script.mod_j2products.php

<?php
/**
 * @package     Joomla.Site
 * @subpackage  mod_j2products
 * @author      Gopi
 * @copyright   Copyright (C) 2023 Open Source Matters, Inc. All rights reserved.
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */
defined('_JEXEC') or die('Restricted access');
class Mod_j2productsInstallerScript {
    function preflight( $type, $parent )
    {
        $app = \Joomla\CMS\Factory::getApplication();
        if (version_compare(JVERSION, '3.99.99', 'lt')) {
            $app->enqueueMessage("You are using an old version of Joomla. This module requires Joomla 4.0.0 or later.");
            return false;
        }
        if (!\Joomla\CMS\Component\ComponentHelper::isEnabled('com_j2store')) {
            $app->enqueueMessage('J2Store not found. Please install J2Store before installing this module');
            return false;
        }

        $version_file = JPATH_ADMINISTRATOR . '/components/com_j2store/version.php';
        if (\Joomla\CMS\Filesystem\File::exists($version_file)) {
            require_once($version_file);
            // abort if the current J2Store release is older
            if (version_compare(J2STORE_VERSION, '4.0.3', 'lt')) {
                $app->enqueueMessage('You are using an old version of J2Store. Please upgrade to the latest version 4.0.3');
                return false;
            }
        } else {
            $app->enqueueMessage('J2Store not found or the version file is not found. Make sure that you have installed J2Store before installing this module');
            return false;
        }
    }
}