path: root/comments.php

<?php
// +-----------------------------------------------------------------------+
// | PhpWebGallery - a PHP based picture gallery                           |
// | Copyright (C) 2002-2003 Pierrick LE GALL - pierrick@phpwebgallery.net |
// | Copyright (C) 2003-2005 PhpWebGallery Team - http://phpwebgallery.net |
// +-----------------------------------------------------------------------+
// | branch        : BSF (Best So Far)
// | file          : $RCSfile$
// | last update   : $Date$
// | last modifier : $Author$
// | revision      : $Revision$
// +-----------------------------------------------------------------------+
// | 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.                                                                  |
// +-----------------------------------------------------------------------+

// +-----------------------------------------------------------------------+
// |                           initialization                              |
// +-----------------------------------------------------------------------+
if (!defined('IN_ADMIN'))
{
  define('PHPWG_ROOT_PATH','./');
  include_once(PHPWG_ROOT_PATH.'include/common.inc.php');
}

$sort_order = array(
  'descending' => 'DESC',
  'ascending' => 'ASC'
  );

// sort_by : database fields proposed for sorting comments list
$sort_by = array(
  'date' => 'comment date',
  'image_id' => 'picture'
  );

// items_number : list of number of items to display per page
$items_number = array(5,10,20,50,'all');

// since when display comments ?
//
$since_options = array(
  1 => array('label' => l10n('today'),
             'clause' => 'date > SUBDATE(CURDATE(), INTERVAL 1 DAY)'),
  2 => array('label' => sprintf(l10n('last %d days'), 7),
             'clause' => 'date > SUBDATE(CURDATE(), INTERVAL 7 DAY)'),
  3 => array('label' => sprintf(l10n('last %d days'), 30),
             'clause' => 'date > SUBDATE(CURDATE(), INTERVAL 30 DAY)'),
  4 => array('label' => l10n('the beginning'),
             'clause' => '1=1') // stupid but generic
  );

// since
//
$page['since'] = 1;
if (isset($_GET['since']))
{
  if (!isset($since_options{ $_GET['since'] }))
  {
    die('Hacking attempt on "since" GET parameter');
  }
  else
  {
    $page['since'] = $_GET['since'];
  }
}

// on which field sorting
//
$page['sort_by'] = 'date';
// if the form was submitted, it overloads default behaviour
if (isset($_GET['sort_by']))
{
  if (!isset($sort_by{ $_GET['sort_by'] }))
  {
    die('Hacking attempt on "sort_by" GET parameter');
  }
  else
  {
    $page['sort_by'] = $_GET['sort_by'];
  }
}

// order to sort
//
$page['sort_order'] = $sort_order['descending'];
// if the form was submitted, it overloads default behaviour
if (isset($_GET['sort_order']))
{
  if (!isset($sort_order{ $_GET['sort_order'] }))
  {
    die('Hacking attempt on "sort_order" GET parameter');
  }
  else
  {
    $page['sort_order'] = $sort_order[$_GET['sort_order']];
  }
}

// number of items to display
//
$page['items_number'] = 5;
if (isset($_GET['items_number']))
{
  if (!in_array($_GET['items_number'], $items_number))
  {
    die('Hacking attempt on "items_number" GET parameter');
  }
  else
  {
    $page['items_number'] = $_GET['items_number'];
  }
}

// which category to filter on ?
$page['cat_clause'] = '1=1';
if (isset($_GET['cat']))
{
  if (''.intval($_GET['cat']) != ''.$_GET['cat'])
  {
    die('Hacking attempt on "cat" GET parameter');
  }
  else if (0 != $_GET['cat'])
  {
    $page['cat_clause'] =
      'category_id IN ('.
      implode(
        ',',
        get_subcat_ids(array($_GET['cat']))
        ).
      ')'
      ;
  }
}

// search a particular author
$page['author_clause'] = '1=1';
if (isset($_GET['author']) and !empty($_GET['author']))
{
  if (function_exists('mysql_real_escape_string'))
  {
    $author = mysql_real_escape_string($_GET['author']);
  }
  else
  {
    $author = mysql_escape_string($_GET['author']);
  }

  $page['author_clause'] = 'author = \''.$author.'\'';
}

// search a substring among comments content
$page['keyword_clause'] = '1=1';
if (isset($_GET['keyword']) and !empty($_GET['keyword']))
{
  if (function_exists('mysql_real_escape_string'))
  {
    $keyword = mysql_real_escape_string($_GET['keyword']);
  }
  else
  {
    $keyword = mysql_escape_string($_GET['keyword']);
  }
  $page['keyword_clause'] =
    '('.
    implode(
      ' AND ',
      array_map(
        create_function(
          '$s',
          'return "content LIKE \'%$s%\'";'
          ),
        preg_split('/[\s,;]+/', $keyword)
        )
      ).
    ')'
    ;
}

