<?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/>.
 * ---------------------------------------------------------------------
 */

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


/**
 * ITILTemplateHiddenField Class
 *
 * Predefined fields for ITIL template class
 *
 * @since 9.5.0
**/
abstract class ITILTemplateHiddenField extends ITILTemplateField {

   static function getTypeName($nb = 0) {
      return _n('Hidden field', 'Hidden fields', $nb);
   }


   function getTabNameForItem(CommonGLPI $item, $withtemplate = 0) {

      // can exists for template
      if ($item instanceof ITILTemplate
          && Session::haveRight("itiltemplate", READ)) {
         $nb = 0;
         if ($_SESSION['glpishow_count_on_tabs']) {
            $nb = countElementsInTable($this->getTable(),
                                       [static::$items_id => $item->getID()]);
         }
         return self::createTabEntry(self::getTypeName(Session::getPluralNumber()), $nb);
      }
      return '';
   }


   function post_purgeItem() {
      global $DB;

      parent::post_purgeItem();

      $itil_class = static::$itiltype;
      $itil_object = new $itil_class;
      $itemtype_id = $itil_object->getSearchOptionIDByField('field', 'itemtype', $itil_object->getTable());
      $items_id_id = $itil_object->getSearchOptionIDByField('field', 'items_id', $itil_object->getTable());

      // Try to delete itemtype -> delete items_id
      if ($this->fields['num'] == $itemtype_id) {
         $iterator = $DB->request([
            'SELECT' => 'id',
            'FROM'   => $this->getTable(),
            'WHERE'  => [
               static::$items_id => $this->fields[static::$itiltype],
               'num'             => $items_id_id
            ]
         ]);
         if (count($iterator)) {
            $result = $iterator->next();
            $a = new static();
            $a->delete(['id' => $result['id']]);
         }
      }
   }


   /**
    * Get hidden fields for a template
    *
    * @since 0.83
    *
    * @param $ID                    integer  the template ID
    * @param $withtypeandcategory   boolean  with type and category (false by default)
    *
    * @return array of hidden fields
   **/
   function getHiddenFields($ID, $withtypeandcategory = false) {
      global $DB;

      $iterator = $DB->request([
         'FROM'   => $this->getTable(),
         'WHERE'  => [static::$items_id => $ID],
         'ORDER'  => 'id'
      ]);

      $tt_class       = static::$itemtype;
      $tt             = new $tt_class;
      $allowed_fields = $tt->getAllowedFields($withtypeandcategory);
      $fields         = [];

      while ($rule = $iterator->next()) {
         if (isset($allowed_fields[$rule['num']])) {
            $fields[$allowed_fields[$rule['num']]] = $rule['num'];
         }
      }
      return $fields;
   }


   /**
    * Return fields who doesn't need to be used for this part of template
    *
    * @since 9.2
    *
    * @return array the excluded fields (keys and values are equals)
    */
   static function getExcludedFields() {
      return [
         175 => 175, // ticket's tasks (template)
      ];
   }


   /**
    * Print the hidden fields
    *
    * @since 0.83
    *
    * @param ITILTemplate $tt            ITIL Template
    * @param boolean      $withtemplate  Template or basic item (default 0)
    *
    * @return void
   **/
   static function showForITILTemplate(ITILTemplate $tt, $withtemplate = 0) {
      global $DB;

      $ID = $tt->fields['id'];

      if (!$tt->getFromDB($ID) || !$tt->can($ID, READ)) {
         return false;
      }
      $canedit = $tt->canEdit($ID);
      $ttm     = new static;
      $fields  = $tt->getAllowedFieldsNames(false);
      $fields  = array_diff_key($fields, self::getExcludedFields());
      $rand    = mt_rand();

      $iterator = $DB->request([
         'FROM'   => static::getTable(),
         'WHERE'  => [static::$items_id => $ID]
      ]);

      $numrows = count($iterator);

      $hiddenfields = [];
      $used         = [];
      while ($data = $iterator->next()) {
         $hiddenfields[$data['id']] = $data;
         $used[$data['num']]        = $data['num'];
      }

      if ($canedit) {
         echo "<div class='firstbloc'>";
         echo "<form name='changeproblem_form$rand' id='changeproblem_form$rand' method='post'
                  action='".$ttm->getFormURL()."'>";

         echo "<table class='tab_cadre_fixe'>";
         echo "<tr class='tab_bg_2'><th colspan='2'>".__('Add a hidden field')."</th></tr>";
         echo "<tr class='tab_bg_2'><td class='right'>";
         echo "<input type='hidden' name='" . static::$items_id . "' value='$ID'>";
         Dropdown::showFromArray('num', $fields, ['used'=> $used]);
         echo "</td><td class='center'>";
         echo "&nbsp;<input type='submit' name='add' value=\""._sx('button', 'Add').
                        "\" class='submit'>";
         echo "</td></tr>";
         echo "</table>";
         Html::closeForm();
         echo "</div>";
      }

      echo "<div class='spaced'>";
      if ($canedit && $numrows) {
         Html::openMassiveActionsForm('mass'.$ttm->getType().$rand);
         $massiveactionparams = ['num_displayed' => min($_SESSION['glpilist_limit'], $numrows),
                                      'container'     => 'mass'.$ttm->getType().$rand];
         Html::showMassiveActions($massiveactionparams);
      }
      echo "<table class='tab_cadre_fixehov'>";
      echo "<tr class='noHover'><th colspan='2'>";
      echo static::getTypeName(count($iterator));
      echo "</th></tr>";
      if ($numrows) {
         $header_begin  = "<tr>";
         $header_top    = '';
         $header_bottom = '';
         $header_end    = '';
         if ($canedit) {
            $header_top    .= "<th width='10'>";
            $header_top    .= Html::getCheckAllAsCheckbox('mass'.$ttm->getType().$rand)."</th>";
            $header_bottom .= "<th width='10'>";
            $header_bottom .= Html::getCheckAllAsCheckbox('mass'.$ttm->getType().$rand)."</th>";
         }
         $header_end .= "<th>".__('Name')."</th>";
         $header_end .= "</tr>";
         echo $header_begin.$header_top.$header_end;

         foreach ($hiddenfields as $data) {
            echo "<tr class='tab_bg_2'>";
            if ($canedit) {
               echo "<td>".Html::getMassiveActionCheckBox($ttm->getType(), $data["id"])."</td>";
            }
            echo "<td>".$fields[$data['num']]."</td>";
            echo "</tr>";
         }
         echo $header_begin.$header_bottom.$header_end;
      } else {
         echo "<tr><th colspan='2'>".__('No item found')."</th></tr>";
      }

      echo "</table>";
      if ($canedit && $numrows) {
         $massiveactionparams['ontop'] = false;
         Html::showMassiveActions($massiveactionparams);
         Html::closeForm();
      }
      echo "</div>";
   }

}
