source: extensions/de_activate_all_languages/initadmin.php

<?php
// +-----------------------------------------------------------------------+
// | de_activate all language plugin for piwigo by TEMMII                  |
// +-----------------------------------------------------------------------+
// | Copyright(C) 2010-2023 ddtddt               http://temmii.com/piwigo/ |
// +-----------------------------------------------------------------------+
// | This program 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                                          |
// |                                                                       |
// | This program 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 this program; if not, write to the Free Software           |
// | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
// | USA.                                                                  |
// +-----------------------------------------------------------------------+

include_once(PHPWG_ROOT_PATH.'include/common.inc.php');
include_once(PHPWG_ROOT_PATH.'admin/include/languages.class.php');

//add prefiltre photo
add_event_handler('loc_begin_admin', 'plugDalPf',60);
add_event_handler('loc_begin_admin_page', 'plugDal_action');

function plugDalPf(){
  global $template, $conf;
  $admin_base_url = $_SERVER['REQUEST_URI'];
   $template->assign(
    array(
                'U_DAL' => $admin_base_url . '&amp;deactivatelanguage',
                'U_DALA' => $admin_base_url . '&amp;activatelanguage',
  ));
  
  if(isset($conf['de_activate_all_language'])){
  $template->assign('U_RDAL',($admin_base_url . '&amp;reactivatelanguage'));
  }
  
  $template->set_prefilter('languages', 'plugDalPT');
}

function plugDalPT($content){
  global $template;
  $search = '{/footer_script}';
  $replacement = '
{/footer_script}  
{combine_script id=\'jquery.confirm\' load=\'footer\' require=\'jquery\' path=\'themes/default/js/plugins/jquery-confirm.min.js\'}
{combine_css path="themes/default/js/plugins/jquery-confirm.min.css"}
{footer_script}
const confirm_msg = "{"Yes, I am sure"|@translate}";
const cancel_msg = "{"No, I have changed my mind"|@translate}";
$(".purge-search-dal").each(function() {
  const title = \'{"Are you sure?"|@translate|@escape:\'javascript\'}\';
  $(this).pwg_jconfirm_follow_href({
    alert_title: title,
    alert_confirm: confirm_msg,
    alert_cancel: cancel_msg
  });
});
$(".purge-search-rdal").each(function() {
  const title = \'{"Are you sure?"|@translate|@escape:\'javascript\'}\';
  $(this).pwg_jconfirm_follow_href({
    alert_title: title,
    alert_confirm: confirm_msg,
    alert_cancel: cancel_msg
  });
});
$(".purge-search-ddal").each(function() {
  const title = \'{"Are you sure?"|@translate|@escape:\'javascript\'}\';
  $(this).pwg_jconfirm_follow_href({
    alert_title: title,
    alert_confirm: confirm_msg,
    alert_cancel: cancel_msg
  });
});

{/footer_script}
<p style="text-align:left; padding:10px;">
<a href="{$U_DAL}" class="purge-search-dal">{\'Deactivate all language\'|@translate}</a>
{if isset ($U_RDAL)}
| <a href="{$U_RDAL}" class="purge-search-rdal">{\'Activate language Deactivate\'|@translate}</a>
{/if}
| <a href="{$U_DALA}" class="purge-search-ddal">{\'Activate all language\'|@translate}</a>
</p>

 ';
  return str_replace($search,$replacement, $content);
}
 
function plugDal_action(){
  load_language('plugin.lang', DAL_PATH);
  global $template, $conf;
  
  if (isset($_GET['deactivatelanguage'])) {
        $admin_base_url=explode('&deactivatelanguage', $_SERVER['REQUEST_URI']);
    $activelang=array();
        $query = 'SELECT * FROM '.LANGUAGES_TABLE.';';
        $result=pwg_query($query);
        while ($row = pwg_db_fetch_assoc($result))
          {
        $activelang[]=array(
                  'id'=>$row['id'],
                  'version'=>$row['version'],
                  'name'=>$row['name'],           
                );
      }
        if(count($activelang)!=1){
        conf_update_param('de_activate_all_language', $activelang);
        }
        
        $default_language = get_default_language();
    $query = 'DELETE FROM '.LANGUAGES_TABLE.' WHERE id!= \''.$default_language.'\';';
        pwg_query($query);
        redirect($admin_base_url[0]);
          }
          
  if (isset($_GET['activatelanguage'])) {
        $admin_base_url=explode('&activatelanguage', $_SERVER['REQUEST_URI']);
        $languages = new languages();
        $languages->get_db_languages();
        
        foreach ($languages as $key => $language){
                foreach ($language as $key => $lang){
                  if (isset($lang['code'])){
                        $query = 'INSERT INTO '.LANGUAGES_TABLE.'(id, version, name) VALUES(\''.$lang['code'].'\',\''.$lang['version'].'\',\''.$lang['name'].'\');';
                        $q = 'SELECT 1 FROM ' . LANGUAGES_TABLE . ' WHERE id= \'' . $lang['code'] . '\';';
                        $test = pwg_query($q);
                        $row = pwg_db_fetch_assoc($test);
                        if (is_null($row)) {
              $query = 'INSERT INTO '.LANGUAGES_TABLE.'(id, version, name) VALUES(\''.$lang['code'].'\',\''.$lang['version'].'\',\''.$lang['name'].'\');';
                          pwg_query($query);
                        }
                  }
                }
        }
        redirect($admin_base_url[0]);
  }

  if (isset($_GET['reactivatelanguage'])) {
        $admin_base_url=explode('&reactivatelanguage', $_SERVER['REQUEST_URI']);
        $reaclang = safe_unserialize($conf['de_activate_all_language']);
        foreach ($reaclang as $key => $lang){
          if($lang['id']!=get_default_language()){
                $query = 'INSERT INTO '.LANGUAGES_TABLE.'(id, version, name) VALUES(\''.$lang['id'].'\',\''.$lang['version'].'\',\''.$lang['name'].'\');';
                pwg_query($query);
          }
        }
        conf_delete_param('de_activate_all_language', $activelang);
        redirect($admin_base_url[0]);
  }         
          
}