<?php

/**
 * Copyright (C) 2008-2012 FluxBB
 * based on code by Rickard Andersson copyright (C) 2002-2008 PunBB
 * License: http://www.gnu.org/licenses/gpl.html GPL version 2 or higher
 */

define('PUN_ROOT', dirname(__FILE__).'/');
require PUN_ROOT.'include/common.php';


if ($pun_user['g_read_board'] == '0')
	message($lang_common['No view'], false, '403 Forbidden');


$id = isset($_GET['id']) ? intval($_GET['id']) : 0;
if ($id < 1)
	message($lang_common['Bad request'], false, '404 Not Found');

// Load the viewforum.php language file
require PUN_ROOT.'lang/'.$pun_user['language'].'/forum.php';

// Fetch some info about the forum
if (!$pun_user['is_guest'])
	$result = $db->query('SELECT f.forum_name, f.redirect_url, f.moderators, f.num_topics, f.sort_by, fp.post_topics, s.user_id AS is_subscribed FROM '.$db->prefix.'forums AS f LEFT JOIN '.$db->prefix.'forum_subscriptions AS s ON (f.id=s.forum_id AND s.user_id='.$pun_user['id'].') LEFT JOIN '.$db->prefix.'forum_perms AS fp ON (fp.forum_id=f.id AND fp.group_id='.$pun_user['g_id'].') WHERE (fp.read_forum IS NULL OR fp.read_forum=1) AND f.id='.$id) or error('Unable to fetch forum info', __FILE__, __LINE__, $db->error());
else
	$result = $db->query('SELECT f.forum_name, f.redirect_url, f.moderators, f.num_topics, f.sort_by, fp.post_topics, 0 AS is_subscribed FROM '.$db->prefix.'forums AS f LEFT JOIN '.$db->prefix.'forum_perms AS fp ON (fp.forum_id=f.id AND fp.group_id='.$pun_user['g_id'].') WHERE (fp.read_forum IS NULL OR fp.read_forum=1) AND f.id='.$id) or error('Unable to fetch forum info', __FILE__, __LINE__, $db->error());

if (!$db->num_rows($result))
	message($lang_common['Bad request'], false, '404 Not Found');

$cur_forum = $db->fetch_assoc($result);

// Is this a redirect forum? In that case, redirect!
if ($cur_forum['redirect_url'] != '')
{
	header('Location: '.$cur_forum['redirect_url']);
	exit;
}

// Sort out who the moderators are and if we are currently a moderator (or an admin)
$mods_array = ($cur_forum['moderators'] != '') ? unserialize($cur_forum['moderators']) : array();
$is_admmod = ($pun_user['g_id'] == PUN_ADMIN || ($pun_user['g_moderator'] == '1' && array_key_exists($pun_user['username'], $mods_array))) ? true : false;

if (!$is_admmod) {
	if ($id==BATW_FORUM) { redirect('batw.php', $lang_post['Post redirect']); }
}

switch ($cur_forum['sort_by'])
{
	case 0:
		$sort_by = 'last_post DESC';
		break;
	case 1:
		$sort_by = 'posted DESC';
		break;
	case 2:
		$sort_by = 'subject ASC';
		break;
	default:
		$sort_by = 'last_post DESC';
		break;
}

// Can we or can we not post new topics?
if (($cur_forum['post_topics'] == '' && $pun_user['g_post_topics'] == '1') || $cur_forum['post_topics'] == '1' || $is_admmod)
	$post_link = "\t\t\t".'<p class="postlink conr"><a href="post.php?fid='.$id.'">'.$lang_forum['Post topic'].'</a></p>'."\n";
else
	$post_link = '';

// Get topic/forum tracking data
if (!$pun_user['is_guest'])
	$tracked_topics = get_tracked_topics();

// Determine the topic offset (based on $_GET['p'])
$num_pages = ceil($cur_forum['num_topics'] / $pun_user['disp_topics']);

