/// <summary>
/// Starts a PayPal payment and returns a redirect result to PayPal (or payment info page if an error occurs)
/// </summary>
/// <param name="viewModel"></param>
/// <returns></returns>
protected ActionResult Payment_PayPalStartPayment(CheckoutPaymentInfoViewModel viewModel, WebFormResponse webFormResponse)
{
StoreFrontConfiguration storeFrontConfig = CurrentStoreFrontConfigOrThrow;
Cart cart = storeFrontConfig.StoreFront.GetCart(Session.SessionID, CurrentUserProfileOrNull);
Uri returnUri = new Uri(Url.Action("PayPalAccountConfirmed", null, null, Request.Url.Scheme));
Uri cancelUri = new Uri(Url.Action("PayPalCanceled", null, null, Request.Url.Scheme));
PayPalPaymentClient paypalClient = new PayPalPaymentClient();
PayPalPaymentData response;
try
{
response = paypalClient.StartPayPalPayment(storeFrontConfig, cart, returnUri, cancelUri);
}
catch(PayPalExceptionOAuthFailed exOAuth)
{
string message = "Sorry, this store's configuration for PayPal OAuth is not operational. Please contact us for other payment options."
+ (exOAuth.IsSandbox ? "\nError in Sandbox Config." : "\nError in Live Config");
AddUserMessage("PayPal Error", message, UserMessageType.Danger);
if (CurrentUserProfileOrNull != null && CurrentUserProfileOrThrow.AspNetIdentityUserIsInRoleSystemAdmin())
{
string adminMessage = exOAuth.ToString()
+ "\n\nHTTP Response:\n" + exOAuth.ResponseString
+ "\n\nHTTP Headers:\n" + exOAuth.ResponseHeaders;
AddUserMessage("PayPal Error (admin info)", "Error " + adminMessage, UserMessageType.Danger);
}
return RedirectToAction("PaymentInfo");
}
catch(PayPalExceptionCreatePaymentFailed exPaymentFailed)
{
string message = "Sorry, there was an error sending your order to PayPal for payment. Please contact us for other payment options."
+ (exPaymentFailed.IsSandbox ? "\nError in Sandbox." : "\nError in Live Site.");
AddUserMessage("PayPal Error", message, UserMessageType.Danger);
if (CurrentUserProfileOrNull != null && CurrentUserProfileOrThrow.AspNetIdentityUserIsInRoleSystemAdmin())
{
string adminMessage = exPaymentFailed.ToString()
+ "\n\nHTTP Response:\n" + exPaymentFailed.ResponseString
+ "\n\nHTTP Headers:\n" + exPaymentFailed.ResponseHeaders;
AddUserMessage("PayPal Error (admin info)", "Error " + adminMessage, UserMessageType.Danger);
}
return RedirectToAction("PaymentInfo");
}
catch (Exception ex)
{
string message = "Sorry, there was an error starting starting your order with PayPal. Please contact us for other payment options.";
AddUserMessage("PayPal Error", message, UserMessageType.Danger);
if (CurrentUserProfileOrNull != null && CurrentUserProfileOrThrow.AspNetIdentityUserIsInRoleSystemAdmin())
{
string adminMessage = "Exception: " + ex.ToString();
AddUserMessage("PayPal Error (admin info)", "Error " + adminMessage, UserMessageType.Danger);
}
return RedirectToAction("PaymentInfo");
}
CartPaymentInfo cartPaymentInfo = cart.CartPaymentInfo;
if (cartPaymentInfo == null)
{
cartPaymentInfo = GStoreDb.CartPaymentInfos.Create();
cartPaymentInfo.SetFromPayPalResponse(cart, response);
if (webFormResponse != null)
{
cartPaymentInfo.WebFormResponseId = webFormResponse.WebFormResponseId;
}
cartPaymentInfo = GStoreDb.CartPaymentInfos.Add(cartPaymentInfo);
}
else
{
cartPaymentInfo.SetFromPayPalResponse(cart, response);
if (webFormResponse != null)
{
cartPaymentInfo.WebFormResponseId = webFormResponse.WebFormResponseId;
}
cartPaymentInfo = GStoreDb.CartPaymentInfos.Update(cartPaymentInfo);
}
GStoreDb.SaveChanges();
cart.CartPaymentInfoId = cartPaymentInfo.CartPaymentInfoId;
cart.StatusPaymentInfoConfirmed = false;
cart = GStoreDb.Carts.Update(cart);
GStoreDb.SaveChanges();
PayPalLinkData confirmLink = response.links.Where(l => l.rel == "approval_url").SingleOrDefault();
if (string.IsNullOrEmpty(confirmLink.href))
{
string message = "Sorry, there was an error getting your order info from PayPal. Please contact us for other payment options.";
AddUserMessage("PayPal Error", message, UserMessageType.Danger);
if (CurrentUserProfileOrNull != null && CurrentUserProfileOrThrow.AspNetIdentityUserIsInRoleSystemAdmin())
{
string adminMessage = "PayPal Response parse error. Cannot find link with method: approval_url";
AddUserMessage("PayPal Error (admin info)", "Error " + adminMessage, UserMessageType.Danger);
}
return RedirectToAction("PaymentInfo");
}
return Redirect(confirmLink.href);
}
/// <summary>
/// Processes paypal payment on an order if it has not been done already
/// Saves Payment to cart, does not mark cart status
/// Exceptions thrown if cart.StatusPlacedOrder = true or cart.OrderId.HasValue
