<?php
/**
 * ------------------------------------------------------------------------
 * JA T3 System Plugin for Joomla 2.5
 * ------------------------------------------------------------------------
 * Copyright (C) 2004-2011 J.O.O.M Solutions Co., Ltd. All Rights Reserved.
 * @license - GNU/GPL, http://www.gnu.org/licenses/gpl.html
 * Author: J.O.O.M Solutions Co., Ltd
 * Websites: http://www.joomlart.com - http://www.joomlancers.com
 * ------------------------------------------------------------------------
 */

// No direct access
defined('_JEXEC') or die;

/**
 * T3AjaxSite
 *
 * @package JAT3.Core
 */
class T3AjaxSite
{
    /**
     * Respond compression css/js file
     *
     * @return void
     */
    function gzip()
    {
        $file = JRequest::getVar('jat3file');
        // Clean filepath
        $file = preg_replace('#[?\#]+.*$#', '', $file);
        // Check exists
        $filepath = T3Path::path(dirname($file)) . DS . basename($file);
        if (! is_file($filepath)) {
            echo "File $file $filepath not exist";
            return;
        }
        $type = strtolower(JRequest::getCmd('jat3type', 'css'));
        // Check type must be in css or js
        if (! in_array($type, array ('css', 'js' ))) {
            echo "Type $type not support";
            return;
        }
        // Make sure the type of $file is the same with $type
        if (! preg_match('#\.' . $type . '$#', $filepath)) {
            echo "Type $type not match";
            return;
        }

        jimport('joomla.filesystem.file');
        $data = @JFile::read($filepath);
        if (! $data) {
            echo "File $filepath empty";
            return;
        }

        if ($type == 'js') {
            $type = 'javascript';
        }
        JResponse::setHeader('Content-Type', "text/$type;", true);
        // Set cache time
        JResponse::setHeader('Cache-Control', "private", true);
        $offset = 365 * 24 * 60 * 60; //whenever the content is changed, the file name is changed also. Therefore we could set the cache time long.
        JResponse::setHeader('Expires', gmdate("D, d M Y H:i:s", time() + $offset) . " GMT", true);
        JResponse::allowCache(true);
        JResponse::setBody($data);
        echo JResponse::toString(1);
    }
}