class.ilObjCourse.php

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<?php
/*
        +-----------------------------------------------------------------------------+
        | ILIAS open source                                                           |
        +-----------------------------------------------------------------------------+
        | Copyright (c) 1998-2001 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 ceven 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. |
        +-----------------------------------------------------------------------------+
*/

require_once "./Services/Container/classes/class.ilContainer.php";
include_once './Modules/Course/classes/class.ilCourseConstants.php';
include_once './Services/Membership/interfaces/interface.ilMembershipRegistrationCodes.php';

class ilObjCourse extends ilContainer implements ilMembershipRegistrationCodes
{

        const CAL_REG_START = 1;
        const CAL_REG_END = 2;
        const CAL_ACTIVATION_START = 3;
        const CAL_ACTIVATION_END = 4;
        
        const STATUS_DETERMINATION_LP = 1;
        const STATUS_DETERMINATION_MANUAL = 2;

        private $member_obj = null;
        private $members_obj = null;
        var $archives_obj;
        
        private $latitude = '';
        private $longitude = '';
        private $locationzoom = 0;
        private $enablemap = 0;
        
        private $session_limit = 0;
        private $session_prev = -1;
        private $session_next = -1;
        
        private $reg_access_code = '';
        private $reg_access_code_enabled = false;
        private $status_dt = null;
        
        private $mail_members = ilCourseConstants::MAIL_ALLOWED_ALL;
        
        private $auto_notification = true;

        function ilObjCourse($a_id = 0,$a_call_by_reference = true)
        {
                
                #define("ILIAS_MODULE","course");
                #define("KEEP_IMAGE_PATH",1);

                $this->SUBSCRIPTION_DEACTIVATED = 1;
                $this->SUBSCRIPTION_CONFIRMATION = 2;
                $this->SUBSCRIPTION_DIRECT = 3;
                $this->SUBSCRIPTION_PASSWORD = 4;
                $this->SUBSCRIPTION_AUTOSUBSCRIPTION = 5;
                $this->ARCHIVE_DISABLED = 1;
                $this->ARCHIVE_READ = 2;
                $this->ARCHIVE_DOWNLOAD = 3;
                $this->ABO_ENABLED = 1;
                $this->ABO_DISABLED = 0;
                $this->SHOW_MEMBERS_ENABLED = 1;
                $this->SHOW_MEMBERS_DISABLED = 0;
                $this->setStatusDetermination(self::STATUS_DETERMINATION_LP);

                $this->type = "crs";

                parent::__construct($a_id,$a_call_by_reference);

        }
        
        public static function lookupShowMembersEnabled($a_obj_id)
        {
                $query = 'SELECT show_members FROM crs_settings '.
                                'WHERE obj_id = '.$GLOBALS['ilDB']->quote($a_obj_id,'integer');
                $res = $GLOBALS['ilDB']->query($query);
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        return (bool) $row->show_members;
                }
                return false;
        }
        
        public function getRegistrationAccessCode()
        {
                return $this->reg_access_code;
        }
        
        public function setRegistrationAccessCode($a_code)
        {
                $this->reg_access_code = $a_code;
        }
        
        public function isRegistrationAccessCodeEnabled()
        {
                return (bool) $this->reg_access_code_enabled;
        }
        
        public function enableRegistrationAccessCode($a_status)
        {
                $this->reg_access_code_enabled = $a_status;
        }

        function getImportantInformation()
        {
                return $this->important;
        }
        function setImportantInformation($a_info)
        {
                $this->important = $a_info;
        }
        function getSyllabus()
        {
                return $this->syllabus;
        }
        function setSyllabus($a_syllabus)
        {
                $this->syllabus = $a_syllabus;
        }
        function getContactName()
        {
                return $this->contact_name;
        }
        function setContactName($a_cn)
        {
                $this->contact_name = $a_cn;
        }
        function getContactConsultation()
        {
                return $this->contact_consultation;
        }
        function setContactConsultation($a_value)
        {
                $this->contact_consultation = $a_value;
        }
        function getContactPhone()
        {
                return $this->contact_phone;
        }
        function setContactPhone($a_value)
        {
                $this->contact_phone = $a_value;
        }
        function getContactEmail()
        {
                return $this->contact_email;
        }
        function setContactEmail($a_value)
        {
                $this->contact_email = $a_value;
        }
        function getContactResponsibility()
        {
                return $this->contact_responsibility;
        }
        function setContactResponsibility($a_value)
        {
                $this->contact_responsibility = $a_value;
        }
        function getActivationType()
        {
                return (int) $this->activation_type;
        }
        function setActivationType($a_type)
        {
                // offline is separate property now
                if($a_type == IL_CRS_ACTIVATION_OFFLINE)
                {
                        $this->setOfflineStatus(true);
                        $a_type = IL_CRS_ACTIVATION_UNLIMITED;
                }
                
                $this->activation_type = $a_type;
        }
        function getActivationUnlimitedStatus()
        {
                return $this->activation_type == IL_CRS_ACTIVATION_UNLIMITED;           
        }       
        function getActivationStart()
        {
                return $this->activation_start ? $this->activation_start : time();
        }
        function setActivationStart($a_value)
        {
                $this->activation_start = $a_value;
        }
        function getActivationEnd()
        {
                return $this->activation_end ? $this->activation_end : mktime(0,0,0,12,12,date("Y",time())+2);
        }
        function setActivationEnd($a_value)
        {
                $this->activation_end = $a_value;
        }
        function getOfflineStatus()
        {
                return (bool)$this->activation_offline;
        }
        function setOfflineStatus($a_value)
        {
                $this->activation_offline = (bool) $a_value;
        }
        function setActivationVisibility($a_value)
        {
                $this->activation_visibility = (bool) $a_value;
        }
        function getActivationVisibility()
        {
                return $this->activation_visibility;
        }

        function getSubscriptionLimitationType()
        {
                return $this->subscription_limitation_type;
        }
        function setSubscriptionLimitationType($a_type)
        {
                $this->subscription_limitation_type = $a_type;
        }
        function getSubscriptionUnlimitedStatus()
        {
                return $this->subscription_limitation_type == IL_CRS_SUBSCRIPTION_UNLIMITED;
        } 
        function getSubscriptionStart()
        {
                return $this->subscription_start ? $this->subscription_start : time();
        }
        function setSubscriptionStart($a_value)
        {
                $this->subscription_start = $a_value;
        }
        function getSubscriptionEnd()
        {
                return $this->subscription_end ? $this->subscription_end : mktime(0,0,0,12,12,date("Y",time())+2);
        }
        function setSubscriptionEnd($a_value)
        {
                $this->subscription_end = $a_value;
        }
        function getSubscriptionType()
        {
                return $this->subscription_type ? $this->subscription_type : IL_CRS_SUBSCRIPTION_DIRECT;
                #return $this->subscription_type ? $this->subscription_type : $this->SUBSCRIPTION_DEACTIVATED;
        }
        function setSubscriptionType($a_value)
        {
                $this->subscription_type = $a_value;
        }
        function getSubscriptionPassword()
        {
                return $this->subscription_password;
        }
        function setSubscriptionPassword($a_value)
        {
                $this->subscription_password = $a_value;
        }
        function enabledObjectiveView()
        {
                return $this->view_mode == IL_CRS_VIEW_OBJECTIVE;
        }

        function enabledWaitingList()
        {
                return (bool) $this->waiting_list;
        }

        function enableWaitingList($a_status)
        {
                $this->waiting_list = (bool) $a_status;
        }

