class.ilECSCmsTreeSynchronizer.php

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<?php

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

include_once './Services/WebServices/ECS/classes/Tree/class.ilECSCmsTree.php';
include_once './Services/WebServices/ECS/classes/Mapping/class.ilECSNodeMappingAssignments.php';
include_once './Services/WebServices/ECS/classes/Mapping/class.ilECSNodeMappingAssignment.php';

class ilECSCmsTreeSynchronizer 
{
        private $server = null;
        private $mid = null;
        private $tree_id = null;
        private $tree = null;
        
        private $default_settings = array();
        private $global_settings = null;
        
        
        public function __construct(ilECSSetting $server, $mid, $tree_id)
        {
                $this->server = $server;
                $this->mid = $mid;
                $this->tree = new ilECSCmsTree($tree_id);
                $this->tree_id = $tree_id;
                
                include_once './Services/WebServices/ECS/classes/Mapping/class.ilECSNodeMappingSettings.php';
                $this->global_settings = ilECSNodeMappingSettings::getInstanceByServerMid($this->getServer()->getServerId(),$this->mid);
        }
        
        public function getServer()
        {
                return $this->server;
        }
        
        public function getTree()
        {
                return $this->tree;
        }
        
        public function getDefaultSettings()
        {
                return (array) $this->default_settings;
        }
        
        public function getGlobalSettings()
        {
                return $this->global_settings;
        }
        
        public function sync()
        {
                include_once './Services/WebServices/ECS/classes/Mapping/class.ilECSNodeMappingAssignments.php';
                $this->default_settings = ilECSNodeMappingAssignments::lookupSettings(
                        $this->getServer()->getServerId(),
                        $this->mid,
                        $this->tree_id,
                        0
                );
                
                // return if setting is false => no configuration done
                if(!$this->getDefaultSettings())
                {
                        $GLOBALS['ilLog']->write(__METHOD__.': No directory allocation settings. Aborting');
                        return true;
                }
                        
                // lookup obj id of root node
                include_once './Services/WebServices/ECS/classes/Tree/class.ilECSCmsData.php';
                
                $root_obj_id = ilECSCmsTree::lookupRootId($this->tree_id);
                $this->syncNode($root_obj_id,0);
                
                // Tree structure is up to date, now check node movements
                $this->checkTreeUpdates($root_obj_id);
                return true;
        }
        
        protected function checkTreeUpdates($a_root_obj_id)
        {
                if($this->default_settings['tree_update'] == false)
                {
                        $GLOBALS['ilLog']->write(__METHOD__.': Tree update disabled for tree with id '. $this->getTree()->getTreeId());
                        return false;
                }
                
                // Start recursion
                include_once './Services/WebServices/ECS/classes/Mapping/class.ilECSNodeMappingAssignment.php';
                $mapping = new ilECSNodeMappingAssignment(
                                $this->getServer()->getServerId(),
                                $this->mid,
                                $this->tree_id,
                                $a_root_obj_id
                );
                $a_root_ref_id = $mapping->getRefId();
                if($a_root_ref_id)
                {
                        $this->handleTreeUpdate($a_root_ref_id, $a_root_obj_id);
                }
        }
        
        protected function handleTreeUpdate($a_parent_ref_id, $a_tnode_id)
        {
                global $tree;
                
                // Check if node is already imported at location "parent_ref_id"
                // If not => move it
                $cms_data = new ilECSCmsData($a_tnode_id);
                
                include_once './Services/WebServices/ECS/classes/class.ilECSImport.php';
                $import_obj_id = ilECSImport::lookupObjIdByContentId(
                                $this->getServer()->getServerId(),
                                $this->mid,
                                $cms_data->getCmsId());
                if(!$import_obj_id)
                {
                        $GLOBALS['ilLog']->write(__METHOD__.': cms tree node not imported. tnode_id: '. $a_tnode_id);
                        return false;
                }
                
