<?php
/***********************************************************************

  Copyright (C) 2002-2008  PunBB

  This file is part of PunBB.

  PunBB 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; either version 2 of the License,
  or (at your option) any later version.

  PunBB 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

************************************************************************/


// Tell header.php to use the admin template
define('PUN_ADMIN_CONSOLE', 1);

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


if ($pun_user['g_id'] > PUN_ADMIN)
	message($lang_common['No permission']);


if (isset($_GET['action']) || isset($_POST['prune']) || isset($_POST['prune_comply']))
{
	if (isset($_POST['prune_comply']))
	{
		confirm_referrer('admin_prune.php');

		$prune_from = $_POST['prune_from'];
		$prune_sticky = isset($_POST['prune_sticky']) ? '1' : '0';
		$prune_days = intval($_POST['prune_days']);
		$prune_date = ($prune_days) ? time() - ($prune_days*86400) : -1;

		@set_time_limit(0);

		if ($prune_from == 'all')
		{
			$result = $db->query('SELECT id FROM '.$db->prefix.'forums') or error('Unable to fetch forum list', __FILE__, __LINE__, $db->error());
			$num_forums = $db->num_rows($result);

			for ($i = 0; $i < $num_forums; ++$i)
			{
				$fid = $db->result($result, $i);

				prune($fid, $prune_sticky, $prune_date);
				update_forum($fid);
			}
		}
		else
		{
			$prune_from = intval($prune_from);
			prune($prune_from, $prune_sticky, $prune_date);
			update_forum($prune_from);
		}

		// Locate any "orphaned redirect topics" and delete them
		$result = $db->query('SELECT t1.id FROM '.$db->prefix.'topics AS t1 LEFT JOIN '.$db->prefix.'topics AS t2 ON t1.moved_to=t2.id WHERE t2.id IS NULL AND t1.moved_to IS NOT NULL') or error('Unable to fetch redirect topics', __FILE__, __LINE__, $db->error());
		$num_orphans = $db->num_rows($result);

		if ($num_orphans)
		{
			for ($i = 0; $i < $num_orphans; ++$i)
				$orphans[] = $db->result($result, $i);

			$db->query('DELETE FROM '.$db->prefix.'topics WHERE id IN('.implode(',', $orphans).')') or error('Unable to delete redirect topics', __FILE__, __LINE__, $db->error());
		}

		redirect('admin_prune.php', 'Posts pruned. Redirecting &hellip;');
	}


	$prune_days = $_POST['req_prune_days'];
	if (!@preg_match('#^\d+$#', $prune_days))
		message('Days to prune must be a positive integer.');

	$prune_date = time() - ($prune_days*86400);
	$prune_from = $_POST['prune_from'];

	// Concatenate together the query for counting number or topics to prune
	$sql = 'SELECT COUNT(id) FROM '.$db->prefix.'topics WHERE last_post<'.$prune_date.' AND moved_to IS NULL';

	if (!$prune_sticky)
		$sql .= ' AND sticky=\'0\'';

	if ($prune_from != 'all')
	{
		$prune_from = intval($prune_from);
		$sql .= ' AND forum_id='.$prune_from;

		// Fetch the forum name (just for cosmetic reasons)
		$result = $db->query('SELECT forum_name FROM '.$db->prefix.'forums WHERE id='.$prune_from) or error('Unable to fetch forum name', __FILE__, __LINE__, $db->error());
		$forum = '"'.pun_htmlspecialchars($db->result($result)).'"';
	}
	else
		$forum = 'all forums';

	$result = $db->query($sql) or error('Unable to fetch topic prune count', __FILE__, __LINE__, $db->error());
	$num_topics = $db->result($result);

	if (!$num_topics)
		message('There are no topics that are '.$prune_days.' days old. Please decrease the value of "Days old" and try again.');


	$page_title = pun_htmlspecialchars($pun_config['o_board_title']).' / Admin / Prune';
	require PUN_ROOT.'header.php';

	generate_admin_menu('prune');

