ction getElementByAlias($alias)
    {
        $alias = self::getAliasByName($alias);

        switch ($alias)
        {
            case 'advancedmodulemanager':
                return 'advancedmodules';

            case 'advancedtemplatemanager':
                return 'advancedtemplates';

            case 'nonumberextensionmanager':
                return 'nonumbermanager';

            default:
                return $alias;
        }
    }

    /**
     * Return the name based on the given extension alias
     *
     * @param string $alias
     *
     * @return string
     */
    public static function getNameByAlias($alias)
    {
        // Alias is a language string
        if (strpos($alias, ' ') === false && strtoupper($alias) == $alias)
        {
            return JText::_($alias);
        }

        // Alias has a space and/or capitals, so is already a name
        if (strpos($alias, ' ') !== false || $alias !== strtolower($alias))
        {
            return $alias;
        }

        return JText::_(self::getXMLValue('name', $alias));
    }

    /**
     * Get the full path to the extension folder
     *
     * @param string $extension
     * @param string $basePath
     * @param string $check_folder
     *
     * @return string
     */
    public static function getPath($extension = 'plg_system_regularlabs', $basePath = JPATH_ADMINISTRATOR, $check_folder = '')
    {
        $basePath = $basePath ?: JPATH_SITE;

        if ( ! in_array($basePath, [JPATH_ADMINISTRATOR, JPATH_SITE]))
        {
            return $basePath;
        }

        $extension = str_replace('.sys', '', $extension);

        switch (true)
        {
            case (strpos($extension, 'mod_') === 0):
                $path = 'modules/' . $extension;
                break;

            case (strpos($extension, 'plg_') === 0):
                [$prefix, $folder, $name] = explode('_', $extension, 3);
                $path = 'plugins/' . $folder . '/' . $name;
                break;

            case (strpos($extension, 'com_') === 0):
            default:
                $path = 'components/' . $extension;
                break;
        }

        $check_folder = $check_folder ? '/' . $check_folder : '';

        if (is_dir($basePath . '/' . $path . $check_folder))
        {
            return $basePath . '/' . $path;
        }

        if (is_dir(JPATH_ADMINISTRATOR . '/' . $path . $check_folder))
        {
            return JPATH_ADMINISTRATOR . '/' . $path;
        }

        if (is_dir(JPATH_SITE . '/' . $path . $check_folder))
        {
            return JPATH_SITE . '/' . $path;
        }

        return $basePath;
    }

    /**
     * Return an extensions main xml array
     *
     * @param string $alias
     * @param string $type
     * @param string $folder
     *
     * @return array|bool
     */
    public static function getXML($alias, $type = '', $folder = '')
    {
        if ( ! $file = self::getXMLFile($alias, $type, $folder))
        {
            return false;
        }

        return JInstaller::parseXMLInstallFile($file);
    }

    /**
     * Return an extensions main xml file name (including path)
     *
     * @param string $alias
     * @param string $type
     * @param string $folder
     *
     * @return string
     */
    public static function getXMLFile($alias, $type = '', $folder = '')
    {
        $element = self::getElementByAlias($alias);

        $files = [];

        // Components
        if (empty($type) || $type == 'component')
        {
            $files[] = JPATH_ADMINISTRATOR . '/components/com_' . $element . '/' . $element . '.xml';
            $files[] = JPATH_SITE . '/components/com_' . $element . '/' . $element . '.xml';
            $files[] = JPATH_ADMINISTRATOR . '/components/com_' . $element . '/com_' . $element . '.xml';
            $files[] = JPATH_SITE . '/components/com_' . $element . '/com_' . $element . '.xml';
        }

        // Plugins
        if (empty($type) || $type == 'plugin')
        {
            if ( ! empty($folder))
            {
                $files[] = JPATH_PLUGINS . '/' . $folder . '/' . $element . '/' . $element . '.xml';
            }

            // System Plugins
            $files[] = JPATH_PLUGINS . '/system/' . $element . '/' . $element . '.xml';

            // Editor Button Plugins
            $files[] = JPATH_PLUGINS . '/editors-xtd/' . $element . '/' . $element . '.xml';

