Example #1
0
        protected PayPalPaymentData CreatePayPalPayment(PayPalOAuthTokenData token, decimal total, string description, PayPalItemData[] items, string return_url, string cancel_url, bool useSandbox)
        {
            if (string.IsNullOrEmpty(token.access_token))
            {
                throw new ArgumentNullException("token.access_token");
            }
            if (string.IsNullOrEmpty(return_url))
            {
                throw new ArgumentNullException("return_url");
            }
            if (string.IsNullOrEmpty(cancel_url))
            {
                throw new ArgumentNullException("cancel_url");
            }
            if (total < 0.01M)
            {
                throw new ArgumentOutOfRangeException("total", "total must be 1 cent or more; value invalid: " + total.ToString());
            }

            PayPalPaymentData requestData = new PayPalPaymentData();
            requestData.intent = "sale";
            requestData.redirect_urls.return_url = return_url;
            requestData.redirect_urls.cancel_url = cancel_url;
            requestData.payer.payment_method = "paypal";

            List<PayPalTransactionData> transactions = new List<PayPalTransactionData>();
            transactions.Add(new PayPalTransactionData(total, description, items));
            requestData.transactions = transactions.ToArray();

            string requestJson = JsonConvert.SerializeObject(requestData, new JsonSerializerSettings() { NullValueHandling = NullValueHandling.Ignore });
            StringContent postContent = new StringContent(requestJson, Encoding.UTF8, "application/json");

            HttpClient httpClient = new HttpClient();
            httpClient.Timeout = new TimeSpan(0, 0, 30);
            Uri requestUri = null;
            if (useSandbox)
            {
                httpClient.BaseAddress = new Uri("https://api.sandbox.paypal.com/");
            }
            else
            {
                httpClient.BaseAddress = new Uri("https://api.paypal.com/");
            }
            requestUri = new Uri("v1/payments/payment", UriKind.Relative);

            HttpResponseMessage response;
            httpClient.DefaultRequestHeaders.Clear();
            httpClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
            httpClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("text/xml"));
            httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token.access_token);
            try
            {
                response = httpClient.PostAsync(requestUri, postContent).Result;
            }
            catch (Exception ex)
            {
                string message = "HTTP Client returned an error during PayPal Create Payment API post: " + ex.Message + ". See inner exception for details.";
                throw new Exceptions.PayPalExceptionCreatePaymentFailed(useSandbox, message, null, ex);
            }

            PayPalPaymentData paymentResponseData;
            if (response.IsSuccessStatusCode)
            {
                //get PayPal data
                string json = response.Content.ReadAsStringAsync().Result;
                try
                {
                    paymentResponseData = JsonConvert.DeserializeObject<PayPalPaymentData>(json);
                }
                catch (Exception ex)
                {
                    string message = "Error reading PayPal Create Payment API result! \nError code: " + response.StatusCode + " " + response.ReasonPhrase + "\n" + response.ToString() + " see inner exception for details.\nJSON Response Data: " + json;
                    throw new Exceptions.PayPalExceptionCreatePaymentFailed(useSandbox, message, response, ex);
                }
                paymentResponseData.Json = json;
            }
            else
            {
                string message = "PayPal Create Payment API call failed! \nError code: " + response.StatusCode + " " + response.ReasonPhrase + "\n" + response.ToString();
                throw new Exceptions.PayPalExceptionCreatePaymentFailed(useSandbox, message, response, null);
            }

            return paymentResponseData;
        }
Example #2
0
        public static void SetFromPayPalPayment(this Payment payment, PayPalPaymentData response)
        {
            if (response.transactions == null)
            {
                throw new ArgumentNullException("response.transactions");
            }
            if (response.transactions.Count() != 1)
            {
                throw new ArgumentOutOfRangeException("response.transactions", "response.transactions count is invalid in the response. count must be 1. current count: " + response.transactions.Count());
            }

