<?php
/**
 * ---------------------------------------------------------------------
 * GLPI - Gestionnaire Libre de Parc Informatique
 * Copyright (C) 2015-2021 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/>.
 * ---------------------------------------------------------------------
 */

$AJAX_INCLUDE = 1;

include ("../inc/includes.php");

header("Content-Type: application/json; charset=UTF-8");
Html::header_nocache();

Session::checkLoginUser();

if (isset($_GET['node'])) {
   $nodes = [];

   // Get ancestors of current entity
   $ancestors = getAncestorsOf('glpi_entities', $_SESSION['glpiactive_entity']);

   // Root node
   if ($_GET['node'] == -1) {
      foreach ($_SESSION['glpiactiveprofile']['entities'] as $entity) {
         $ID                           = $entity['id'];
         $is_recursive                 = $entity['is_recursive'];

         $path = [
            // append r for root nodes, id are uniques in jstree.
            // so, in case of presence of this id in subtree of other nodes,
            // it will be removed from root nodes
            'id'   => $ID.'r',
            'text' => Dropdown::getDropdownName("glpi_entities", $ID)
         ];

         if ($is_recursive) {
            $result2 = $DB->request([
               'FROM'   => 'glpi_entities',
               'COUNT'  => 'cpt',
               'WHERE'  => ['entities_id' => $ID]
            ]);
            $result2 = $result2->next();
            if ($result2['cpt'] > 0) {
               $path['children'] = true;
               //apend a i tag (one of shortest tags) to have the is_recursive link
               $path['text'].= '<i/>';
               if (isset($ancestors[$ID])) {
                  $path['state']['opened'] = 'true';
               }
            }
         }
         $nodes[] = $path;
      }
   } else { // standard node
      $node_id = preg_replace('/r$/', '', $_GET['node']);
      $iterator = $DB->request([
         'SELECT' => [
            'ent.id',
            'ent.name',
            'ent.sons_cache',
            'COUNT'  => 'sub_entities.id AS nb_subs'
         ],
         'FROM'   => 'glpi_entities AS ent',
         'LEFT JOIN' => [
            'glpi_entities AS sub_entities'  => [
               'ON'  => [
                  'sub_entities' => 'entities_id',
                  'ent'          => 'id'
               ]
            ]
         ],
         'WHERE'     => ['ent.entities_id' => $node_id],
         'GROUPBY'   => ['ent.id', 'ent.name', 'ent.sons_cache'],
         'ORDERBY'   => 'name'
      ]);

      while ($row = $iterator->next()) {
         $path = [
            'id'   => $row['id'],
            'text' => $row['name']
         ];

         if ($row['nb_subs'] > 0) {
            //apend a i tag (one of shortest tags) to have the is_recursive link
            $path['text'].= '<i/>';
            $path['children'] = true;

            if (isset($ancestors[$row['id']])) {
               $path['state']['opened'] = 'true';
            }
         }
         $nodes[] = $path;
      }
   }
   echo json_encode($nodes);
}