class.ilCourseAgreement.php

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<?php
/*
        +-----------------------------------------------------------------------------+
        | ILIAS open source                                                           |
        +-----------------------------------------------------------------------------+
        | Copyright (c) 1998-2006 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/PrivacySecurity/classes/class.ilPrivacySettings.php');
include_once('Modules/Course/classes/Export/class.ilCourseDefinedFieldDefinition.php');


class ilCourseAgreement
{
        private $db;
        private $user_id;
        private $obj_id;
        
        private $privacy;
        
        private $accepted = false;
        private $acceptance_time = 0;
        
        public function __construct($a_usr_id,$a_obj_id)
        {
                global $ilDB;
                
                $this->db = $ilDB;
                $this->user_id = $a_usr_id;
                $this->obj_id = $a_obj_id;
                
                $this->privacy = ilPrivacySettings::_getInstance();
                
                if($this->privacy->confirmationRequired() or ilCourseDefinedFieldDefinition::_hasFields($this->obj_id))
                {
                        $this->read();
                }
        }
        
        public static function _readByObjId($a_obj_id)
        {
                global $ilDB;
                
                $query = "SELECT * FROM member_agreement ".
                        "WHERE obj_id = ".$ilDB->quote($a_obj_id);
                        
                $res = $ilDB->query($query);
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        $user_data[$row->usr_id]['accepted'] = $row->accepted;
                        $user_data[$row->usr_id]['acceptance_time'] = $row->acceptance_time;
                }
                return $user_data ? $user_data : array();                                       
        }
        
        public static function _hasAgreementsByObjId($a_obj_id)
        {
                global $ilDB;
                
                $query = "SELECT * FROM member_agreement ".
                        "WHERE obj_id = ".$ilDB->quote($a_obj_id)." ".
                        "AND accepted = 1";
                
                $res = $ilDB->query($query);
                return $res->numRows() ? true : false;
        }
        
        public static function _hasAgreements()
        {
                global $ilDB;
                
                $query = "SELECT * FROM member_agreement ".
                        "WHERE accepted = 1";
                
                $res = $ilDB->query($query);
                return $res->numRows() ? true : false;
        }

        public static function _hasAccepted($a_usr_id,$a_obj_id)
        {
                global $ilDB;
                
                $query = "SELECT accepted FROM member_agreement ".
                        "WHERE usr_id = ".$ilDB->quote($a_usr_id)." ".
                        "AND obj_id = ".$ilDB->quote($a_obj_id);
                $res = $ilDB->query($query);
                $row = $res->fetchRow(DB_FETCHMODE_OBJECT);
                
                return $row->accepted == 1 ? true : false;
        }
        
        
        public static function _deleteByUser($a_usr_id)
        {
                global $ilDB;
                
                $query = "DELETE FROM member_agreement ".
                        "WHERE usr_id =".$ilDB->quote($a_usr_id)." ";
                $ilDB->query($query);
                
                return true;
        }
        
        public static function _deleteByObjId($a_obj_id)
        {
                global $ilDB;
                
                $query = "DELETE FROM member_agreement ".
                        "WHERE obj_id =".$ilDB->quote($a_obj_id)." ";
                $ilDB->query($query);
                
                return true;
                
        }
        
        public static function _reset()
        {
                global $ilDB;
                
                $query = "UPDATE member_agreement SET accepted = 0 ";
                $ilDB->query($query);
                
                return true;
        }
        
        public static function _resetContainer($a_container_id)
        {
                global $ilDB;
                
                $query = "UPDATE member_agreement ".
                        "SET accepted = 0 ".
                        "WHERE obj_id = ".$ilDB->quote($a_container_id)." ";
                $ilDB->query($query);
                
                return true;
        }
        public function setAccepted($a_status)
        {
                $this->accepted = $a_status;
        }
        
        public function setAcceptanceTime($a_timest)
        {
                $this->acceptance_time = $a_timest;
        }
        public function agreementRequired()
        {
                if(!$this->privacy->confirmationRequired() and !ilCourseDefinedFieldDefinition::_hasFields($this->obj_id))
                {
                        return false;
                }
                return $this->accepted ? false : true;
        }
        
        public function isAccepted()
        {
                return (bool) $this->accepted;
        }
        
        public function getAcceptanceTime()
        {
                return $this->acceptance_time;
        }
        
        public function save()
        {
                $this->delete();
                
                $query = "INSERT INTO member_agreement ".
                        "SET usr_id = ".$this->db->quote($this->user_id).", ".
                        "obj_id = ".$this->db->quote($this->obj_id).", ".
                        "accepted = ".$this->db->quote((int) $this->isAccepted()).", ".
                        "acceptance_time = ".$this->db->quote($this->getAcceptanceTime());
                        
                $this->db->query($query);
                return true;    
        }
        
        public function delete()
        {
                $query = "DELETE FROM member_agreement ".
                        "WHERE usr_id = ".$this->db->quote($this->user_id)." ".
                        "AND obj_id = ".$this->db->quote($this->obj_id);
                
                $this->db->query($query);
                return true;                    
        }
        
        private function read()
        {
                $query = "SELECT * FROM member_agreement ".
                        "WHERE usr_id = ".$this->db->quote($this->user_id)." ".
                        "AND obj_id = ".$this->db->quote($this->obj_id)." ";
                        
                $res = $this->db->query($query);
                $row = $res->fetchRow(DB_FETCHMODE_OBJECT);
                $this->accepted = $row->accepted;
                $this->acceptance_time = $row->acceptance_time;
        }
}
?>