?>
	<div class="blockform">
		<h2><span>Prune</span></h2>
		<div class="box">
			<form method="post" action="admin_prune.php?action=foo">
				<div class="inform">
					<input type="hidden" name="prune_days" value="<?php echo $prune_days ?>" />
					<input type="hidden" name="prune_sticky" value="<?php echo $prune_sticky ?>" />
					<input type="hidden" name="prune_from" value="<?php echo $prune_from ?>" />
					<fieldset>
						<legend>Confirm prune posts</legend>
						<div class="infldset">
							<p>Are you sure that you want to prune all topics older than <?php echo $prune_days ?> days from <?php echo $forum ?>? (<?php echo $num_topics ?> topics)</p>
							<p>WARNING! Pruning posts deletes them permanently.</p>
						</div>
					</fieldset>
				</div>
				<p><input type="submit" name="prune_comply" value="Prune" /><a href="javascript:history.go(-1)">Go back</a></p>
			</form>
		</div>
	</div>
	<div class="clearer"></div>
</div>
<?php

	require PUN_ROOT.'footer.php';
}


else
{
	$page_title = pun_htmlspecialchars($pun_config['o_board_title']).' / Admin / Prune';
	$required_fields = array('req_prune_days' => 'Days old');
	$focus_element = array('prune', 'req_prune_days');
	require PUN_ROOT.'header.php';

	generate_admin_menu('prune');

?>
	<div class="blockform">
		<h2><span>Prune</span></h2>
		<div class="box">
			<form id="prune" method="post" action="admin_prune.php?action=foo" onsubmit="return process_form(this)">
				<div class="inform">
				<input type="hidden" name="form_sent" value="1" />
					<fieldset>
						<legend>Prune old posts</legend>
						<div class="infldset">
							<table class="aligntop" cellspacing="0">
								<tr>
									<th scope="row">Days old</th>
									<td>
										<input type="text" name="req_prune_days" size="3" maxlength="3" tabindex="1" />
										<span>The number of days "old" a topic must be to be pruned. E.g. if you were to enter 30, every topic that didn't contain a post dated less than 30 days old would be deleted.</span>
									</td>
								</tr>
								<tr>
									<th scope="row">Prune sticky topics</th>
									<td>
										<input type="radio" name="prune_sticky" value="1" tabindex="2" checked="checked" />&nbsp;<strong>Yes</strong>&nbsp;&nbsp;&nbsp;<input type="radio" name="prune_sticky" value="0" />&nbsp;<strong>No</strong>
										<span>When enabled sticky topics will also be pruned.</span>
									</td>
								</tr>
								<tr>
									<th scope="row">Prune from forum</th>
									<td>
										<select name="prune_from" tabindex="3">
											<option value="all">All forums</option>
<?php

	$result = $db->query('SELECT c.id AS cid, c.cat_name, f.id AS fid, f.forum_name FROM '.$db->prefix.'categories AS c INNER JOIN '.$db->prefix.'forums AS f ON c.id=f.cat_id WHERE f.redirect_url IS NULL ORDER BY c.disp_position, c.id, f.disp_position') or error('Unable to fetch category/forum list', __FILE__, __LINE__, $db->error());

	$cur_category = 0;
	while ($forum = $db->fetch_assoc($result))
	{
		if ($forum['cid'] != $cur_category)	// Are we still in the same category?
		{
			if ($cur_category)
				echo "\t\t\t\t\t\t\t\t\t\t\t".'</optgroup>'."\n";

			echo "\t\t\t\t\t\t\t\t\t\t\t".'<optgroup label="'.pun_htmlspecialchars($forum['cat_name']).'">'."\n";
			$cur_category = $forum['cid'];
		}

		echo "\t\t\t\t\t\t\t\t\t\t\t\t".'<option value="'.$forum['fid'].'">'.pun_htmlspecialchars($forum['forum_name']).'</option>'."\n";
	}

?>
											</optgroup>
										</select>
										<span>The forum from which you want to prune posts.</span>
									</td>
								</tr>
							</table>
							<p class="topspace">Use this feature with caution. Pruned posts can <strong>never</strong> be recovered. For best performance you should put the forum in maintenance mode during pruning.</p>
							<div class="fsetsubmit"><input type="submit" name="prune" value="Prune" tabindex="5" /></div>
						</div>
					</fieldset>
				</div>
			</form>
		</div>
	</div>
	<div class="clearer"></div>
</div>
<?php

	require PUN_ROOT.'footer.php';
}