<?php
/**
 * @package         Regular Labs Library
 * @version         23.7.24631
 * 
 * @author          Peter van Westen <info@regularlabs.com>
 * @link            https://regularlabs.com
 * @copyright       Copyright © 2023 Regular Labs All Rights Reserved
 * @license         GNU General Public License version 2 or later
 */

namespace RegularLabs\Library\Condition;

defined('_JEXEC') or die;

use RegularLabs\Library\Condition;
use RegularLabs\Library\MobileDetect;
use RegularLabs\Library\RegEx;

/**
 * Class Agent
 * @package RegularLabs\Library\Condition
 */
abstract class Agent extends Condition
{
    var $agent     = null;
    var $device    = null;
    var $is_mobile = false;

    /**
     * isDesktop
     */
    public function isDesktop()
    {
        return $this->getDevice() == 'desktop';
    }

    /**
     * isMobile
     */
    public function isMobile()
    {
        return $this->getDevice() == 'mobile';
    }

    /**
     * isPhone
     */
    public function isPhone()
    {
        return $this->isMobile();
    }

    /**
     * isTablet
     */
    public function isTablet()
    {
        return $this->getDevice() == 'tablet';
    }

    /**
     * passBrowser
     */
    public function passBrowser($browser = '')
    {
        if ( ! $browser)
        {
            return false;
        }

        if ($browser == 'mobile')
        {
            return $this->isMobile();
        }

        // also check for _ instead of .
        $browser = RegEx::replace('\\\.([^\]])', '[\._]\1', $browser);
        $browser = str_replace('\.]', '\._]', $browser);

        return RegEx::match($browser, $this->getAgent(), $match, 'i');
    }

    /**
     * getAgent
     */
    private function getAgent()
    {
        if ( ! is_null($this->agent))
        {
            return $this->agent;
        }

        $detect = new MobileDetect;
        $agent  = $detect->getUserAgent();

        switch (true)
        {
            case (stripos($agent, 'Trident') !== false):
                // Add MSIE to IE11 and others missing it
                $agent = RegEx::replace('(Trident/[0-9\.]+;.*rv[: ]([0-9\.]+))', '\1 MSIE \2', $agent);
                break;

            case (stripos($agent, 'Chrome') !== false):
                // Remove Safari from Chrome
                $agent = RegEx::replace('(Chrome/.*)Safari/[0-9\.]*', '\1', $agent);
                // Add MSIE to IE Edge and remove Chrome from IE Edge
                $agent = RegEx::replace('Chrome/.*(Edge/[0-9])', 'MSIE \1', $agent);
                break;

            case (stripos($agent, 'Opera') !== false):
                $agent = RegEx::replace('(Opera/.*)Version/', '\1Opera/', $agent);
                break;
        }

        $this->agent = $agent;

        return $this->agent;
    }

    /**
     * setDevice
     */
    private function getDevice()
    {
        if ( ! is_null($this->device))
        {
            return $this->device;
        }

        $detect = new MobileDetect;

        $this->is_mobile = $detect->isMobile();

        switch (true)
        {
            case($detect->isTablet()):
                $this->device = 'tablet';
                break;

            case ($detect->isMobile()):
                $this->device = 'mobile';
                break;

            default:
                $this->device = 'desktop';
        }

        return $this->device;
    }
}