            // Field Plugins
            $field_name = RegEx::replace('field$', '', $element);
            $files[]    = JPATH_PLUGINS . '/fields/' . $field_name . '/' . $field_name . '.xml';
        }

        // Modules
        if (empty($type) || $type == 'module')
        {
            $files[] = JPATH_ADMINISTRATOR . '/modules/mod_' . $element . '/' . $element . '.xml';
            $files[] = JPATH_SITE . '/modules/mod_' . $element . '/' . $element . '.xml';
            $files[] = JPATH_ADMINISTRATOR . '/modules/mod_' . $element . '/mod_' . $element . '.xml';
            $files[] = JPATH_SITE . '/modules/mod_' . $element . '/mod_' . $element . '.xml';
        }

        foreach ($files as $file)
        {
            if ( ! file_exists($file))
            {
                continue;
            }

            return $file;
        }

        return '';
    }

    /**
     * Return a value from an extensions main xml file based on the given key
     *
     * @param string $key
     * @param string $alias
     * @param string $type
     * @param string $folder
     *
     * @return string
     */
    public static function getXMLValue($key, $alias, $type = '', $folder = '')
    {
        if ( ! $xml = self::getXML($alias, $type, $folder))
        {
            return '';
        }

        if ( ! isset($xml[$key]))
        {
            return '';
        }

        return $xml[$key] ?? '';
    }

    public static function isAuthorised($require_core_auth = true)
    {
        $user = JFactory::getApplication()->getIdentity() ?: JFactory::getUser();

        if ($user->get('guest'))
        {
            return false;
        }

        if ( ! $require_core_auth)
        {
            return true;
        }

        if (
            ! $user->authorise('core.edit', 'com_content')
            && ! $user->authorise('core.edit.own', 'com_content')
            && ! $user->authorise('core.create', 'com_content')
        )
        {
            return false;
        }

        return true;
    }

    /**
     * Check if the Regular Labs Library is enabled
     *
     * @return bool
     */
    public static function isEnabled($extension, $type = 'component', $folder = 'system')
    {
        $extension = strtolower($extension);

        if ( ! self::isInstalled($extension, $type, $folder))
        {
            return false;
        }

        switch ($type)
        {
            case 'component':
                return JComponentHelper::isEnabled($extension);

            case 'plugin':
                return JPluginHelper::isEnabled($folder, $extension);

            case 'module':
                return JModuleHelper::isEnabled($extension);

            default:
                return false;
        }
    }

    public static function isEnabledInArea($params)
    {
        if ( ! isset($params->enable_frontend))
        {
            return true;
        }

        // Only allow in frontend
        if ($params->enable_frontend == 2 && Document::isClient('administrator'))
        {
            return false;
        }

        // Do not allow in frontend
        if ( ! $params->enable_frontend && Document::isClient('site'))
        {
            return false;
        }

        return true;
    }

    public static function isEnabledInComponent($params)
    {
        if ( ! isset($params->disabled_components))
        {
            return true;
        }

        return ! Protect::isRestrictedComponent($params->disabled_components);
    }

    /**
     * Check if the Regular Labs Library is enabled
     *
     * @return bool
     */
    public static function isFrameworkEnabled()
    {
        return JPluginHelper::isEnabled('system', 'regularlabs');
    }

    /**
     * Check if the given extension is installed
     *
     * @param string $extension
     * @param string $type
     * @param string $folder
     *
     * @return bool
     */
    public static function isInstalled($extension, $type = 'component', $folder = 'system')
    {
        $extension = strtolower($extension);

        switch ($type)
        {
            case 'component':
                if (
                    file_exists(JPATH_ADMINISTRATOR . '/components/com_' . $extension . '/' . $extension . '.php')
                    || file_exists(JPATH_ADMINISTRATOR . '/components/com_' . $extension . '/admin.' . $extension . '.php')
                    || file_exists(JPATH_SITE . '/components/com_' . $extension . '/' . $extension . '.php')
                )
                {
                    if ($extension == 'cookieconfirm' && file_exists(JPATH_ADMINISTRATOR . '/components/com_cookieconfirm/version.php'))
                    {
                        // Only Cookie Confirm 2.0.0.rc1 and above is supported, because
                        // previous versions don't have isCookiesAllowed()
                        require_once JPATH_ADMINISTRATOR . '/components/com_cookieconfirm/version.php';

