<?php

class Qs_Smarty_Settings extends Qs_Smarty
{
    protected static $_resourceName = 'Qs_Settings';

    public static function getInstance()
    {
        if (null === self::$_instance) {
            self::$_instance = new Qs_Smarty_Settings();
        }
        return self::$_instance;
    }

    public static function setTemplate($template)
    {
        parent::setTemplate($template);
        parent::setTemplateName($template);
    }

    public static function render($data)
    {
        self::_checkTemplate();

        self::getObject()->register_resource(self::$_resourceName,
            array(self::getInstance(), "getTemplate", "getTimestamp", "getSecure", "getTrusted"));

        self::_assignVariables($data);

        $template = self::getObject()->fetch(self::$_resourceName . ':' . self::$_templateName);
        return $template;
    }

    public function getTemplate($tpl_name, &$tpl_source, &$smarty_obj)
    {
        $tpl_source = App_Settings_Obj::get(self::$_template);
        return empty($tpl_source) ? false : true;
    }

    public function getTimestamp($tpl_name, &$tpl_timestamp, &$smarty_obj)
    {
        $tpl_timestamp = strtotime(App_Settings_Obj::getChanged(self::$_template));
        return true;
    }
}