                $GLOBALS['ilLog']->write(__METHOD__.' parent ref:'.$a_parent_ref_id.' tnode:'. $a_tnode_id);
                $ref_ids = ilObject::_getAllReferences($import_obj_id);
                $import_ref_id = end($ref_ids);
                $import_ref_id_parent = $tree->getParentId($import_ref_id);
                
                if($a_parent_ref_id != $import_ref_id_parent)
                {
                        // move node
                        $GLOBALS['ilLog']->write(__METHOD__.': Moving node '.$a_parent_ref_id.' to '.$import_ref_id);
                        $tree->moveTree($import_ref_id,$a_parent_ref_id);
                }
                
                // iterate through childs
                $childs = $this->getTree()->getChilds($a_tnode_id);
                foreach((array) $childs as $node)
                {
                        $this->handleTreeUpdate($import_ref_id, $node['child']);
                }
                return true;
        }
        
        protected function syncNode($tree_obj_id,$parent_id,$a_mapped = false)
        {
                $childs = $this->getTree()->getChilds($tree_obj_id);
                
                $assignment = new ilECSNodeMappingAssignment(
                                $this->getServer()->getServerId(),
                                $this->mid,
                                $this->tree_id,
                                $tree_obj_id);
                
                if($assignment->getRefId())
                {
                        $parent_id = $assignment->getRefId();
                }
                
                // information for deeper levels
                if($assignment->isMapped())
                {
                        $a_mapped = true;
                }
                
                if($a_mapped)
                {
                        $parent_id = $this->syncCategory($assignment,$parent_id);
                }
                
                // this is not necessary
                #if($parent_id)
                {
                        // iterate through childs
                        foreach($childs as $node)
                        {
                                $this->syncNode($node['child'],$parent_id,$a_mapped);
                        }
                }
                return true;
        }
        
        protected function syncCategory(ilECSNodeMappingAssignment $ass,$parent_id)
        {
                include_once './Services/WebServices/ECS/classes/Tree/class.ilECSCmsData.php';
                $data = new ilECSCmsData($ass->getCSId());

                // Check if node is imported => create
                // perform title update
                // perform position update
                include_once './Services/WebServices/ECS/classes/class.ilECSImport.php';
                $obj_id = ilECSImport::lookupObjIdByContentId(
                                $this->getServer()->getServerId(),
                                $this->mid,
                                $data->getCmsId());
                if($obj_id)
                {
                        $refs = ilObject::_getAllReferences($obj_id);
                        $ref_id = end($refs);
                        
                        
                        $cat = ilObjectFactory::getInstanceByRefId($ref_id,false);
                        if(($cat instanceof ilObject) and $this->default_settings['title_update'])
                        {
                                $GLOBALS['ilLog']->write(__METHOD__.': Updating cms category ');
                                $GLOBALS['ilLog']->write(__METHOD__.': Title is '. $data->getTitle());
                                $cat->deleteTranslation($GLOBALS['lng']->getDefaultLanguage());
                                $cat->addTranslation(
                                                $data->getTitle(),
                                                $cat->getLongDescription(),
                                                $GLOBALS['lng']->getDefaultLanguage(),
                                                1
                                        );
                                $cat->setTitle($data->getTitle());
                                $cat->update();
                        }
                        else
                        {
                                $GLOBALS['ilLog']->write(__METHOD__.': Updating cms category -> nothing to do');
                        }
                        return $ref_id;
                }
                elseif($this->getGlobalSettings()->isEmptyContainerCreationEnabled())
                {
                        $GLOBALS['ilLog']->write(__METHOD__.': Creating new cms category');
                        
                        // Create category
                        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_id);
                        $cat->setPermissions($parent_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->mid);
                        $import->setContentId($data->getCmsId());
                        $import->setImported(true);
                        $import->save();
                        
                        return $cat->getRefId();
                }
                else
                {
                        $GLOBALS['ilLog']->write(__METHOD__.': Creation of empty containers is disabled.');
                        return 0;
                }
        }
}
?>