            PayPalTransactionData transaction = response.transactions.SingleOrDefault();
            PayPalPayerData payer = response.payer;
            if (!response.payer.payer_info.HasValue)
            {
                throw new ArgumentNullException("response.payer.payer_info");
            }
            PayPalPayerInfoData payer_info = response.payer.payer_info.Value;

            if (payer.funding_instruments != null && payer.funding_instruments.Count() != 1 && payer.funding_instruments.Count() != 0)
            {
                //wrong number of funding instruments, only 1 is supported
                throw new ArgumentOutOfRangeException("response.payer.funding_instruments", "funding_instruments count is invalid in the response. count must be 1 or 0 (or null). current count: " + payer.funding_instruments.Count());
            }
            PayPalCreditCardData? directCreditCard = null;
            if (payer.funding_instruments != null && payer.funding_instruments.Count() == 1)
            {
                directCreditCard = payer.funding_instruments[0].credit_card;
            }

            if (response.links == null || response.links.Count() == 0)
            {
                throw new ArgumentNullException("response.links");
            }
            if (!response.links.Any(l => l.rel == "self"))
            {
                throw new ArgumentException("Response is invalid. response.links[rel = self] not found in response.");
            }
            PayPalLinkData linkToSelf = response.links.Single(l => l.rel == "self");

            if (transaction.related_resources == null)
            {
                throw new ArgumentNullException("response.transactions[0].related_resources");
            }
            if (transaction.related_resources.Count() != 1)
            {
                throw new ArgumentOutOfRangeException("response", "response.transactions[0].related_resources count is invalid in the response. count must be 1. current count: " + transaction.related_resources.Count());
            }
            PayPalSaleData sale = transaction.related_resources[0].sale;

            if (!payer_info.shipping_address.HasValue)
            {
                throw new ArgumentNullException("response.payer.payer_info.shipping_address");
            }
            PayPalShippingAddressData payerAddress = payer_info.shipping_address.Value;

            if (!transaction.item_list.HasValue)
            {
                throw new ArgumentNullException("response.transactions[0].item_list");
            }
            if (!transaction.item_list.Value.shipping_address.HasValue)
            {
                throw new ArgumentNullException("response.transactions[0].item_list.shipping_address");
            }
            PayPalShippingAddressData shippingAddress = transaction.item_list.Value.shipping_address.Value;

            if (sale.links == null)
            {
                throw new ArgumentNullException("response.transactions[0].related_resources[0].sale.links");
            }

            if (!sale.links.Any(l => l.rel == "self"))
            {
                throw new ArgumentException("Response is invalid. response.transactions[0].related_resources[0].sale.links[rel = self] not found in response.");
            }
            PayPalLinkData linkToSale = sale.links.Single(l => l.rel == "self");

            if (!sale.links.Any(l => l.rel == "refund"))
            {
                throw new ArgumentException("Response is invalid. response.transactions[0].related_resources[0].sale.links[rel = refund] not found in response.");
            }
            PayPalLinkData linkToRefund = sale.links.Single(l => l.rel == "refund");

            if (!sale.links.Any(l => l.rel == "parent_payment"))
            {
                throw new ArgumentException("Response is invalid. response.transactions[0].related_resources[0].sale.links[rel = parent_payment] not found in response.");
            }
            PayPalLinkData linkToParentPayment = sale.links.Single(l => l.rel == "parent_payment");

            //some doubt to the right id to put here
            payment.TransactionId = sale.id;

            payment.AmountPaid = transaction.amount.ToDecimal();
            payment.Json = response.Json;

            //[Display(Name = "PayPal Payment Id", Description = "PayPal Payment Resource from PayPal payment (response.id)")]
            payment.PayPalPaymentResource = response.id;

            //[Display(Name = "PayPal Payment State", Description = "PayPal Payment State from PayPal payment (response.state")]
            payment.PayPalState = response.state;

            //[Display(Name = "PayPal Payment Intent", Description = "PayPal Payment Intent from PayPal payment (response.intent")]
            payment.PayPalIntent = response.intent;

            //[Display(Name = "PayPal Payment Create Time", Description = "Time payment was started from PayPal payment (response.create_time")]
            payment.PayPalCreateTime = response.create_time;

            //[Display(Name = "PayPal Payment Update Time", Description = "Time payment was completed from PayPal payment (response.update_time")]
            payment.PayPalUpdateTime = response.update_time;

            //[Display(Name = "PayPal Payment Method", Description = "Payment method from PayPal payment (response.payer.payment_method")]
            payment.PayPalPaymentMethod = payer.payment_method;

            if (!directCreditCard.HasValue)
            {
                //[Display(Name = "PayPal Payment Is a Direct Credit Card payment", Description = "Checked if this is a PayPal direct credit card payment from PayPal payment (response.payer.funding_instruments.Any()")]
                payment.PayPalIsDirectCreditCardPayment = false;
            }
            if (payer.funding_instruments != null && payer.funding_instruments.Count() == 1)
            {
                //[Display(Name = "PayPal Payment Is a Direct Credit Card payment", Description = "Checked if this is a PayPal direct credit card payment from PayPal payment (response.payer.funding_instruments.Any()")]
                payment.PayPalIsDirectCreditCardPayment = true;

