<?php
/**
 * ---------------------------------------------------------------------
 * GLPI - Gestionnaire Libre de Parc Informatique
 * Copyright (C) 2015-2020 Teclib' and contributors.
 *
 * http://glpi-project.org
 *
 * based on GLPI - Gestionnaire Libre de Parc Informatique
 * Copyright (C) 2003-2014 by the INDEPNET Development Team.
 *
 * ---------------------------------------------------------------------
 *
 * LICENSE
 *
 * This file is part of GLPI.
 *
 * GLPI 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.
 *
 * GLPI 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 GLPI. If not, see <http://www.gnu.org/licenses/>.
 * ---------------------------------------------------------------------
 */

namespace Glpi\CalDAV;

if (!defined('GLPI_ROOT')) {
   die("Sorry. You can't access this file directly");
}

use Glpi\CalDAV\Backend\Auth;
use Glpi\CalDAV\Backend\Calendar;
use Glpi\CalDAV\Backend\Principal;
use Glpi\CalDAV\Node\CalendarRoot;
use Glpi\CalDAV\Plugin\Acl;
use Glpi\CalDAV\Plugin\Browser;
use Glpi\CalDAV\Plugin\CalDAV;
use Sabre\DAV;
use Sabre\DAVACL;

class Server extends DAV\Server {

   public function __construct() {
      $this->on('exception', [$this, 'logException']);

      // Backends
      $authBackend = new Auth();
      $principalBackend = new Principal();
      $calendarBackend = new Calendar();

      // Directory tree
      $tree = [
         new DAV\SimpleCollection(
            Principal::PRINCIPALS_ROOT,
            [
               new DAVACL\PrincipalCollection($principalBackend, Principal::PREFIX_GROUPS),
               new DAVACL\PrincipalCollection($principalBackend, Principal::PREFIX_USERS),
            ]
         ),
         new DAV\SimpleCollection(
            Calendar::CALENDAR_ROOT,
            [
               new CalendarRoot($principalBackend, $calendarBackend, Principal::PREFIX_GROUPS),
               new CalendarRoot($principalBackend, $calendarBackend, Principal::PREFIX_USERS),
            ]
         ),
      ];

      parent::__construct($tree);

      $this->addPlugin(new DAV\Auth\Plugin($authBackend));
      $this->addPlugin(new Acl());
      $this->addPlugin(new CalDAV());

      // Support for html frontend (only in debug mode)
      $this->addPlugin(new Browser(false));
   }

   /**
    *
    * @param \Throwable $exception
    */
   public function logException(\Throwable $exception) {
      if ($exception instanceof \Sabre\DAV\Exception && $exception->getHTTPCode() < 500) {
         // Ignore server exceptions that does not corresponds to a server error
         return;
      }
      \Toolbox::logError(
         get_class($exception) . ': ' . $exception->getMessage() . "\n" . $exception->getTraceAsString()
      );
   }
}