bid/library/Ppb/Model/PaymentGateway/PayPal.php

<?php

/**
 *
 * PHP Pro Bid $Id$ uBw224WvjeTz4R4u5UgnuqAig8adbQ58ZcEFqI9hEBg=
 *
 * @link        http://www.phpprobid.com
 * @copyright   Copyright (c) 2015 Online Ventures Software & CodeCube SRL
 * @license     http://www.phpprobid.com/license Commercial License
 *
 * @version     7.7
 */
/**
 * paypal payment gateway model class
 */

namespace Ppb\Model\PaymentGateway;

use Cube\Controller\Request\AbstractRequest,
    Cube\Controller\Front,
    Ppb\Service\Table\Relational\Locations as LocationsService,
    Ppb\Service\Transactions as TransactionsService;

class PayPal extends AbstractPaymentGateway
{
    /**
     * payment gateway name
     */
    const NAME = 'PayPal';

    /**
     * required settings
     */
    const BUSINESS = 'business';

    /**
     * form post url
     */
    const POST_URL = 'https://www.paypal.com/cgi-bin/webscr';

    /**
     * paypal description
     */
    protected $_description = 'Click to pay through PayPal.';

    public function __construct($userId = null)
    {
        parent::__construct(self::NAME, $userId);
    }

    /**
     *
     * check if the gateway is enabled
     *
     * @return bool
     */
    public function enabled()
    {
        if (!empty($this->_data[self::BUSINESS])) {
            return true;
        }

        return false;
    }

    /**
     *
     * get paypal setup form elements
     *
     * @return array
     */
    public function getElements()
    {
        $translate = $this->getTranslate();

        return array(
            array(
                'form_id'     => 'PayPal',
                'id'          => self::BUSINESS,
                'element'     => 'text',
                'label'       => $this->_('PayPal Email Address'),
                'description' => $translate->_('Enter your PayPal registered email address<br>'
                        . 'PayPal IPN URL: <br>') . $this->getIpnUrl(),
                'attributes'  => array(
                    'class' => 'form-control input-medium',
                ),
//                'validators' => array(
//                    'Email'
//                ),
            ),
        );
    }

    public function formElements()
    {
        $elements = array(
            array(
                'id'      => 'cmd',
                'value'   => '_xclick',
                'element' => 'hidden',
            ),
            array(
                'id'      => 'bn',
                'value'   => 'wa_dw_2.0.4',
                'element' => 'hidden',
            ),
            array(
                'id'      => self::BUSINESS,
                'value'   => $this->_data[self::BUSINESS],
                'element' => 'hidden',
            ),
            array(
                'id'      => 'receiver_email',
                'value'   => $this->_data[self::BUSINESS],
                'element' => 'hidden',
            ),
            array(
                'id'      => 'item_name',
                'value'   => $this->getName(),
                'element' => 'hidden',
            ),
            array(
                'id'      => 'amount',
                'value'   => $this->getAmount(),
                'element' => 'hidden',
            ),
            array(
                'id'      => 'currency_code',
                'value'   => $this->getCurrency(),
                'element' => 'hidden',
            ),
            array(
                'id'      => 'custom',
                'value'   => $this->getTransactionId(),
                'element' => 'hidden',
            ),
            array(
                'id'      => 'notify_url',
                'value'   => $this->getIpnUrl(),
                'element' => 'hidden',
            ),
            array(
                'id'      => 'return',
                'value'   => $this->getSuccessUrl(),
                'element' => 'hidden',
            ),
            array(
                'id'      => 'cancel_return',
                'value'   => $this->getFailureUrl(),
                'element' => 'hidden',
            ),
            array(
                'id'      => 'undefined_quantity',
                'value'   => '0',
                'element' => 'hidden',
            ),
            array(
                'id'      => 'no_note',
                'value'   => '1',
                'element' => 'hidden',
            ),
        );

        $transactionsService = new TransactionsService();
        $transaction = $transactionsService->findBy('id', $this->getTransactionId());

        $addressId = null;
        if ($transaction->getData('sale_id')) {
            $sale = $transaction->findParentRow('\Ppb\Db\Table\Sales');
            $addressId = $sale->getData('shipping_address_id');
        }