$p = (!isset($_GET['p']) || $_GET['p'] <= 1 || $_GET['p'] > $num_pages) ? 1 : intval($_GET['p']);
$start_from = $pun_user['disp_topics'] * ($p - 1);

// Generate paging links
$paging_links = '<span class="pages-label">'.$lang_common['Pages'].' </span>'.paginate($num_pages, $p, 'viewforum.php?id='.$id);

// Add relationship meta tags
$page_head = array();
$page_head['canonical'] = '<link rel="canonical" href="viewforum.php?id='.$id.($p == 1 ? '' : '&amp;p='.$p).'" title="'.sprintf($lang_common['Page'], $p).'" />';

if ($num_pages > 1)
{
	if ($p > 1)
		$page_head['prev'] = '<link rel="prev" href="viewforum.php?id='.$id.($p == 2 ? '' : '&amp;p='.($p - 1)).'" title="'.sprintf($lang_common['Page'], $p - 1).'" />';
	if ($p < $num_pages)
		$page_head['next'] = '<link rel="next" href="viewforum.php?id='.$id.'&amp;p='.($p + 1).'" title="'.sprintf($lang_common['Page'], $p + 1).'" />';
}

if ($pun_config['o_feed_type'] == '1')
	$page_head['feed'] = '<link rel="alternate" type="application/rss+xml" href="extern.php?action=feed&amp;fid='.$id.'&amp;type=rss" title="'.$lang_common['RSS forum feed'].'" />';
else if ($pun_config['o_feed_type'] == '2')
	$page_head['feed'] = '<link rel="alternate" type="application/atom+xml" href="extern.php?action=feed&amp;fid='.$id.'&amp;type=atom" title="'.$lang_common['Atom forum feed'].'" />';

$forum_actions = array();

if (!$pun_user['is_guest'])
{
	$token_url = '&amp;csrf_token='.pun_csrf_token();

	if ($pun_config['o_forum_subscriptions'] == '1')
	{
		if ($cur_forum['is_subscribed'])
			$forum_actions[] = '<span>'.$lang_forum['Is subscribed'].' - </span><a id="unsubscribe" href="misc.php?action=unsubscribe&amp;fid='.$id.$token_url.'">'.$lang_forum['Unsubscribe'].'</a>';
		else
			$forum_actions[] = '<a href="misc.php?action=subscribe&amp;fid='.$id.$token_url.'">'.$lang_forum['Subscribe'].'</a>';
	}
//DHC: don't show 'mark as read'
//	$forum_actions[] = '<a href="misc.php?action=markforumread&amp;fid='.$id.$token_url.'">'.$lang_common['Mark forum read'].'</a>';
}

$page_title = array(pun_htmlspecialchars($pun_config['o_board_title']), pun_htmlspecialchars($cur_forum['forum_name']));
define('PUN_ALLOW_INDEX', 1);
define('PUN_ACTIVE_PAGE', 'index');
require PUN_ROOT.'header.php';
echo '<div id="left_posts">';

//DHC: remove crumbs (class="linkst") -- recentsDiv adds crumbs
//DHC: remove standard forum view table

$recents_div = recentsDiv('viewforum',$id);	// may die on bad input (post_count)

$quickpost = false;
if ($pun_config['o_quickpost'] == '1' && !$pun_user['is_guest']) { $quickpost = true; }
if (!$quickpost) {
	echo must_login_div();
} else {
	echo <<<FORUM_POST
			<div id="cz_qpost_div">
				<span id="cz_quickpost"><a href="post.php?fid=$id">{$lang_cz['Share thoughts']} <span>({$lang_cz['new topic']})</span></a></span>
			</div>
FORUM_POST;
}

echo $recents_div;
echo '</div>';// id="left_posts">
echo '<div id="right_menu">';
qJumpMenu();
echo '</div>';// id="right_menu">

$forum_id = $id;
$footer_style = 'viewforum';
require PUN_ROOT.'footer.php';