/// Otherwise, payment will be processed and if failed, a record with failure code will be returned
/// </summary>
/// <returns></returns>
public static Payment ProcessPayPalPaymentForOrderAndSavePayment(this Cart cart, StoreFrontConfiguration storeFrontConfig, IGstoreDb db)
{
if (storeFrontConfig == null)
{
throw new ArgumentNullException("storeFrontConfig");
}
if (cart == null)
{
throw new ArgumentNullException("cart");
}
if (!cart.StatusPaymentInfoConfirmed)
{
throw new ApplicationException("cart.StatusPaymentInfoConfirmed = false. Be sure cart is updated with payment info status = true when payment is selected.");
}
if (cart.CartPaymentInfo == null)
{
throw new ArgumentNullException("cart.PaymentInfo");
}
if (cart.OrderId.HasValue)
{
throw new ApplicationException("cart.OrderId.HasValue is set. This cart already has been processed and converted into an order. Order Id: " + cart.OrderId.Value);
}
if (cart.StatusPlacedOrder)
{
throw new ApplicationException("cart.StatusPlacedOrder = true. This cart already has been processed and converted into an order.");
}
if (cart.CartPaymentInfo.PayPalPaymentId.ToLower() != cart.CartPaymentInfo.PayPalReturnPaymentId.ToLower())
{
throw new ApplicationException("PayPal Payment id mismatch. PaymentId: " + cart.CartPaymentInfo.PayPalPaymentId + " ReturnPaymentId: " + cart.CartPaymentInfo.PayPalReturnPaymentId);
}
if (cart.CartPaymentInfo.PaymentSource != Models.BaseClasses.GStorePaymentSourceEnum.PayPal)
{
throw new ApplicationException("Payment Source not supported: " + cart.CartPaymentInfo.PaymentSource.ToString());
}
Payment payment = db.Payments.Create();
payment.SetDefaultsForNew(storeFrontConfig);
payment.PaymentSource = cart.CartPaymentInfo.PaymentSource;
payment.ProcessDateTimeUtc = DateTime.UtcNow;
payment.CartId = cart.CartId;
PayPalPaymentData response = new PayPal.Models.PayPalPaymentData();
PayPal.PayPalPaymentClient paypalClient = new PayPal.PayPalPaymentClient();
try
{
response = paypalClient.ExecutePayPalPayment(storeFrontConfig, cart);
if (response.transactions == null || response.transactions.Count() == 0)
{
throw new ApplicationException("PayPal transactions missing from response. JSON: " + response.Json);
}
payment.SetFromPayPalPayment(response);
payment.PaymentFailed = false;
payment.FailureException = null;
payment.IsProcessed = true;
}
catch (Exceptions.PayPalExceptionOAuthFailed exOAuth)
{
payment.PaymentFailed = true;
payment.FailureException = exOAuth.ToString();
payment.Json = response.Json;
payment.AmountPaid = 0M;
payment.TransactionId = null;
payment.IsProcessed = false;
}
catch (Exceptions.PayPalExceptionExecutePaymentFailed exPaymentFailed)
{
payment.PaymentFailed = true;
payment.FailureException = exPaymentFailed.ToString();
payment.Json = response.Json;
payment.AmountPaid = 0M;
payment.TransactionId = null;
payment.IsProcessed = false;
}
catch (Exception ex)
{
payment.PaymentFailed = true;
payment.FailureException = ex.ToString();
payment.Json = response.Json;
payment.AmountPaid = 0M;
payment.TransactionId = null;
payment.IsProcessed = false;
}
db.Payments.Add(payment);
db.SaveChanges();
return payment;
}
public static bool TestPayPal(this StoreFrontConfiguration config, BaseController controller)
{
if (config == null)
{
throw new ArgumentNullException("config");
}
if (controller == null)
{
throw new ArgumentNullException("controller");
}
if (!config.PaymentMethod_PayPal_Enabled)
{
controller.AddUserMessage("PayPal Test Failed!", "PayPal is not enabled in your store front configuration. Make sure to enable it on the Payments tab.", UserMessageType.Danger);
return false;
}
else
{
bool useSandbox = !config.PaymentMethod_PayPal_UseLiveServer;
PayPalPaymentClient client = new PayPalPaymentClient();
try
{
PayPalOAuthTokenData token = client.TestPayPalOAuthToken(config.PaymentMethod_PayPal_Client_Id, config.PaymentMethod_PayPal_Client_Secret, useSandbox);
if (!string.IsNullOrWhiteSpace(token.access_token))
{
//token appears good
controller.AddUserMessage("PayPal Test Passed!", "PayPal tested successfully using the " + (useSandbox ? " TEST" : " LIVE") + " server", UserMessageType.Success);
return true;
}
controller.AddUserMessage("PayPal Test Failed!", "PayPal test failed using the " + (useSandbox ? " TEST" : " LIVE") + " server", UserMessageType.Danger);
return false;
}
catch (Exception ex)
{
controller.AddUserMessage("PayPal Test Failed!", "PayPal test failed. with error " + ex.GetType().FullName + " using the " + (useSandbox ? " TEST" : " LIVE") + " server.\nPlease verify your PayPal configuration in the store front edit page on the Payments Tab.\nError Message: " + ex.Message, UserMessageType.Danger);
return false;
}
}
}
