class.ilECSCourseCreationHandler.php

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<?php

include_once './Services/WebServices/ECS/classes/Mapping/class.ilECSNodeMappingSettings.php';
include_once './Services/WebServices/ECS/classes/Tree/class.ilECSCmsData.php';
include_once './Services/WebServices/ECS/classes/class.ilECSParticipantSettings.php';

/* Copyright (c) 1998-2009 ILIAS open source, Extended GPL, see docs/LICENSE */

class ilECSCourseCreationHandler
{
        private $server = null;
        private $mapping = null;
        private $course_url = null;
        private $object_created = false;
        
        private $mid;
        

        public function __construct(ilECSSetting $server,$a_mid)
        {
                $this->server = $server;
                $this->mid = $a_mid;
                $this->mapping = ilECSNodeMappingSettings::getInstanceByServerMid($this->getServer()->getServerId(), $this->getMid());
                
                include_once './Services/WebServices/ECS/classes/Course/class.ilECSCourseUrl.php';
                $this->course_url = new ilECSCourseUrl();
        }
        
        
        public function getServer()
        {
                return $this->server;
        }
        
        public function getMapping()
        {
                return $this->mapping;
        }
        
        public function getCourseUrl()
        {
                return $this->course_url;
        }
        
        public function isObjectCreated()
        {
                return $this->object_created;
        }
        
        public function setObjectCreated($a_status)
        {
                $this->object_created = $a_status;
        }
        
        public function getMid()
        {
                return $this->mid;
        }
        
        public function handle($a_content_id,$course)
        {
                $GLOBALS['ilLog']->write(__METHOD__.': --------- content id '.$a_content_id);
                
                // prepare course url
                // if any object (course group) will be created, a list of all course urls
                // will be sent to ecs.
                $this->setObjectCreated(false);
                $this->getCourseUrl()->setECSId($a_content_id);
                
                
                if($this->getMapping()->isAttributeMappingEnabled())
                {
                        $GLOBALS['ilLog']->write(__METHOD__.': Handling advanced attribute mapping');
                        return $this->doAttributeMapping($a_content_id,$course);
                }
                
                if($this->getMapping()->isAllInOneCategoryEnabled())
                {
                        $GLOBALS['ilLog']->write(__METHOD__.': Handling course all in one category setting');
                        return $this->doSync($a_content_id, $course,ilObject::_lookupObjId($this->getMapping()->getAllInOneCategory()));
                }

                $parent_obj_id = $this->syncParentContainer($a_content_id,$course);
                if($parent_obj_id)
                {
                        $GLOBALS['ilLog']->write(__METHOD__.': Using already mapped category: '. ilObject::_lookupTitle($parent_obj_id));
                        return $this->doSync($a_content_id,$course,$parent_obj_id);
                }
                $GLOBALS['ilLog']->write(__METHOD__.': Using course default category');
                return $this->doSync($a_content_id,$course,ilObject::_lookupObjId($this->getMapping()->getDefaultCourseCategory()));
        }
        
        protected function doAttributeMapping($a_content_id, $course)
        {
                // Check if course is already created
                $course_id = $course->lectureID;
                $obj_id = $this->getImportId($course_id);
                
                if($obj_id)
                {
                        // do update
                        $GLOBALS['ilLog']->write(__METHOD__.' Performing update of already imported course.');
                        
                        $refs = ilObject::_getAllReferences($obj_id);
                        $ref = end($refs);
                        
                        return $this->doSync(
                                $a_content_id, 
                                $course,
                                ilObject::_lookupObjId($GLOBALS['tree']->getParentId($ref))
                        );
                }
                