                //[Display(Name = "PayPal Direct Credit Card Number", Description = "Credit card number for direct credit card payment from PayPal payment (response.payer.funding_instruments[0].credit_card.number")]
                payment.PayPalDirectCreditCardNumber = directCreditCard.Value.number;

                //[Display(Name = "PayPal Direct Credit Card Type", Description = "Credit card type for direct credit card payment from PayPal payment (response.payer.funding_instruments[0].credit_card.type")]
                payment.PayPalDirectCreditCardType = directCreditCard.Value.type;

                //[Display(Name = "PayPal Direct Credit Card Expire Month", Description = "Expiration month for direct credit card payment from PayPal payment (response.payer.funding_instruments[0].credit_card.expire_month")]
                payment.PayPalDirectCreditCardExpireMonth = directCreditCard.Value.expire_month;

                //[Display(Name = "PayPal Direct Credit Card Expire Year", Description = "Expiration year for direct credit card payment from PayPal payment (response.payer.funding_instruments[0].credit_card.expire_year")]
                payment.PayPalDirectCreditCardExpireYear = directCreditCard.Value.expire_year;

                //[Display(Name = "PayPal Direct Credit Card First Name", Description = "First Name for direct credit card payment from PayPal payment (response.payer.funding_instruments[0].credit_card.first_name")]
                payment.PayPalDirectCreditCardFirstName = directCreditCard.Value.first_name;

                //[Display(Name = "PayPal Direct Credit Card First Name", Description = "Last Name for direct credit card payment from PayPal payment (response.payer.funding_instruments[0].credit_card.last_name")]
                payment.PayPalDirectCreditCardLastName = directCreditCard.Value.last_name;

            }

            //[Display(Name = "PayPal Payer Email", Description = "Email address entered from PayPal payment (response.payer.payer_info.email")]
            payment.PayPalPayerEmail = payer_info.email;

            //[Display(Name = "PayPal Payer First Name", Description = "first name entered from PayPal payment (response.payer.payer_info.first_name")]
            payment.PayPalPayerFirstName = payer_info.first_name;

            //[Display(Name = "PayPal Payer Last Name", Description = "last name entered from PayPal payment (response.payer.payer_info.last_name")]
            payment.PayPalPayerLastName = payer_info.last_name;

            //[Display(Name = "PayPal Payer Id", Description = "Payer Id from PayPal payment (response.payer.payer_info.payer_id")]
            payment.PayPalPayerId = payer_info.payer_id;

            //[Display(Name = "PayPal Payment Resource API Link", Description = "Payment API Link from PayPal payment (response.links.[rel=self].href")]
            payment.PayPalPaymentResourceLink = linkToSelf.href;

            //[Display(Name = "PayPal Transaction Total", Description = "Transaction Total from PayPal payment (response.transactions.[0].amount.total")]
            payment.PayPalTransactionTotal = transaction.amount.total;

            //[Display(Name = "PayPal Transaction Currency", Description = "Transaction currency from PayPal payment (response.transactions.[0].amount.currency")]
            payment.PayPalTransactionCurrency = transaction.amount.currency;

            //[Display(Name = "PayPal Transaction Description", Description = "Transaction description from PayPal payment (response.transactions.[0].description")]
            payment.PayPalTransactionDescription = transaction.description;

            //[Display(Name = "PayPal Sale Transaction Id", Description = "PayPal Transaction Id from PayPal payment (response.transactions.[0].related_resources.[0].sale.id")]
            payment.PayPalSaleId = sale.id;

            //[Display(Name = "PayPal Sale Create Time", Description = "Time sale was started from PayPal payment (response.transactions.[0].related_resources.[0].sale.create_time")]
            payment.PayPalSaleCreateTime = sale.create_time;

            //[Display(Name = "PayPal Sale Update Time", Description = "Time sale was completed from PayPal payment (response.transactions.[0].related_resources.[0].sale.update_time")]
            payment.PayPalSaleUpdateTime = sale.update_time;

            //[Display(Name = "PayPal Sale Total", Description = "PayPal Sale Total from PayPal payment (response.transactions.[0].related_resources.[0].sale.amount.total")]
            payment.PayPalSaleAmountTotal = sale.amount.total;

            //[Display(Name = "PayPal Sale Currency", Description = "PayPal Sale Currency from PayPal payment (response.transactions.[0].related_resources.[0].sale.amount.currency")]
            payment.PayPalSaleAmountCurrency = sale.amount.currency;

