<?php
/**
 * Simple AJAX stub: CacheControl
 *
 *
 * $Id$
 *
 * @author gERD Schaufelberger <gerd@php-tools.net>
 * @license PHP License
 * @package WB
 * @subpackage base
 */

WBClass::load('WBAjax');

/**
 * Simple AJAX stub: CacheControl
 *
 * Flush caches
 *
 * @version 0.1.1
 * @package WB
 * @subpackage base
 */
class WBAjax_CacheControl extends WBAjax
{
    /**
     * Config
     * @var WBConfig
     */
    protected $config;

    /**
     * Second construcotr
     * 
     * Called by constructer of super class.
     * @see include/WB/WBAjax#init()
     */
    protected function init()
    {
    }
    
    /**
     * Trigger Event
     * 
     * @return string zero
     */
    protected function flush()
    {
        // check permissions
        if (!$this->user->isAuthenticated()) {
            return 0;
        }
        if (!$this->user->isInGroup('admin')) {
            return 0;
        }

        $domain =   $this->req->get('domain', '');
        if (!is_array($domain)) {
            $domain =   explode(',', $domain);
        }

        // flush domains
        $domain =   array(
                        'general',
                        'template',
                        'css',
                        'javascript'
                        );

        foreach ($domain as $d) {
            $this->flushDomain($d);
        }

        return 0;
    }

    private function flushDomain($domain)
    {
        $cmd    =   'find %s/var/cache/%s -type f -delete';
        $cmd    =   sprintf($cmd, WBParam::get('wb/dir/base'), $domain);
        exec($cmd, $out, $ret);
        // echo $cmd . "\n";
    }

}