<?php
class IWD_Opc_Model_Api_Nvp extends Mage_Paypal_Model_Api_Nvp
{



    /**
     * Return Paypal Api version
     *
     * @return string
     */
    public function getVersion()
    {
        return '94.0';
    }


    /**
     * SetExpressCheckout call
     * @link https://cms.paypal.com/us/cgi-bin/?&cmd=_render-content&content_ID=developer/e_howto_api_nvp_r_SetExpressCheckout
     * TODO: put together style and giropay settings
     */
    public function callSetExpressCheckout()
    {

        $this->_prepareExpressCheckoutCallRequest($this->_setExpressCheckoutRequest);
        $request = $this->_exportToRequest($this->_setExpressCheckoutRequest);
        $this->_exportLineItems($request);

        // import/suppress shipping address, if any
        $options = $this->getShippingOptions();
        if ($this->getAddress()) {
            $request = $this->_importAddresses($request);
            $request['ADDROVERRIDE'] = 1;
        } elseif ($options && (count($options) <= 10)) { // doesn't support more than 10 shipping options
            $request['CALLBACK'] = $this->getShippingOptionsCallbackUrl();
            $request['CALLBACKTIMEOUT'] = 6; // max value
            $request['MAXAMT'] = $request['AMT'] + 999.00; // it is impossible to calculate max amount
            $this->_exportShippingOptions($request);
        }
        // @edelahorra
        $request['LANDINGPAGE'] = 'Billing';

        // add recurring profiles information
        $i = 0;
        foreach ($this->_recurringPaymentProfiles as $profile) {
            $request["L_BILLINGTYPE{$i}"] = 'RecurringPayments';
            $request["L_BILLINGAGREEMENTDESCRIPTION{$i}"] = $profile->getScheduleDescription();
            $i++;
        }



        $paypaltoken = Mage::helper('opc/paypal')->refreshAccessToken();
		if(isset($paypaltoken->access_token) && !empty($paypaltoken->access_token)) {
			$request["IDENTITYACCESSTOKEN"] = $paypaltoken->access_token;
		}




        $response = $this->call(self::SET_EXPRESS_CHECKOUT, $request);
        $this->_importFromResponse($this->_setExpressCheckoutResponse, $response);
    }


    /**
     * GetExpressCheckoutDetails call
     * @link https://cms.paypal.com/us/cgi-bin/?&cmd=_render-content&content_ID=developer/e_howto_api_nvp_r_GetExpressCheckoutDetails
     */
    function callGetExpressCheckoutDetails()
    {
        $this->_prepareExpressCheckoutCallRequest($this->_getExpressCheckoutDetailsRequest);
        $request = $this->_exportToRequest($this->_getExpressCheckoutDetailsRequest);
        $response = $this->call(self::GET_EXPRESS_CHECKOUT_DETAILS, $request);

         Mage::log("PayPal IPN POST data: ".print_r($response, true).".", null, "paypal_ipn.log");

        $this->_importFromResponse($this->_paymentInformationResponse, $response);
        $this->_exportAddressses($response);
    }

}