<?php
/**
 * ---------------------------------------------------------------------
 * GLPI - Gestionnaire Libre de Parc Informatique
 * Copyright (C) 2015-2018 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");
}

class TicketTask extends CommonITILTask {

   static $rightname = 'task';


   static function getTypeName($nb = 0) {
      return _n('Ticket task', 'Ticket tasks', $nb);
   }


   static function canCreate() {
      return (Session::haveRight(self::$rightname, parent::ADDALLITEM)
              || Session::haveRight('ticket', Ticket::OWN));
   }


   static function canView() {
      return (Session::haveRightsOr(self::$rightname, [parent::SEEPUBLIC, parent::SEEPRIVATE])
              || Session::haveRight('ticket', Ticket::OWN));
   }


   static function canUpdate() {
      return (Session::haveRight(self::$rightname, parent::UPDATEALL)
              || Session::haveRight('ticket', Ticket::OWN));
   }


   function canViewPrivates() {
      return Session::haveRight(self::$rightname, parent::SEEPRIVATE);
   }


   function canEditAll() {
      return Session::haveRight(self::$rightname, parent::UPDATEALL);
   }


   /**
    * Does current user have right to show the current task?
    *
    * @return boolean
   **/
   function canViewItem() {

      if (!parent::canReadITILItem()) {
         return false;
      }

      if (Session::haveRight(self::$rightname, parent::SEEPRIVATE)) {
         return true;
      }

      if (!$this->fields['is_private']
          && Session::haveRight(self::$rightname, parent::SEEPUBLIC)) {
         return true;
      }

      // see task created or affected to me
      if (($this->fields["users_id"] === Session::getLoginUserID())
          || ($this->fields["users_id_tech"] === Session::getLoginUserID())) {
         return true;
      }

      if ($this->fields["groups_id_tech"] && ($this->fields["groups_id_tech"] > 0)
          && isset($_SESSION["glpigroups"])
          && in_array($this->fields["groups_id_tech"], $_SESSION["glpigroups"])) {
         return true;
      }

      return false;
   }


   /**
    * Does current user have right to create the current task?
    *
    * @return boolean
   **/
   function canCreateItem() {

      if (!parent::canReadITILItem()) {
         return false;
      }

      $ticket = new Ticket();
      if ($ticket->getFromDB($this->fields['tickets_id'])
          // No validation for closed tickets
          && !in_array($ticket->fields['status'], $ticket->getClosedStatusArray())) {
         return (Session::haveRight(self::$rightname, parent::ADDALLITEM)
                 || $ticket->isUser(CommonITILActor::ASSIGN, Session::getLoginUserID())
                 || (isset($_SESSION["glpigroups"])
                     && $ticket->haveAGroup(CommonITILActor::ASSIGN,
                                            $_SESSION['glpigroups'])));
      }
      return false;
   }


   /**
    * Does current user have right to update the current task?
    *
    * @return boolean
   **/
   function canUpdateItem() {

      if (!parent::canReadITILItem()) {
         return false;
      }

      $ticket = new Ticket();
      if ($ticket->getFromDB($this->fields['tickets_id'])
         && in_array($ticket->fields['status'], $ticket->getClosedStatusArray())) {
         return false;
      }

      if (($this->fields["users_id"] != Session::getLoginUserID())
          && !Session::haveRight(self::$rightname, parent::UPDATEALL)) {
         return false;
      }

      return true;
   }


   /**
    * Does current user have right to purge the current task?
    *
    * @return boolean
   **/
   function canPurgeItem() {
      $ticket = new Ticket();
      if ($ticket->getFromDB($this->fields['tickets_id'])
         && in_array($ticket->fields['status'], $ticket->getClosedStatusArray())) {
         return false;
      }

      return Session::haveRight(self::$rightname, PURGE);
   }


   /**
    * Populate the planning with planned ticket tasks
    *
    * @param $options   array of possible options:
    *    - who ID of the user (0 = undefined)
    *    - who_group ID of the group of users (0 = undefined)
    *    - begin Date
    *    - end Date
    *
    * @return array of planning item
   **/
   static function populatePlanning($options = []) {
      return parent::genericPopulatePlanning(__CLASS__, $options);
   }