        function inSubscriptionTime()
        {
                if($this->getSubscriptionUnlimitedStatus())
                {
                        return true;
                }
                if(time() > $this->getSubscriptionStart() and time() < $this->getSubscriptionEnd())
                {
                        return true;
                }
                return false;
        }
        
        public function enableSessionLimit($a_status)
        {
                $this->session_limit = $a_status;
        }
        
        public function isSessionLimitEnabled()
        {
                return (bool) $this->session_limit;
        }
        
        public function enableSubscriptionMembershipLimitation($a_status)
        {
                $this->subscription_membership_limitation = $a_status;
        }

        public function setNumberOfPreviousSessions($a_num)
        {
                $this->session_prev = $a_num;
        }
        
        public function getNumberOfPreviousSessions()
        {
                return $this->session_prev;
        }
        
        public function setNumberOfNextSessions($a_num)
        {
                $this->session_next = $a_num;
        }
        
        public function getNumberOfNextSessions()
        {
                return $this->session_next;
        }
        public function isSubscriptionMembershipLimited()
        {
                return (bool) $this->subscription_membership_limitation;
        }

        function getSubscriptionMaxMembers()
        {
                return $this->subscription_max_members;
        }
        function setSubscriptionMaxMembers($a_value)
        {
                $this->subscription_max_members = $a_value;
        }
        
        public static function _isSubscriptionNotificationEnabled($a_course_id)
        {
                global $ilDB;
                
                $query = "SELECT * FROM crs_settings ".
                        "WHERE obj_id = ".$ilDB->quote($a_course_id ,'integer')." ".
                        "AND sub_notify = 1";
                $res = $ilDB->query($query);
                return $res->numRows() ? true : false;
        }
        
        public function getSubItems($a_admin_panel_enabled = false, $a_include_side_block = false)
        {
                global $ilUser;

                // Caching
                if (is_array($this->items[(int) $a_admin_panel_enabled][(int) $a_include_side_block]))
                {
                        return $this->items[(int) $a_admin_panel_enabled][(int) $a_include_side_block];
                }
                
                // Results are stored in $this->items
                parent::getSubItems($a_admin_panel_enabled,$a_include_side_block);
                        
                $limit_sess = false;            
                if(!$a_admin_panel_enabled &&
                        !$a_include_side_block &&
                        $this->items['sess'] &&
                        is_array($this->items['sess']) &&
                        $this->isSessionLimitEnabled() &&
                        $this->getViewMode() == ilContainer::VIEW_SESSIONS) // #16686
                {
                        $limit_sess = true;
                }
                
                if(!$limit_sess)
                {
                        return $this->items[(int) $a_admin_panel_enabled][(int) $a_include_side_block];
                }
                

                // do session limit
                
                // @todo move to gui class
                if(isset($_GET['crs_prev_sess']))
                {
                        $ilUser->writePref('crs_sess_show_prev_'.$this->getId(), (string) (int) $_GET['crs_prev_sess']);
                }
                if(isset($_GET['crs_next_sess']))
                {
                        $ilUser->writePref('crs_sess_show_next_'.$this->getId(), (string) (int) $_GET['crs_next_sess']);
                }
                
                $sessions = ilUtil::sortArray($this->items['sess'],'start','ASC',true,false);
                $today = new ilDate(date('Ymd',time()),IL_CAL_DATE);
                $previous = $current = $next = array();
                foreach($sessions as $key => $item)
                {
                        $start = new ilDateTime($item['start'],IL_CAL_UNIX);
                        $end = new ilDateTime($item['end'],IL_CAL_UNIX);
                        
                        if(ilDateTime::_within($today, $start, $end, IL_CAL_DAY))
                        {
                                $current[] = $item;
                        }
                        elseif(ilDateTime::_before($start, $today, IL_CAL_DAY))
                        {
                                $previous[] = $item;
                        }
                        elseif(ilDateTime::_after($start, $today, IL_CAL_DAY))
                        {
                                $next[] = $item;
                        }
                }
                $num_previous_remove = max(
                                count($previous) - $this->getNumberOfPreviousSessions(), 
                                0
                );
                while($num_previous_remove--)
                {
                        if(!$ilUser->getPref('crs_sess_show_prev_'.$this->getId()))
                        {
                                array_shift($previous);
                        }
                        $this->items['sess_link']['prev']['value'] = 1;
                }
                
                $num_next_remove = max(
                                count($next) - $this->getNumberOfNextSessions(),
                                0
                );
                while($num_next_remove--)
                {
                        if(!$ilUser->getPref('crs_sess_show_next_'.$this->getId()))
                        {
                                array_pop($next);
                        }
                        // @fixme
                        $this->items['sess_link']['next']['value'] = 1;
                }
                
                $sessions = array_merge($previous,$current,$next);
                $this->items['sess'] = $sessions;
                
                // #15389 - see ilContainer::getSubItems()
                include_once('Services/Container/classes/class.ilContainerSorting.php');
                $sort = ilContainerSorting::_getInstance($this->getId());                               
                $this->items[(int) $a_admin_panel_enabled][(int) $a_include_side_block] = $sort->sortItems($this->items);
                
                return $this->items[(int) $a_admin_panel_enabled][(int) $a_include_side_block];
        }
        
        function getSubscriptionNotify()
        {
                return true;
                return $this->subscription_notify ? true : false;
        }
        function setSubscriptionNotify($a_value)
        {
                $this->subscription_notify = $a_value ? true : false;
        }

        function setViewMode($a_mode)
        {
                $this->view_mode = $a_mode;
        }
        function getViewMode()
        {
                return $this->view_mode;
        }

        function _lookupViewMode($a_id)
        {
                global $ilDB;

                $query = "SELECT view_mode FROM crs_settings WHERE obj_id = ".$ilDB->quote($a_id ,'integer')." ";
                $res = $ilDB->query($query);
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        return $row->view_mode;
                }
                return false;
        }

        function _lookupAboStatus($a_id)
        {
                global $ilDB;

                $query = "SELECT abo FROM crs_settings WHERE obj_id = ".$ilDB->quote($a_id ,'integer')." ";
                $res = $ilDB->query($query);
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        return $row->abo;
                }
                return false;
        }

        function getArchiveStart()
        {
                return $this->archive_start ? $this->archive_start : time();
        }
        function setArchiveStart($a_value)
        {
                $this->archive_start = $a_value;
        }
        function getArchiveEnd()
        {
                return $this->archive_end ? $this->archive_end : mktime(0,0,0,12,12,date("Y",time())+2);
        }
        function setArchiveEnd($a_value)
        {
                $this->archive_end = $a_value;
        }
        function getArchiveType()
        {
                return $this->archive_type ? IL_CRS_ARCHIVE_DOWNLOAD : IL_CRS_ARCHIVE_NONE;
        }
        function setArchiveType($a_value)
        {
                $this->archive_type = $a_value;
        }
        function setAboStatus($a_status)
        {
                $this->abo = $a_status;
        }
        function getAboStatus()
        {
                return $this->abo;
        }
        function setShowMembers($a_status)
        {
                $this->show_members = $a_status;
        }
        function getShowMembers()
        {
                return $this->show_members;
        }
        
        public function setMailToMembersType($a_type)
        {
                $this->mail_members = $a_type;
        }
        
        public function getMailToMembersType()
        {
                return $this->mail_members;
        }

        function getMessage()
        {
                return $this->message;
        }
        function setMessage($a_message)
        {
                $this->message = $a_message;
        }
        function appendMessage($a_message)
        {
                if($this->getMessage())
                {
                        $this->message .= "<br /> ";
                }
                $this->message .= $a_message;
        }

