<?php
/**
 * ShortURL Plugin
 * based on redirect plugin
 *
 * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
 * @author     Andreas Gohr <andi@splitbrain.org>
 * @author     Frank Schiebel <frank@linuxmuster.net>
 */

// must be run within Dokuwiki
if(!defined('DOKU_INC')) die();

if(!defined('DOKU_PLUGIN')) define('DOKU_PLUGIN',DOKU_INC.'lib/plugins/');
require_once(DOKU_PLUGIN.'action.php');

class action_plugin_shorturl extends DokuWiki_Action_Plugin {

    /**
     * register the eventhandlers
     */
    function register(&$controller){
        $controller->register_hook('DOKUWIKI_STARTED',
                                   'AFTER',
                                   $this,
                                   'handle_start',
                                   array());
    }

    /**
     * handle event
     */
    function handle_start(&$event, $param){
        global $ID;
        global $ACT;

        if($ACT != 'show') return;

        $redirects = confToHash($this->getsavedir().'/shorturl.conf');
        if($redirects[$ID]){
            if(preg_match('/^https?:\/\//',$redirects[$ID])){
                send_redirect($redirects[$ID]);
            }else{
                if($this->getConf('showmsg')){
                    msg(sprintf($this->getLang('redirected'),hsc($ID)));
                }
                send_redirect(wl($redirects[$ID] ,'',true));
            }
            exit;
        } else {
            if ($_GET['generateShortURL'] != "" && auth_quickaclcheck($ID) >= AUTH_READ) {
                $shorturl =& plugin_load('helper', 'shorturl');
                if ($shorturl) {
                    $shortID = $shorturl->autoGenerateShortUrl($ID);
                }
            }
        }
    }

    /**
      * get savedir
      */
    function getsavedir() {
        global $conf;
        if ( $this->getConf('saveconftocachedir') ) {
            return rtrim($conf['savedir'],"/") . "/cache";
        } else {
            return dirname(__FILE__);
        }
    }

}