<?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");
}

/**
 * Disk Class
**/
class Item_Disk extends CommonDBChild {

   // From CommonDBChild
   static public $itemtype = 'itemtype';
   static public $items_id = 'items_id';
   public $dohistory       = true;

   // Encryption status
   const ENCRYPTION_STATUS_NO = 0;
   const ENCRYPTION_STATUS_YES = 1;
   const ENCRYPTION_STATUS_PARTIALLY = 2;

   static function getTypeName($nb = 0) {
      return _n('Volume', 'Volumes', $nb);
   }

   function post_getEmpty() {

      $this->fields["totalsize"] = '0';
      $this->fields["freesize"]  = '0';
   }


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

      // can exists for template
      if ($item::canView()) {
         $nb = 0;
         if ($_SESSION['glpishow_count_on_tabs']) {
            $nb = countElementsInTable(
               self::getTable(), [
                  'items_id'     => $item->getID(),
                  'itemtype'     => $item->getType(),
                  'is_deleted'   => 0
               ]);
         }
         return self::createTabEntry(self::getTypeName(Session::getPluralNumber()), $nb);
      }
      return '';
   }


   /**
    * @param $item            CommonGLPI object
    * @param $tabnum          (default 1)
    * @param $withtemplate    (default 0)
    */
   static function displayTabContentForItem(CommonGLPI $item, $tabnum = 1, $withtemplate = 0) {

      self::showForItem($item, $withtemplate);
      return true;
   }


   function defineTabs($options = []) {

      $ong = [];
      $this->addDefaultFormTab($ong);
      $this->addStandardTab('Log', $ong, $options);

      return $ong;
   }


   /**
    * Duplicate all disks from an item template to his clone
    *
    * @deprecated 9.5
    * @since 0.84
    *
    * @param string  $type  Item type
    * @param integer $oldid Old ID
    * @param integer $newid New id
    *
    * @return void
   **/
   static function cloneItem($type, $oldid, $newid) {
      global $DB;

      Toolbox::deprecated('Use clone');
      $iterator = $DB->request([
         'FROM'   => self::getTable(),
         'WHERE'  => [
            'itemtype'  => $type,
            'items_id'  => $oldid
         ]
      ]);
      while ($data = $iterator->next()) {
         $cd                  = new self();
         unset($data['id']);
         $data['items_id']    = $newid;
         $data                = Toolbox::addslashes_deep($data);
         $cd->add($data);
      }
   }


   /**
    * Print the version form
    *
    * @param $ID        integer ID of the item
    * @param $options   array
    *     - target for the Form
    *     - itemtype type of the item for add process
    *     - items_id ID of the item for add process
    *
    * @return true if displayed  false if item not found or not right to display
   **/
   function showForm($ID, $options = []) {
      $itemtype = null;
      if (isset($options['itemtype']) && !empty($options['itemtype'])) {
         $itemtype = $options['itemtype'];
      } else if (isset($this->fields['itemtype']) && !empty($this->fields['itemtype'])) {
         $itemtype = $this->fields['itemtype'];
      } else {
         throw new \RuntimeException('Unable to retrieve itemtype');
      }

      if (!Session::haveRight($itemtype::$rightname, READ)) {
         return false;
      }

      $item = new $itemtype();
      if ($ID > 0) {
         $this->check($ID, READ);
         $item->getFromDB($this->fields['items_id']);
      } else {
         $this->check(-1, CREATE, $options);
         $item->getFromDB($options['items_id']);
      }

      $this->showFormHeader($options);

      if ($this->isNewID($ID)) {
         echo "<input type='hidden' name='items_id' value='".$options['items_id']."'>";
         echo "<input type='hidden' name='itemtype' value='".$options['itemtype']."'>";
      }

      echo "<tr class='tab_bg_1'>";
      echo "<td>"._n('Item', 'Items', 1)."</td>";
      echo "<td>".$item->getLink()."</td>";
      if (Plugin::haveImport()) {
         echo "<td>".__('Automatic inventory')."</td>";
         echo "<td>";
         if ($ID && $this->fields['is_dynamic']) {
            Plugin::doHook("autoinventory_information", $this);
         } else {
            echo __('No');
         }
         echo "</td>";
      } else {
         echo "<td colspan='2'></td>";
      }
      echo "</tr>\n";