        function isActivated($a_check_archive = false)
        {
                if($a_check_archive)
                {
                        if($this->isArchived())
                        {
                                return true;
                        }
                }
                if($this->getOfflineStatus())
                {
                        return false;
                }
                if($this->getActivationUnlimitedStatus())
                {
                        return true;
                }
                if(time() < $this->getActivationStart() or
                   time() > $this->getActivationEnd())
                {
                        return false;
                }
                return true;
        }

        function _isActivated($a_obj_id)
        {
                include_once("./Modules/Course/classes/class.ilObjCourseAccess.php");
                return ilObjCourseAccess::_isActivated($a_obj_id);
        }

        function _registrationEnabled($a_obj_id)
        {
                include_once("./Modules/Course/classes/class.ilObjCourseAccess.php");
                return ilObjCourseAccess::_registrationEnabled($a_obj_id);
        }

        function isArchived()
        {
                if($this->getViewMode() != IL_CRS_VIEW_ARCHIVE)
                {
                        return false;
                }
                if(time() < $this->getArchiveStart() or time() > $this->getArchiveEnd())
                {
                        return false;
                }
                return true;
        }

        function allowAbo()
        {
                return $this->ABO == $this->ABO_ENABLED;
        }

        function read($a_force_db = false)
        {
                parent::read($a_force_db);

                include_once('./Services/Container/classes/class.ilContainerSortingSettings.php');
                $this->setOrderType(ilContainerSortingSettings::_lookupSortMode($this->getId()));

                $this->__readSettings();
        }
        function create($a_upload = false)
        {
                global $ilAppEventHandler;
                
                parent::create($a_upload);

                if(!$a_upload)
                {
                        $this->createMetaData();
                }
                $this->__createDefaultSettings();
                
                $ilAppEventHandler->raise('Modules/Course',
                        'create',
                        array('object' => $this,
                                'obj_id' => $this->getId(),
                                'appointments' => $this->prepareAppointments('create')));
                
        }
        
        function setLatitude($a_latitude)
        {
                $this->latitude = $a_latitude;
        }

        function getLatitude()
        {
                return $this->latitude;
        }

        function setLongitude($a_longitude)
        {
                $this->longitude = $a_longitude;
        }

        function getLongitude()
        {
                return $this->longitude;
        }

        function setLocationZoom($a_locationzoom)
        {
                $this->locationzoom = $a_locationzoom;
        }

        function getLocationZoom()
        {
                return $this->locationzoom;
        }

        function setEnableCourseMap($a_enablemap)
        {
                $this->enablemap = $a_enablemap;
        }

        function getEnableCourseMap()
        {
                return $this->enablemap;
        }
        
        public function cloneObject($a_target_id,$a_copy_id = 0)
        {
                global $ilDB,$ilUser;
                
                $new_obj = parent::cloneObject($a_target_id,$a_copy_id);
                
                $this->cloneAutoGeneratedRoles($new_obj);
                $this->cloneMetaData($new_obj);
                
                // Assign admin
                $new_obj->getMemberObject()->add($ilUser->getId(),IL_CRS_ADMIN);
                        
                // #14596               
                $cwo = ilCopyWizardOptions::_getInstance($a_copy_id);           
                if($cwo->isRootNode($this->getRefId()))
                {
                        $this->setOfflineStatus(true);
                }                               
                
                // Copy settings
                $this->cloneSettings($new_obj);
        
                // Course Defined Fields
                include_once('Modules/Course/classes/Export/class.ilCourseDefinedFieldDefinition.php');
                ilCourseDefinedFieldDefinition::_clone($this->getId(),$new_obj->getId());
                
                // Clone course files
                include_once('Modules/Course/classes/class.ilCourseFile.php');
                ilCourseFile::_cloneFiles($this->getId(),$new_obj->getId());
                
                // Copy learning progress settings
                include_once('Services/Tracking/classes/class.ilLPObjSettings.php');
                $obj_settings = new ilLPObjSettings($this->getId());
                $obj_settings->cloneSettings($new_obj->getId());
                unset($obj_settings);
                
                // clone icons
                global $ilLog;
                $ilLog->write(__METHOD__.': '.$this->getBigIconPath().' '.$this->getSmallIconPath());
                $new_obj->saveIcons($this->getBigIconPath(),
                        $this->getSmallIconPath(),
                        $this->getTinyIconPath());
                
                // clone certificate (#11085)
                include_once "./Services/Certificate/classes/class.ilCertificate.php";
                include_once "./Modules/Course/classes/class.ilCourseCertificateAdapter.php";
                $cert = new ilCertificate(new ilCourseCertificateAdapter($this));
                $newcert = new ilCertificate(new ilCourseCertificateAdapter($new_obj));
                $cert->cloneCertificate($newcert);
                                
                return $new_obj;
        }
        
        public function cloneDependencies($a_target_id,$a_copy_id)
        {               
                parent::cloneDependencies($a_target_id,$a_copy_id);
                
                // Clone course start objects
                include_once('Services/Container/classes/class.ilContainerStartObjects.php');
                $start = new ilContainerStartObjects($this->getRefId(),$this->getId());
                $start->cloneDependencies($a_target_id,$a_copy_id);
                
                // Clone course item settings
                include_once('Services/Object/classes/class.ilObjectActivation.php');
                ilObjectActivation::cloneDependencies($this->getRefId(),$a_target_id,$a_copy_id);
                
                include_once './Modules/Course/classes/Objectives/class.ilLOSettings.php';
                ilLOSettings::cloneSettings($a_copy_id, $this->getId(), ilObject::_lookupObjId($a_target_id));

                // Clone course learning objectives
                include_once('Modules/Course/classes/class.ilCourseObjective.php');
                $crs_objective = new ilCourseObjective($this);
                $crs_objective->ilClone($a_target_id,$a_copy_id);
                
                return true;
        }
        
        public function cloneAutoGeneratedRoles($new_obj)
        {
                global $ilLog,$rbacadmin,$rbacreview;
                
                $admin = $this->getDefaultAdminRole();
                $new_admin = $new_obj->getDefaultAdminRole();
                
                if(!$admin || !$new_admin || !$this->getRefId() || !$new_obj->getRefId())
                {
                        $ilLog->write(__METHOD__.' : Error cloning auto generated role: il_crs_admin');
                }
                $rbacadmin->copyRolePermissions($admin,$this->getRefId(),$new_obj->getRefId(),$new_admin,true);
                $ilLog->write(__METHOD__.' : Finished copying of role crs_admin.');
                
                $tutor = $this->getDefaultTutorRole();
                $new_tutor = $new_obj->getDefaultTutorRole();
                if(!$tutor || !$new_tutor)
                {
                        $ilLog->write(__METHOD__.' : Error cloning auto generated role: il_crs_tutor');
                }
                $rbacadmin->copyRolePermissions($tutor,$this->getRefId(),$new_obj->getRefId(),$new_tutor,true);
                $ilLog->write(__METHOD__.' : Finished copying of role crs_tutor.');
                
                $member = $this->getDefaultMemberRole();
                $new_member = $new_obj->getDefaultMemberRole();
                if(!$member || !$new_member)
                {
                        $ilLog->write(__METHOD__.' : Error cloning auto generated role: il_crs_member');
                }
                $rbacadmin->copyRolePermissions($member,$this->getRefId(),$new_obj->getRefId(),$new_member,true);
                $ilLog->write(__METHOD__.' : Finished copying of role crs_member.');
                
                return true;
        }
        

        function validate()
        {
                $this->setMessage('');

