class.ilECSCommunityReader.php

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<?php
/*
    +-----------------------------------------------------------------------------+
    | ILIAS open source                                                           |
    +-----------------------------------------------------------------------------+
    | Copyright (c) 1998-2006 ILIAS open source, University of Cologne            |
    |                                                                             |
    | This program is free software; you can redistribute it and/or               |
    | modify it under the terms of the GNU General Public License                 |
    | as published by the Free Software Foundation; either version 2              |
    | of the License, or (at your option) any later version.                      |
    |                                                                             |
    | This program is distributed in the hope that it will be useful,             |
    | but WITHOUT ANY WARRANTY; without even the implied warranty of              |
    | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               |
    | GNU General Public License for more details.                                |
    |                                                                             |
    | You should have received a copy of the GNU General Public License           |
    | along with this program; if not, write to the Free Software                 |
    | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. |
    +-----------------------------------------------------------------------------+
*/


class ilECSCommunityReader
{
    private static $instances = null;

    protected $position = 0;

    protected $log;
    protected $settings = null;
    protected $connector = null;
    
    protected $communities = array();
    protected $participants = array();
    protected $own_ids = array();

    private function __construct(ilECSSetting $setting = null)
    {
        global $ilLog;
        
        include_once('Services/WebServices/ECS/classes/class.ilECSSetting.php');
        include_once('Services/WebServices/ECS/classes/class.ilECSConnector.php');
        include_once('Services/WebServices/ECS/classes/class.ilECSConnectorException.php');
        include_once('Services/WebServices/ECS/classes/class.ilECSCommunity.php');

        if ($setting) {
            $this->settings = $setting;
        } else {
            $GLOBALS['ilLog']->write(__METHOD__ . ': Using deprecated call');
            $GLOBALS['ilLog']->logStack();
        }
        $this->connector = new ilECSConnector($this->settings);
        $this->log = $ilLog;
        
        $this->read();
    }
    
    public static function _getInstance()
    {
        $GLOBALS['ilLog']->write(__METHOD__ . ': Using deprecated call');
        return self::getInstanceByServerId(15);
    }

    public static function getInstanceByServerId($a_server_id)
    {
        if (isset(self::$instances[$a_server_id])) {
            return self::$instances[$a_server_id];
        }
        return self::$instances[$a_server_id] = new ilECSCommunityReader(ilECSSetting::getInstanceByServerId($a_server_id));
    }

    public function getServer()
    {
        return $this->settings;
    }
    
    public function getParticipants()
    {
        return $this->participants;
    }


    public function getOwnMIDs()
    {
        return $this->own_ids ? $this->own_ids : array();
    }
    
    public function getCommunities()
    {
        return $this->communities ? $this->communities : array();
    }
    
    public function getCommunityById($a_id)
    {
        foreach ($this->communities as $community) {
            if ($community->getId() == $a_id) {
                return $community;
            }
        }
        return null;
    }
    
    public function getParticipantsByPid($a_pid)
    {
        $participants = [];
        foreach ($this->getCommunities() as $community) {
            foreach ($community->getParticipants() as $participant) {
                if ($participant->getPid() == $a_pid) {
                    $participants[] = $participant;
                }
            }
        }
        return $participants;
    }
    
    public function getParticipantByMID($a_mid)
    {
        return isset($this->participants[$a_mid]) ? $this->participants[$a_mid] : false;
    }

    public function getCommunityByMID($a_mid)
    {
        foreach ($this->communities as $community) {
            foreach ($community->getParticipants() as $part) {
                if ($part->getMID() == $a_mid) {
                    return $community;
                }
            }
        }
        return null;
    }
    
    public function getPublishableParticipants()
    {
        foreach ($this->getCommunities() as $community) {
            foreach ($community->getParticipants() as $participant) {
                if ($participant->isPublishable()) {
                    $p_part[] = $participant;
                }
            }
        }
        return $p_part ? $p_part : array();
    }
    
    public function getEnabledParticipants()
    {
        include_once './Services/WebServices/ECS/classes/class.ilECSParticipantSettings.php';
        $ps = ilECSParticipantSettings::getInstanceByServerId($this->getServer()->getServerId());
        $en = $ps->getEnabledParticipants();
        foreach ($this->getCommunities() as $community) {
            foreach ($community->getParticipants() as $participant) {
                if (in_array($participant->getMid(), $en)) {
                    $e_part[] = $participant;
                }
            }
        }
        return $e_part ? $e_part : array();
    }

    private function read()
    {
        global $ilLog;
        
        try {
            $res = $this->connector->getMemberships();
            if (!is_array($res->getResult())) {
                return false;
            }
            foreach ($res->getResult() as $community) {
                $tmp_comm = new ilECSCommunity($community);
                foreach ($tmp_comm->getParticipants() as $participant) {
                    $this->participants[$participant->getMID()] = $participant;
                    if ($participant->isSelf()) {
                        $this->own_ids[] = $participant->getMID();
                    }
                }
                $this->communities[] = $tmp_comm;
            }
        } catch (ilECSConnectorException $e) {
            $ilLog->write(__METHOD__ . ': Error connecting to ECS server. ' . $e->getMessage());
            throw $e;
        }
    }
}