class.ilLPStatusManualByTutor.php

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<?php
/*
        +-----------------------------------------------------------------------------+
        | ILIAS open source                                                           |
        +-----------------------------------------------------------------------------+
        | Copyright (c) 1998-2008 ILIAS open source, University of Cologne            |
        |                                                                             |
        | This program 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.                      |
        |                                                                             |
        | This program 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 this program; if not, write to the Free Software                 |
        | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. |
        +-----------------------------------------------------------------------------+
*/

include_once 'Services/Tracking/classes/class.ilLPStatus.php';

class ilLPStatusManualByTutor extends ilLPStatus
{
        function __construct($a_obj_id)
        {
                global $ilDB;

                parent::ilLPStatus($a_obj_id);
                $this->db = $ilDB;
        }
        
        public function _getNotAttempted($a_obj_id)
        {               
                $users = array();
        
                $members = self::getMembers($a_obj_id);
                if($members)
                {
                        // diff in progress and completed (use stored result in LPStatusWrapper)
                        $users = array_diff($members, ilLPStatusWrapper::_getInProgress($a_obj_id));
                        $users = array_diff($users, ilLPStatusWrapper::_getCompleted($a_obj_id));                       
                }
                
                return $users;
        }
        
        public function _getInProgress($a_obj_id)
        {               
                include_once './Services/Tracking/classes/class.ilChangeEvent.php';
                $users = ilChangeEvent::lookupUsersInProgress($a_obj_id);
                
                // Exclude all users with status completed.
                $users = array_diff((array) $users,ilLPStatusWrapper::_getCompleted($a_obj_id));

                if($users)
                {
                        // Exclude all non members
                        $users = array_intersect(self::getMembers($a_obj_id), (array)$users);
                }
                
                return $users;
        }
        
        function _getCompleted($a_obj_id)
        {
                global $ilDB;
                
                $usr_ids = array();

                $query = "SELECT DISTINCT(usr_id) user_id FROM ut_lp_marks ".
                        "WHERE obj_id = ".$ilDB->quote($a_obj_id ,'integer')." ".
                        "AND completed = '1' ";

                $res = $ilDB->query($query);
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        $usr_ids[] = $row->user_id;
                }
                
                if($usr_ids)
                {
                        // Exclude all non members
                        $usr_ids = array_intersect(self::getMembers($a_obj_id), (array)$usr_ids);
                }

                return $usr_ids;
        }
        
        function determineStatus($a_obj_id, $a_user_id, $a_obj = null)
        {
                global $ilObjDataCache, $ilDB;
                
                $status = self::LP_STATUS_NOT_ATTEMPTED_NUM;
                switch ($ilObjDataCache->lookupType($a_obj_id))
                {
                        case "crs":
                        case "grp":
                                // completed?
                                $set = $ilDB->query($q = "SELECT usr_id FROM ut_lp_marks ".
                                        "WHERE obj_id = ".$ilDB->quote($a_obj_id ,'integer')." ".
                                        "AND usr_id = ".$ilDB->quote($a_user_id ,'integer')." ".
                                        "AND completed = '1' ");
                                if ($rec = $ilDB->fetchAssoc($set))
                                {
                                        $status = self::LP_STATUS_COMPLETED_NUM;
                                }
                                else
                                {                               
                                        include_once './Services/Tracking/classes/class.ilChangeEvent.php';
                                        if (ilChangeEvent::hasAccessed($a_obj_id, $a_user_id))
                                        {
                                                $status = self::LP_STATUS_IN_PROGRESS_NUM;
                                        }
                                }
                                break;
                }
                return $status;
        }
        
        protected static function getMembers($a_obj_id)
        {
                global $ilObjDataCache;
        
                switch($ilObjDataCache->lookupType($a_obj_id))
                {
                        case 'crs':
                                include_once 'Modules/Course/classes/class.ilCourseParticipants.php';
                                $member_obj = ilCourseParticipants::_getInstanceByObjId($a_obj_id);
                                return $member_obj->getMembers();
                                
                        case 'grp':
                                include_once './Modules/Group/classes/class.ilObjGroup.php';
                                return ilObjGroup::_getMembers($a_obj_id);                      
                }
                
                return array();
        }
        
        public static function _lookupCompletedForObject($a_obj_id, $a_user_ids = null)
        {
                if(!$a_user_ids)
                {
                        $a_user_ids = self::getMembers($a_obj_id);
                        if(!$a_user_ids)
                        {
                                return array();
                        }
                }
                return self::_lookupStatusForObject($a_obj_id, self::LP_STATUS_COMPLETED_NUM, $a_user_ids);
        }
        
        public static function _lookupFailedForObject($a_obj_id, $a_user_ids = null)
        {
                return array();
        }
        
        public static function _lookupInProgressForObject($a_obj_id, $a_user_ids = null)
        {
                if(!$a_user_ids)
                {
                        $a_user_ids = self::getMembers($a_obj_id);
                        if(!$a_user_ids)
                        {
                                return array();
                        }
                }
                return self::_lookupStatusForObject($a_obj_id, self::LP_STATUS_IN_PROGRESS_NUM, $a_user_ids);
        }       
}
?>