<?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');


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

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


// If a post ID is specified we determine topic ID and page number so we can redirect to the correct message
if ($pid)
{
	$result = $db->query('SELECT topic_id, posted FROM '.$db->prefix.'posts WHERE id='.$pid) or error('Unable to fetch topic ID', __FILE__, __LINE__, $db->error());
	if (!$db->num_rows($result))
		message($lang_common['Bad request'], false, '404 Not Found');

	list($id, $posted) = $db->fetch_row($result);

	// Determine on which page the post is located (depending on $forum_user['disp_posts'])
	$result = $db->query('SELECT COUNT(id) FROM '.$db->prefix.'posts WHERE topic_id='.$id.' AND posted<'.$posted) or error('Unable to count previous posts', __FILE__, __LINE__, $db->error());
	$num_posts = $db->result($result) + 1;

	$_GET['p'] = ceil($num_posts / $pun_user['disp_posts']);
}
else
{
	// If action=new, we redirect to the first new post (if any)
	if ($action == 'new')
	{
		if (!$pun_user['is_guest'])
		{
			// We need to check if this topic has been viewed recently by the user
			$tracked_topics = get_tracked_topics();
			$last_viewed = isset($tracked_topics['topics'][$id]) ? $tracked_topics['topics'][$id] : $pun_user['last_visit'];

			$result = $db->query('SELECT MIN(id) FROM '.$db->prefix.'posts WHERE topic_id='.$id.' AND posted>'.$last_viewed) or error('Unable to fetch first new post info', __FILE__, __LINE__, $db->error());
			$first_new_post_id = $db->result($result);

			if ($first_new_post_id)
			{
				header('Location: viewtopic.php?pid='.$first_new_post_id.'#p'.$first_new_post_id);
				exit;
			}
		}

		// If there is no new post, we go to the last post
		$action = 'last';
	}

	// If action=last, we redirect to the last post
	if ($action == 'last')
	{
		$result = $db->query('SELECT MAX(id) FROM '.$db->prefix.'posts WHERE topic_id='.$id) or error('Unable to fetch last post info', __FILE__, __LINE__, $db->error());
		$last_post_id = $db->result($result);

		if ($last_post_id)
		{
			header('Location: viewtopic.php?pid='.$last_post_id.'#p'.$last_post_id);
			exit;
		}
	}
}

// Fetch some info about the topic
if (!$pun_user['is_guest'])
	$result = $db->query('SELECT t.subject, t.closed, t.num_replies, t.sticky, t.first_post_id, f.id AS forum_id, f.forum_name, f.moderators, fp.post_replies, s.user_id AS is_subscribed FROM '.$db->prefix.'topics AS t INNER JOIN '.$db->prefix.'forums AS f ON f.id=t.forum_id LEFT JOIN '.$db->prefix.'topic_subscriptions AS s ON (t.id=s.topic_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='.$pun_user['g_id'].') WHERE (fp.read_forum IS NULL OR fp.read_forum=1) AND t.id='.$id.' AND t.moved_to IS NULL') or error('Unable to fetch topic info', __FILE__, __LINE__, $db->error());
else
	$result = $db->query('SELECT t.subject, t.closed, t.num_replies, t.sticky, t.first_post_id, f.id AS forum_id, f.forum_name, f.moderators, fp.post_replies, 0 AS is_subscribed FROM '.$db->prefix.'topics AS t INNER JOIN '.$db->prefix.'forums AS f ON f.id=t.forum_id LEFT JOIN '.$db->prefix.'forum_perms AS fp ON (fp.forum_id=f.id AND fp.group_id='.$pun_user['g_id'].') WHERE (fp.read_forum IS NULL OR fp.read_forum=1) AND t.id='.$id.' AND t.moved_to IS NULL') or error('Unable to fetch topic info', __FILE__, __LINE__, $db->error());

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

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

// Sort out who the moderators are and if we are currently a moderator (or an admin)
$mods_array = ($cur_topic['moderators'] != '') ? unserialize($cur_topic['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)
	$admin_ids = get_admin_ids();

// Can we or can we not post replies?
if ($cur_topic['closed'] == '0')
{
	if (($cur_topic['post_replies'] == '' && $pun_user['g_post_replies'] == '1') || $cur_topic['post_replies'] == '1' || $is_admmod)
		$post_link = "\t\t\t".'<p class="postlink conr"><a href="post.php?tid='.$id.'">'.$lang_topic['Post reply'].'</a></p>'."\n";
	else
		$post_link = '';
}
else
{
	$post_link = $lang_topic['Topic closed'];

	if ($is_admmod)
		$post_link .= ' / <a href="post.php?tid='.$id.'">'.$lang_topic['Post reply'].'</a>';

	$post_link = "\t\t\t".'<p class="postlink conr">'.$post_link.'</p>'."\n";
}


// Add/update this topic in our list of tracked topics
if (!$pun_user['is_guest'])
{
	$tracked_topics = get_tracked_topics();
	$tracked_topics['topics'][$id] = time();
	set_tracked_topics($tracked_topics);
}


// Determine the post offset (based on $_GET['p'])
$num_pages = ceil(($cur_topic['num_replies'] + 1) / $pun_user['disp_posts']);

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

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


if ($pun_config['o_censoring'] == '1')
	$cur_topic['subject'] = censor_words($cur_topic['subject']);


$quickpost = false;
if ($pun_config['o_quickpost'] == '1' &&
	($cur_topic['post_replies'] == '1' || ($cur_topic['post_replies'] == '' && $pun_user['g_post_replies'] == '1')) &&
	($cur_topic['closed'] == '0' || $is_admmod))
{
	// Load the post.php language file
	require PUN_ROOT.'lang/'.$pun_user['language'].'/post.php';