                #if(($this->getSubscriptionLimitationType() != IL_CRS_SUBSCRIPTION_DEACTIVATED) and
                #   $this->getSubscriptionType() == )
                #{
                #       $this->appendMessage($this->lng->txt('crs_select_registration_type'));
                #}

                if(($this->getActivationType() == IL_CRS_ACTIVATION_LIMITED) and
                   $this->getActivationEnd() < $this->getActivationStart())
                {
                        $this->appendMessage($this->lng->txt("activation_times_not_valid"));
                }
                if(($this->getSubscriptionLimitationType() == IL_CRS_SUBSCRIPTION_LIMITED) and
                   $this->getSubscriptionStart() > $this->getSubscriptionEnd())
                {
                        $this->appendMessage($this->lng->txt("subscription_times_not_valid"));
                }
                #if((!$this->getActivationUnlimitedStatus() and
                #       !$this->getSubscriptionUnlimitedStatus()) and
                #       ($this->getSubscriptionStart() > $this->getActivationEnd() or
                #        $this->getSubscriptionStart() < $this->getActivationStart() or
                #        $this->getSubscriptionEnd() > $this->getActivationEnd() or
                #        $this->getSubscriptionEnd() <  $this->getActivationStart()))
                #   
                #{
                #       $this->appendMessage($this->lng->txt("subscription_time_not_within_activation"));
                #}
                if($this->getSubscriptionType() == IL_CRS_SUBSCRIPTION_PASSWORD and !$this->getSubscriptionPassword())
                {
                        $this->appendMessage($this->lng->txt("crs_password_required"));
                }
                if($this->isSubscriptionMembershipLimited() and ($this->getSubscriptionMaxMembers() <= 0 or !is_numeric($this->getSubscriptionMaxMembers())))
                {
                        $this->appendMessage($this->lng->txt("max_members_not_numeric"));
                }
                if(($this->getViewMode() == IL_CRS_VIEW_ARCHIVE) and
                   $this->getArchiveStart() > $this->getArchiveEnd())
                {
                        $this->appendMessage($this->lng->txt("archive_times_not_valid"));
                }
                if(!$this->getTitle() || !$this->getStatusDetermination())
                {
                        $this->appendMessage($this->lng->txt('err_check_input'));
                }


                return $this->getMessage() ? false : true;
        }

        function validateInfoSettings()
        {
                global $ilErr;
                $error = false;
                if($this->getContactEmail()) {
                $emails = split(",",$this->getContactEmail());
                        
                        foreach ($emails as $email) {
                                $email = trim($email);
                                if (!(ilUtil::is_email($email) or ilObjUser::getUserIdByLogin($email)))
                                {
                                        $ilErr->appendMessage($this->lng->txt('contact_email_not_valid')." '".$email."'");
                                        $error = true;
                                }
                        }                       
                }
                return !$error;
        }

        function hasContactData()
        {
                return strlen($this->getContactName()) or
                        strlen($this->getContactResponsibility()) or
                        strlen($this->getContactEmail()) or
                        strlen($this->getContactPhone()) or
                        strlen($this->getContactConsultation());
        }
                        

        function delete()
        {
                global $ilAppEventHandler;
                
                // always call parent delete function first!!
                if (!parent::delete())
                {
                        return false;
                }

                // delete meta data
                $this->deleteMetaData();

                // put here course specific stuff

                $this->__deleteSettings();

                include_once('Modules/Course/classes/class.ilCourseParticipants.php');
                ilCourseParticipants::_deleteAllEntries($this->getId());

                $this->initCourseArchiveObject();
                $this->archives_obj->deleteAll();

                include_once './Modules/Course/classes/class.ilCourseObjective.php';
                ilCourseObjective::_deleteAll($this->getId());

                include_once './Modules/Course/classes/class.ilObjCourseGrouping.php';
                ilObjCourseGrouping::_deleteAll($this->getId());

                include_once './Modules/Course/classes/class.ilCourseFile.php';
                ilCourseFile::_deleteByCourse($this->getId());
                
                include_once('Modules/Course/classes/Export/class.ilCourseDefinedFieldDefinition.php');
                ilCourseDefinedFieldDefinition::_deleteByContainer($this->getId());
                
                $ilAppEventHandler->raise('Modules/Course',
                        'delete',
                        array('object' => $this,
                                'obj_id' => $this->getId(),
                                'appointments' => $this->prepareAppointments('delete')));
                
                
                return true;
        }



        function update()
        {
                global $ilAppEventHandler,$ilLog;

                include_once('./Services/Container/classes/class.ilContainerSortingSettings.php');
                $sorting = new ilContainerSortingSettings($this->getId());
                $sorting->setSortMode($this->getOrderType());
                $sorting->update();

                $this->updateMetaData();
                $this->updateSettings();
                parent::update();
                
                $ilAppEventHandler->raise('Modules/Course',
                        'update',
                        array('object' => $this,
                                'obj_id' => $this->getId(),
                                'appointments' => $this->prepareAppointments('update')));
                
        }

        function updateSettings()
        {
                global $ilDB;

                // Due to a bug 3.5.alpha maybe no settings exist. => create default settings

                $query = "SELECT * FROM crs_settings WHERE obj_id = ".$ilDB->quote($this->getId() ,'integer')." ";
                $res = $ilDB->query($query);

                if(!$res->numRows())
                {
                        $this->__createDefaultSettings();
                }
                
                $query = "UPDATE crs_settings SET ".
                        "syllabus = ".$ilDB->quote($this->getSyllabus() ,'text').", ".
                        "contact_name = ".$ilDB->quote($this->getContactName() ,'text').", ".
                        "contact_responsibility = ".$ilDB->quote($this->getContactResponsibility() ,'text').", ".
                        "contact_phone = ".$ilDB->quote($this->getContactPhone() ,'text').", ".
                        "contact_email = ".$ilDB->quote($this->getContactEmail() ,'text').", ".
                        "contact_consultation = ".$ilDB->quote($this->getContactConsultation() ,'text').", ".
                        "activation_type = ".$ilDB->quote(!$this->getOfflineStatus() ,'integer').", ".                  
                        "sub_limitation_type = ".$ilDB->quote($this->getSubscriptionLimitationType() ,'integer').", ".
                        "sub_start = ".$ilDB->quote($this->getSubscriptionStart() ,'integer').", ".
                        "sub_end = ".$ilDB->quote($this->getSubscriptionEnd() ,'integer').", ".
                        "sub_type = ".$ilDB->quote($this->getSubscriptionType() ,'integer').", ".
                        "sub_password = ".$ilDB->quote($this->getSubscriptionPassword() ,'text').", ".
                        "sub_mem_limit = ".$ilDB->quote((int) $this->isSubscriptionMembershipLimited() ,'integer').", ".
                        "sub_max_members = ".$ilDB->quote($this->getSubscriptionMaxMembers() ,'integer').", ".
                        "sub_notify = ".$ilDB->quote($this->getSubscriptionNotify() ,'integer').", ".
                        "view_mode = ".$ilDB->quote($this->getViewMode() ,'integer').", ".
                        "archive_start = ".$ilDB->quote($this->getArchiveStart() ,'integer').", ".
                        "archive_end = ".$ilDB->quote($this->getArchiveEnd() ,'integer').", ".
                        "archive_type = ".$ilDB->quote($this->getArchiveType() ,'integer').", ".
                        "abo = ".$ilDB->quote($this->getAboStatus() ,'integer').", ".
                        "waiting_list = ".$ilDB->quote($this->enabledWaitingList() ,'integer').", ".
                        "important = ".$ilDB->quote($this->getImportantInformation() ,'text').", ".
                        "show_members = ".$ilDB->quote($this->getShowMembers() ,'integer').", ".
                        "latitude = ".$ilDB->quote($this->getLatitude() ,'text').", ".
                        "longitude = ".$ilDB->quote($this->getLongitude() ,'text').", ".
                        "location_zoom = ".$ilDB->quote($this->getLocationZoom() ,'integer').", ".
                        "enable_course_map = ".$ilDB->quote((int) $this->getEnableCourseMap() ,'integer').", ".
                        'session_limit = '.$ilDB->quote($this->isSessionLimitEnabled(),'integer').', '.
                        'session_prev = '.$ilDB->quote($this->getNumberOfPreviousSessions(),'integer').', '.
                        'session_next = '.$ilDB->quote($this->getNumberOfNextSessions(),'integer').', '.
                        'reg_ac_enabled = '.$ilDB->quote($this->isRegistrationAccessCodeEnabled(),'integer').', '.
                        'reg_ac = '.$ilDB->quote($this->getRegistrationAccessCode(),'text').', '.
                        'auto_notification = '.$ilDB->quote( (int)$this->getAutoNotification(), 'integer').', '.
                        'status_dt = '.$ilDB->quote((int) $this->getStatusDetermination()).', '.
                        'mail_members_type = '.$ilDB->quote((int) $this->getMailToMembersType(),'integer').' '.
                        "WHERE obj_id = ".$ilDB->quote($this->getId() ,'integer')."";
                