                // Get all rules
                $matching_rule = 0;
                include_once './Services/WebServices/ECS/classes/Course/class.ilECSCourseMappingRule.php';
                foreach(ilECSCourseMappingRule::getRuleRefIds($this->getServer()->getServerId(), $this->getMid()) as $ref_id)
                {
                        if(ilECSCourseMappingRule::isMatching(
                                        $course,
                                        $this->getServer()->getServerId(),
                                        $this->getMid(),
                                        $ref_id))
                        {
                                $matching_rule = $ref_id;
                        }
                }
                if(!$matching_rule)
                {
                        // Put course in default category
                        $GLOBALS['ilLog']->write(__METHOD__.': No matching attribute mapping rule found.');
                        $GLOBALS['ilLog']->write(__METHOD__.': Using course default category');
                        return $this->doSync($a_content_id,$course,ilObject::_lookupObjId($this->getMapping()->getDefaultCourseCategory()));
                }
                // map according mapping rules
                $parent_ref = ilECSCourseMappingRule::doMappings($course,$this->getServer()->getServerId(),$this->getMid(),$ref_id);
                $this->doSync($a_content_id, $course, ilObject::_lookupObjId($parent_ref));
                return true;
        }
        
        protected function syncParentContainer($a_content_id, $course)
        {
                if(!is_array($course->allocations))
                {
                        $GLOBALS['ilLog']->write(__METHOD__.': No allocation in course defined.');
                        return 0;
                }
                if(!$course->allocations[0]->parentID)
                {
                        $GLOBALS['ilLog']->write(__METHOD__.': No allocation parent in course defined.');
                        return 0;
                }
                $parent_id = $course->allocations[0]->parentID;
                
                include_once './Services/WebServices/ECS/classes/Tree/class.ilECSCmsData.php';
                $parent_tid = ilECSCmsData::lookupFirstTreeOfNode($this->getServer()->getServerId(), $this->getMid(), $parent_id);
                return $this->syncNodetoTop($parent_tid, $parent_id);
        }
        
        protected function syncNodeToTop($tree_id, $cms_id)
        {
                $obj_id = $this->getImportId($cms_id);
                if($obj_id)
                {
                        // node already imported
                        return $obj_id;
                }

                $tobj_id = ilECSCmsData::lookupObjId(
                                $this->getServer()->getServerId(), 
                                $this->getMid(), 
                                $tree_id, 
                                $cms_id);
                
                // node is not imported
                $GLOBALS['ilLog']->write(__METHOD__.': ecs node with id '. $cms_id. ' is not imported!');
                
                // check for mapping: if mapping is available create category
                include_once './Services/WebServices/ECS/classes/Mapping/class.ilECSNodeMappingAssignment.php';
                $ass = new ilECSNodeMappingAssignment(
                                $this->getServer()->getServerId(),
                                $this->getMid(),
                                $tree_id,
                                $tobj_id);
                
                if($ass->isMapped())
                {
                        $GLOBALS['ilLog']->write(__METHOD__.': node is mapped');
                        return $this->syncCategory($tobj_id,$ass->getRefId());
                }
                
                // Start recursion to top
                include_once './Services/WebServices/ECS/classes/Tree/class.ilECSCmsTree.php';
                $tree = new ilECSCmsTree($tree_id);
                $parent_tobj_id = $tree->getParentId($tobj_id);
                if($parent_tobj_id)
                {
                        $cms_ids = ilECSCmsData::lookupCmsIds(array($parent_tobj_id));
                        $obj_id = $this->syncNodeToTop($tree_id, $cms_ids[0]);
                }
                
                if($obj_id)
                {
                        $refs = ilObject::_getAllReferences($obj_id);
                        $ref_id = end($refs);
                        return $this->syncCategory($tobj_id, $ref_id);
                }
                return 0;
        }
        
        protected function syncCategory($tobj_id, $parent_ref_id)
        {
                include_once './Services/WebServices/ECS/classes/Tree/class.ilECSCmsData.php';
                $data = new ilECSCmsData($tobj_id);
                
                include_once './Modules/Category/classes/class.ilObjCategory.php';
                $cat = new ilObjCategory();
                $cat->setTitle($data->getTitle());
                $cat->create(); // true for upload
                $cat->createReference();
                $cat->putInTree($parent_ref_id);
                $cat->setPermissions($parent_ref_id);
                $cat->deleteTranslation($GLOBALS['lng']->getDefaultLanguage());
                $cat->addTranslation(
                                $data->getTitle(),
                                $cat->getLongDescription(),
                                $GLOBALS['lng']->getDefaultLanguage(),
                                1
                );
                        