      echo "<tr class='tab_bg_1'>";
      echo "<td>".__('Name')."</td>";
      echo "<td>";
      Html::autocompletionTextField($this, "name");
      echo "</td><td>".__('Partition')."</td>";
      echo "<td>";
      Html::autocompletionTextField($this, "device");
      echo "</td></tr>";

      echo "<tr class='tab_bg_1'>";
      echo "<td>".__('Mount point')."</td>";
      echo "<td>";
      Html::autocompletionTextField($this, "mountpoint");
      echo "</td><td>".Filesystem::getTypeName(1)."</td>";
      echo "<td>";
      Filesystem::dropdown(['value' => $this->fields["filesystems_id"]]);
      echo "</td></tr>";

      echo "<tr class='tab_bg_1'>";
      echo "<td>".__('Global size')."</td>";
      echo "<td>";
      Html::autocompletionTextField($this, "totalsize");
      echo "&nbsp;".__('Mio')."</td>";

      echo "<td>".__('Free size')."</td>";
      echo "<td>";
      Html::autocompletionTextField($this, "freesize");
      echo "&nbsp;".__('Mio')."</td></tr>";

      echo "<tr class='tab_bg_1'>";
      echo "<td>".__('Encryption')."</td>";
      echo "<td>";
      echo self::getEncryptionStatusDropdown($this->fields['encryption_status']);
      echo "</td><td>".__('Encryption tool')."</td>";
      echo "<td>";
      Html::autocompletionTextField($this, "encryption_tool");
      echo "</td></tr>";

      echo "<tr class='tab_bg_1'>";
      echo "<td>".__('Encryption algorithm')."</td>";
      echo "<td>";
      Html::autocompletionTextField($this, "encryption_algorithm");
      echo "</td><td>".__('Encryption type')."</td>";
      echo "<td>";
      Html::autocompletionTextField($this, "encryption_type");
      echo "</td></tr>";

      $itemtype = $this->fields['itemtype'];
      $options['canedit'] = Session::haveRight($itemtype::$rightname, UPDATE);
      $this->showFormButtons($options);

      return true;

   }

   /**
    * Get disks related to a given item
    *
    * @param CommonDBTM $item  Item instance
    * @param string     $sort  Field to sort on
    * @param string     $order Sort order
    *
    * @return DBmysqlIterator
    */
   public static function getFromItem(CommonDBTM $item, $sort = null, $order = null): DBmysqlIterator {
      global $DB;

      $iterator = $DB->request([
         'SELECT'    => [
            Filesystem::getTable() . '.name AS fsname',
            self::getTable() . '.*'
         ],
         'FROM'      => self::getTable(),
         'LEFT JOIN' => [
            Filesystem::getTable() => [
               'FKEY' => [
                  self::getTable()        => 'filesystems_id',
                  Filesystem::getTable()  => 'id'
               ]
            ]
         ],
         'WHERE'     => [
            'itemtype'     => $item->getType(),
            'items_id'     => $item->fields['id']
         ]
      ]);
      return $iterator;
   }

   /**
    * Print the disks
    *
    * @param CommonDBTM $item          Item object
    * @param boolean    $withtemplate  Template or basic item (default 0)
    *
    * @return void
   **/
   static function showForItem(CommonDBTM $item, $withtemplate = 0) {
      global $DB;

      $ID = $item->fields['id'];
      $itemtype = $item->getType();

      if (!$item->getFromDB($ID)
          || !$item->can($ID, READ)) {
         return false;
      }
      $canedit = $item->canEdit($ID);

      if ($canedit
          && !(!empty($withtemplate) && ($withtemplate == 2))) {
         echo "<div class='center firstbloc'>".
               "<a class='vsubmit' href='".self::getFormURL()."?itemtype=$itemtype&items_id=$ID&amp;withtemplate=".
                  $withtemplate."'>";
         echo __('Add a volume');
         echo "</a></div>\n";
      }

      echo "<div class='center'>";