                                
                $res = $ilDB->manipulate($query);
                
                // moved activation to ilObjectActivation
                if($this->ref_id)
                {
                        include_once "./Services/Object/classes/class.ilObjectActivation.php";          
                        ilObjectActivation::getItem($this->ref_id);
                        
                        $item = new ilObjectActivation;                 
                        if($this->getActivationUnlimitedStatus())
                        {
                                $item->setTimingType(ilObjectActivation::TIMINGS_DEACTIVATED);
                        }
                        else
                        {                               
                                $item->setTimingType(ilObjectActivation::TIMINGS_ACTIVATION);
                                $item->setTimingStart($this->getActivationStart());
                                $item->setTimingEnd($this->getActivationEnd());
                                $item->toggleVisible($this->getActivationVisibility());
                        }                                               
                        
                        $item->update($this->ref_id);           
                }
        }
        
        public function cloneSettings($new_obj)
        {
                $new_obj->setSyllabus($this->getSyllabus());
                $new_obj->setContactName($this->getContactName());
                $new_obj->setContactResponsibility($this->getContactResponsibility());
                $new_obj->setContactPhone($this->getContactPhone());
                $new_obj->setContactEmail($this->getContactEmail());
                $new_obj->setContactConsultation($this->getContactConsultation());
                $new_obj->setOfflineStatus($this->getOfflineStatus()); // #9914
                $new_obj->setActivationType($this->getActivationType());
                $new_obj->setActivationStart($this->getActivationStart());
                $new_obj->setActivationEnd($this->getActivationEnd());
                $new_obj->setActivationVisibility($this->getActivationVisibility());
                $new_obj->setSubscriptionLimitationType($this->getSubscriptionLimitationType());
                $new_obj->setSubscriptionStart($this->getSubscriptionStart());
                $new_obj->setSubscriptionEnd($this->getSubscriptionEnd());
                $new_obj->setSubscriptionType($this->getSubscriptionType());
                $new_obj->setSubscriptionPassword($this->getSubscriptionPassword());
                $new_obj->enableSubscriptionMembershipLimitation($this->isSubscriptionMembershipLimited());
                $new_obj->setSubscriptionMaxMembers($this->getSubscriptionMaxMembers());
                $new_obj->setSubscriptionNotify($this->getSubscriptionNotify());
                $new_obj->setViewMode($this->getViewMode());
                $new_obj->setOrderType($this->getOrderType());
                $new_obj->setArchiveStart($this->getArchiveStart());
                $new_obj->setArchiveEnd($this->getArchiveEnd());
                $new_obj->setArchiveType($this->getArchiveType());
                $new_obj->setAboStatus($this->getAboStatus());
                $new_obj->enableWaitingList($this->enabledWaitingList());
                $new_obj->setImportantInformation($this->getImportantInformation());
                $new_obj->setShowMembers($this->getShowMembers());
                $new_obj->enableSessionLimit($this->isSessionLimitEnabled());
                $new_obj->setNumberOfPreviousSessions($this->getNumberOfPreviousSessions());
                $new_obj->setNumberOfNextSessions($this->getNumberOfNextSessions());
                $new_obj->setAutoNotification( $this->getAutoNotification() );
                $new_obj->enableRegistrationAccessCode($this->isRegistrationAccessCodeEnabled());
                include_once './Services/Membership/classes/class.ilMembershipRegistrationCodeUtils.php';
                $new_obj->setRegistrationAccessCode(ilMembershipRegistrationCodeUtils::generateCode());
                $new_obj->setStatusDetermination($this->getStatusDetermination());
                $new_obj->setMailToMembersType($this->getMailToMembersType());
                
                // #10271
                $new_obj->setEnableCourseMap($this->getEnableCourseMap());
                $new_obj->setLatitude($this->getLatitude());
                $new_obj->setLongitude($this->getLongitude());
                $new_obj->setLocationZoom($this->getLocationZoom());
                
                $new_obj->update();
        }

        function __createDefaultSettings()
        {
                global $ilDB;
                
                include_once './Services/Membership/classes/class.ilMembershipRegistrationCodeUtils.php';
                $this->setRegistrationAccessCode(ilMembershipRegistrationCodeUtils::generateCode());

