<?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");
}


/**
 * CommonITILActor Class
**/
abstract class CommonITILActor extends CommonDBRelation {

   // items_id_1, items_id_2, itemtype_1 and itemtype_2 are defined inside the inherited classes
   static public $checkItem_2_Rights  = self::DONT_CHECK_ITEM_RIGHTS;
   static public $logs_for_item_2     = false;
   public $auto_message_on_action     = false;

   // Requester
   const REQUESTER = 1;
   // Assign
   const ASSIGN    = 2;
   // Observer
   const OBSERVER  = 3;


   function getActorForeignKey() {
      return static::$items_id_2;
   }


   static function getItilObjectForeignKey() {
      return static::$items_id_1;
   }


   /**
    * @since 0.84
    *
    * @param $input  array of data to be added
    *
    * @see CommonDBRelation::isAttach2Valid()
   **/
   function isAttach2Valid(Array &$input) {

      // Anonymous user is valid if 'alternative_email' field is not empty
      if (isset($input['users_id']) && ($input['users_id'] == 0)
          && isset($input['alternative_email']) && !empty($input['alternative_email'])) {
         return true;
      }
      // Anonymous supplier is valid if 'alternative_email' field is not empty
      if (isset($input['suppliers_id']) && ($input['suppliers_id'] == 0)
          && isset($input['alternative_email']) && !empty($input['alternative_email'])) {
         return true;
      }
      return false;
   }


   /**
    * @param $items_id
   **/
   function getActors($items_id) {
      global $DB;

      $users = [];
      $iterator = $DB->request([
         'FROM'   => $this->getTable(),
         'WHERE'  => [static::getItilObjectForeignKey() => $items_id],
         'ORDER'  => 'id ASC'
      ]);
      while ($data = $iterator->next()) {
         $users[$data['type']][] = $data;
      }
      return $users;
   }


   /**
    * @param $items_id
    * @param $email
   **/
   function isAlternateEmailForITILObject($items_id, $email) {
      global $DB;

      $iterator = $DB->request([
         'FROM'   => $this->getTable(),
         'WHERE'  => [
            static::getItilObjectForeignKey()   => $items_id,
            'alternative_email'                 => $email
         ],
         'START'  => 0,
         'LIMIT'  => 1
      ]);
      if (count($iterator) > 0) {
         return true;
      }
      return false;
   }


   function canUpdateItem() {

      return (parent::canUpdateItem()
              || (isset($this->fields['users_id'])
                  && ($this->fields['users_id'] == Session::getLoginUserID())));
   }


   /**
    * @since 0.84
   **/
   function canDeleteItem() {

      return (parent::canDeleteItem()
              || (isset($this->fields['users_id'])
                  && ($this->fields['users_id'] == Session::getLoginUserID())));
   }

   /**
    * Print the object user form for notification
    *
    * @param $ID              integer ID of the item
    * @param $options   array
    *
    * @return void
   **/
   function showUserNotificationForm($ID, $options = []) {

      $this->check($ID, UPDATE);

      if (!isset($this->fields['users_id'])) {
         return false;
      }
      $item = new static::$itemtype_1();

      echo "<br><form method='post' action='".$_SERVER['PHP_SELF']."'>";
      echo "<div class='center'>";
      echo "<table class='tab_cadre' width='80%'>";
      echo "<tr class='tab_bg_2'><td>".$item->getTypeName(1)."</td>";
      echo "<td>";
      if ($item->getFromDB($this->fields[static::getItilObjectForeignKey()])) {
         echo $item->getField('name');
      }
      echo "</td></tr>";