      $iterator = self::getFromItem($item);
      echo "<table class='tab_cadre_fixehov'>";
      $colspan = 8;
      if (Plugin::haveImport()) {
         $colspan++;
      }
      echo "<tr class='noHover'><th colspan='$colspan'>".self::getTypeName(count($iterator)).
            "</th></tr>";

      if (count($iterator)) {

         $header = "<tr><th>".__('Name')."</th>";
         if (Plugin::haveImport()) {
            $header .= "<th>".__('Automatic inventory')."</th>";
         }
         $header .= "<th>".__('Partition')."</th>";
         $header .= "<th>".__('Mount point')."</th>";
         $header .= "<th>".Filesystem::getTypeName(1)."</th>";
         $header .= "<th>".__('Global size')."</th>";
         $header .= "<th>".__('Free size')."</th>";
         $header .= "<th>".__('Free percentage')."</th>";
         $header .= "<th>".__('Encryption')."</th>";
         $header .= "</tr>";
         echo $header;

         Session::initNavigateListItems(__CLASS__,
                           //TRANS : %1$s is the itemtype name,
                           //        %2$s is the name of the item (used for headings of a list)
                                          sprintf(__('%1$s = %2$s'),
                                                $item::getTypeName(1), $item->getName()));

         $disk = new self();
         while ($data = $iterator->next()) {
            $disk->getFromResultSet($data);
            echo "<tr class='tab_bg_2" .(isset($data['is_deleted']) && $data['is_deleted'] ? " tab_bg_2_2'" : "'")."'>";
            echo "<td>".$disk->getLink()."</td>";
            if (Plugin::haveImport()) {
               echo "<td>".Dropdown::getYesNo($data['is_dynamic'])."</td>";
            }
            echo "<td>".$data['device']."</td>";
            echo "<td>".$data['mountpoint']."</td>";
            echo "<td>".$data['fsname']."</td>";
            //TRANS: %s is a size
            $tmp = Toolbox::getSize($data['totalsize'] * 1024 * 1024);
            echo "<td class='right'>$tmp<span class='small_space'></span></td>";
            $tmp = Toolbox::getSize($data['freesize'] * 1024 * 1024);
            echo "<td class='right'>$tmp<span class='small_space'></span></td>";
            echo "<td>";
            $percent = 0;
            if ($data['totalsize'] > 0) {
               $percent = round(100*$data['freesize']/$data['totalsize']);
            }
            $rand = mt_rand();
            Html::progressBar("percent$rand", [
               'create'  => true,
               'percent' => $percent,
               'message' => "$percent %",
            ]);
            echo "</td>";
            echo "<td class=\"center\">";

            if ($data['encryption_status'] != self::ENCRYPTION_STATUS_NO) {
               $encryptionTooltip = "<strong>" . __('Partial encryption') . "</strong> : " .
                  Dropdown::getYesNo($data['encryption_status'] == self::ENCRYPTION_STATUS_PARTIALLY) .
                  "<br/>" .
                  "<strong>" . __('Encryption tool') . "</strong> : " . $data['encryption_tool'] .
                  "</br>" .
                  "<strong>" . __('Encryption algorithm') . "</strong> : " .
                  $data['encryption_algorithm'] . "</br>" .
                  "<strong>" . __('Encryption type') . "</strong> : " . $data['encryption_type'] .
                  "</br>";

               Html::showTooltip($encryptionTooltip, [
                  'awesome-class' => "fas fa-lock"
               ]);
            }

            echo "</td>";
            echo "</tr>";
            Session::addToNavigateListItems(__CLASS__, $data['id']);
         }
         echo $header;
      } else {
         echo "<tr class='tab_bg_2'><th colspan='$colspan'>".__('No item found')."</th></tr>";
      }

      echo "</table>";
      echo "</div>";
   }

   function rawSearchOptions() {

      $tab = [];

      $tab[] = [
         'id'                 => 'common',
         'name'               => __('Characteristics')
      ];

      $tab[] = [
         'id'                 => '1',
         'table'              => $this->getTable(),
         'field'              => 'name',
         'name'               => __('Name'),
         'datatype'           => 'itemlink',
         'massiveaction'      => false,
         'autocomplete'       => true,
      ];

      $tab[] = [
         'id'                 => '2',
         'table'              => $this->getTable(),
         'field'              => 'device',
         'name'               => __('Partition'),
         'datatype'           => 'string',
         'massiveaction'      => false,
         'autocomplete'       => true,
      ];