                $query = "INSERT INTO crs_settings (obj_id,syllabus,contact_name,contact_responsibility,".
                        "contact_phone,contact_email,contact_consultation,activation_type,activation_start,".
                        "activation_end,sub_limitation_type,sub_start,sub_end,sub_type,sub_password,sub_mem_limit,".
                        "sub_max_members,sub_notify,view_mode,archive_start,archive_end,archive_type,abo," .
                        "latitude,longitude,location_zoom,enable_course_map,waiting_list,show_members, ".
                        "session_limit,session_prev,session_next, reg_ac_enabled, reg_ac, auto_notification, status_dt,mail_members_type) ".
                        "VALUES( ".
                        $ilDB->quote($this->getId() ,'integer').", ".
                        $ilDB->quote($this->getSyllabus() ,'text').", ".
                        $ilDB->quote($this->getContactName() ,'text').", ".
                        $ilDB->quote($this->getContactResponsibility() ,'text').", ".
                        $ilDB->quote($this->getContactPhone() ,'text').", ".
                        $ilDB->quote($this->getContactEmail() ,'text').", ".
                        $ilDB->quote($this->getContactConsultation() ,'text').", ".
                        $ilDB->quote(0 ,'integer').", ".
                        $ilDB->quote($this->getActivationStart() ,'integer').", ".
                        $ilDB->quote($this->getActivationEnd() ,'integer').", ".
                        $ilDB->quote(IL_CRS_SUBSCRIPTION_DEACTIVATED ,'integer').", ".
                        $ilDB->quote($this->getSubscriptionStart() ,'integer').", ".
                        $ilDB->quote($this->getSubscriptionEnd() ,'integer').", ".
                        $ilDB->quote(IL_CRS_SUBSCRIPTION_DIRECT ,'integer').", ".
                        $ilDB->quote($this->getSubscriptionPassword() ,'text').", ".
                        "0, ".
                        $ilDB->quote($this->getSubscriptionMaxMembers() ,'integer').", ".
                        "1, ".
                        "0, ".
                        $ilDB->quote($this->getArchiveStart() ,'integer').", ".
                        $ilDB->quote($this->getArchiveEnd() ,'integer').", ".
                        $ilDB->quote(IL_CRS_ARCHIVE_NONE ,'integer').", ".
                        $ilDB->quote($this->ABO_ENABLED ,'integer').", ".
                        $ilDB->quote($this->getLatitude() ,'text').", ".
                        $ilDB->quote($this->getLongitude() ,'text').", ".
                        $ilDB->quote($this->getLocationZoom() ,'integer').", ".
                        $ilDB->quote($this->getEnableCourseMap() ,'integer').", ".
                        #"objective_view = '0', ".
                        "1, ".
                        "1,".
                        $ilDB->quote($this->isSessionLimitEnabled(),'integer').', '.
                        $ilDB->quote($this->getNumberOfPreviousSessions(),'integer').', '.
                        $ilDB->quote($this->getNumberOfPreviousSessions(),'integer').', '.
                        $ilDB->quote($this->isRegistrationAccessCodeEnabled(),'integer').', '.
                        $ilDB->quote($this->getRegistrationAccessCode(),'text').', '.
                        $ilDB->quote((int)$this->getAutoNotification(),'integer').', '.
                        $ilDB->quote((int)$this->getStatusDetermination(),'integer').', '.
                        $ilDB->quote((int) $this->getMailToMembersType(),'integer').' '.
                        ")";
                        
                $res = $ilDB->manipulate($query);
                $this->__readSettings();

                include_once('./Services/Container/classes/class.ilContainerSortingSettings.php');
                $sorting = new ilContainerSortingSettings($this->getId());
                $sorting->setSortMode(ilContainer::SORT_MANUAL);
                $sorting->update();
        }
        

        function __readSettings()
        {
                global $ilDB;

                $query = "SELECT * FROM crs_settings WHERE obj_id = ".$ilDB->quote($this->getId() ,'integer')."";

                $res = $ilDB->query($query);
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        $this->setSyllabus($row->syllabus);
                        $this->setContactName($row->contact_name);
                        $this->setContactResponsibility($row->contact_responsibility);
                        $this->setContactPhone($row->contact_phone);
                        $this->setContactEmail($row->contact_email);
                        $this->setContactConsultation($row->contact_consultation);
                        $this->setOfflineStatus(!(bool)$row->activation_type); // see below
                        $this->setSubscriptionLimitationType($row->sub_limitation_type);
                        $this->setSubscriptionStart($row->sub_start);
                        $this->setSubscriptionEnd($row->sub_end);
                        $this->setSubscriptionType($row->sub_type);
                        $this->setSubscriptionPassword($row->sub_password);
                        $this->enableSubscriptionMembershipLimitation($row->sub_mem_limit);
                        $this->setSubscriptionMaxMembers($row->sub_max_members);
                        $this->setSubscriptionNotify($row->sub_notify);
                        $this->setViewMode($row->view_mode);
                        $this->setArchiveStart($row->archive_start);
                        $this->setArchiveEnd($row->archive_end);
                        $this->setArchiveType($row->archive_type);
                        $this->setAboStatus($row->abo);
                        $this->enableWaitingList($row->waiting_list);
                        $this->setImportantInformation($row->important);
                        $this->setShowMembers($row->show_members);
                        $this->setLatitude($row->latitude);
                        $this->setLongitude($row->longitude);
                        $this->setLocationZoom($row->location_zoom);
                        $this->setEnableCourseMap($row->enable_course_map);
                        $this->enableSessionLimit($row->session_limit);
                        $this->setNumberOfPreviousSessions($row->session_prev);
                        $this->setNumberOfNextSessions($row->session_next);
                        $this->enableRegistrationAccessCode($row->reg_ac_enabled);
                        $this->setRegistrationAccessCode($row->reg_ac);
                        $this->setAutoNotification($row->auto_notification == 1 ? true : false);
                        $this->setStatusDetermination((int) $row->status_dt);
                        $this->setMailToMembersType($row->mail_members_type);
                }
                
                // moved activation to ilObjectActivation
                if($this->ref_id)
                {
                        include_once "./Services/Object/classes/class.ilObjectActivation.php";
                        $activation = ilObjectActivation::getItem($this->ref_id);                       
                        switch($activation["timing_type"])
                        {                               
                                case ilObjectActivation::TIMINGS_ACTIVATION:
                                        $this->setActivationType(IL_CRS_ACTIVATION_LIMITED);                                    
                                        $this->setActivationStart($activation["timing_start"]);
                                        $this->setActivationEnd($activation["timing_end"]);
                                        $this->setActivationVisibility($activation["visible"]);
                                        break;
                                
                                default:
                                        $this->setActivationType(IL_CRS_ACTIVATION_UNLIMITED);
                                        break;                                                  
                        }
                }
                else
                {
                        // #13176 - there should always be default
                        $this->setActivationType(IL_CRS_ACTIVATION_UNLIMITED);
                }
                
                return true;
        }

        function initWaitingList()
        {
                include_once "./Modules/Course/classes/class.ilCourseWaitingList.php";

                if(!is_object($this->waiting_list_obj))
                {
                        $this->waiting_list_obj = new ilCourseWaitingList($this->getId());
                }
                return true;
        }
                

        protected function initCourseMemberObject()
        {
                global $ilUser;

                include_once "./Modules/Course/classes/class.ilCourseParticipant.php";
                $this->member_obj = ilCourseParticipant::_getInstanceByObjId($this->getId(),$ilUser->getId());
                return true;
        }

        protected function initCourseMembersObject()
        {
                global $ilUser;

                include_once "./Modules/Course/classes/class.ilCourseParticipants.php";
                $this->members_obj = ilCourseParticipants::_getInstanceByObjId($this->getId());
                return true;
        }

        public function getMemberObject()
        {
                if(!$this->member_obj instanceof ilCourseParticipant)
                {
                        $this->initCourseMemberObject();
                }
                return $this->member_obj;
        }

        public function getMembersObject()
        {
                if(!$this->members_obj instanceof ilCourseParticipants)
                {
                        $this->initCourseMembersObject();
                }
                return $this->members_obj;
        }

        function initCourseArchiveObject()
        {
                include_once "./Modules/Course/classes/class.ilCourseArchives.php";

                if(!is_object($this->archives_obj))
                {
                        $this->archives_obj =& new ilCourseArchives($this);
                }
                return true;
        }
                


        // RBAC METHODS
        function initDefaultRoles()
        {
                global $rbacadmin,$rbacreview,$ilDB;

                include_once './Services/AccessControl/classes/class.ilObjRole.php';
                $role = ilObjRole::createDefaultRole(
                                'il_crs_admin_'.$this->getRefId(),
                                "Admin of crs obj_no.".$this->getId(),
                                'il_crs_admin',
                                $this->getRefId()
                );
                $role = ilObjRole::createDefaultRole(
                                'il_crs_tutor_'.$this->getRefId(),
                                "Tutor of crs obj_no.".$this->getId(),
                                'il_crs_tutor',
                                $this->getRefId()
                );
                $role = ilObjRole::createDefaultRole(
                                'il_crs_member_'.$this->getRefId(),
                                "Member of crs obj_no.".$this->getId(),
                                'il_crs_member',
                                $this->getRefId()
                );
                
                return array();
        }
        
        public function setParentRolePermissions($a_parent_ref)
        {
                global $rbacadmin, $rbacreview;
                
