<?php 

require('includes/application_top.php');

$sToken = ZENDESK_TOKEN;
$sReturnURL = 'http://' . ZENDESK_DOMAIN . '/access/remote/' ; // http://YOURDOMAIN.zendesk.com/access/remote/


if (!defined('ZENDESK_TOKEN')) {
	echo "please install and configure your Zendesk Connector";
	exit();
}

if ($session_started == false) {
  zen_redirect(zen_href_link(FILENAME_COOKIE_USAGE));
}

if (!isset($_SESSION['customer_id'])) {

  zen_redirect(zen_href_link(FILENAME_LOGIN, '', 'SSL'));
}

$error = false;

// parameters to set
// http://www.zendesk.com/api/remote_authentication
$sFullName = '';
$sEmail = '';
$sExternalID = ''; // unique userID
$sOrganization = ''; // optional

// when logged in, following data is in session
// $customer_id

// get user information
$check_customer_query_sql = "SELECT customers_id, customers_firstname, customers_lastname, customers_email_address
                       FROM " . TABLE_CUSTOMERS . "
                       WHERE customers_id = :customers_id";

$check_customer_query  =$db->bindVars($check_customer_query_sql, ':customers_id', $_SESSION['customer_id'], 'string');
$check_customer = $db->Execute($check_customer_query);

if (!$check_customer->RecordCount()) {
  $error = true;
} 

$sFullName = $check_customer->fields['customers_firstname'] . ' ' . $check_customer->fields['customers_lastname'];
$sEmail = $check_customer->fields['customers_email_address'];
$sExternalID = $customer_id;

// Request.QueryString("timestamp")
// The timestamp sent to your authentication script by Zendesk
$querytimestamp = $HTTP_GET_VARS['timestamp'];


$sMessage = utf8_encode($sFullName) . $sEmail . $sExternalID . $sOrganization . $sToken . $querytimestamp;
$sDigest = md5($sMessage);


$sURL = $sReturnURL .
				"?name=" . utf8_encode(urlencode($sFullName)) .
				"&email=" . urlencode($sEmail) .
        "&external_id=" . $sExternalID .
        "&timestamp=" . $querytimestamp .
        "&hash=" .$sDigest;

zen_redirect($sURL);
?>