            //[Display(Name = "PayPal Sale Payment Mode", Description = "PayPal Sale Payment Mode from PayPal payment (response.transactions.[0].related_resources.[0].sale.payment_mode")]
            payment.PayPalSalePaymentMode = sale.payment_mode;

            //[Display(Name = "PayPal Sale Status", Description = "PayPal Sale status from PayPal payment (response.transactions.[0].related_resources.[0].sale.state")]
            payment.PayPalSaleState = sale.state;

            //[Display(Name = "PayPal Sale Protection Eligibility", Description = "PayPal Sale protection eligibility from PayPal payment (response.transactions.[0].related_resources.[0].sale.protection_eligibility")]
            payment.PayPalSaleProtectionEligibility = sale.protection_eligibility;

            //[Display(Name = "PayPal Sale Protection Eligibility Type", Description = "PayPal Sale protection eligibility type from PayPal payment (response.transactions.[0].related_resources.[0].sale.protection_eligibility_type")]
            payment.PayPalSaleProtectionEligibilityType = sale.protection_eligibility_type;

            //[Display(Name = "PayPal Sale Transaction Fee", Description = "PayPal Sale transaction fee from PayPal payment (response.transactions.[0].related_resources.[0].sale.transaction_fee.value")]
            payment.PayPalSaleTransactionFeeValue = sale.transaction_fee.value ;

            //[Display(Name = "PayPal Sale Transaction Fee Currency", Description = "PayPal Sale transaction fee currency from PayPal payment (response.transactions.[0].related_resources.[0].sale.transaction_fee.currency")]
            payment.PayPalSaleTransactionFeeCurrency = sale.transaction_fee.currency;

            //[Display(Name = "PayPal Sale API Link to Sale", Description = "PayPal API Link to sale from PayPal payment (response.transactions.[0].related_resources.[0].sale.links.[rel=self]")]
            payment.PayPalSaleAPILinkToSelf = linkToSale.href;

            //[Display(Name = "PayPal Sale API Link to Refund", Description = "PayPal API Link to refund from PayPal payment (response.transactions.[0].related_resources.[0].sale.links.[rel=refund]")]
            payment.PayPalSaleAPILinkToRefund = linkToRefund.href;

            //[Display(Name = "PayPal Sale API Link to Refund", Description = "PayPal API Link to refund from PayPal payment (response.transactions.[0].related_resources.[0].sale.links.[rel=parent_payment]")]
            payment.PayPalSaleAPILinkToParentPayment = linkToParentPayment.href;

            //[Display(Name = "PayPal Shipping Address Recipient Name", Description = "Shipping recipient name from PayPal payment (response.transactions.[0].item_list.shipping_address.recipient_name")]
            payment.PayPalShippingAddressRecipientName = shippingAddress.recipient_name;

            //[Display(Name = "PayPal Shipping Address Line 1", Description = "Shipping address line 1 from PayPal payment (response.transactions.[0].item_list.shipping_address.line1")]
            payment.PayPalShippingAddressLine1 = shippingAddress.line1;

            //[Display(Name = "PayPal Shipping Address Line 2", Description = "Shipping address line 2 from PayPal payment (response.transactions.[0].item_list.shipping_address.line2")]
            payment.PayPalShippingAddressLine2 = shippingAddress.line2;

            //[Display(Name = "PayPal Shipping Address City", Description = "Shipping City from PayPal payment (response.transactions.[0].item_list.shipping_address.city")]
            payment.PayPalShippingAddressCity = shippingAddress.city;

            //[Display(Name = "PayPal Shipping Address State", Description = "Shipping State from PayPal payment (response.transactions.[0].item_list.shipping_address.state")]
            payment.PayPalShippingAddressState = shippingAddress.state;

            //[Display(Name = "PayPal Shipping Address Postal Code", Description = "Shipping (ZIP) Postal code from PayPal payment (response.transactions.[0].item_list.shipping_address.postal_code")]
            payment.PayPalShippingAddressPostalCode = shippingAddress.postal_code;

            //[Display(Name = "PayPal Shipping Country Code", Description = "Shipping Country Code from PayPal payment (response.transactions.[0].item_list.shipping_address.country_code")]
            payment.PayPalShippingAddressCountryCode = shippingAddress.country_code;

            //[Display(Name = "PayPal Shipping Address Recipient Name", Description = "Shipping recipient name from PayPal payment (response.payer.payer_info.shipping_address.recipient_name")]
            payment.PayPalPayerShippingAddressRecipientName = payerAddress.recipient_name;