                $parent_roles = $rbacreview->getParentRoleIds($a_parent_ref);
                foreach((array) $parent_roles as $parent_role)
                {
                        $rbacadmin->initIntersectionPermissions(
                                $this->getRefId(),
                                $parent_role['obj_id'],
                                $parent_role['parent'],
                                $this->__getCrsNonMemberTemplateId(),
                                ROLE_FOLDER_ID
                        );
                }
        }

        function __getCrsNonMemberTemplateId()
        {
                global $ilDB;
                
                $q = "SELECT obj_id FROM object_data WHERE type='rolt' AND title='il_crs_non_member'";
                $res = $this->ilias->db->query($q);
                $row = $res->fetchRow(DB_FETCHMODE_ASSOC);

                return $row["obj_id"];
        }

        public static function lookupCourseNonMemberTemplatesId()
        {
                global $ilDB;
                
                $query = 'SELECT obj_id FROM object_data WHERE type = '.$ilDB->quote('rolt','text').' AND title = '.$ilDB->quote('il_crs_non_member','text');
                $res = $ilDB->query($query);
                $row = $res->fetchRow(DB_FETCHMODE_ASSOC);
                
                return isset($row['obj_id']) ? $row['obj_id'] : 0;
        }
        
        public function getLocalCourseRoles($a_translate = false)
        {
                global $rbacadmin,$rbacreview;

                if (empty($this->local_roles))
                {
                        $this->local_roles = array();
                        $role_arr  = $rbacreview->getRolesOfRoleFolder($this->getRefId());

                        foreach ($role_arr as $role_id)
                        {
                                if ($rbacreview->isAssignable($role_id,$this->getRefId()) == true)
                                {
                                        $role_Obj = $this->ilias->obj_factory->getInstanceByObjId($role_id);

                                        if ($a_translate)
                                        {
                                                $role_name = ilObjRole::_getTranslation($role_Obj->getTitle());
                                        }
                                        else
                                        {
                                                $role_name = $role_Obj->getTitle();
                                        }
                                        $this->local_roles[$role_name] = $role_Obj->getId();
                                }
                        }
                }

                return $this->local_roles;
        }
        


        public function getDefaultCourseRoles($a_crs_id = "")
        {
                global $rbacadmin, $rbacreview;

                if (strlen($a_crs_id) > 0)
                {
                        $crs_id = $a_crs_id;
                }
                else
                {
                        $crs_id = $this->getRefId();
                }

                $role_arr  = $rbacreview->getRolesOfRoleFolder($crs_id);

                foreach ($role_arr as $role_id)
                {
                        $role_Obj =& $this->ilias->obj_factory->getInstanceByObjId($role_id);

                        $crs_Member ="il_crs_member_".$crs_id;
                        $crs_Admin  ="il_crs_admin_".$crs_id;
                        $crs_Tutor  ="il_crs_tutor_".$crs_id;

                        if (strcmp($role_Obj->getTitle(), $crs_Member) == 0 )
                        {
                                $arr_crsDefaultRoles["crs_member_role"] = $role_Obj->getId();
                        }

                        if (strcmp($role_Obj->getTitle(), $crs_Admin) == 0)
                        {
                                $arr_crsDefaultRoles["crs_admin_role"] = $role_Obj->getId();
                        }

                        if (strcmp($role_Obj->getTitle(), $crs_Tutor) == 0)
                        {
                                $arr_crsDefaultRoles["crs_tutor_role"] = $role_Obj->getId();
                        }
                }

                return $arr_crsDefaultRoles;
        }
        
        function __getLocalRoles()
        {
                global $rbacreview;

                // GET role_objects of predefined roles
                
                return $rbacreview->getRolesOfRoleFolder($this->getRefId(),false);
        }

        function __deleteSettings()
        {
                global $ilDB;
                
                $query = "DELETE FROM crs_settings ".
                        "WHERE obj_id = ".$ilDB->quote($this->getId() ,'integer')." ";
                $res = $ilDB->manipulate($query);

                return true;
        }
        
        
        function getDefaultMemberRole()
        {
                $local_roles = $this->__getLocalRoles();

                foreach($local_roles as $role_id)
                {
                        $title = ilObject::_lookupTitle($role_id);
                        if(substr($title,0,8) == 'il_crs_m')
                        {
                                return $role_id;
                        }
                }
                return 0;
        }
        function getDefaultTutorRole()
        {
                $local_roles = $this->__getLocalRoles();

                foreach($local_roles as $role_id)
                {
                        if($tmp_role =& ilObjectFactory::getInstanceByObjId($role_id,false))
                        {
                                if(!strcmp($tmp_role->getTitle(),"il_crs_tutor_".$this->getRefId()))
                                {
                                        return $role_id;
                                }
                        }
                }
                return false;
        }
        function getDefaultAdminRole()
        {
                $local_roles = $this->__getLocalRoles();

                foreach($local_roles as $role_id)
                {
                        if($tmp_role =& ilObjectFactory::getInstanceByObjId($role_id,false))
                        {
                                if(!strcmp($tmp_role->getTitle(),"il_crs_admin_".$this->getRefId()))
                                {
                                        return $role_id;
                                }
                        }
                }
                return false;
        }

        function _deleteUser($a_usr_id)
        {
                // Delete all user related data
                // delete lm_history
                include_once './Modules/Course/classes/class.ilCourseLMHistory.php';
                ilCourseLMHistory::_deleteUser($a_usr_id);

                include_once './Modules/Course/classes/class.ilCourseParticipants.php';
                ilCourseParticipants::_deleteUser($a_usr_id);

                // Course objectives
                include_once "Modules/Course/classes/Objectives/class.ilLOUserResults.php";
                ilLOUserResults::deleteResultsForUser($a_usr_id);               
        }
        
        public function MDUpdateListener($a_element)
        {
                global $ilLog;
                
                parent::MDUpdateListener($a_element);
                
                switch($a_element)
                {
                        case 'General':                         
                                // Update ecs content
                                include_once 'Modules/Course/classes/class.ilECSCourseSettings.php';
                                $ecs = new ilECSCourseSettings($this);
                                $ecs->handleContentUpdate();
                                break;
                                
                        default:
                                return true;
                }
        }
        
        function addAdditionalSubItemInformation(&$a_item_data)
        {
                include_once './Services/Object/classes/class.ilObjectActivation.php';
                ilObjectActivation::addAdditionalSubItemInformation($a_item_data);
        }
        
        protected function prepareAppointments($a_mode = 'create')
        {
                include_once('./Services/Calendar/classes/class.ilCalendarAppointmentTemplate.php');
                include_once('./Services/Calendar/classes/class.ilDateTime.php');
                
                switch($a_mode)
                {
                        case 'create':
                        case 'update':
                                if(!$this->getActivationUnlimitedStatus() and !$this->getOfflineStatus())
                                {
                                        $app = new ilCalendarAppointmentTemplate(self::CAL_ACTIVATION_START);
                                        $app->setTitle($this->getTitle());
                                        $app->setSubtitle('crs_cal_activation_start');
                                        $app->setTranslationType(IL_CAL_TRANSLATION_SYSTEM);
                                        $app->setDescription($this->getLongDescription());      
                                        $app->setStart(new ilDateTime($this->getActivationStart(),IL_CAL_UNIX));
                                        $apps[] = $app;