   /**
    * Display a Planning Item
    *
    * @param array $val Array of the item to display
    *
    * @return string Already planned information
   **/
   static function getAlreadyPlannedInformation($val) {
      return parent::genericGetAlreadyPlannedInformation(__CLASS__, $val);
   }


   /**
    * Display a Planning Item
    *
    * @param array           $val       array of the item to display
    * @param integer         $who       ID of the user (0 if all)
    * @param string          $type      position of the item in the time block (in, through, begin or end)
    * @param integer|boolean $complete  complete display (more details)
    *
    * @return string
    */
   static function displayPlanningItem(array $val, $who, $type = "", $complete = 0) {
      return parent::genericDisplayPlanningItem(__CLASS__, $val, $who, $type, $complete);
   }


   /**
    * @since 0.85
    *
    * @see commonDBTM::getRights()
    **/
   function getRights($interface = 'central') {

      $values = parent::getRights();
      unset($values[UPDATE], $values[CREATE], $values[READ]);

      if ($interface == 'central') {
         $values[parent::UPDATEALL]      = __('Update all');
         $values[parent::ADDALLITEM  ]   = __('Add to all items');
         $values[parent::SEEPRIVATE]     = __('See private ones');
      }

      $values[parent::SEEPUBLIC]   = __('See public ones');

      if ($interface == 'helpdesk') {
         unset($values[PURGE]);
      }

      return $values;
   }


   /**
    * @since 0.90
    *
    * @see CommonDBTM::showFormButtons()
   **/
   function showFormButtons($options = []) {
      global $CFG_GLPI;

      // for single object like config
      $ID = 1;
      if (isset($this->fields['id'])) {
         $ID = $this->fields['id'];
      }

      $params['colspan']      = 2;
      $params['candel']       = true;
      $params['canedit']      = true;

      if (is_array($options) && count($options)) {
         foreach ($options as $key => $val) {
            $params[$key] = $val;
         }
      }

      if (!$this->isNewID($ID)) {
         echo "<input type='hidden' name='id' value='$ID'>";
      }

      Plugin::doHook("post_item_form", ['item' => $this, 'options' => &$params]);

      echo "<tr class='tab_bg_2'>";
      echo "<td class='center' colspan='".($params['colspan']*2)."'>";

      if ($this->isNewID($ID)) {
         echo Ticket::getSplittedSubmitButtonHtml($this->fields['tickets_id'], 'add');
      } else {
         if ($params['candel']
               // no trashbin in tickettask
          //   && !$this->can($ID, DELETE)
             && !$this->can($ID, PURGE)) {
            $params['candel'] = false;
         }

         if ($params['canedit'] && $this->can($ID, UPDATE)) {
            echo Ticket::getSplittedSubmitButtonHtml($this->fields['tickets_id'], 'update');
            echo "</td></tr><tr class='tab_bg_2'>\n";
         }

         if ($params['candel']) {
            echo "<td class='right' colspan='".($params['colspan']*2)."' >\n";
            if ($this->can($ID, PURGE)) {
               echo Html::submit(_x('button', 'Delete permanently'),
                                 ['name'    => 'purge',
                                       'confirm' => __('Confirm the final deletion?')]);
            }
         }

         if ($this->isField('date_mod')) {
            echo "<input type='hidden' name='_read_date_mod' value='".$this->getField('date_mod')."'>";
         }
      }

      echo "</td></tr></table></div>";
      Html::closeForm();
   }

   /**
    * Build parent condition for search
    *
    * @return string
    */
   public static function buildParentCondition() {
      return "(0 = 1 " . Ticket::buildCanViewCondition("tickets_id") . ") ";
   }
}