// +-----------------------------------------------------------------------+
// |                         comments management                           |
// +-----------------------------------------------------------------------+
// comments deletion
if (isset($_POST['delete']) and count($_POST['comment_id']) > 0)
{
  $query = '
DELETE FROM '.COMMENTS_TABLE.'
  WHERE id IN ('.implode(',', $_POST['comment_id']).')
;';
  pwg_query($query);
}
// comments validation
if (isset($_POST['validate']) and count($_POST['comment_id']) > 0)
{
  $query = '
UPDATE '.COMMENTS_TABLE.'
  SET validated = \'true\'
    , validation_date = NOW()
  WHERE id IN ('.implode(',', $_POST['comment_id']).')
;';
  pwg_query($query);
}
// +-----------------------------------------------------------------------+
// |                       page header and options                         |
// +-----------------------------------------------------------------------+

$title= l10n('title_comments');
$page['body_id'] = 'theCommentsPage';
include(PHPWG_ROOT_PATH.'include/page_header.php');

$template->set_filenames(array('comments'=>'comments.tpl'));
$template->assign_vars(
  array(
    'L_COMMENT_TITLE' => $title,

    'F_ACTION'=>PHPWG_ROOT_PATH.'comments.php',
    'F_KEYWORD'=>@$_GET['keyword'],
    'F_AUTHOR'=>@$_GET['author'],
    
    'U_HOME' => PHPWG_ROOT_PATH.'category.php'
    )
  );

// +-----------------------------------------------------------------------+
// |                          form construction                            |
// +-----------------------------------------------------------------------+

// Search in a particular category
$blockname = 'category';

$template->assign_block_vars(
  $blockname,
  array('SELECTED' => '',
        'VALUE'=> 0,
        'OPTION' => '------------'
    ));

$query = '
SELECT id,name,uppercats,global_rank
  FROM '.CATEGORIES_TABLE;
if ($user['forbidden_categories'] != '')
{
  $query.= '
    WHERE id NOT IN ('.$user['forbidden_categories'].')';
}
$query.= '
;';
display_select_cat_wrapper($query, array(@$_GET['cat']), $blockname, true);

// Filter on recent comments...
$blockname = 'since_option';

foreach ($since_options as $id => $option)
{
  $selected = ($id == $page['since']) ? 'selected="selected"' : '';
  
  $template->assign_block_vars(
    $blockname,
    array('SELECTED' => $selected,
          'VALUE'=> $id,
          'CONTENT' => $option['label']
      ));
}

// Sort by
$blockname = 'sort_by_option';

foreach ($sort_by as $key => $value)
{
  $selected = ($key == $page['sort_by']) ? 'selected="selected"' : '';

  $template->assign_block_vars(
    $blockname,
    array('SELECTED' => $selected,
          'VALUE'=> $key,
          'CONTENT' => l10n($value)
      ));
}

// Sorting order
$blockname = 'sort_order_option';

foreach (array_keys($sort_order) as $option)
{
  $selected = ($option == $page['sort_order']) ? 'selected="selected"' : '';

  $template->assign_block_vars(
    $blockname,
    array('SELECTED' => $selected,
          'VALUE'=> $option,
          'CONTENT' => l10n($option)
      ));
}

// Number of items
$blockname = 'items_number_option';

foreach ($items_number as $option)
{
  $selected = ($option == $page['items_number']) ? 'selected="selected"' : '';

  $template->assign_block_vars(
    $blockname,
    array('SELECTED' => $selected,
          'VALUE'=> $option,
          'CONTENT' => is_numeric($option) ? $option : l10n($option)
      ));
}

// +-----------------------------------------------------------------------+
// |                            navigation bar                             |
// +-----------------------------------------------------------------------+

if (isset($_GET['start']) and is_numeric($_GET['start']))
{
  $start = $_GET['start'];
}
else
{
  $start = 0;
}

$query = '
SELECT COUNT(DISTINCT(id))
  FROM '.IMAGE_CATEGORY_TABLE.' AS ic
    INNER JOIN '.COMMENTS_TABLE.' AS com
    ON ic.image_id = com.image_id
  WHERE validated = \'true\'
    AND '.$since_options[$page['since']]['clause'].'
    AND '.$page['cat_clause'].'
    AND '.$page['author_clause'].'
    AND '.$page['keyword_clause'];
if ($user['forbidden_categories'] != '')
{
  $query.= '
    AND category_id NOT IN ('.$user['forbidden_categories'].')';
}
$query.= '
;';
list($counter) = mysql_fetch_row(pwg_query($query));

