<?php

class Qs_Doc extends Qs_Sys_Doc
{
    protected $_compressJson;

    protected $_smartyPluginPaths = array(
        'lib/Smarty/Smarty/plugins',
        'lib/Smarty/app_plugins',
        'Qs/Smarty/plugins'
    );

    public function addItemFirst($item, $groupName = null)
    {
        $names = array('script', 'inlineScript', 'stylesheet', 'initFunction');
        foreach ($names as $name) {
            if (isset($item[$name]) && is_array($item[$name])){
                foreach ($item[$name] as $headItem ) {
                    call_user_func_array(array($this, 'add' . ucfirst($name)), $headItem);
                }
            }
        }
        if (null === $groupName) {
            $groupName = $this->getGroupName();
        }
        if (!isset($this->_content[$groupName])) {
            $this->_content[$groupName] = array();
        }

        array_unshift($this->_content[$groupName], new Qs_Doc_Item($item));

        return $this;
    }

    public function response($code, $message = null)
    {
        $response = $message;
        if ($message && !Qs_Request::isXmlHttpRequest()) {
            $item = array(
                'message' => $message,
            );
            $this->assign('item', new Qs_Doc_Item($item));
            $this->setLayoutTemplate('clean.tpl');
            $this->sendHeaders();
            $response = $this->fetch();
        }

        Qs_Http::response($code, $response);
    }

    public function displayJson($data)
    {
        header('Cache-Control: no-store, no-cache, must-revalidate, private');
        header('Pragma: no-cache');
        header('Content-Type: application/x-javascript; charset=utf-8');
        $json = json_encode($data);
        if ($this->_getCompressJson()) {
            header('Content-Encoding: gzip');
            $json =  gzencode($json, 9);
        }
        die($json);
    }

    protected function _getCompressJson()
    {
        if (null === $this->_compressJson) {
            if (strpos(Qs_Request::getHeader('ACCEPT-ENCODING'), 'gzip') === false) {
                $this->_setCompressJson(false);
            } else {
                $this->_setCompressJson(true);
            }
        }
        return $this->_compressJson;
    }

    protected function _setCompressJson($flag)
    {
        $this->_compressJson = (bool) $flag;
        return $this;
    }

}