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<?php
/**
 * @package         Regular Labs Library
 * @version         23.9.3039
 * 
 * @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 Joomla\CMS\Factory as JFactory;
use Joomla\CMS\Language\LanguageHelper as JLanguageHelper;
use Joomla\CMS\Uri\Uri as JUri;
use RegularLabs\Library\Condition;
use RegularLabs\Library\RegEx;
use RegularLabs\Library\StringHelper;

/**
 * Class HomePage
 *
 * @package RegularLabs\Library\Condition
 */
class HomePage extends Condition
{
    public function pass()
    {
        $home = JFactory::getApplication()->getMenu('site')->getDefault(JFactory::getLanguage()->getTag());

        // return if option or other set values do not match the homepage menu item values
        if ($this->request->option)
        {
            // check if option is different to home menu
            if ( ! $home || ! isset($home->query['option']) || $home->query['option'] != $this->request->option)
            {
                return $this->_(false);
            }

            if ( ! $this->request->option)
            {
                // set the view/task/layout in the menu item to empty if not set
                $home->query['view']   ??= '';
                $home->query['task']   ??= '';
                $home->query['layout'] ??= '';
            }

            // check set values against home menu query items
            foreach ($home->query as $k => $v)
            {
                if (
                    (isset($this->request->{$k}) && $this->request->{$k} != $v)
                    || (
                        ( ! isset($this->request->{$k}) || in_array($v, ['virtuemart', 'mijoshop']))
                        && JFactory::getApplication()->input->get($k) != $v
                    )
                )
                {
                    return $this->_(false);
                }
            }

            // check post values against home menu params
            foreach ($home->params->toObject() as $k => $v)
            {
                if (
                    ($v && isset($_POST[$k]) && $_POST[$k] != $v)
                    || ( ! $v && isset($_POST[$k]) && $_POST[$k])
                )
                {
                    return $this->_(false);
                }
            }
        }

        $pass = $this->checkPass($home);

        if ( ! $pass)
        {
            $pass = $this->checkPass($home, true);
        }

        return $this->_($pass);
    }

    private function checkPass(&$home, $addlang = false)
    {
        $uri = JUri::getInstance();

        if ($addlang)
        {
            $sef = $uri->getVar('lang');

            if (empty($sef))
            {
                $langs = array_keys(JLanguageHelper::getLanguages('sef'));
                $path  = StringHelper::substr(
                    $uri->toString(['scheme', 'user', 'pass', 'host', 'port', 'path']),
                    StringHelper::strlen($uri->base())
                );
                $path  = RegEx::replace('^index\.php/?', '', $path);
                $parts = explode('/', $path);
                $part  = reset($parts);

                if (in_array($part, $langs))
                {
                    $sef = $part;
                }
            }

            if (empty($sef))
            {
                return false;
            }
        }

        $query = $uri->toString(['query']);

        if (strpos($query, 'option=') === false && strpos($query, 'Itemid=') === false)
        {
            $url = $uri->toString(['host', 'path']);
        }
        else
        {
            $url = $uri->toString(['host', 'path', 'query']);
        }

        // remove the www.
        $url = RegEx::replace('^www\.', '', $url);
        // replace ampersand chars
        $url = str_replace('&amp;', '&', $url);
        // remove any language vars
        $url = RegEx::replace('((\?)lang=[a-z-_]*(&|$)|&lang=[a-z-_]*)', '\2', $url);
        // remove trailing nonsense
        $url = trim(RegEx::replace('/?\??&?$', '', $url));
        // remove the index.php/
        $url = RegEx::replace('/index\.php(/|$)', '/', $url);
        // remove trailing /
        $url = trim(RegEx::replace('/$', '', $url));

        $root = JUri::root();

        // remove the http(s)
        $root = RegEx::replace('^.*?://', '', $root);
        // remove the www.
        $root = RegEx::replace('^www\.', '', $root);
        //remove the port
        $root = RegEx::replace(':[0-9]+', '', $root);
        // so also passes on urls with trailing /, ?, &, /?, etc...
        $root = RegEx::replace('(Itemid=[0-9]*).*^', '\1', $root);
        // remove trailing /
        $root = trim(RegEx::replace('/$', '', $root));

        if ($addlang)
        {
            $root .= '/' . $sef;
        }

        /* Pass urls:
         * [root]
         */
        $regex = '^' . $root . '$';

        if (RegEx::match($regex, $url))
        {
            return true;
        }

        /* Pass urls:
         * [root]?Itemid=[menu-id]
         * [root]/?Itemid=[menu-id]
         * [root]/index.php?Itemid=[menu-id]
         * [root]/[menu-alias]
         * [root]/[menu-alias]?Itemid=[menu-id]
         * [root]/index.php?[menu-alias]
         * [root]/index.php?[menu-alias]?Itemid=[menu-id]
         * [root]/[menu-link]
         * [root]/[menu-link]&Itemid=[menu-id]
         */
        $regex = '^' . $root
            . '(/('
            . 'index\.php'
            . '|'
            . '(index\.php\?)?' . RegEx::quote($home->alias)
            . '|'
            . RegEx::quote($home->link)
            . ')?)?'
            . '(/?[\?&]Itemid=' . (int) $home->id . ')?'
            . '$';

        return RegEx::match($regex, $url);
    }
}