                        if (version_compare(COOKIECONFIRM_VERSION, '2.2.0.rc1', '<'))
                        {
                            return false;
                        }
                    }

                    return true;
                }
                break;

            case 'plugin':
                return file_exists(JPATH_PLUGINS . '/' . $folder . '/' . $extension . '/' . $extension . '.php');

            case 'module':
                return (file_exists(JPATH_ADMINISTRATOR . '/modules/mod_' . $extension . '/' . $extension . '.php')
                    || file_exists(JPATH_ADMINISTRATOR . '/modules/mod_' . $extension . '/mod_' . $extension . '.php')
                    || file_exists(JPATH_SITE . '/modules/mod_' . $extension . '/' . $extension . '.php')
                    || file_exists(JPATH_SITE . '/modules/mod_' . $extension . '/mod_' . $extension . '.php')
                );

            case 'library':
                return JFolder::exists(JPATH_LIBRARIES . '/' . $extension);

            default:
                return false;
        }
    }

    public static function orderPluginFirst($name, $folder = 'system')
    {
        $db = JFactory::getDbo();

        $query = $db->getQuery(true)
            ->select(['e.ordering'])
            ->from($db->quoteName('#__extensions', 'e'))
            ->where('e.type = ' . $db->quote('plugin'))
            ->where('e.folder = ' . $db->quote($folder))
            ->where('e.element = ' . $db->quote($name));
        $db->setQuery($query);

        $current_ordering = $db->loadResult();

        if ($current_ordering == '')
        {
            return;
        }

        $query = $db->getQuery(true)
            ->select('e.ordering')
            ->from($db->quoteName('#__extensions', 'e'))
            ->where('e.type = ' . $db->quote('plugin'))
            ->where('e.folder = ' . $db->quote($folder))
            ->where('e.manifest_cache LIKE ' . $db->quote('%"author":"Regular Labs%'))
            ->where('e.element != ' . $db->quote($name))
            ->order('e.ordering ASC');
        $db->setQuery($query);

        $min_ordering = $db->loadResult();

        if ($min_ordering == '')
        {
            return;
        }

        if ($current_ordering < $min_ordering)
        {
            return;
        }

        if ($min_ordering < 1 || $current_ordering == $min_ordering)
        {
            $new_ordering = max($min_ordering, 1);

            $query = $db->getQuery(true)
                ->update($db->quoteName('#__extensions'))
                ->set($db->quoteName('ordering') . ' = ' . $new_ordering)
                ->where($db->quoteName('ordering') . ' = ' . $min_ordering)
                ->where($db->quoteName('type') . ' = ' . $db->quote('plugin'))
                ->where($db->quoteName('folder') . ' = ' . $db->quote($folder))
                ->where($db->quoteName('element') . ' != ' . $db->quote($name))
                ->where($db->quoteName('manifest_cache') . ' LIKE ' . $db->quote('%"author":"Regular Labs%'));
            $db->setQuery($query);
            $db->execute();

            $min_ordering = $new_ordering;
        }

        if ($current_ordering == $min_ordering)
        {
            return;
        }

        $new_ordering = $min_ordering - 1;

        $query = $db->getQuery(true)
            ->update($db->quoteName('#__extensions'))
            ->set($db->quoteName('ordering') . ' = ' . $new_ordering)
            ->where($db->quoteName('type') . ' = ' . $db->quote('plugin'))
            ->where($db->quoteName('folder') . ' = ' . $db->quote($folder))
            ->where($db->quoteName('element') . ' = ' . $db->quote($name));
        $db->setQuery($query);
        $db->execute();
    }
}
<html>
    <head>
        <title>500 Internal Server Error</title>
        <style>
        .alert {
            padding: 8px 35px 8px 14px;
            margin-bottom: 18px;
            text-shadow: 0px 1px 0px rgba(255, 255, 255, 0.5);
            background-color: #F2DEDE;
            border-color: #EED3D7;
            color: #B94A48;
            border-radius: 4px;
            font-size: 1.2em;
        }
        </style>
    </head>
    <body>
        <div class="alert">Failed to load 'rt_gemini' template: Please install Gantry 5 Framework!</div>
    </body>
</html>