/// <summary>
        /// Process recurring payment
        /// </summary>
        /// <param name="processPaymentRequest">Payment info required for an order processing</param>
        /// <returns>Process payment result</returns>
        public ProcessPaymentResult ProcessRecurringPayment(ProcessPaymentRequest processPaymentRequest)
        {
            var result = new ProcessPaymentResult();

            if (!processPaymentRequest.IsRecurringPayment)
            {
                var customer = _customerService.GetCustomerById(processPaymentRequest.CustomerId);

                var subscription = new ARBSubscriptionType();
                var creditCard = new net.authorize.api.CreditCardType();

                subscription.name = processPaymentRequest.OrderGuid.ToString();

                creditCard.cardNumber = processPaymentRequest.CreditCardNumber;
                creditCard.expirationDate = processPaymentRequest.CreditCardExpireYear + "-" + processPaymentRequest.CreditCardExpireMonth; // required format for API is YYYY-MM
                creditCard.cardCode = processPaymentRequest.CreditCardCvv2;

                subscription.payment = new PaymentType();
                subscription.payment.Item = creditCard;

                subscription.billTo = new NameAndAddressType();
                subscription.billTo.firstName = customer.BillingAddress.FirstName;
                subscription.billTo.lastName = customer.BillingAddress.LastName;
                subscription.billTo.address = customer.BillingAddress.Address1;
                //subscription.billTo.address = customer.BillingAddress.Address1 + " " + customer.BillingAddress.Address2;
                subscription.billTo.city = customer.BillingAddress.City;
                if (customer.BillingAddress.StateProvince != null)
                {
                    subscription.billTo.state = customer.BillingAddress.StateProvince.Abbreviation;
                }
                subscription.billTo.zip = customer.BillingAddress.ZipPostalCode;

                if (customer.ShippingAddress != null)
                {
                    subscription.shipTo = new NameAndAddressType();
                    subscription.shipTo.firstName = customer.ShippingAddress.FirstName;
                    subscription.shipTo.lastName = customer.ShippingAddress.LastName;
                    subscription.shipTo.address = customer.ShippingAddress.Address1;
                    //subscription.shipTo.address = customer.ShippingAddress.Address1 + " " + customer.ShippingAddress.Address2;
                    subscription.shipTo.city = customer.ShippingAddress.City;
                    if (customer.ShippingAddress.StateProvince != null)
                    {
                        subscription.shipTo.state = customer.ShippingAddress.StateProvince.Abbreviation;
                    }
                    subscription.shipTo.zip = customer.ShippingAddress.ZipPostalCode;

                }

                subscription.customer = new CustomerType();
                subscription.customer.email = customer.BillingAddress.Email;
                subscription.customer.phoneNumber = customer.BillingAddress.PhoneNumber;

                subscription.order = new OrderType();
                subscription.order.description = "Recurring payment";

                // Create a subscription that is leng of specified occurrences and interval is amount of days ad runs

                subscription.paymentSchedule = new PaymentScheduleType();
                DateTime dtNow = DateTime.UtcNow;
                subscription.paymentSchedule.startDate = new DateTime(dtNow.Year, dtNow.Month, dtNow.Day);
                subscription.paymentSchedule.startDateSpecified = true;

                subscription.paymentSchedule.totalOccurrences = Convert.ToInt16(processPaymentRequest.RecurringTotalCycles);
                subscription.paymentSchedule.totalOccurrencesSpecified = true;

                var orderTotal = Math.Round(processPaymentRequest.OrderTotal, 2);
                subscription.amount = orderTotal;
                subscription.amountSpecified = true;

                // Interval can't be updated once a subscription is created.
                subscription.paymentSchedule.interval = new PaymentScheduleTypeInterval();
                switch (processPaymentRequest.RecurringCyclePeriod)
                {
                    case RecurringProductCyclePeriod.Days:
                        subscription.paymentSchedule.interval.length = Convert.ToInt16(processPaymentRequest.RecurringCycleLength);
                        subscription.paymentSchedule.interval.unit = ARBSubscriptionUnitEnum.days;
                        break;
                    case RecurringProductCyclePeriod.Weeks:
                        subscription.paymentSchedule.interval.length = Convert.ToInt16(processPaymentRequest.RecurringCycleLength * 7);
                        subscription.paymentSchedule.interval.unit = ARBSubscriptionUnitEnum.days;
                        break;
                    case RecurringProductCyclePeriod.Months:
                        subscription.paymentSchedule.interval.length = Convert.ToInt16(processPaymentRequest.RecurringCycleLength);
                        subscription.paymentSchedule.interval.unit = ARBSubscriptionUnitEnum.months;
                        break;
                    case RecurringProductCyclePeriod.Years:
                        subscription.paymentSchedule.interval.length = Convert.ToInt16(processPaymentRequest.RecurringCycleLength * 12);
                        subscription.paymentSchedule.interval.unit = ARBSubscriptionUnitEnum.months;
                        break;
                    default:
                        throw new NopException("Not supported cycle period");
                }

                using (var webService = new net.authorize.api.Service())
                {
                    if (_authorizeNetPaymentSettings.UseSandbox)
                        webService.Url = "https://apitest.authorize.net/soap/v1/Service.asmx";
                    else
                        webService.Url = "https://api.authorize.net/soap/v1/Service.asmx";

                    var authentication = PopulateMerchantAuthentication();
                    var response = webService.ARBCreateSubscription(authentication, subscription);

                    if (response.resultCode == MessageTypeEnum.Ok)
                    {
                        result.SubscriptionTransactionId = response.subscriptionId.ToString();
                        result.AuthorizationTransactionCode = response.resultCode.ToString();
                        result.AuthorizationTransactionResult = string.Format("Approved ({0}: {1})", response.resultCode.ToString(), response.subscriptionId.ToString());

                        if (_authorizeNetPaymentSettings.TransactMode == TransactMode.Authorize)
                        {
                            result.NewPaymentStatus = PaymentStatus.Authorized;
                        }
                        else
                        {
                            result.NewPaymentStatus = PaymentStatus.Paid;
                        }
                    }
                    else
                    {
                        result.AddError(string.Format("Error processing recurring payment. {0}", GetErrors(response)));
                    }
                }
            }

            return result;
        }
        /// <summary>
        /// Cancels a recurring payment
        /// </summary>
        /// <param name="cancelPaymentRequest">Request</param>
        /// <returns>Result</returns>
        public CancelRecurringPaymentResult CancelRecurringPayment(CancelRecurringPaymentRequest cancelPaymentRequest)
        {
            var result = new CancelRecurringPaymentResult();
            long subscriptionId;
            long.TryParse(cancelPaymentRequest.Order.SubscriptionTransactionId, out subscriptionId);

            using (var webService = new net.authorize.api.Service())
            {
                if (_authorizeNetPaymentSettings.UseSandbox)
                    webService.Url = "https://apitest.authorize.net/soap/v1/Service.asmx";
                else
                    webService.Url = "https://api.authorize.net/soap/v1/Service.asmx";

                var authentication = PopulateMerchantAuthentication();
                var response = webService.ARBCancelSubscription(authentication, subscriptionId);

                if (response.resultCode == MessageTypeEnum.Ok)
                {
                    //ok
                }
                else
                {
                    result.AddError("Error cancelling subscription, please contact customer support. " + GetErrors(response));
                }
            }
            return result;
        }