<?php

namespace Campaign\Controller\Plugin;

use Zend\Mvc\Controller\Plugin\AbstractPlugin;


class CampaignPlugin extends AbstractPlugin
{

    private static function ifMobileDetect()
    {
        // taken from http://mobiforge.com/developing/story/lightweight-device-detection-php

        $mobile = '0';

        if (preg_match('/(up.browser|up.link|mmp|symbian|smartphone|midp|wap|phone|android)/i', strtolower($_SERVER['HTTP_USER_AGENT']))) {
            $mobile++;
        }

        if ((strpos(strtolower($_SERVER['HTTP_ACCEPT']), 'application/vnd.wap.xhtml+xml') > 0) or ((isset($_SERVER['HTTP_X_WAP_PROFILE']) or isset($_SERVER['HTTP_PROFILE'])))) {
            $mobile++;
        }

        $mobile_ua = strtolower(substr($_SERVER['HTTP_USER_AGENT'], 0, 4));
        $mobile_agents = array(
            'w3c ', 'acs-', 'alav', 'alca', 'amoi', 'audi', 'avan', 'benq', 'bird', 'blac',
            'blaz', 'brew', 'cell', 'cldc', 'cmd-', 'dang', 'doco', 'eric', 'hipt', 'inno',
            'ipaq', 'java', 'jigs', 'kddi', 'keji', 'leno', 'lg-c', 'lg-d', 'lg-g', 'lge-',
            'maui', 'maxo', 'midp', 'mits', 'mmef', 'mobi', 'mot-', 'moto', 'mwbp', 'nec-',
            'newt', 'noki', 'oper', 'palm', 'pana', 'pant', 'phil', 'play', 'port', 'prox',
            'qwap', 'sage', 'sams', 'sany', 'sch-', 'sec-', 'send', 'seri', 'sgh-', 'shar',
            'sie-', 'siem', 'smal', 'smar', 'sony', 'sph-', 'symb', 't-mo', 'teli', 'tim-',
            'tosh', 'tsm-', 'upg1', 'upsi', 'vk-v', 'voda', 'wap-', 'wapa', 'wapi', 'wapp',
            'wapr', 'webc', 'winw', 'winw', 'xda ', 'xda-');

        if (in_array($mobile_ua, $mobile_agents)) {
            $mobile++;
        }

        if (isset($_SERVER['ALL_HTTP'])) {
            if (strpos(strtolower($_SERVER['ALL_HTTP']), 'OperaMini') > 0) {
                $mobile++;
            }
        }

        if (strpos(strtolower($_SERVER['HTTP_USER_AGENT']), 'windows') > 0) {
            $mobile = 0;
        }

        return $mobile;
    }

    public function facebook($config)
    {
        // DEREK, in order to operate the campaigns through FB, you should uncomment session_start();
//        session_start();

        /* GET FACEBOOK WARMED UP */

        $facebook = new Facebook($config);
        die('ouaaissss');
        $FacebookInfo = array();
        $FacebookInfo['fbuser'] = FALSE;
        $FacebookInfo['like'] = FALSE;
        $FacebookInfo['isfb'] = FALSE;
        if (self::ifMobileDetect() == 0) {
            if (isset($_REQUEST['signed_request'])) {
                $FacebookInfo['isfb'] = true;

                function parse_signed_request($signed_request, $secret)
                {
                    list($encoded_sig, $payload) = explode('.', $signed_request, 2);

                    // decode the data
                    $sig = base64_url_decode($encoded_sig);
                    $data = json_decode(base64_url_decode($payload), true);

                    if (strtoupper($data['algorithm']) !== 'HMAC-SHA256') {
                        error_log('Unknown algorithm. Expected HMAC-SHA256');
                        return null;
                    }

                    // check sig
                    $expected_sig = hash_hmac('sha256', $payload, $secret, $raw = true);
                    if ($sig !== $expected_sig) {
                        error_log('Bad Signed JSON signature!');
                        return null;
                    }

                    return $data;
                }

                function base64_url_decode($input)
                {
                    return base64_decode(strtr($input, '-_', '+/'));
                }

                // GET LOGGED IN USER DETAILS
                $user = parse_signed_request($_REQUEST['signed_request'], $config['secret']);
                // var_dump($user);
                //GET PAGE ID
                if (isset($user['page']['id'])) {
                    $_SESSION['pageId'] = $user['page']['id'];
                } else {
                    $_SESSION['pageId'] = false;
                }
                $pageId = $_SESSION['pageId'];

                // THESE VARIABLES CAN BE USED TO SEND THE USER BACK TO THE APP WHEN BEING LOGGED IN / APPROVING APP / OTHER TRICKERY WHERE THEY HAVE TO LEAVE THE SITE
                $state = rand(100000, 999999);
                $redirectUrl = "https%3A%2F%2Fwww.facebook.com%2Fpages%2Fnull%2F$pageId%2Fapp_$appId";
                $loginUrl = urldecode("https://www.facebook.com/dialog/oauth?client_id=$appId&redirect_url=$redirectUrl&state=$state");

                // SEE IF PAGE IS LIKED
                if ($user['page']['liked'] != NULL) {
                    $_SESSION['like'] = true;
                } else {
                    $_SESSION['like'] = false;
                }

                $FacebookInfo['like'] = $_SESSION['like'];

                //GET USER LANGUAGE
                $locale = explode('_', $user['user']['locale']);
                $_SESSION['language'] = $locale[0];
                $language = $_SESSION['language'];

                //GET USER ID
                if (isset($user['user_id'])) {
                    $_SESSION['fbuser'] = $user['user_id'];
                } else {
                    $_SESSION['fbuser'] = false;
                }
                $FacebookInfo['fbuser'] = $_SESSION['fbuser'];

                //GET USER NAME
                if ($FacebookInfo['fbuser'] != false) {
                    $user_info = json_decode(file_get_contents("http://graph.facebook.com/".$FacebookInfo['fbuser']));
                    $_SESSION['name'] = $user_info->name;
                } else {
                    $_SESSION['name'] = false;
                    return $FacebookInfo;
                }
                $name = $_SESSION['name'];
            } else {
                $FacebookInfo['isfb'] = false;
                return $FacebookInfo;
            }
        } else {
            $FacebookInfo['isfb'] = false;
            return $FacebookInfo;
        }
    }

}