<?php
/*
 * Copyright © ProgramCMS. All rights reserved.
 * See COPYING.txt for license details.
 *
 * Developed by Mohamed EL QUCHIRI <elquchiri@gmail.com>
 */

namespace ProgramCms\CoreBundle\Agent;

/**
 * Class Detector
 * @package ProgramCms\CoreBundle\Agent
 */
class Detector
{
    /**
     * @var string
     */
    private string $httpUserAgent;

    /**
     * Browser constructor.
     */
    public function __construct()
    {
        $this->httpUserAgent = $_SERVER['HTTP_USER_AGENT'];
    }

    public function getOS() {

        $user_agent = $this->httpUserAgent;

        $os_platform =   "Bilinmeyen İşletim Sistemi";
        $os_array =   array(
            '/windows nt 10/i'      =>  'Windows 10',
            '/windows nt 6.3/i'     =>  'Windows 8.1',
            '/windows nt 6.2/i'     =>  'Windows 8',
            '/windows nt 6.1/i'     =>  'Windows 7',
            '/windows nt 6.0/i'     =>  'Windows Vista',
            '/windows nt 5.2/i'     =>  'Windows Server 2003/XP x64',
            '/windows nt 5.1/i'     =>  'Windows XP',
            '/windows xp/i'         =>  'Windows XP',
            '/windows nt 5.0/i'     =>  'Windows 2000',
            '/windows me/i'         =>  'Windows ME',
            '/win98/i'              =>  'Windows 98',
            '/win95/i'              =>  'Windows 95',
            '/win16/i'              =>  'Windows 3.11',
            '/macintosh|mac os x/i' =>  'Mac OS X',
            '/mac_powerpc/i'        =>  'Mac OS 9',
            '/linux/i'              =>  'Linux',
            '/ubuntu/i'             =>  'Ubuntu',
            '/iphone/i'             =>  'iPhone',
            '/ipod/i'               =>  'iPod',
            '/ipad/i'               =>  'iPad',
            '/android/i'            =>  'Android',
            '/blackberry/i'         =>  'BlackBerry',
            '/webos/i'              =>  'Mobile'
        );

        foreach ( $os_array as $regex => $value ) {
            if ( preg_match($regex, $user_agent ) ) {
                $os_platform = $value;
            }
        }
        return $os_platform;
    }

    /**
     * Get Browser Information
     * @return array
     */
    public function getBrowser(): array {
        $u_agent = $this->httpUserAgent;
        $bname = 'Unknown';
        $platform = 'Unknown';
        $version= "";

        // First get the platform?
        if (preg_match('/linux/i', $u_agent)) {
            $platform = 'linux';
        } elseif (preg_match('/macintosh|mac os x/i', $u_agent)) {
            $platform = 'mac';
        } elseif (preg_match('/windows|win32/i', $u_agent)) {
            $platform = 'windows';
        }

        // Next get the name of the useragent yes seperately and for good reason
        if(preg_match('/MSIE/i',$u_agent) && !preg_match('/Opera/i',$u_agent)) {
            $bname = 'Internet Explorer';
            $ub = "MSIE";
        } elseif(preg_match('/Firefox/i',$u_agent)) {
            $bname = 'Mozilla Firefox';
            $ub = "Firefox";
        } elseif(preg_match('/Chrome/i',$u_agent)) {
            $bname = 'Google Chrome';
            $ub = "Chrome";
        } elseif(preg_match('/Safari/i',$u_agent)) {
            $bname = 'Apple Safari';
            $ub = "Safari";
        } elseif(preg_match('/Opera/i',$u_agent)) {
            $bname = 'Opera';
            $ub = "Opera";
        } elseif(preg_match('/Netscape/i',$u_agent)) {
            $bname = 'Netscape';
            $ub = "Netscape";
        }

        // finally get the correct version number
        $known = array('Version', $ub, 'other');
        $pattern = '#(?<browser>' . join('|', $known) . ')[/ ]+(?<version>[0-9.|a-zA-Z.]*)#';
        if (!preg_match_all($pattern, $u_agent, $matches)) {
            // we have no matching number just continue
        }

        // see how many we have
        $i = count($matches['browser']);
        if ($i != 1) {
            //we will have two since we are not using 'other' argument yet
            //see if version is before or after the name
            if (strripos($u_agent,"Version") < strripos($u_agent,$ub)){
                $version= $matches['version'][0];
            } else {
                $version= $matches['version'][1];
            }
        } else {
            $version= $matches['version'][0];
        }

        // check if we have a number
        if ($version==null || $version=="") {$version="?";}

        return array(
            'userAgent' => $u_agent,
            'name'      => $bname,
            'version'   => $version,
            'platform'  => $platform,
            'pattern'    => $pattern
        );
    }
}