      $tab[] = [
         'id'                 => '3',
         'table'              => $this->getTable(),
         'field'              => 'mountpoint',
         'name'               => __('Mount point'),
         'datatype'           => 'string',
         'massiveaction'      => false,
         'autocomplete'       => true,
      ];

      $tab[] = [
         'id'                 => '4',
         'table'              => $this->getTable(),
         'field'              => 'totalsize',
         'unit'               => 'auto',
         'name'               => __('Global size'),
         'datatype'           => 'number',
         'width'              => 1000,
         'massiveaction'      => false,
         'autocomplete'       => true,
      ];

      $tab[] = [
         'id'                 => '5',
         'table'              => $this->getTable(),
         'field'              => 'freesize',
         'unit'               => 'auto',
         'name'               => __('Free size'),
         'datatype'           => 'number',
         'width'              => 1000,
         'massiveaction'      => false,
         'autocomplete'       => true,
      ];

      return $tab;
   }

   public static function rawSearchOptionsToAdd($itemtype) {
      $tab = [];

      $name = _n('Volume', 'Volumes', Session::getPluralNumber());
      $tab[] = [
          'id'                 => 'disk',
          'name'               => $name
      ];

      $tab[] = [
         'id'                 => '156',
         'table'              => self::getTable(),
         'field'              => 'name',
         'name'               => __('Name'),
         'forcegroupby'       => true,
         'massiveaction'      => false,
         'datatype'           => 'dropdown',
         'joinparams'         => [
            'jointype'           => 'itemtype_item'
         ]
      ];

      $tab[] = [
         'id'                 => '150',
         'table'              => self::getTable(),
         'field'              => 'totalsize',
         'unit'               => 'auto',
         'name'               => __('Global size'),
         'forcegroupby'       => true,
         'usehaving'          => true,
         'datatype'           => 'number',
         'width'              => 1000,
         'massiveaction'      => false,
         'joinparams'         => [
            'jointype'           => 'itemtype_item'
         ]
      ];

      $tab[] = [
         'id'                 => '151',
         'table'              => self::getTable(),
         'field'              => 'freesize',
         'unit'               => 'auto',
         'name'               => __('Free size'),
         'forcegroupby'       => true,
         'datatype'           => 'number',
         'width'              => 1000,
         'massiveaction'      => false,
         'joinparams'         => [
            'jointype'           => 'itemtype_item'
         ]
      ];

      $tab[] = [
         'id'                 => '152',
         'table'              => self::getTable(),
         'field'              => 'freepercent',
         'name'               => __('Free percentage'),
         'forcegroupby'       => true,
         'datatype'           => 'progressbar',
         'width'              => 2,
         'computation'        => 'ROUND(100*TABLE.freesize/TABLE.totalsize)',
         'computationgroupby' => true,
         'unit'               => '%',
         'massiveaction'      => false,
         'joinparams'         => [
            'jointype'           => 'itemtype_item'
         ]
      ];

      $tab[] = [
         'id'                 => '153',
         'table'              => self::getTable(),
         'field'              => 'mountpoint',
         'name'               => __('Mount point'),
         'forcegroupby'       => true,
         'massiveaction'      => false,
         'datatype'           => 'string',
         'joinparams'         => [
            'jointype'           => 'itemtype_item'
         ]
      ];

      $tab[] = [
         'id'                 => '154',
         'table'              => self::getTable(),
         'field'              => 'device',
         'name'               => __('Partition'),
         'forcegroupby'       => true,
         'massiveaction'      => false,
         'datatype'           => 'string',
         'joinparams'         => [
            'jointype'           => 'itemtype_item'
         ]
      ];

      $tab[] = [
         'id'                 => '155',
         'table'              => 'glpi_filesystems',
         'field'              => 'name',
         'name'               => Filesystem::getTypeName(1),
         'forcegroupby'       => true,
         'massiveaction'      => false,
         'datatype'           => 'dropdown',
         'joinparams'         => [
            'beforejoin'         => [
               'table'              => self::getTable(),
               'joinparams'         => [
                  'jointype'           => 'itemtype_item'
               ]
            ]
         ]
      ];

