit card create itemlist and add item objects to it
var itemList = new ItemList()
{
items = new List <PayPal.Api.Item>()
};
decimal tax = 0, shipping = 0;
decimal t_subtotes = 0;
List <CartItemViewModel> l_civm = (List <CartItemViewModel>)Session["Cart"];
/*
* Insert Transaction To Database; Set Status to 1 (NotPaid)
* Make sure to create TransactionItems
*/
foreach (CartItemViewModel civm in l_civm)
{
TransactionItem ti = new TransactionItem();
ti.transaction_id = t.id;
ti.item_name = civm.name;
ti.item_price = civm.price;
ti.quantity = civm.quantity;
db.TransactionItems.Add(ti);
itemList.items.Add(new PayPal.Api.Item()
{
name = civm.name,
currency = "USD",
price = Math.Round(civm.price, 2).ToString(),
quantity = civm.quantity.ToString(),
sku = civm.id.ToString()
});
t_subtotes += civm.price * civm.quantity;
// similar as we did for credit card, do here and create details object
}
var totes = tax + shipping + t_subtotes;
var payer = new Payer()
{
payment_method = "paypal"
};
// Configure Redirect Urls here with RedirectUrls object
var redirUrls = new RedirectUrls()
{
cancel_url = cancelUrl,
return_url = returnUrl
};
var details = new Details()
{
tax = Math.Round(tax, 2).ToString(),
shipping = Math.Round(shipping, 2).ToString(),
subtotal = Math.Round(t_subtotes, 2).ToString()
};
// similar as we did for credit card, do here and create amount object
var amount = new Amount()
{
currency = "USD",
total = Math.Round(totes, 2).ToString(), // Total must be equal to sum of shipping, tax and subtotal.
details = details
};
var transactionList = new List <PayPal.Api.Transaction>();
transactionList.Add(new PayPal.Api.Transaction()
{
description = "Transaction description.",
invoice_number = Session["User"].ToString() + "-" + DateTime.Now.ToString("yyyyMMddHHmmss"),
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));
}