                                        $app = new ilCalendarAppointmentTemplate(self::CAL_ACTIVATION_END);
                                        $app->setTitle($this->getTitle());
                                        $app->setSubtitle('crs_cal_activation_end');
                                        $app->setTranslationType(IL_CAL_TRANSLATION_SYSTEM);
                                        $app->setDescription($this->getLongDescription());      
                                        $app->setStart(new ilDateTime($this->getActivationEnd(),IL_CAL_UNIX));
                                        $apps[] = $app;
                                }
                                if($this->getSubscriptionLimitationType() == IL_CRS_SUBSCRIPTION_LIMITED)
                                {
                                        $app = new ilCalendarAppointmentTemplate(self::CAL_REG_START);
                                        $app->setTitle($this->getTitle());
                                        $app->setSubtitle('crs_cal_reg_start');
                                        $app->setTranslationType(IL_CAL_TRANSLATION_SYSTEM);
                                        $app->setDescription($this->getLongDescription());      
                                        $app->setStart(new ilDateTime($this->getSubscriptionStart(),IL_CAL_UNIX));
                                        $apps[] = $app;

                                        $app = new ilCalendarAppointmentTemplate(self::CAL_REG_END);
                                        $app->setTitle($this->getTitle());
                                        $app->setSubtitle('crs_cal_reg_end');
                                        $app->setTranslationType(IL_CAL_TRANSLATION_SYSTEM);
                                        $app->setDescription($this->getLongDescription());      
                                        $app->setStart(new ilDateTime($this->getSubscriptionEnd(),IL_CAL_UNIX));
                                        $apps[] = $app;
                                }
                                
                                return $apps ? $apps : array();
                                
                        case 'delete':
                                // Nothing to do: The category and all assigned appointments will be deleted.
                                return array();
                }
        }
        
        ###### Interface ilMembershipRegistrationCodes

        public static function lookupObjectsByCode($a_code)
        {
                global $ilDB;
                
                $query = "SELECT obj_id FROM crs_settings ".
                        "WHERE reg_ac_enabled = ".$ilDB->quote(1,'integer')." ".
                        "AND reg_ac = ".$ilDB->quote($a_code,'text');
                $res = $ilDB->query($query);
                
                $obj_ids = array();
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        $obj_ids[] = $row->obj_id;
                }
                return $obj_ids;
        }
        
        public function register($a_user_id,$a_role = ilCourseConstants::CRS_MEMBER, $a_force_registration = false)
        {
                global $ilCtrl, $tree;
                include_once './Services/Membership/exceptions/class.ilMembershipRegistrationException.php';
                include_once "./Modules/Course/classes/class.ilCourseParticipants.php";
                $part = ilCourseParticipants::_getInstanceByObjId($this->getId());

                if($part->isAssigned($a_user_id))
                {
                        return true;
                }
                
                if(!$a_force_registration)
                {
                        // Availability
                        if($this->getSubscriptionLimitationType() == IL_CRS_SUBSCRIPTION_DEACTIVATED)
                        {
                                include_once './Modules/Group/classes/class.ilObjGroupAccess.php';

                                if(!ilObjCourseAccess::_usingRegistrationCode())
                                {
                                        throw new ilMembershipRegistrationException('Cant registrate to course '.$this->getId().
                                                ', course subscription is deactivated.', '456');
                                }
                        }

                        // Time Limitation
                        if($this->getSubscriptionLimitationType() == IL_CRS_SUBSCRIPTION_LIMITED)
                        {
                                if( !$this->inSubscriptionTime() )
                                {
                                        throw new ilMembershipRegistrationException('Cant registrate to course '.$this->getId().
                                                ', course is out of registration time.', '789');
                                }
                        }

                        // Max members
                        if($this->isSubscriptionMembershipLimited())
                        {
                                $free = max(0,$this->getSubscriptionMaxMembers() - $part->getCountMembers());
                                include_once('./Modules/Course/classes/class.ilCourseWaitingList.php');
                                $waiting_list = new ilCourseWaitingList($this->getId());
                                if($this->enabledWaitingList() and (!$free or $waiting_list->getCountUsers()))
                                {
                                        $waiting_list->addToList($a_user_id);
                                        $this->lng->loadLanguageModule("crs");
                                        $info = sprintf($this->lng->txt('crs_added_to_list'),
                                                $waiting_list->getPosition($a_user_id));
                                        include_once('./Modules/Course/classes/class.ilCourseParticipants.php');
                                        $participants = ilCourseParticipants::_getInstanceByObjId($this->getId());
                                        $participants->sendNotification($participants->NOTIFY_WAITING_LIST,$a_user_id);

                                        throw new ilMembershipRegistrationException($info, '124');
                                }

                                if(!$this->enabledWaitingList() && !$free)
                                {
                                        throw new ilMembershipRegistrationException('Cant registrate to course '.$this->getId().
                                                ', membership is limited.', '123');
                                }
                        }
                }
                
                $part->add($a_user_id,$a_role);
                $part->sendNotification($part->NOTIFY_ACCEPT_USER, $a_user_id);
                $part->sendNotification($part->NOTIFY_ADMINS,$a_user_id);
                
                
                include_once './Modules/Forum/classes/class.ilForumNotification.php';
                ilForumNotification::checkForumsExistsInsert($this->getRefId(), $a_user_id);
                
                return true;
        }

        public function getAutoNotification()
        {
                return $this->auto_notification;
        }


        public function setAutoNotification($value)
        {
                $this->auto_notification = $value;
        }
        
        public function setStatusDetermination($a_value)
        {
                $a_value = (int)$a_value;
                
                // #13905
                if($a_value == self::STATUS_DETERMINATION_LP)                           
                {
                        include_once("Services/Tracking/classes/class.ilObjUserTracking.php");
                        if(!ilObjUserTracking::_enabledLearningProgress())
                        {                       
                                $a_value = self::STATUS_DETERMINATION_MANUAL;
                        }
                }
                
                $this->status_dt = $a_value;
        }
        
        public function getStatusDetermination()
        {
                return $this->status_dt;
        }       
                
        public function syncMembersStatusWithLP()
        {
                include_once "Services/Tracking/classes/class.ilLPStatusWrapper.php";
                foreach($this->getMembersObject()->getParticipants() as $user_id)
                {
                    // #15529 - force raise on sync
                    ilLPStatusWrapper::_updateStatus($this->getId(), $user_id, null, false, false, true);                               
                }                               
        }
                        
        public function checkLPStatusSync($a_member_id)
        {
                // #11113
                include_once("Services/Tracking/classes/class.ilObjUserTracking.php");
                if(ilObjUserTracking::_enabledLearningProgress() &&
                        $this->getStatusDetermination() == ilObjCourse::STATUS_DETERMINATION_LP)
                {                       
                        include_once("Services/Tracking/classes/class.ilLPStatus.php"); 
                        // #13811 - we need to suppress creation if status entry
                        $has_completed = (ilLPStatus::_lookupStatus($this->getId(), $a_member_id, false) == ilLPStatus::LP_STATUS_COMPLETED_NUM);
                        $this->getMembersObject()->updatePassed($a_member_id, $has_completed, false, true);                                     
                }               
        }               
        
        function getOrderType()
        {
                if($this->enabledObjectiveView())
                {
                        return ilContainer::SORT_MANUAL;
                }
                return parent::getOrderType();
        }
        
} //END class.ilObjCourse
?>