            //[Display(Name = "PayPal Shipping Address Line 1", Description = "Shipping address line 1 from PayPal payment (response.payer.payer_info.shipping_address.line1")]
            payment.PayPalPayerShippingAddressLine1 = payerAddress.line1;

            //[Display(Name = "PayPal Shipping Address Line 2", Description = "Shipping address line 2 from PayPal payment (response.payer.payer_info.shipping_address.line2")]
            payment.PayPalPayerShippingAddressLine2 = payerAddress.line2;

            //[Display(Name = "PayPal Shipping Address City", Description = "Shipping City from PayPal payment (response.payer.payer_info.shipping_address.city")]
            payment.PayPalPayerShippingAddressCity = payerAddress.city;

            //[Display(Name = "PayPal Shipping Address State", Description = "Shipping State from PayPal payment (response.payer.payer_info.shipping_address.state")]
            payment.PayPalPayerShippingAddressState = payerAddress.state;

            //[Display(Name = "PayPal Shipping Address Postal Code", Description = "Shipping (ZIP) Postal code from PayPal payment (response.payer.payer_info.shipping_address.postal_code")]
            payment.PayPalPayerShippingAddressPostalCode = payerAddress.postal_code;

            //[Display(Name = "PayPal Shipping Country Code", Description = "Shipping Country Code from PayPal payment (response.payer.payer_info.shipping_address.country_code")]
            payment.PayPalPayerShippingAddressCountryCode = payerAddress.country_code;
        }
Example #3
0
        public PayPalPaymentData TestCreateOneItemPayment(PayPalOAuthTokenData token, decimal total, string description, string return_url, string cancel_url, bool useSandbox)
        {
            if (string.IsNullOrEmpty(token.access_token))
            {
                throw new ArgumentNullException("token.access_token");
            }
            if (string.IsNullOrEmpty(return_url))
            {
                throw new ArgumentNullException("return_url");
            }
            if (string.IsNullOrEmpty(cancel_url))
            {
                throw new ArgumentNullException("cancel_url");
            }
            if (total < 0.01M)
            {
                throw new ArgumentOutOfRangeException("total", "total must be 1 cent or more; value invalid: " + total.ToString());
            }

            PayPalPaymentData requestData = new PayPalPaymentData();
            requestData.intent = "sale";
            requestData.redirect_urls.return_url = return_url;
            requestData.redirect_urls.cancel_url = cancel_url;
            requestData.payer.payment_method = "paypal";

            List<PayPalItemData> transactionItems = new List<PayPalItemData>();
            transactionItems.Add(new PayPalItemData("1", description, total.ToString("N2"), "X12345"));

            List<PayPalTransactionData> transactions = new List<PayPalTransactionData>();
            transactions.Add(new PayPalTransactionData(total, description, transactionItems.ToArray()));

            requestData.transactions = transactions.ToArray();

            string requestJson = JsonConvert.SerializeObject(requestData, new JsonSerializerSettings() { NullValueHandling = NullValueHandling.Ignore });
            StringContent postContent = new StringContent(requestJson, Encoding.UTF8, "application/json");

            HttpClient httpClient = new HttpClient();
            httpClient.Timeout = new TimeSpan(0, 0, 30);
            Uri requestUri = null;
            if (useSandbox)
            {
                httpClient.BaseAddress = new Uri("https://api.sandbox.paypal.com/");
            }
            else
            {
                httpClient.BaseAddress = new Uri("https://api.paypal.com/");
            }
            requestUri = new Uri("v1/payments/payment", UriKind.Relative);

            httpClient.DefaultRequestHeaders.Clear();
            httpClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
            httpClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("text/xml"));
            httpClient.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token.access_token);

            HttpResponseMessage response = httpClient.PostAsync(requestUri, postContent).Result;
            PayPalPaymentData paymentResponseData;
            if (response.IsSuccessStatusCode)
            {
                //get token data
                string json = response.Content.ReadAsStringAsync().Result;
                paymentResponseData = JsonConvert.DeserializeObject<PayPalPaymentData>(json);
                paymentResponseData.Json = json;
            }
            else
            {
                throw new ApplicationException("PayPal Create One Item Payment API call failed! \nError code: " + response.StatusCode + " " + response.ReasonPhrase + "\n" + response.ToString());
            }

            return paymentResponseData;
        }
Example #4
0
        /// <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;
        }