                // set imported
                $import = new ilECSImport(
                        $this->getServer()->getServerId(),
                        $cat->getId()
                );
                $import->setMID($this->getMid());
                $import->setEContentId($data->getCmsId());
                $import->setImported(true);
                $import->save();
                
                return $cat->getId();
        }

        protected function doSync($a_content_id, $course, $a_parent_obj_id)
        {
                // Check if course is already created
                $course_id = $course->lectureID;
                $this->getCourseUrl()->setCmsLectureId($course_id);
                
                $obj_id = $this->getImportId($course_id);
                
                $GLOBALS['ilLog']->write(__METHOD__.': Handling course '. print_r($course,true));
                
                // Handle parallel groups
                if($obj_id)
                {
                        // update multiple courses/groups according to parallel scenario
                        $GLOBALS['ilLog']->write(__METHOD__.': '.$course->groupScenario);
                        include_once './Services/WebServices/ECS/classes/Mapping/class.ilECSMappingUtils.php';
                        switch((int) $course->groupScenario)
                        {
                                case ilECSMappingUtils::PARALLEL_GROUPS_IN_COURSE:
                                        $GLOBALS['ilLog']->write(__METHOD__.': Performing update for parallel groups in course.');
                                        $this->updateParallelGroups($course,$obj_id);
                                        break;
                                
                                case ilECSMappingUtils::PARALLEL_ALL_COURSES:
                                        $GLOBALS['ilLog']->write(__METHOD__.': Performing update for parallel courses.');
                                        $this->updateParallelCourses($a_content_id,$course, $a_parent_obj_id);
                                        break;
                                
                                case ilECSMappingUtils::PARALLEL_ONE_COURSE:
                                default:
                                        // nothing to do
                                        break;
                                
                        }
                        
                        // do update
                        $this->updateCourseData($course,$obj_id);
                }
                else
                {
                        include_once './Services/WebServices/ECS/classes/Mapping/class.ilECSMappingUtils.php';
                        switch((int) $course->groupScenario)
                        {
                                case ilECSMappingUtils::PARALLEL_GROUPS_IN_COURSE:
                                        $GLOBALS['ilLog']->write(__METHOD__.': Parallel scenario "groups in courses".');
                                        $crs = $this->createCourseData($course);
                                        $crs = $this->createCourseReference($crs, $a_parent_obj_id);
                                        $this->setImported($course_id, $crs, $a_content_id);

                                        // Create parallel groups under crs
                                        $this->createParallelGroups($a_content_id,$course,$crs->getRefId());
                                        break;
                                
                                        
                                
                                case ilECSMappingUtils::PARALLEL_COURSES_FOR_LECTURERS:
                                        // Import empty to store the ecs ressource id (used for course member update).
                                        $this->setImported($course_id,NULL,$a_content_id);
                                        $GLOBALS['ilLog']->write(__METHOD__.': Parallel scenario "Courses foreach Lecturer".');
                                        break;

                                case ilECSMappingUtils::PARALLEL_ALL_COURSES:
                                        $GLOBALS['ilLog']->write(__METHOD__.': Parallel scenario "Many courses".');
                                        
                                        $refs = ilObject::_getAllReferences($a_parent_obj_id);
                                        $ref = end($refs);
                                        $crs = $this->createCourseData($course);
                                        $this->createCourseReference($crs, $a_parent_obj_id);
                                        $this->setImported($course_id, $crs, $a_content_id);
                                        $this->createParallelCourses($a_content_id,$course, $ref);
                                        break;
                                        
                                default:
                                case ilECSMappingUtils::PARALLEL_ONE_COURSE:
                                        $GLOBALS['ilLog']->write(__METHOD__.': Parallel scenario "One Course".');
                                        $crs = $this->createCourseData($course);
                                        $this->createCourseReference($crs, $a_parent_obj_id);
                                        $this->setImported($course_id, $crs, $a_content_id);
                                        break;
                                