	$required_fields = array('req_message' => $lang_common['Message']);
	if ($pun_user['is_guest'])
	{
		$required_fields['req_username'] = $lang_post['Guest name'];
		if ($pun_config['p_force_guest_email'] == '1')
			$required_fields['req_email'] = $lang_common['Email'];
	}
	$quickpost = true;
}

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

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

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

define('PUN_ALLOW_INDEX', 1);

//BATW: check for batw topic
if ($cur_topic['forum_id']==BATW_FORUM) {
	$page_title = 'Bonds Across the Water Forum';
	define('PUN_ACTIVE_PAGE', 'batw');
} else {
	$page_title = array(pun_htmlspecialchars($pun_config['o_board_title']), pun_htmlspecialchars($cur_topic['forum_name']), pun_htmlspecialchars($cur_topic['subject']));
	define('PUN_ACTIVE_PAGE', 'index');
}
require PUN_ROOT.'header.php';

//DHC: remove crumbs (class="linkst") -- recentsDiv adds crumbs

require PUN_ROOT.'include/parser.php';

$post_count = 0; // Keep track of post numbers

// Retrieve a list of post IDs, LIMIT is (really) expensive so we only fetch the IDs here then later fetch the remaining data
$result = $db->query('SELECT id FROM '.$db->prefix.'posts WHERE topic_id='.$id.' ORDER BY id LIMIT '.$start_from.','.$pun_user['disp_posts']) or error('Unable to fetch post IDs', __FILE__, __LINE__, $db->error());

$post_ids = array();
for ($i = 0;$cur_post_id = $db->result($result, $i);$i++)
	$post_ids[] = $cur_post_id;

if (empty($post_ids))
	error('The post table and topic table seem to be out of sync!', __FILE__, __LINE__);

//DHC: remove standard topic view table

// Increment "num_views" for topic
if ($pun_config['o_topic_views'] == '1')
	$db->query('UPDATE '.$db->prefix.'topics SET num_views=num_views+1 WHERE id='.$id) or error('Unable to update topic', __FILE__, __LINE__, $db->error());

//DHC: set topic_id for use by footer
$topic_id = $id;

//DHC: simplified index: just "recent posts"

echo recentsDiv('viewtopic',$id);

// Display quick post if enabled
if ($quickpost)
{

$cur_index = 1;

?>
<div id="cz_qpost_div" class="blockform">
		<div class="cz_qpost_title"><?php echo $lang_cz['Post Reply'] ?></div>
		<form id="quickpostform" method="post" action="post.php?tid=<?php echo $id ?>" onsubmit="this.submit.disabled=true;if(process_form(this)){return true;}else{this.submit.disabled=false;return false;}">
			<div class="inform">
				<fieldset>
					<legend><?php echo $lang_common['Write message legend'] ?></legend>
					<div class="infldset">
						<input type="hidden" name="form_sent" value="1" />
<?php if ($pun_config['o_topic_subscriptions'] == '1' && ($pun_user['auto_notify'] == '1' || $cur_topic['is_subscribed'])): ?>						<input type="hidden" name="subscribe" value="1" />
<?php endif; ?>
<?php

if ($pun_user['is_guest'])
{
	$email_label = ($pun_config['p_force_guest_email'] == '1') ? '<strong>'.$lang_common['Email'].' <span>'.$lang_common['Required'].'</span></strong>' : $lang_common['Email'];
	$email_form_name = ($pun_config['p_force_guest_email'] == '1') ? 'req_email' : 'email';

?>
						<label class="conl required"><strong><?php echo $lang_post['Guest name'] ?> <span><?php echo $lang_common['Required'] ?></span></strong><br /><input type="text" name="req_username" size="25" maxlength="25" tabindex="<?php echo $cur_index++ ?>" /><br /></label>
						<label class="conl<?php echo ($pun_config['p_force_guest_email'] == '1') ? ' required' : '' ?>"><?php echo $email_label ?><br /><input type="text" name="<?php echo $email_form_name ?>" size="50" maxlength="80" tabindex="<?php echo $cur_index++ ?>" /><br /></label>
						<div class="clearer"></div>
<?php

//	echo "\t\t\t\t\t\t".'<label class="required"><strong>'.$lang_common['Message'].' <span>'.$lang_common['Required'].'</span></strong><br />';
}
//else
//	echo "\t\t\t\t\t\t".'<label>';

?>
						<textarea name="req_message" tabindex="<?php echo $cur_index++ ?>"></textarea>
<?php echo get_bblinks(); ?>
					</div>
				</fieldset>
			</div>
<?php flux_hook('quickpost_before_submit') ?>
			<p class="buttons"><input type="submit" name="submit" tabindex="<?php echo $cur_index++ ?>" value="<?php echo $lang_common['Submit'] ?>" accesskey="s" /> <a class="cz_btnBack" href="javascript:history.go(-1)"><?php echo $lang_common['Go back'] ?></a></p>
		</form>
</div>
<?php
//DHC: remove preview
//			<p class="buttons"><input type="submit" name="submit" tabindex="<¿php echo $cur_index++ ¿>" value="<¿php echo $lang_common['Submit'] ¿>" accesskey="s" /> <input type="submit" name="preview" value="<¿php echo $lang_topic['Preview'] ¿>" tabindex="<¿php echo $cur_index++ ¿>" accesskey="p" /></p>

}
else {
	echo must_login_div();
}

$forum_id = $cur_topic['forum_id'];
$footer_style = 'viewtopic';
require PUN_ROOT.'footer.php';