<?php
// +-----------------------------------------------------------------------+
// | Piwigo - a PHP based picture gallery                                  |
// +-----------------------------------------------------------------------+
// | Copyright(C) 2008-2010 Piwigo Team                  http://piwigo.org |
// | Copyright(C) 2003-2008 PhpWebGallery Team    http://phpwebgallery.net |
// | Copyright(C) 2002-2003 Pierrick LE GALL   http://le-gall.net/pierrick |
// +-----------------------------------------------------------------------+
// | 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.                                                                  |
// +-----------------------------------------------------------------------+

if (!defined('IN_ADMIN'))
{
  die('Hacking attempt!');
}

include_once(PHPWG_ROOT_PATH.'admin/include/functions.php');

// +-----------------------------------------------------------------------+
// | Check Access and exit when user status is not ok                      |
// +-----------------------------------------------------------------------+
check_status(ACCESS_ADMINISTRATOR);

// +-----------------------------------------------------------------------+
// |                            variables init                             |
// +-----------------------------------------------------------------------+

if (isset($_GET['user_id']) and is_numeric($_GET['user_id']))
{
  $page['user'] = $_GET['user_id'];
}
else
{
  die('user_id URL parameter is missing');
}

// +-----------------------------------------------------------------------+
// |                                updates                                |
// +-----------------------------------------------------------------------+

if (isset($_POST['falsify'])
    and isset($_POST['cat_true'])
    and count($_POST['cat_true']) > 0)
{
  // if you forbid access to a category, all sub-categories become
  // automatically forbidden
  $subcats = get_subcat_ids($_POST['cat_true']);
  $query = '
DELETE FROM '.USER_ACCESS_TABLE.'
  WHERE user_id = '.$page['user'].'
    AND cat_id IN ('.implode(',', $subcats).')
;';
  pwg_query($query);
}
else if (isset($_POST['trueify'])
         and isset($_POST['cat_false'])
         and count($_POST['cat_false']) > 0)
{
  $uppercats = get_uppercat_ids($_POST['cat_false']);
  $private_uppercats = array();

  $query = '
SELECT id
  FROM '.CATEGORIES_TABLE.'
  WHERE id IN ('.implode(',', $uppercats).')
    AND status = \'private\'
;';
  $result = pwg_query($query);
  while ($row = pwg_db_fetch_assoc($result))
  {
    array_push($private_uppercats, $row['id']);
  }

  // retrying to authorize a category which is already authorized may cause
  // an error (in SQL statement), so we need to know which categories are
  // accesible
  $authorized_ids = array();

  $query = '
SELECT cat_id
  FROM '.USER_ACCESS_TABLE.'
  WHERE user_id = '.$page['user'].'
;';
  $result = pwg_query($query);

  while ($row = pwg_db_fetch_assoc($result))
  {
    array_push($authorized_ids, $row['cat_id']);
  }

  $inserts = array();
  $to_autorize_ids = array_diff($private_uppercats, $authorized_ids);
  foreach ($to_autorize_ids as $to_autorize_id)
  {
    array_push($inserts, array('user_id' => $page['user'],
                               'cat_id' => $to_autorize_id));
  }

  mass_inserts(USER_ACCESS_TABLE, array('user_id','cat_id'), $inserts);
}

// +-----------------------------------------------------------------------+
// |                             template init                             |
// +-----------------------------------------------------------------------+

$template->set_filenames(
  array(
    'user_perm' => 'user_perm.tpl',
    'double_select' => 'double_select.tpl'
    )
  );

$template->assign(
  array(
    'TITLE' =>
      sprintf(
        l10n('Manage permissions for user "%s"'),
        get_username($page['user']
          )
        ),
    'L_CAT_OPTIONS_TRUE'=>l10n('Authorized'),
    'L_CAT_OPTIONS_FALSE'=>l10n('Forbidden'),

    'F_ACTION' =>
        PHPWG_ROOT_PATH.
        'admin.php?page=user_perm'.
        '&amp;user_id='.$page['user']
    )
  );


// retrieve category ids authorized to the groups the user belongs to
$group_authorized = array();

$query = '
SELECT DISTINCT cat_id, c.uppercats, c.global_rank
  FROM '.USER_GROUP_TABLE.' AS ug
    INNER JOIN '.GROUP_ACCESS_TABLE.' AS ga
      ON ug.group_id = ga.group_id
    INNER JOIN '.CATEGORIES_TABLE.' AS c
      ON c.id = ga.cat_id
  WHERE ug.user_id = '.$page['user'].'
;';
$result = pwg_query($query);

if (pwg_db_num_rows($result) > 0)
{
  $cats = array();
  while ($row = pwg_db_fetch_assoc($result))
  {
    array_push($cats, $row);
    array_push($group_authorized, $row['cat_id']);
  }
  usort($cats, 'global_rank_compare');

  foreach ($cats as $category)
  {
    $template->append(
      'categories_because_of_groups',
      get_cat_display_name_cache($category['uppercats'], null, false)
      );
  }
}

// only private categories are listed
$query_true = '
SELECT id,name,uppercats,global_rank
  FROM '.CATEGORIES_TABLE.' INNER JOIN '.USER_ACCESS_TABLE.' ON cat_id = id
  WHERE status = \'private\'
    AND user_id = '.$page['user'];
if (count($group_authorized) > 0)
{
  $query_true.= '
    AND cat_id NOT IN ('.implode(',', $group_authorized).')';
}
$query_true.= '
;';
display_select_cat_wrapper($query_true,array(),'category_option_true');

$result = pwg_query($query_true);
$authorized_ids = array();
while ($row = pwg_db_fetch_assoc($result))
{
  array_push($authorized_ids, $row['id']);
}

$query_false = '
SELECT id,name,uppercats,global_rank
  FROM '.CATEGORIES_TABLE.'
  WHERE status = \'private\'';
if (count($authorized_ids) > 0)
{
  $query_false.= '
    AND id NOT IN ('.implode(',', $authorized_ids).')';
}
if (count($group_authorized) > 0)
{
  $query_false.= '
    AND id NOT IN ('.implode(',', $group_authorized).')';
}
$query_false.= '
;';
display_select_cat_wrapper($query_false,array(),'category_option_false');

// +-----------------------------------------------------------------------+
// |                           sending html code                           |
// +-----------------------------------------------------------------------+

$template->assign_var_from_handle('DOUBLE_SELECT', 'double_select');
$template->assign_var_from_handle('ADMIN_CONTENT', 'user_perm');
?>