                                        
                        }
                }
                // finally update course urls
                $this->handleCourseUrlUpdate();
                return true;
        }
        
        protected function createParallelCourses($a_content_id,$course, $parent_ref)
        {
                foreach((array) $course->groups as $group)
                {
                        $this->createParallelCourse($a_content_id,$course, $group, $parent_ref);
                }
                return true;
        }
        
        protected function createParallelCourse($a_content_id, $course, $group, $parent_ref)
        {
                include_once './Modules/Course/classes/class.ilObjCourse.php';
                $course_obj = new ilObjCourse();
                $title = strlen($group->title) ? $group->title : $course->title;
                $GLOBALS['ilLog']->write(__METHOD__.': Creating new parallel course instance from ecs : '. $title);
                $course_obj->setTitle($title);
                $course_obj->setSubscriptionMaxMembers((int) $group->maxParticipants);
                $course_obj->create();
                
                $this->createCourseReference($course_obj, ilObject::_lookupObjId($parent_ref));
                $this->setImported($course->lectureID, $course_obj,$a_content_id, $group->id);
                $this->setObjectCreated(true);
                return true;
        }
        
        protected function updateParallelCourses($a_content_id, $course,$parent_obj)
        {
                $parent_refs = ilObject::_getAllReferences($parent_obj);
                $parent_ref = end($parent_refs);
                
                foreach((array) $course->groups as $group)
                {
                        $title = strlen($group->title) ? $group->title : $course->title;
                        $obj_id = $this->getImportId($course->lectureID, $group->id);
                        $GLOBALS['ilLog']->write(__METHOD__.': Imported obj id is ' .$obj_id);
                        if(!$obj_id)
                        {
                                $this->createParallelCourse($a_content_id, $course, $group, $parent_ref);
                        }
                        else
                        {
                                $course_obj = ilObjectFactory::getInstanceByObjId($obj_id,false);
                                if($course_obj instanceof ilObjCourse)
                                {
                                        $GLOBALS['ilLog']->write(__METHOD__.': New title is '. $title);
                                        $course_obj->setTitle($title);
                                        $course_obj->setSubscriptionMaxMembers($group->maxParticipants);
                                        $course_obj->update();
                                }
                        }
                        $this->addUrlEntry($this->getImportId($course->lectureID, $group->ID));
                }
                return true;
        }
        
        
        
        protected function createParallelGroups($a_content_id, $course, $parent_ref)
        {
                foreach((array) $course->groups as $group)
                {
                        $this->createParallelGroup($a_content_id,$course, $group, $parent_ref);
                }
                return true;
        }

        protected function createParallelGroup($a_content_id,$course, $group, $parent_ref)
        {
                include_once './Modules/Group/classes/class.ilObjGroup.php';
                $group_obj = new ilObjGroup();
                $title = strlen($group->title) ? $group->title : $course->title;
                $group_obj->setTitle($title);
                $group_obj->setMaxMembers((int) $group->maxParticipants);
                $group_obj->create();
                $group_obj->createReference();
                $group_obj->putInTree($parent_ref);
                $group_obj->setPermissions($parent_ref);
                $group_obj->initGroupStatus(GRP_TYPE_CLOSED);
                $this->setImported($course->lectureID, $group_obj, $a_content_id, $group->id);
                $this->setObjectCreated(true);
        }


        protected function updateParallelGroups($a_content_id, $course,$parent_obj)
        {
                $parent_refs = ilObject::_getAllReferences($parent_obj);
                $parent_ref = end($parent_refs);
                
                foreach((array) $course->groups as $group)
                {
                        $obj_id = $this->getImportId($course->lectureID, $group->id);
                        $GLOBALS['ilLog']->write(__METHOD__.': Imported obj id is ' .$obj_id);
                        if(!$obj_id)
                        {
                                $this->createParallelGroup($a_content_id,$course, $group, $parent_ref);
                        }
                        else
                        {
                                $group_obj = ilObjectFactory::getInstanceByObjId($obj_id,false);
                                if($group_obj instanceof ilObjGroup)
                                {
                                        $title = strlen($group->title) ? $group->title : $course->title;
                                        $GLOBALS['ilLog']->write(__METHOD__.': New title is '. $title);
                                        $group_obj->setTitle($title);
                                        $group_obj->setMaxMembers((int) $group->maxParticipants);
                                        $group_obj->update();
                                }
                        }
                        $this->addUrlEntry($this->getImportId($course->lectureID, $group->id));
                }
        }
        
