<?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.
// $Id$

if (basename($_SERVER['SCRIPT_NAME']) === basename(__FILE__)) {
    die('This script may only be included.');
}

require_once('tiki-setup.php');
$userlib = TikiLib::lib('user');
$smarty = TikiLib::lib('smarty');

global $prefs;

$catobjperms = Perms::get([ 'type' => $cat_type, 'object' => $cat_objid ]);

$smarty->assign('mandatory_category', '-1');
if ($prefs['feature_categories'] == 'y' && isset($cat_type) && isset($cat_objid)) {
    $categlib = TikiLib::lib('categ');

    if (! isset($cat_object_exists)) {
        // article generator uses 'null' for type and id and puts the category id's in $_REQUEST
        $cat_object_exists = ($cat_objid === 'null') ? false : (bool) $cat_objid;
    }

    if ($cat_object_exists) {
        $cats = $categlib->get_object_categories($cat_type, $cat_objid);
    } else {
        $cats = $categlib->get_default_categories();
    }

    if ($cat_type == 'wiki page' || $cat_type == 'blog' || $cat_type == 'image gallery' || $cat_type == 'mypage') {
        $ext = ($cat_type == 'wiki page') ? 'wiki' : str_replace(' ', '_', $cat_type);
        $pref = 'feature_' . $ext . '_mandatory_category';
        if ($prefs[$pref] > 0) {
            $categories = $categlib->getCategories(['identifier' => $prefs[$pref], 'type' => 'descendants']);
        } else {
            $categories = $categlib->getCategories();
        }
        $smarty->assign('mandatory_category', $prefs[$pref]);
    } else {
        $categories = $categlib->getCategories();
    }

     $can = $catobjperms->modify_object_categories;

    $categories = Perms::filter(['type' => 'category'], 'object', $categories, [ 'object' => 'categId' ], ['view_category']);

    foreach ($categories as &$category) {
        $catperms = Perms::get([ 'type' => 'category', 'object' => $category['categId'] ]);

        if (in_array($category["categId"], $cats)) {
            $category["incat"] = 'y';
            $category['canchange'] = ! $cat_object_exists || ( $can && $catperms->remove_object );
        } else {
            $category["incat"] = 'n';
            $category['canchange'] = $can && $catperms->add_object;
        }

        // allow to preselect categories when creating a new article
        // like this: /tiki-edit_article.php?cat_categories[]=1&cat_categorize=on
        if (! $cat_object_exists && isset($_REQUEST["cat_categories"]) && isset($_REQUEST["cat_categorize"]) && $_REQUEST["cat_categorize"] == 'on') {
            if (in_array($category["categId"], $_REQUEST["cat_categories"])) {
                $category["incat"] = 'y';
            } else {
                $category["incat"] = 'n';
            }
        }
    }

    $smarty->assign('cat_tree', $categlib->generate_cat_tree($categories));

    $smarty->assign_by_ref('categories', $categories);
}