<?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.
// $Id$

namespace Tiki\Modules;

use TikiLib;

/**
 * Class responsible for all modules permission logic
 */
class Permissions
{
    /**
     * Return page permissions
     *
     * @return array
     */
    public function getPagePermissions()
    {
        $url = $_SERVER['SCRIPT_NAME'];

        if (null == $objectType = $this->findObjectType($url)) {
            return null;
        }

        switch ($objectType) {
            case 'wiki page':
                $objectId = ! empty($_REQUEST['page']) ? $_REQUEST['page'] : null;
                break;
            case 'file gallery':
                $filegallib = TikiLib::lib('filegal');
                $objectId = ! empty($_REQUEST['galleryId']) ? $_REQUEST['galleryId'] : null;
                break;
            case 'tracker':
                $objectId = ! empty($_REQUEST['trackerId']) ? $_REQUEST['trackerId'] : null;
                $itemId = ! empty($_REQUEST['itemId']) ? $_REQUEST['itemId'] : null;
                if ($itemId) {
                    $objectId = $itemId;
                    $objectType = 'trackeritem';
                }
                break;
            case 'forum':
                $objectId = ! empty($_REQUEST['forumId']) ? $_REQUEST['forumId'] : null;
                break;
            case 'group':
                $objectId = ! empty($_REQUEST['group']) ? $_REQUEST['group'] : null;
                break;
            case 'articles':
                $objectId = ! empty($_REQUEST['articleId']) ? $_REQUEST['articleId'] : null;
                break;
            case 'blog':
                $objectId = ! empty($_REQUEST['blogId']) ? $_REQUEST['blogId'] : null;
                break;
            case 'calendar':
                $objectId = ! empty($_REQUEST['calendarId']) ? $_REQUEST['calendarId'] : null;
                break;
            case 'sheet':
                $objectId = ! empty($_REQUEST['sheetId']) ? $_REQUEST['sheetId'] : null;
                break;
        }

        $all = TikiLib::lib('user')->get_permissions(0, -1, 'permName_asc', '', $this->findPermType($objectType), '', true);

        $accessor = \Perms::get(['type' => $objectType, 'object' => $objectId]);
        $loaded = $accessor->getResolver()->dump();

        $results = [];

        foreach ($all['data'] as $permDef) {
            foreach ($loaded['perms'] as $perm => $groups) {
                if ($perm != str_replace('tiki_p_', '', $permDef['name'])) {
                    continue;
                }
                $results[$permDef['type']][$perm] = $groups;
            }
        }

        $loaded['perms'] = $results;
        return $loaded;
    }

    protected function findObjectType($url)
    {

        $objectPaths = [
            'wiki page' => [
                'tiki-index.php',
                'tiki-listpages.php',
                'tiki-editpage.php',
                'tiki-copypage.php',
                'tiki-pagehistory.php'
            ],
            'file gallery' => [
                'tiki-list_file_gallery.php'
            ],
            'tracker' => [
                'tiki-list_trackers.php',
                'tiki-view_tracker.php',
                'tiki-view_tracker_item.php',
                'tiki-admin_tracker_fields.php'
            ],
            'forum' => [
                'tiki-forums.php',
                'tiki-view_forum.php',
                'tiki-admin_forums.php',
                'tiki-forum_import.php'],
            'group' => [
                'tiki-admingroups.php'
            ],
            'articles' => [
                'tiki-list_articles.php',
                'tiki-view_articles.php',
                'tiki-edit_article.php',
                'tiki-read_article.php'
            ],
            'blog' => [
                'tiki-list_blogs.php',
                'tiki-edit_blog.php',
                'tiki-blog_post.php',
                'tiki-list_posts.php',
                'tiki-view_blog.php',
                'tiki-view_blog_post.php'
            ],
            'calendar' => [
                'tiki-calendar.php',
                'tiki-calendar_edit_item.php',
                'tiki-admin_calendars.php',
                'tiki-calendar_import.php'
            ],
            'sheet' => [
                'tiki-sheets.php',
                'tiki-view_sheets.php',
                'tiki-graph_sheet.php',
                'tiki-history_sheets.php',
                'tiki-export_sheet.php',
                'tiki-import_sheet.php',
            ],
        ];

        foreach ($objectPaths as $object => $paths) {
            foreach ($paths as $path) {
                if (strpos($url, $path) !== false) {
                    return $object;
                }
            }
        }

        return null;
    }

    protected function findPermType($objectType)
    {
        switch ($objectType) {
            case 'wiki page':
                return 'wiki';
            case 'file gallery':
                return 'file galleries';
            case 'tracker':
            case 'trackeritem':
                return 'trackers';
            case 'forum':
                return 'forums';
            case 'group':
                return 'group';
            case 'articles':
                return 'articles';
            case 'blog':
                return 'blogs';
            case 'calendar':
                return 'calendar';
            case 'sheet':
                return 'sheet';
        }
    }
}