index.php

<?php

use Omnipay\Common\CreditCard;
use Omnipay\Omnipay;
use Silex\Application;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpFoundation\ParameterBag;

require __DIR__.'/vendor/autoload.php';
$config = include('config.php');

// Set the timezone
date_default_timezone_set('Europe/Dublin');

// Create a basic Silex application
$app = new Application();

// Enable Silex debugging
$app['debug'] = true;

// Setup application to recieve requests as JSON
$app->before(function (Request $request) {
  if (0 === strpos($request->headers->get('Content-Type'), 'application/json')) {
    $data = json_decode($request->getContent(), true);
    $request->request->replace(is_array($data) ? $data : array());
  }
});

$app->after(function (Request $request, Response $response) use ($config) {
    $response->headers->set('Access-Control-Allow-Origin', $config->client_url);
});

// Main redirect when hitting the root
$app->get('/', function (Request $request) use ($app, $config) {
    return $app->redirect($config->main_redirect, 301);
});

$app->get('/{anything}', function (Request $request) use ($app, $config) {
        return $app->redirect($config->main_redirect, 301);
});

// Make a request to the realex API
$app->post('/api/pay', function (Request $request) use ($app, $config) {
  // Create a gateway to make a request
  $gateway = Omnipay::create('Realex_Remote');

  // Check which api the user wants to use
  if($request->request->get('api') == 'testingpays') {
    // Set the default testingpays api settings
    $gateway->setEndpoint($config->testingpays_endpoint);
    $gateway->setMerchantId($config->testingpays_merchantId);
    $gateway->setAccount($config->testingpays_account);
    $gateway->setSecret($config->testingpays_secret);
  } else {
    // Set the default realex api settings
    $gateway->setMerchantId($config->realex_merchantId);
    $gateway->setAccount($config->realex_account);
    $gateway->setSecret($config->realex_secret);
  }

  if($request->request->get('3dsecure') == '1') {
      $gateway->set3dSecure(1);
  }

  $formInputData = array(
    'firstName' => $request->request->get('firstName'),
    'lastName' => $request->request->get('lastName'),
    'number' => $request->request->get('cardNumber'),
    'cvv' => $request->request->get('cvv'),
    'expiryMonth' => $request->request->get('expiryMonth'),
    'expiryYear' => $request->request->get('expiryYear')
  );

  $card = new CreditCard($formInputData);

  $response = $gateway->purchase(array(
    'transactionId' => uniqid(),
    'amount'        => $request->request->get('total'),
    'currency'      => $request->request->get('currency'),
    'card'          => $card
  ))->send();

  if ($response->isRedirect()) {
      // redirect to offsite payment gateway
      // return JSON object with the redirect details
      return json_encode([
          "url" => $response->getRedirectUrl(),
          "method" => $response->getRedirectMethod(),
          "data" => $response->getRedirectData(),
          "xml" => $response->getXML()
      ]);
  } else {
      // Get the XML response
      return json_encode([
          "xml" => $response->getXML()
      ]);
  }
});

// Make a request to the realex API
$app->post('/three_d_success', function (Request $request) use ($app, $config) {
  if ("" == $request->request->get('PaRes')) {
      return $app->redirect($config->client_url . '?three_d_return=true&three_d_cancelled=true');
  } else {
      // Create a gateway to make a request
      $gateway = Omnipay::create('Realex_Remote');
      $md = json_decode(base64_decode($request->request->get('MD')));

      // Check which api the user wants to use
      if($md->api == 'testingpays') {
        // Set the default testingpays api settings
        $gateway->setEndpoint($config->testingpays_endpoint);
        $gateway->setMerchantId($config->testingpays_merchantId);
        $gateway->setAccount($config->testingpays_account);
        $gateway->setSecret($config->testingpays_secret);
      } else {
        // Set the default realex api settings
        $gateway->setMerchantId($config->realex_merchantId);
        $gateway->setAccount($config->realex_account);
        $gateway->setSecret($config->realex_secret);
      }

      // First we need to verify the signature
      $response = $gateway->completePurchase(array(
          'PaRes' => $request->request->get('PaRes'),
          'MD' => $request->request->get('MD')
      ))->send();

      // Return to the Ember shop with the response XML returned
      //header("Location: " . $config->client_url . '?three_d_return=true&xml=' . $response->getXML()); /* Redirect browser */
      $x = str_replace(array("\r", "\n"), '', $response->getXML());
      $xml_data = base64_encode($x);
      return $app->redirect($config->client_url . '?three_d_return=true&xml=' . urlencode($xml_data));
  }
});

$app->run();

?>