PaypalPaymentForm.inc.php

<?php
 
import('lib.pkp.classes.form.Form');
 
class PaypalPaymentForm extends Form {
   var $_paypalPaymentPlugin;
 
   var $_queuedPayment;
 
   function __construct($paypalPaymentPlugin, $queuedPayment) {
      $this->_paypalPaymentPlugin = $paypalPaymentPlugin;
      $this->_queuedPayment = $queuedPayment;
      parent::__construct(null);
   }
 
   function display($request = null, $template = null) {
      try {
         $journal = $request->getJournal();
         $paymentManager = Application::getPaymentManager($journal);
         $gateway = Omnipay\Omnipay::create('PayPal_Rest');
         $gateway->initialize(array(
            'clientId' => $this->_paypalPaymentPlugin->getSetting($journal->getId(), 'clientId'),
            'secret' => $this->_paypalPaymentPlugin->getSetting($journal->getId(), 'secret'),
            'testMode' => $this->_paypalPaymentPlugin->getSetting($journal->getId(), 'testMode'),
         ));
         $transaction = $gateway->purchase(array(
            'amount' => number_format($this->_queuedPayment->getAmount(), 2),
            'currency' => $this->_queuedPayment->getCurrencyCode(),
            'description' => $paymentManager->getPaymentName($this->_queuedPayment),
            'returnUrl' => $request->url(null, 'payment', 'plugin', array($this->_paypalPaymentPlugin->getName(), 'return'), array('queuedPaymentId' => $this->_queuedPayment->getId())),
            'cancelUrl' => $request->url(null, 'index'),
         ));
         $response = $transaction->send();
         if ($response->isRedirect()) $request->redirectUrl($response->getRedirectUrl());
         if (!$response->isSuccessful()) throw new \Exception($response->getMessage());
         throw new \Exception('PayPal response was not redirect!');
      } catch (\Exception $e) {
         error_log('PayPal transaction exception: ' . $e->getMessage());
         $templateMgr = TemplateManager::getManager($request);
         $templateMgr->assign('message', 'plugins.paymethod.paypal.error');
         $templateMgr->display('frontend/pages/message.tpl');
      }
   }
}