<?php

include_once APPPATH . 'libraries/facebook-php-sdk/facebook.php';

class Test extends Controller
{
    private $facebook;

    public function __construct()
    {
        parent::__construct();

        parse_str($_SERVER['QUERY_STRING'], $_GET);

        session_id(preg_replace("/[^A-Za-z0-9-]/", "", $_GET['fb_sig_iframe_key']));
        session_start();
    }

    public function index()
    {
        $this->facebook = new Facebook(array(
            'appId'  => $this->config->item('facebook_api_key'),
            'secret' => $this->config->item('facebook_secret_key'),
            'cookie' => true,
            'domain' => 'phpfour.com'
        ));
        
        $session = $this->facebook->getSession();
        
        if (!$session) {

            $url = $this->facebook->getLoginUrl(array('canvas' => 1, 'fbconnect' => 0));
            echo "<script type='text/javascript'>top.location.href = '$url';</script>";

        } else {

            try {

                $uid = $this->facebook->getUser();
                $me = $this->facebook->api('/me');
 
                $updated = date("l, F j, Y", strtotime($me['updated_time']));
 
                echo "Hello " . $me['name'] . "<br />";
                echo "You last updated your profile on " . $updated;

            } catch (FacebookApiException $e) {
                
                echo "Error:" . print_r($e, true);
                
            }
        }

    }
}