$url = PHPWG_ROOT_PATH.'comments.php?t=1'.get_query_string_diff(array('start'));

$navbar = create_navigation_bar($url,
                                $counter,
                                $start,
                                $page['items_number'],
                                '');

$template->assign_vars(array('NAVBAR' => $navbar));

// +-----------------------------------------------------------------------+
// |                        last comments display                          |
// +-----------------------------------------------------------------------+

$comments = array();
$element_ids = array();
$category_ids = array();

$query = '
SELECT com.id AS comment_id
     , com.image_id
     , ic.category_id
     , com.author
     , com.date
     , com.content
     , com.id AS comment_id
  FROM '.IMAGE_CATEGORY_TABLE.' AS ic
    INNER JOIN '.COMMENTS_TABLE.' AS com
    ON ic.image_id = com.image_id
  WHERE validated = \'true\'
    AND '.$since_options[$page['since']]['clause'].'
    AND '.$page['cat_clause'].'
    AND '.$page['author_clause'].'
    AND '.$page['keyword_clause'];
if ($user['forbidden_categories'] != '')
{
  $query.= '
    AND category_id NOT IN ('.$user['forbidden_categories'].')';
}
$query.= '
  GROUP BY comment_id
  ORDER BY '.$page['sort_by'].' '.$page['sort_order'];
if ('all' != $page['items_number'])
{
  $query.= '
  LIMIT '.$start.','.$page['items_number'];
}
$query.= '
;';
$result = pwg_query($query);
while ($row = mysql_fetch_array($result))
{
  array_push($comments, $row);
  array_push($element_ids, $row['image_id']);
  array_push($category_ids, $row['category_id']);
}

if (count($comments) > 0)
{
  // retrieving element informations
  $elements = array();
  $query = '
SELECT id, name, file, path, tn_ext
  FROM '.IMAGES_TABLE.'
  WHERE id IN ('.implode(',', $element_ids).')
;';
  $result = pwg_query($query);
  while ($row = mysql_fetch_array($result))
  {
    $elements[$row['id']] = $row;
  }

  // retrieving category informations
  $categories = array();
  $query = '
SELECT id, uppercats
  FROM '.CATEGORIES_TABLE.'
  WHERE id IN ('.implode(',', $category_ids).')
;';
  $result = pwg_query($query);
  while ($row = mysql_fetch_array($result))
  {
    $categories[$row['id']] = $row;
  }

  foreach ($comments as $comment)
  {
    // name of the picture
    $name = get_cat_display_name_cache(
      $categories[$comment['category_id']]['uppercats'], '', false);
    $name.= $conf['level_separator'];
    if (!empty($elements[$comment['image_id']]['name']))
    {
      $name.= $elements[$comment['image_id']]['name'];
    }
    else
    {
      $name.= get_name_from_file($elements[$comment['image_id']]['file']);
    }
    
    // source of the thumbnail picture
    $thumbnail_src = get_thumbnail_src(
      $elements[$comment['image_id']]['path'],
      @$elements[$comment['image_id']]['tn_ext']
      );
  
    // link to the full size picture
    $url = PHPWG_ROOT_PATH.'picture.php?cat='.$comment['category_id'];
    $url.= '&amp;image_id='.$comment['image_id'];
    
    $template->assign_block_vars(
      'picture',
      array(
        'TITLE_IMG'=>$name,
        'I_THUMB'=>$thumbnail_src,
        'U_THUMB'=>$url
        ));
    
    $author = $comment['author'];
    if (empty($comment['author']))
    {
      $author = l10n('guest');
    }
    
    $template->assign_block_vars(
      'comment',
      array(
        'U_PICTURE' => $url,
        'TN_SRC' => $thumbnail_src,
        'AUTHOR' => $author,
        'DATE'=>format_date($comment['date'],'mysql_datetime',true),
        'CONTENT'=>parse_comment_content($comment['content']),
        ));
  }
}
// +-----------------------------------------------------------------------+
// |                           html code display                           |
// +-----------------------------------------------------------------------+
if (defined('IN_ADMIN'))
{
  $template->assign_var_from_handle('ADMIN_CONTENT', 'comments');
}
else
{
  $template->assign_block_vars('title',array());
  $template->parse('comments');
  include(PHPWG_ROOT_PATH.'include/page_tail.php');
}
?>