script.php

<?php defined('_JEXEC') or die;
/*
 * @package     Joomla.Site
 * @subpackage  Templates.master3lite
 * @copyright   Copyright (C) Aleksey A. Morozov. All rights reserved.
 * @license     GNU General Public License version 3 or later; see http://www.gnu.org/licenses/gpl-3.0.txt
 */

use Joomla\CMS\Factory;
use Joomla\CMS\Version;
use Joomla\CMS\Filesystem\Path;
use Joomla\CMS\Language\Text;
use Joomla\CMS\Installer\Installer;
use Joomla\CMS\Installer\InstallerHelper;
use Joomla\Archive\Archive;

class master3liteInstallerScript
{
    function preflight($type, $parent)
    {
        if (strtolower($type) === 'uninstall') {
            return true;
        }

        $minJoomlaVersion = $parent->get('manifest')->attributes()->version[0];

        if (!class_exists('Joomla\CMS\Version')) {
            JFactory::getApplication()->enqueueMessage(JText::sprintf('J_JOOMLA_COMPATIBLE', JText::_($parent->manifest->name[0]), $minJoomlaVersion), 'error');
            return false;
        }

        if (strtolower($type) === 'install' && Version::MAJOR_VERSION < 4) {
            $msg = '';
            $name = Text::_($parent->manifest->name[0]);
            $minPhpVersion = $parent->manifest->php_minimum[0];

            $ver = new Version();

            if (version_compare($ver->getShortVersion(), $minJoomlaVersion, 'lt')) {
                $msg .= Text::sprintf('J_JOOMLA_COMPATIBLE', $name, $minJoomlaVersion);
            }

            if (version_compare(phpversion(), $minPhpVersion, 'lt')) {
                $msg .= Text::sprintf('J_PHP_COMPATIBLE', $name, $minPhpVersion);
            }

            if ($msg) {
                Factory::getApplication()->enqueueMessage($msg, 'error');
                return false;
            }
        }
    }

    function postflight($type, $parent)
    {
        if (strtolower($type) === 'uninstall') {
            return true;
        }

        $result = $this->installUikit3($parent);
        if ($result !== true) {
            Factory::getApplication()->enqueueMessage(Text::sprintf('TPL_MASTER3_UIKIT3_INSTALLATION_ERROR', $result), 'error');
            return false;
        }

        $oldUikit = Path::clean(JPATH_ROOT . '/templates/master3lite/uikit');
        if (is_dir($oldUikit)) {
            \JFolder::delete($oldUikit);
            InstallerHelper::cleanupInstall($oldUikit);
        }
    }

    private function installUikit3($parent)
    {
        $isUikit3 = false;
        $actualVersion = (string) $parent->manifest->uikit_actual[0];

        $manifestFile = Path::clean(JPATH_ADMINISTRATOR . '/manifests/files/file_uikit3.xml');

        if (file_exists(Path::clean($manifestFile))) {
            $xml = @simplexml_load_file($manifestFile);
            if ($xml) {
                $xml = (array) $xml;
                $uikitVersion = $xml['version'];
                if (!version_compare($actualVersion, $uikitVersion, 'gt')) {
                    $isUikit3 = true;
                }
            }
            unset($xml);
        }

        if (!$isUikit3) {

            $tmp = Factory::getConfig()->get('tmp_path');
            $uikitFile = 'https://master3.alekvolsk.info/files/uikit3_v' . $actualVersion . '_j3.zip';
            $tmpFile = Path::clean($tmp . '/uikit3_v' . $actualVersion . '_j3.zip');
            $extDir = Path::clean($tmp . '/' . uniqid('install_'));

            $contents = file_get_contents($uikitFile);
            if ($contents === false) {
                return Text::sprintf('TPL_MASTER3_UIKIT3_IE_FAILED_DOWNLOAD', $uikitFile);
            }

            $resultContents = file_put_contents($tmpFile, $contents);
            if ($resultContents == false) {
                return Text::sprintf('TPL_MASTER3_UIKIT3_IE_FAILED_INSTALLATION', $tmpFile);
            }

            if (!file_exists($tmpFile)) {
                return Text::sprintf('TPL_MASTER3_UIKIT3_IE_NOT_EXISTS', $tmpFile);
            }

            $archive = new Archive(['tmp_path' => $tmp]);
            try {
                $archive->extract($tmpFile, $extDir);
            } catch (\Exception $e) {
                return Text::sprintf('TPL_MASTER3_UIKIT3_IE_FAILER_UNZIP', $tmpFile, $extDir, $e->getMesage());
            }

            $installer = new Installer();
            $installer->setPath('source', $extDir);
            if (!$installer->findManifest()) {
                InstallerHelper::cleanupInstall($tmpFile, $extDir);
                return Text::_('TPL_MASTER3_UIKIT3_IE_INCORRECT_MANIFEST');
            }

            if (!$installer->install($extDir)) {
                InstallerHelper::cleanupInstall($tmpFile, $extDir);
                return Text::_('TPL_MASTER3_UIKIT3_IE_INSTALLER_ERROR');
            }

            InstallerHelper::cleanupInstall($tmpFile, $extDir);
        }

        return true;
    }
}