        protected function getImportId($a_content_id,$a_sub_id = NULL)
        {
                include_once './Services/WebServices/ECS/classes/class.ilECSImport.php';
                return ilECSImport::lookupObjIdByContentId(
                                $this->getServer()->getServerId(),
                                $this->getMid(),
                                $a_content_id,
                                $a_sub_id
                );
        }
        
        protected function updateCourseData($course,$obj_id)
        {
                // do update
                $refs = ilObject::_getAllReferences($obj_id);
                $ref_id = end($refs);
                $crs_obj = ilObjectFactory::getInstanceByRefId($ref_id,false);
                if(!$crs_obj instanceof ilObject)
                {
                        $GLOBALS['ilLog']->write(__METHOD__.': Cannot instantiate course instance');
                        return true;
                }
                        
                // Update title
                $title = $course->title;
                $GLOBALS['ilLog']->write(__METHOD__.': new title is : '. $title);
                        
                $crs_obj->setTitle($title);
                $crs_obj->update();
                return true;
        }
        
        protected function createCourseData($course)
        {
                include_once './Modules/Course/classes/class.ilObjCourse.php';
                $course_obj = new ilObjCourse();
                $title = $course->title;
                $GLOBALS['ilLog']->write(__METHOD__.': Creating new course instance from ecs : '. $title);
                $course_obj->setTitle($title);
                $course_obj->create();
                return $course_obj;
        }
        
        protected function createCourseReference($crs,$a_parent_obj_id)
        {
                $ref_ids = ilObject::_getAllReferences($a_parent_obj_id);
                $ref_id = end($ref_ids);
                
                $crs->createReference();
                $crs->putInTree($ref_id);
                $crs->setPermissions($ref_id);
                
                $this->setObjectCreated(true);
                $this->addUrlEntry($crs->getId());
                return $crs;
        }
        
        protected function setImported($a_content_id, $object, $a_ecs_id = 0, $a_sub_id = 0)
        {
                include_once './Services/WebServices/ECS/classes/class.ilECSImport.php';
                $import = new ilECSImport(
                                $this->getServer()->getServerId(),
                                is_object($object) ? $object->getId() : 0
                );
                
                $GLOBALS['ilLog']->write(__METHOD__.': Imported with ecs id '.$a_ecs_id);
                
                $import->setSubId($a_sub_id);
                $import->setMID($this->getMid());
                $import->setEContentId($a_ecs_id);
                $import->setContentId($a_content_id);
                $import->setImported(true);
                $import->save();
                return true;
        }
        
        protected function addUrlEntry($a_obj_id)
        {
                $refs = ilObject::_getAllReferences($a_obj_id);
                $ref_id = end($refs);
                
                if(!$ref_id)
                {
                        return false;
                }
                include_once './Services/WebServices/ECS/classes/Course/class.ilECSCourseLmsUrl.php';
                $lms_url = new ilECSCourseLmsUrl();
                $lms_url->setTitle(ilObject::_lookupTitle($a_obj_id));
                
                include_once './Services/Link/classes/class.ilLink.php';
                $lms_url->setUrl(ilLink::_getLink($ref_id));
                $this->getCourseUrl()->addLmsCourseUrls($lms_url);
        }
        
        protected function handleCourseUrlUpdate()
        {
                $GLOBALS['ilLog']->write(__METHOD__.': Starting course url update');
                if($this->isObjectCreated())
                {
                        $GLOBALS['ilLog']->write(__METHOD__.': Sending new course group url');
                        $this->getCourseUrl()->send($this->getServer(), $this->getMid());
                }
                else
                {
                        $GLOBALS['ilLog']->write(__METHOD__.': No courses groups created. Aborting');
                }
        }
}
?>