<?php

// (c) Copyright by authors of the Tiki Wiki CMS Groupware Project
//
// All Rights Reserved. See copyright.txt for details and a complete list of authors.
// Licensed under the GNU LESSER GENERAL PUBLIC LICENSE. See license.txt for details.
// $Id$

//this script may only be included - so its better to die if called directly.
if (strpos($_SERVER['SCRIPT_NAME'], basename(__FILE__)) !== false) {
    header('location: index.php');
    exit;
}

class ExportLib extends TikiLib
{

    public function MakeWikiZip()
    {
        global $tikidomain;
        $zipname = 'wikidb.zip';
        include_once('lib/tar.class.php');
        $tar = new tar();
        $query = 'select `pageName` from `tiki_pages` order by ' . $this->convertSortMode('pageName_asc');
        $result = $this->query($query, []);

        while ($res = $result->fetchRow()) {
            $page = $res['pageName'];
            $content = $this->export_wiki_page($page, 0);
            $tar->addData($page, $content, $this->now);
        }
        $dump = 'dump';

        if ($tikidomain) {
            $dump .= "/$tikidomain";
        }

        $tar->toTar("$dump/export.tar", false);

        return '';
    }

    public function export_wiki_page($pageName, $nversions = 1, $showLatest = false)
    {
        global $prefs;

        $head = '';
        $head .= 'Date: ' . $this->date_format('%a, %e %b %Y %H:%M:%S %O') . "\r\n";
        $head .= sprintf("Mime-Version: 1.0 (Produced by Tiki)\r\n");
        $info = $this->get_page_info($pageName);

        if ($prefs['flaggedrev_approval'] == 'y') {
            $flaggedrevisionlib = TikiLib::lib('flaggedrevision');
            if (! $showLatest && $flaggedrevisionlib->page_requires_approval($pageName)) {
                $data = $flaggedrevisionlib->get_version_with($pageName, 'moderation', 'OK');
                $info['data'] = '';
                if ($data) {
                    $info['data'] = $data['data'];
                }
            }
        }

        $parts = [];
        $parts[] = MimeifyPageRevision($info);

        if ($nversions > 1 || $nversions == 0) {
            $iter = $this->get_page_history($pageName);
            foreach ($iter as $revision) {
                $parts[] = MimeifyPageRevision($revision);

                if ($nversions > 0 && count($parts) >= $nversions) {
                    break;
                }
            }
        }
        if (count($parts) > 1) {
            return $head . MimeMultipart($parts);
        }

        assert($parts);
        return $head . $parts[0];
    }

    // Returns all the versions for this page
    // without the data itself
    public function get_page_history($page)
    {
        $query = 'select `pageName`, `description`, `version`, `lastModif`, `user`, `ip`, `data`, `comment`' .
                        ' from `tiki_history` where `pageName`=? order by ' . $this->convertSortMode('version_desc');
        $result = $this->query($query, [$page]);
        $ret = [];

        while ($res = $result->fetchRow()) {
            $aux = [];
            $aux['version'] = $res['version'];
            $aux['lastModif'] = $res['lastModif'];
            $aux['user'] = $res['user'];
            $aux['ip'] = $res['ip'];
            $aux['data'] = $res['data'];
            $aux['pageName'] = $res['pageName'];
            $aux['description'] = $res['description'];
            $aux['comment'] = $res['comment'];
            //$aux["percent"] = levenshtein($res["data"],$actual);
            $ret[] = $aux;
        }
        return $ret;
    }
}
$exportlib = new ExportLib();