<?php
/**
 * AJAX call handler for searchindex plugin
 *
 * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
 * @author     Andreas Gohr <andi@splitbrain.org>
 */

//fix for Opera XMLHttpRequests
if(!count($_POST) && $HTTP_RAW_POST_DATA){
  parse_str($HTTP_RAW_POST_DATA, $_POST);
}

if(!defined('DOKU_INC')) define('DOKU_INC',realpath(dirname(__FILE__).'/../../../').'/');
if(!defined('DOKU_PLUGIN')) define('DOKU_PLUGIN',DOKU_INC.'lib/plugins/');
require_once(DOKU_INC.'inc/init.php');
require_once(DOKU_INC.'inc/common.php');
require_once(DOKU_INC.'inc/pageutils.php');
require_once(DOKU_INC.'inc/auth.php');
require_once(DOKU_INC.'inc/search.php');
require_once(DOKU_INC.'inc/indexer.php');
//close sesseion
session_write_close();

header('Content-Type: text/plain; charset=utf-8');

//we only work for admins!
if (auth_quickaclcheck($conf['start']) < AUTH_ADMIN){
    die('access denied');
}

//call the requested function
$call = 'ajax_'.$_POST['call'];
if(function_exists($call)){
    $call();
}else{
    print "The called function '".htmlspecialchars($call)."' does not exist!";
}

/**
 * Searches for pages
 *
 * @author Andreas Gohr <andi@splitbrain.org>
 */
function ajax_pagelist(){
    global $conf;
    $data = array();
    search($data,$conf['datadir'],'search_allpages',array());

    foreach($data as $val){
        print $val['id']."\n";
    }
}

/**
 * Clear all index files
 */
function ajax_clearindex(){
    global $conf;
    // keep running
    @ignore_user_abort(true);

    // try to aquire a lock
    $lock = $conf['lockdir'].'/_indexer.lock';
    while(!@mkdir($lock)){
        if(time()-@filemtime($lock) > 60*5){
            // looks like a stale lock - remove it
            @rmdir($lock);
        }else{
            print 'indexer is locked.';
            exit;
        }

    }

    io_saveFile($conf['indexdir'].'/page.idx','');
    io_saveFile($conf['indexdir'].'/title.idx','');
    $dir = @opendir($conf['indexdir']);
    if($dir!==false){
        while(($f = readdir($dir)) !== false){
            if(substr($f,-4)=='.idx' &&
               (substr($f,0,1)=='i' || substr($f,0,1)=='w'))
                @unlink($conf['indexdir']."/$f");
        }
    }

    // we're finished
    @rmdir($lock);

    print 1;
}

/**
 * Index the given page
 *
 * We're doing basicly the same as the real indexer but ignore the
 * last index time here
 */
function ajax_indexpage(){
    global $conf;

    if(!$_POST['page']){
        print 1;
        exit;
    }

    // keep running
    @ignore_user_abort(true);

    // try to aquire a lock
    $lock = $conf['lockdir'].'/_indexer.lock';
    while(!@mkdir($lock)){
        if(time()-@filemtime($lock) > 60*5){
            // looks like a stale lock - remove it
            @rmdir($lock);
        }else{
            print 'indexer is locked.';
            exit;
        }

    }

    // do the work
    idx_addPage($_POST['page']);

    // we're finished
    io_saveFile(metaFN($id,'.indexed'),'');
    @rmdir($lock);

    print 1;
}

//Setup VIM: ex: et ts=4 enc=utf-8 :