      $user          = new User();
      $default_email = "";
      $emails = [];
      if ($user->getFromDB($this->fields["users_id"])) {
         $default_email = $user->getDefaultEmail();
         $emails        = $user->getAllEmails();
      }

      echo "<tr class='tab_bg_2'><td>".User::getTypeName(1)."</td>";
      echo "<td>".$user->getName()."</td></tr>";

      echo "<tr class='tab_bg_1'><td>".__('Email Followup')."</td>";
      echo "<td>";
      Dropdown::showYesNo('use_notification', $this->fields['use_notification']);
      echo "</td></tr>";

      echo "<tr class='tab_bg_1'><td>"._n('Email', 'Emails', 1)."</td>";
      echo "<td>";
      if ((count($emails) ==  1)
          && !empty($default_email)
          && NotificationMailing::isUserAddressValid($default_email)) {
         echo $default_email;

      } else if (count($emails) > 1) {
         // Several emails : select in the list
         $emailtab = [];
         foreach ($emails as $new_email) {
            $emailtab[$new_email] = $new_email;
         }
         Dropdown::showFromArray("alternative_email", $emailtab,
                                 ['value'   => $this->fields['alternative_email']]);
      } else {
         echo "<input type='text' size='40' name='alternative_email' value='".
                $this->fields['alternative_email']."'>";
      }
      echo "</td></tr>";

      echo "<tr class='tab_bg_2'>";
      echo "<td class='center' colspan='2'>";
      echo "<input type='submit' name='update' value=\""._sx('button', 'Save')."\" class='submit'>";
      echo "<input type='hidden' name='id' value='$ID'>";
      echo "</td></tr>";

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


   /**
    * Print the object user form for notification
    *
    * @since 0.85
    *
    * @param $ID              integer ID of the item
    * @param $options   array
    *
    * @return void
   **/
   function showSupplierNotificationForm($ID, $options = []) {

      $this->check($ID, UPDATE);

      if (!isset($this->fields['suppliers_id'])) {
         return false;
      }
      $item = new static::$itemtype_1();

      echo "<br><form method='post' action='".$_SERVER['PHP_SELF']."'>";
      echo "<div class='center'>";
      echo "<table class='tab_cadre' width='80%'>";
      echo "<tr class='tab_bg_2'><td>".$item->getTypeName(1)."</td>";
      echo "<td>";
      if ($item->getFromDB($this->fields[static::getItilObjectForeignKey()])) {
         echo $item->getField('name');
      }
      echo "</td></tr>";

      $supplier      = new Supplier();
      $default_email = "";
      if ($supplier->getFromDB($this->fields["suppliers_id"])) {
         $default_email = $supplier->fields['email'];
      }

      echo "<tr class='tab_bg_2'><td>".Supplier::getTypeName(1)."</td>";
      echo "<td>".$supplier->getName()."</td></tr>";

      echo "<tr class='tab_bg_1'><td>".__('Email Followup')."</td>";
      echo "<td>";
      Dropdown::showYesNo('use_notification', $this->fields['use_notification']);
      echo "</td></tr>";

      echo "<tr class='tab_bg_1'><td>"._n('Email', 'Emails', 1)."</td>";
      echo "<td>";
      if (empty($this->fields['alternative_email'])) {
         $this->fields['alternative_email'] = $default_email;
      }
      echo "<input type='text' size='40' name='alternative_email' value='".
             $this->fields['alternative_email']."'>";
      echo "</td></tr>";

      echo "<tr class='tab_bg_2'>";
      echo "<td class='center' colspan='2'>";
      echo "<input type='submit' name='update' value=\""._sx('button', 'Save')."\" class='submit'>";
      echo "<input type='hidden' name='id' value='$ID'>";
      echo "</td></tr>";

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


   function post_deleteFromDB() {
      global $CFG_GLPI;

      $donotif = !isset($this->input['_disablenotif']) && $CFG_GLPI["use_notifications"];

      $item = $this->getConnexityItem(static::$itemtype_1, static::getItilObjectForeignKey());

      if ($item instanceof CommonDBTM) {
         if (($item->countSuppliers(CommonITILActor::ASSIGN) == 0)
             && ($item->countUsers(CommonITILActor::ASSIGN) == 0)
             && ($item->countGroups(CommonITILActor::ASSIGN) == 0)
             && ($item->fields['status'] != CommonITILObject::CLOSED)
             && ($item->fields['status'] != CommonITILObject::SOLVED)) {

