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<?php

/**
 * @file PaypalPaymentForm.inc.php
 *
 * Copyright (c) 2014-2021 Simon Fraser University
 * Copyright (c) 2003-2021 John Willinsky
 * Distributed under the GNU GPL v3. For full terms see the file docs/COPYING.
 *
 * @class PaypalPaymentForm
 *
 * Form for Paypal-based payments.
 *
 */

import('lib.pkp.classes.form.Form');

class PaypalPaymentForm extends Form {
	/** @var PaypalPaymentPlugin */
	var $_paypalPaymentPlugin;

/** @var QueuedPayment */
	var $_queuedPayment;

/**
	 * @param $paypalPaymentPlugin PaypalPaymentPlugin
	 * @param $queuedPayment QueuedPayment
	 */
	function __construct($paypalPaymentPlugin, $queuedPayment) {
		$this->_paypalPaymentPlugin = $paypalPaymentPlugin;
		$this->_queuedPayment = $queuedPayment;
		parent::__construct(null);
	}

/**
	 * @copydoc Form::display()
	 */
	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');
		}
	}
}