class.ChallengeMenuController.php

<?php
/**
 * Hackademic-CMS/controller/class.ChallengeMenuController.php
 *
 * Hackademic Challenge Menu Controller
 * Class for creating the Challenge Main Menu
 *
 * Copyright (c) 2012 OWASP
 *
 * LICENSE:
 *
 * This file is part of Hackademic CMS
 * (https://www.owasp.org/index.php/OWASP_Hackademic_Challenges_Project).
 *
 * Hackademic CMS is free software: you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software
 * Foundation, either version 2 of the License, or (at your option) any later
 * version.
 *
 * Hackademic CMS is distributed in the hope that it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
 * PARTICULAR PURPOSE.  See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * Hackademic CMS.  If not, see <http://www.gnu.org/licenses/>.
 *
 * PHP Version 5.
 *
 * @author    Pragya Gupta <pragya18nsit@gmail.com>
 * @author    Konstantinos Papapanagiotou <conpap@gmail.com>
 * @copyright 2012 OWASP
 * @license   GNU General Public License http://www.gnu.org/licenses/gpl.html
 */
require_once HACKADEMIC_PATH."model/common/class.Debug.php";
require_once HACKADEMIC_PATH."model/common/class.Challenge.php";
require_once HACKADEMIC_PATH."/controller/class.HackademicController.php";
require_once HACKADEMIC_PATH."/admin/model/class.Classes.php";

class ChallengeMenuController
{

    public static function go()
    {
        $username = HackademicController::getLoggedInUser();
        $user = User::findByUserName($username);
        if (!$user) {
            return;
        }
        if (Session::isAdmin() || Session::isTeacher()) {
            $challenges=Challenge::getChallengesFrontend($user->id);
            $ch = array();
            $ch[" "] = $challenges;
            $challenges = $ch;

        } else {
            $challenges=Challenge::getChallengesAssigned($user->id);
        }
        $menu=array();
        if ($challenges != false) {
            foreach ($challenges as $class_id => $class_challenges) {
                $class = Classes::getClass($class_id);
                if ($class != false) {
                    $menu[$class->name] = array();
                } else {
                    continue;
                }

                foreach ($class_challenges as $challenge) {
                    $link = array ('id'=>$challenge->id,
                                             'title'=>$challenge->title,
                                             'class_id' => $class_id,
                                             'url'=>'challenges/'.$challenge->pkg_name.'/index.php');
                    array_push($menu[$class->name], $link);
                }
            }
        }
        return $menu;
    }
}