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
{
    public function __construct($a_obj_id)
    {
        global $DIC;

        $ilDB = $DIC['ilDB'];

        parent::__construct($a_obj_id);
        $this->db = $ilDB;
    }
    
    public static 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 static 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;
    }
    
    public static function _getCompleted($a_obj_id)
    {
        global $DIC;

        $ilDB = $DIC['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(ilDBConstants::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;
    }
    
    public function determineStatus($a_obj_id, $a_user_id, $a_obj = null)
    {
        global $DIC;

        $ilObjDataCache = $DIC['ilObjDataCache'];
        $ilDB = $DIC['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 $DIC;

        $ilObjDataCache = $DIC['ilObjDataCache'];
    
        switch ($ilObjDataCache->lookupType($a_obj_id)) {
            case 'crs':
            case 'grp':
                include_once './Services/Membership/classes/class.ilParticipants.php';
                return ilParticipants::getInstanceByObjId($a_obj_id)->getMembers();
        }
        
        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);
    }
}