            $status = CommonITILObject::INCOMING;
            if (in_array($item->fields['status'], Change::getNewStatusArray())) {
               $status = $item->fields['status'];
            }
            $item->update(['id'     => $this->fields[static::getItilObjectForeignKey()],
                                'status' => $status]);
         } else {
            $item->updateDateMod($this->fields[static::getItilObjectForeignKey()]);

            if ($donotif) {
               $options = [];
               if (isset($this->fields['users_id'])) {
                  $options = ['_old_user' => $this->fields];
               }
               NotificationEvent::raiseEvent("update", $item, $options);
            }
         }

      }
      parent::post_deleteFromDB();
   }


   /**
    * @since 0.85
    *
    * @see CommonDBRelation::prepareInputForAdd()
   **/
   function prepareInputForAdd($input) {

      if (!isset($input['alternative_email']) || is_null($input['alternative_email'])) {
         $input['alternative_email'] = '';
      } else if ($input['alternative_email'] != '' && !NotificationMailing::isUserAddressValid($input['alternative_email'])) {
         Session::addMessageAfterRedirect(
            __('Invalid email address'),
            false,
            ERROR
         );
         return false;
      }
      return $input;
   }

   function prepareInputForUpdate($input) {
      if (isset($input['alternative_email']) && $input['alternative_email'] == '') {
         if (isset($input['users_id'])) {
            $actor = new User();
            if ($actor->getFromDB($input["users_id"])) {
               $input['alternative_email'] = $actor->getDefaultEmail();
            }
         }
         if (isset($input['suppliers_id'])) {
            $actor = new Supplier;
            if ($actor->getFromDB($input["suppliers_id"])) {
               $input['alternative_email'] = $actor->fields['email'];
            }
         }
      }
      if (isset($input['alternative_email']) && $input['alternative_email'] != ''
          && !NotificationMailing::isUserAddressValid($input['alternative_email'])) {
         Session::addMessageAfterRedirect(
            __('Invalid email address'),
            false,
            ERROR
         );
         return false;
      }

      $input = parent::prepareInputForUpdate($input);
      return $input;
   }

   function post_addItem() {

      $item = new static::$itemtype_1();

      $no_stat_computation = true;
      if ($this->input['type'] == CommonITILActor::ASSIGN) {
         // Compute "take into account delay" unless "do not compute" flag was set by business rules
         $no_stat_computation = $item->isTakeIntoAccountComputationBlocked($this->input);
      }
      $item->updateDateMod($this->fields[static::getItilObjectForeignKey()], $no_stat_computation);

      if ($item->getFromDB($this->fields[static::getItilObjectForeignKey()])) {
         // Check object status and update it if needed
         if (!isset($this->input['_from_object'])
             && in_array($item->fields["status"], $item->getNewStatusArray())
             && in_array(CommonITILObject::ASSIGNED, array_keys($item->getAllStatusArray()))) {
            $item->update(['id'               => $item->getID(),
                           'status'           => CommonITILObject::ASSIGNED,
                           '_from_assignment' => true]);
         }

         // raise notification for this actor addition
         if (!isset($this->input['_disablenotif'])) {
            $string_type = "";
            switch ($this->input['type']) {
               case self::REQUESTER:
                  $string_type = "requester";
                  break;
               case self::OBSERVER:
                  $string_type = "observer";
                  break;
               case self::ASSIGN:
                  $string_type = "assign";
                  break;
            }
            // example for event: assign_group
            $event = $string_type."_".strtolower($this::$itemtype_2);
            NotificationEvent::raiseEvent($event, $item);
         }
      }

      parent::post_addItem();
   }

}