      $tab[] = [
         'id'                 => '174',
         'table'              => self::getTable(),
         'field'              => 'encryption_status',
         'name'               => __('Encryption status'),
         'searchtype'         => 'equals',
         'forcegroupby'       => true,
         'massiveaction'      => false,
         'searchequalsonfield' => true,
         'datatype'           => 'specific',
         'joinparams'         => [
            'jointype'           => 'itemtype_item'
         ]
      ];

      $tab[] = [
         'id'                 => '175',
         'table'              => self::getTable(),
         'field'              => 'encryption_tool',
         'name'               => __('Encryption tool'),
         'forcegroupby'       => true,
         'massiveaction'      => false,
         'datatype'           => 'string',
         'joinparams'         => [
            'jointype'           => 'itemtype_item'
         ]
      ];

      $tab[] = [
         'id'                 => '176',
         'table'              => self::getTable(),
         'field'              => 'encryption_algorithm',
         'name'               => __('Encryption algorithm'),
         'forcegroupby'       => true,
         'massiveaction'      => false,
         'datatype'           => 'string',
         'joinparams'         => [
            'jointype'           => 'itemtype_item'
         ]
      ];

      $tab[] = [
         'id'                 => '177',
         'table'              => self::getTable(),
         'field'              => 'encryption_type',
         'name'               => __('Encryption type'),
         'forcegroupby'       => true,
         'massiveaction'      => false,
         'datatype'           => 'string',
         'joinparams'         => [
            'jointype'           => 'itemtype_item'
         ]
      ];

      return $tab;
   }

   /**
    * Get all the possible value for the "encryption_status" field
    *
    * @return array The list of possible values
    */
   static function getAllEncryptionStatus() {
      return [
         self::ENCRYPTION_STATUS_NO          => __('Not encrypted'),
         self::ENCRYPTION_STATUS_PARTIALLY   => __('Partially encrypted'),
         self::ENCRYPTION_STATUS_YES         => __('Encrypted'),
      ];
   }

   /**
    * Get the correct label for each encryption status
    *
    * @return string The appropriate label
    */
   static function getEncryptionStatus($status) {
      $all = self::getAllEncryptionStatus();
      if (!isset($all[$status])) {
         Toolbox::logWarning(
            sprintf(
               'Encryption status %1$s does not exixts!', $status
            )
         );
         return NOT_AVAILABLE;
      }
      return $all[$status];
   }

   /**
    * Print the encryption status dropdown
    *
    * @param integer $value   Current value (defaut self::ENCRYPTION_STATUS_NO)
    * @param array   $options Array of possible options:
    *    - name : name of the dropdown (default encryption_status)
    *
    * @return string the string to display
    */
   static function getEncryptionStatusDropdown($value = self::ENCRYPTION_STATUS_NO, $options = []) {
      $name = 'encryption_status';
      if (isset($options['name'])) {
         $name = $options['name'];
      }
      $values = self::getAllEncryptionStatus();

      return Dropdown::showFromArray(
         $name,
         $values, [
            'value'   => $value,
            'display' => false
         ]
      );
   }

   /**
    * List specifics value for selection
    *
    * @param string       $field   Name of the field
    * @param string       $name    Name of the select (if empty use linkfield) (default '')
    * @param string|array $values  Value(s) to select (default '')
    * @param array        $options Array of options
    *
    * @return string the string to display
    */
   static function getSpecificValueToSelect($field, $name = '', $values = '', array $options = []) {
      if (!is_array($values)) {
         $values = [$field => $values];
      }
      $options['display'] = false;

      switch ($field) {
         case 'encryption_status' :
            return self::getEncryptionStatusDropdown($values[$field], [
               'name'  => $name,
            ]);
      }
      return parent::getSpecificValueToSelect($field, $name, $values, $options);
   }

    /**
     * Display a specific field value
     *
     * @param string       $field   Name of the field
     * @param string|array $values  Value(s) to display
     * @param array        $options Array of options
     *
     * @return string the string to display
    **/
   static function getSpecificValueToDisplay($field, $values, array $options = []) {
      if (!is_array($values)) {
         $values = [$field => $values];
      }

      switch ($field) {
         case 'encryption_status':
            return self::getEncryptionStatus($values[$field]);
      }

      return parent::getSpecificValueToDisplay($field, $values, $options);
   }
}
