<?php

/**
 * @package tikiwiki
 */

// (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.
// $Id$

global $prefs;

require 'tiki-setup.php';
include_once('lib/wiki/renderlib.php');

$access->check_feature(['feature_multilingual', 'feature_multilingual_one_page']);

$multilinguallib = TikiLib::lib('multilingual');
$wikilib = TikiLib::lib('wiki');

if (! isset($_REQUEST['page'])) {
    header('Location: tiki-index.php');
    die;
}

$pages = [];

$_REQUEST['page'] = $wikilib->get_page_by_slug($_REQUEST['page']);

$requested = $tikilib->get_page_info($_REQUEST['page']);
$page_id = $requested['page_id'];
$pages[] = $requested;
$unordered = [];
$excluded = [];

$page = $_REQUEST['page'];
$smarty->assign_by_ref('page', $page);

// If the page doesn't exist
if (empty($requested)) {
    // First, try cleaning the url to see if it matches an existing page.
    $wikilib->clean_url_suffix_and_redirect($page, $type = '', $path = '', $prefix = '');

    // If after cleaning the url, the page does not exist then display an error
    $likepages = $wikilib->get_like_pages($page);
    // if we have exactly one match, redirect to it
    if ($prefs['feature_wiki_1like_redirection'] == 'y' && count($likepages) == 1  && ! $isUserPage) {
        $access->redirect('tiki-all_languages.php?page=' . urlencode($likepages[0]));
    }
    $smarty->assign_by_ref('likepages', $likepages);
    $smarty->assign('create', $isUserPage ? 'n' : 'y');
    $access->display_error($page, tra('Page cannot be found'), '404');
}

$preferred_langs = $multilinguallib->preferredLangs();


if (count($preferred_langs) == 1) {
   // If user only has one language, then assume he wants to see all
   // languages supported by the site (otherwise, why would he have asked
   // for all languages). This has the advantage that users can see multiple
   // languages even if they haven't registered and set their language preferences,
   // or if they haven't logged in. Yet, if they have registered, set language
   // preferences, and logged in, they can limit the displayed languages
   // to only those that they want.
    $preferred_langs = $prefs['available_languages'];
}

// Sort languages according to user's prefences
foreach ($multilinguallib->getTrads('wiki page', $page_id) as $row) {
    if ($row['objId'] != $page_id && in_array($row['lang'], $preferred_langs)) {
        $unordered[ $row['lang'] ] = $tikilib->get_page_info_from_id($row['objId']);
    } elseif ($row['lang'] != $requested['lang']) {
        $excluded[] = $row['lang'];
    }
}

foreach ($preferred_langs as $lang) {
    if (array_key_exists($lang, $unordered)) {
        $pages[] = $unordered[$lang];
    }
}

$contents = [];

$show_langs_side_by_side = false;
if (count($pages) <= 2) {
   // If only two languages, its best to show
   // them side by side for easier comparison
   // (as opposed to one on top of the other).
   // But for more than two languages, side by
   // side is not possible, cause not enough real estate
    $show_langs_side_by_side = true;
}


foreach (array_reverse($pages) as $id => $info) {
    $page = $info['pageName'];
    $section = 'wiki page';

    $renderer = new WikiRenderer($info, $user);
    $renderer->applyPermissions();

    if ($tiki_p_view == 'y') {
        $renderer->runSetups();

        $contents[] = $smarty->fetch('extends:layouts/internal/layout_view.tpl|tiki-show_page.tpl');

        if ($id === count($pages) - 1) {
            $renderer->restoreAll();
        }
    }
}

$contents = array_reverse($contents);

$smarty->assign('metatag_robots', 'NOINDEX, NOFOLLOW');
$smarty->assign('side_by_side', $show_langs_side_by_side);
$smarty->assign('excluded', $excluded);
$smarty->assign('content', $contents);
$smarty->assign('mid', 'tiki-all_languages.tpl');
$smarty->display('tiki.tpl');