        $user = $this->getUser();

        $shippingAddress = $user->getAddress($addressId);

        if ($shippingAddress !== null) {
            $user->setAddress($shippingAddress);
            $locationsService = new LocationsService();

            $country = $user['country'];
            if (is_numeric($country)) {
                $row = $locationsService->findBy('id', (int)$country);
                if ($row != null) {
                    $country = strtoupper($row->getData('iso_code'));
                }
            }

            $elements[] = array(
                'id' => 'address_override',
                'value' => '1',
                'element' => 'hidden',
            );
            $elements[] = array(
                'id' => 'first_name',
                'value' => $user['name']['first'],
                'element' => 'hidden',
            );
            $elements[] = array(
                'id' => 'last_name',
                'value' => $user['name']['last'],
                'element' => 'hidden',
            );
            $elements[] = array(
                'id' => 'address1',
                'value' => $shippingAddress['address'],
                'element' => 'hidden',
            );
            $elements[] = array(
                'id' => 'city',
                'value' => $shippingAddress['city'],
                'element' => 'hidden',
            );
            $elements[] = array(
                'id' => 'country',
                'value' => $country,
                'element' => 'hidden',
            );
            $elements[] = array(
                'id' => 'zip',
                'value' => $user['zip_code'],
                'element' => 'hidden',
            );

            $state = $user['state'];
            if (is_numeric($state)) {
                $row = $locationsService->findBy('id', (int)$state);
                if ($row != null) {
                    $state = ($country == 'US') ? strtoupper($row->getData('iso_code')) : $row->getData('name');
                }
            }

            $elements[] = array(
                'id' => 'state',
                'value' => $state,
                'element' => 'hidden',
            );

            $elements[] = array(
                'id' => 'email',
                'value' => $user['email'],
                'element' => 'hidden',
            );


        }
        else {
            $elements[] = array(
                'id'      => 'no_shipping',
                'value'   => '1',
                'element' => 'hidden',
            );
        }

        return $elements;
    }

    /**
     *
     * get gateway post url
     *
     * @return string
     */
    public function getPostUrl()
    {
        return self::POST_URL;
    }

    /**
     *
     * process ipn
     *
     * @param \Cube\Controller\Request\AbstractRequest $request
     *
     * @return bool      return true if ipn returns a valid transaction
     */
    public function processIpn(AbstractRequest $request)
    {
        $errno = null;
        $errstr = null;

        $response = false;

        if ($request->isPost()) {

            $fp = fsockopen('ssl://www.paypal.com', 443, $errno, $errstr, 30);

            if (!$fp) {
                $this->setGatewayPaymentStatus($errstr . ' (' . $errno . ')');
            }
            else {
                $content = 'cmd=_notify-validate';

                foreach ($request->getParams() as $key => $value) {
                    $content .= '&' . $key . '=' . urlencode(stripslashes($value));
                }

                $header = "POST /cgi-bin/webscr HTTP/1.1\r\n"
                    . "Content-Type: application/x-www-form-urlencoded\r\n"
                    . "Host: www.paypal.com\r\n"
                    . "Connection: close\r\n"
                    . "Content-Length: " . strlen($content) . "\r\n\r\n";

                fputs($fp, $header . $content);

                $paymentStatus = $_POST['payment_status'];
                $this->setTransactionId($_POST['custom'])
                    ->setAmount($_POST['mc_gross'])
                    ->setCurrency($_POST['mc_currency'])
                    ->setGatewayPaymentStatus($paymentStatus)
                    ->setGatewayTransactionCode($_POST['txn_id']);

                while (!feof($fp)) {
                    $result = trim(fgets($fp, 1024));

                    if (strcmp($result, "VERIFIED") == 0) {
                        if ($paymentStatus == "Completed") {
                            $response = true;
                        }
                    }
                    else if (strcmp($result, "INVALID") == 0) {
                        $this->setGatewayPaymentStatus($result);
                    }
                }

                fclose($fp);
            }
        }

        return $response;
    }

}