<?php
// +-----------------------------------------------------------------------+
// | Piwigo - a PHP based photo gallery                                    |
// +-----------------------------------------------------------------------+
// | Copyright(C) 2008-2012 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.                                                                  |
// +-----------------------------------------------------------------------+

/**
 * This file is included by the picture page to manage user comments
 *
 */

// the picture is commentable if it belongs at least to one category which
// is commentable
$page['show_comments'] = false;
foreach ($related_categories as $category)
{
  if ($category['commentable'])
  {
    $page['show_comments'] = true;
    break;
  }
}

if ( $page['show_comments'] and isset( $_POST['content'] ) )
{
  if ( is_a_guest() and !$conf['comments_forall'] )
  {
    die ('Session expired');
  }

  $comm = array(
    'author' => trim( @$_POST['author'] ),
    'content' => trim( $_POST['content'] ),
    'image_id' => $page['image_id'],
   );

  include_once(PHPWG_ROOT_PATH.'include/functions_comment.inc.php');

  $comment_action = insert_user_comment($comm, @$_POST['key'], $page['infos']);

  switch ($comment_action)
  {
    case 'moderate':
      array_push($page['infos'], l10n('An administrator must authorize your comment before it is visible.') );
    case 'validate':
      array_push($page['infos'], l10n('Your comment has been registered'));
      break;
    case 'reject':
      set_status_header(403);
      array_push($page['errors'], l10n('Your comment has NOT been registered because it did not pass the validation rules') );
      break;
    default:
      trigger_error('Invalid comment action '.$comment_action, E_USER_WARNING);
  }

  // allow plugins to notify what's going on
  trigger_action( 'user_comment_insertion',
      array_merge($comm, array('action'=>$comment_action) )
    );
}
elseif ( isset($_POST['content']) )
{
  set_status_header(403);
  die('ugly spammer');
}

if ($page['show_comments'])
{
  if ( !is_admin() )
  {
    $validated_clause = '  AND validated = \'true\'';
  }
  else
  {
    $validated_clause = '';
  }

  // number of comments for this picture
  $query = '
SELECT
    COUNT(*) AS nb_comments
  FROM '.COMMENTS_TABLE.'
  WHERE image_id = '.$page['image_id']
  .$validated_clause.'
;';
  $row = pwg_db_fetch_assoc( pwg_query( $query ) );

  // navigation bar creation
  if (!isset($page['start']))
  {
    $page['start'] = 0;
  }

  $navigation_bar = create_navigation_bar(
    duplicate_picture_url(array(), array('start')),
    $row['nb_comments'],
    $page['start'],
    $conf['nb_comment_page'],
    true // We want a clean URL
    );

  $template->assign(
    array(
      'COMMENT_COUNT' => $row['nb_comments'],
      'navbar' => $navigation_bar,
      )
    );

  if ($row['nb_comments'] > 0)
  {
    // comments order (get, session, conf)
    if (!empty($_GET['comments_order']) && in_array(strtoupper($_GET['comments_order']), array('ASC', 'DESC')))
    {
      pwg_set_session_var('comments_order', $_GET['comments_order']);
    }
    $comments_order = pwg_get_session_var('comments_order', $conf['comments_order']);

    $template->assign(array(
      'COMMENTS_ORDER_URL' => add_url_params( duplicate_picture_url(), array('comments_order'=> ($comments_order == 'ASC' ? 'DESC' : 'ASC') ) ),
      'COMMENTS_ORDER_TITLE' => $comments_order == 'ASC' ? l10n('Show latest comments first') : l10n('Show oldest comments first'),
      ));
        
    $query = '
SELECT
    com.id,
    author,
    author_id,
    '.$conf['user_fields']['username'].' AS username,
    date,
    image_id,
    content,
    validated
  FROM '.COMMENTS_TABLE.' AS com
  LEFT JOIN '.USERS_TABLE.' AS u
    ON u.'.$conf['user_fields']['id'].' = author_id
  WHERE image_id = '.$page['image_id'].'
    '.$validated_clause.'
  ORDER BY date '.$comments_order.'
  LIMIT '.$conf['nb_comment_page'].' OFFSET '.$page['start'].'
;';
    $result = pwg_query( $query );

    while ($row = pwg_db_fetch_assoc($result))
    {
      if (!empty($row['author']))
      {
	$author = $row['author'];
	if ($author == 'guest')
	{
	  $author = l10n('guest');
	}
      }
      else
      {
	$author = stripslashes($row['username']);
      }

      $tpl_comment =
        array(
          'ID' => $row['id'],
          'AUTHOR' => trigger_event('render_comment_author', $author),
          'DATE' => format_date($row['date'], true),
          'CONTENT' => trigger_event('render_comment_content',$row['content']),
        );

      if (can_manage_comment('delete', $row['author_id']))
      {
        $tpl_comment['U_DELETE'] = add_url_params(
          $url_self,
          array(
            'action'=>'delete_comment',
            'comment_to_delete'=>$row['id'],
            'pwg_token' => get_pwg_token(),
            )
          );
      }
      if (can_manage_comment('edit', $row['author_id']))
      {
        $tpl_comment['U_EDIT'] = add_url_params(
          $url_self,
          array(
            'action'=>'edit_comment',
            'comment_to_edit'=>$row['id'],
            )
          );
          if (isset($edit_comment) and ($row['id'] == $edit_comment))
          {
            $tpl_comment['IN_EDIT'] = true;
            $key = get_ephemeral_key(2, $page['image_id']);
            $tpl_comment['KEY'] = $key;
            $tpl_comment['CONTENT'] = $row['content'];
            $tpl_comment['PWG_TOKEN'] = get_pwg_token();
            $tpl_comment['U_CANCEL'] = $url_self;
          }
      }
      if (is_admin())
      {
        if ($row['validated'] != 'true')
        {
          $tpl_comment['U_VALIDATE'] = add_url_params(
                  $url_self,
                  array(
                    'action' => 'validate_comment',
                    'comment_to_validate' => $row['id'],
                    'pwg_token' => get_pwg_token(),
                    )
                  );
        }
      }
      $template->append('comments', $tpl_comment);
    }
  }

  $show_add_comment_form = true;
  if (isset($edit_comment))
  {
    $show_add_comment_form = false;
  }
  if (is_a_guest() and !$conf['comments_forall'])
  {
    $show_add_comment_form = false;
  }

  if ($show_add_comment_form)
  {
    $key = get_ephemeral_key(3, $page['image_id']);
    $content = $author = '';
    if ('reject'===@$comment_action)
    {
      $content = htmlspecialchars( stripslashes($comm['content']) );
      $author = htmlspecialchars( stripslashes($comm['author']) );
    }
    $template->assign('comment_add',
        array(
          'F_ACTION' => $url_self,
          'KEY' => $key,
          'CONTENT' => $content,
          'SHOW_AUTHOR' => !is_classic_user(),
          'AUTHOR' => $author ,
        ));
  }
}

?>