PaymentsController.php

<?php
/*
 * Zend Controller responsible for handling online payments.
 * + Talking to PayPal API
 * + Talking to PaymentSense API
 * + Talking to SalesForce API
 * + Auto-registering paying user with our system
 * + Notifying about new lead
 *
 * @author     Martynas Miliauskas <[email protected]>
 * @copyright  2008-2012 GulfJobsMarket Ltd.
 */
class PaymentsController extends Zend_Controller_Action 
{

  protected $_redirector = null;
  protected $shopping_basket = null;
  protected $user = null;

  function preDispatch() {
    // forcing protected connection
    $this->_helper->HTTPSForcer();
  }


  public function init()
  {
    $this->_redirector = $this->_helper->getHelper('Redirector');

    //=todo below is only for guests
    $this->shopping_basket = new Zend_Session_Namespace('guest_shopping_basket');
    $this->user = $this->shopping_basket->user;
  }

  // ...


  /**
   * Handles credit card processing using PayPal
   *
   * @param String     $token_id identification token issued by PayPal
   * @param Int        $payer_id
   * if all OK
   *   @return array ( PayPalClient object, array containing reply from PayPal)
   * else
  *    renders error page, containing explanation of what caused the error
  */
  private function checkout_with_paypal($token, $payer_id)
  {
    global $config;
    $session = new Zend_Session_Namespace('guest_shopping_basket');

    // creating a PayPal object
    $paypal = new PayPalClient(
      $config->payments->paypal->express->username,  
      $config->payments->paypal->express->password, 
      $config->payments->paypal->express->signature, 
      $config->payments->paypal->api->nvp,          
      $config->payments->paypal->api->express       
    );
    
    // running a purchase
    try {
      $reply_data = $paypal->doExpressCheckout(
        $token,
        $payer_id,
        $session->order_summary['price'],
        'USD'
      );
      
    } catch (PayPal_Exception $e) {
      $this->view->errors = array(
        'xxxx'
      );
      $this->view->partial_path = 'guest/_back_to_login.phtml';
      # redirect to errors page
      $this->renderScript('layout/errors.phtml');
      exit;
    }
    return array($paypal, $reply_data);
  }

  /**
   * Notifying system administrator with an email, about failed purchase
   *
   * @param Zend_Db_Table_Row $user 
   * @param Zend_Db_Table_Row $product
   * @param Zend_Db_Table_Row $campaign_details
   * @param String            $token 
   * @param Int               $payer_id
  */
  private function notify_user_about_failed_purchase( $user, $product, $campaign_details, $token, $payer_id )
  {
    $order_details = array(
      'error'         => true,
      'email'         => $user['email'],
      'firstName'     => $user['first_name'],
      'token'         => $token,
      'payerID'       => $payer_id,
      'amount'        => $product['price'] . ' ' . 'USD',
      'purchaseID'    => 'NO PURCHASE HAS BEEN MADE',
      'orderDetails'  => $campaign_details ? $campaign_details->name." (".$product['price']." credits)" : ""
    );
    Emails_Factory::sendPaymentNotificationEmail(
      $user['email'],
      $order_details
    );
  }

  /**
   * Notify system administrator about successfull purchase with an email
   *
   * @param Zend_Db_Table_Row $user 
   * @param Int               $purchase_id
   * @param Zend_Db_Table_Row $product
   * @param Zend_Db_Table_Row $campaign_details
   * @param String            $token
   * @param Int               $payer_id
  */
  private function notify_user_about_successfull_purchase( $user, $purchase_id, $product, $campaign_details, $token, $payer_id )
  {
    $email_data = array(
      'email'         => $user['email'],
      'firstName'     => $user['first_name'],
      'token'         => $token,
      'payerID'       => $payer_id,
      'amount'        => $product['price'] . ' ' . 'USD',
      'purchaseID'    => $purchase_id, 
      'orderDetails'  => $campaign_details->name." (".$product['price']." credits)" // string should be constructed like “CAMPAIGN_NAME (PRODUCT_PRICE credits)”
    );
    Emails_Factory::sendPaymentNotificationEmail(
      $user['email'], // this is a email address to send email to
      $email_data
    );
  }


  /**
   * Upsert lead into SalesForce, and notify system admin about it
   *
   * @param Zend_Db_Table_Row $user 
   * @param String            $case
  */
  private function upsert_lead_and_send_email_about_attempt_to_register($user, $case)
  {
    $this->upsert_lead($user['first_name'], $user['last_name'], $user['company_name'], $user['phone'], $user['email']);
    $user['case'] = $case;
    Emails_Factory::sendUserSoftRegisteredEmail($user);
  }

  /**
   * Upserts lead into SalesForce
   *
   * @param String     $first_name
   * @param String     $last_name
   * @param String     $company
   * @param String     $phone
   * @param String     $email
   * @param String     $employees
   * @param String     $enquiry
  */
  private function upsert_lead($first_name, $last_name, $company, $phone, $email, $employees = null, $enquiry = null)
  {
    $url = "https://www.salesforce.com/servlet/servlet.WebToLead?encoding=UTF-8";
    $fields = array(
      'oid'=>urlencode('xxxxxx'),
      'retURL'=>urlencode('/public/login/?callback=true'),
      'first_name'=>urlencode($first_name),
      'last_name'=>urlencode($last_name),
      'company'=>urlencode($company),
      'phone'=>urlencode($phone),
      'email'=>urlencode($email)
    );
    
    if (($employees === null) and ($enquiry === null)) {
      $fields['description'] = urlencode('Attempt to register');
    } else {
      $fields['description'] = urlencode('Number of employees: ' . $employees . '; Enquiry details: ' . $enquiry);
    }

    //url-ify the data for the POST
    $fields_string = '';
    foreach($fields as $key=>$value) { $fields_string .= $key.'='.$value.'&'; }
    rtrim($fields_string,'&');
    //open connection
    $ch = curl_init();
    //set the url, number of POST vars, POST data
    curl_setopt($ch,CURLOPT_URL,$url);
    curl_setopt($ch,CURLOPT_POST,count($fields));
    curl_setopt($ch,CURLOPT_POSTFIELDS,$fields_string);
    //execute post
    $result = curl_exec($ch);
    //close connection
    curl_close($ch);
  }


}

?>