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##############################################################
## Mod Title:   shows topic of last made post on index
## Mod Version: 1.4.0
## Author:      e-sven <sven@e-sven.net> http://www.e-sven.net
## Description: -adds lasts post topic to each forum on
##               the index page (based on read-access)
##		-word censorship is used
##		-topic title with more then 27 chars are cut off
##		-mouseover info displays the full title
##
## Installation Level:  easy
## Installation Time:   2-5 Minutes
## Files To Edit:       index.php
## Included Files:      index.php (pre-modded)
##############################################################
## History:
##         0.9 not released beta
##         1.0 first working release
##         1.1 optimized db access
##	   1.2 made implementation easier 
##	       (only two replaces have to be made)
##         1.2a just a minor bug (thanks to Acid)
##         1.3 empty forums where not displayed correctly
##         1.4 optimized db-query
############################################################## 
## Before Adding This MOD To Your Forum, 
## You Should Back Up All Files Related To This MOD
##############################################################

#
#-----[ OPEN ]------------------------------------------------
#
index.php

#
#-----[ ACTION Find ]-----------------------------------------
#
default:
	$sql = "SELECT f.*, p.post_time, p.post_username, u.username, u.user_id
	.
	.
	.
	//
	//
	// Obtain a list of topic ids which contain

#
#-----[ REPLACE WITH ]----------------------------------------
#
default:
 		$sql = "SELECT f.*, p.post_time, p.post_username, u.username, u.user_id, t.topic_title, t.topic_last_post_id " .
			" FROM ((( " . FORUMS_TABLE . " f " .
			" LEFT JOIN " . POSTS_TABLE . " p ON p.post_id = f.forum_last_post_id )" .
			" LEFT JOIN " . USERS_TABLE . " u ON u.user_id = p.poster_id ) " .
			" LEFT JOIN " . TOPICS_TABLE . " t ON t.topic_last_post_id = p.post_id ) " .
			" ORDER BY f.cat_id, f.forum_order";
		break;
	}
	if ( !($result = $db->sql_query($sql)) )
	{
		message_die(GENERAL_ERROR, 'Could not query forums information', '', __LINE__, __FILE__, $sql);
	}

	$forum_data = array();
	$topic_last_ary = array();
	$i=0;
	while( $row = $db->sql_fetchrow($result) )
	{
		if (!in_array($row['topic_last_post_id'], $topic_last_ary) || $row['topic_last_post_id']==0) {
			$topic_last_ary[i]=$row['topic_last_post_id'];
			$i++;
			$forum_data[] = $row;
		}
	}
	unset($topic_last_ary);
	if ( !($total_forums = count($forum_data)) )
	{
		message_die(GENERAL_MESSAGE, $lang['No_forums']);
	}
	
	//
	// Filter topic_title not allowed to read
	// 
	if ( !($userdata['user_level'] == ADMIN && $userdata['session_logged_in']) ) {
		$auth_read_all = array();
		$auth_read_all=auth(AUTH_READ, AUTH_LIST_ALL, $userdata, $forum_data);
		$auth_data = '';
		for($i=0; $i<count($forum_data); $i++)
		{
			if (!$auth_read_all[$forum_data[$i]['forum_id']]['auth_read']) {
				$forum_data[$i]['topic_title']='';
			}
		}
	}

	//
	// Define censored word matches
	//
	$orig_word = array();
	$replacement_word = array();
	obtain_word_list($orig_word, $replacement_word);

	//
	// Obtain a list of topic ids which contain

#
#-----[ ACTION Find ]-----------------------------------------
#
	if ( $forum_data[$j]['forum_last_post_id'] )
	{
	...
	}

#
#-----[ ACTION Replace With ]---------------------------------
#
	if ( $forum_data[$j]['forum_last_post_id'] )
	{
		$topic_title = $forum_data[$j]['topic_title'];
		$topic_title2 = $forum_data[$j]['topic_title'];
		
		//
		// Censor topic title
		//
		if ( count($orig_word) )
		{
			$topic_title = preg_replace($orig_word, $replacement_word, $topic_title);
			$topic_title2 = preg_replace($orig_word, $replacement_word, $topic_title2);
		}
										
		if (strlen($topic_title)>27) {
			$topic_title = substr($topic_title,0,24) . '...';
		}

		$last_post_time = create_date($board_config['default_dateformat'], $forum_data[$j]['post_time'], $board_config['board_timezone']);
		$last_post = '<a href="' . append_sid("viewtopic.$phpEx?"  . POST_POST_URL . '=' . $forum_data[$j]['forum_last_post_id']) . '#' . $forum_data[$j]['forum_last_post_id'] . '" title="' . $topic_title2 . '">' . $topic_title . '</a><br>';
		$last_post .= $last_post_time . '&nbsp;<a href="' . append_sid("viewtopic.$phpEx?"  . POST_POST_URL . '=' . $forum_data[$j]['forum_last_post_id']) . '#' . $forum_data[$j]['forum_last_post_id'] . '"><img src="' . $images['icon_latest_reply'] . '" border="0" alt="' . $lang['View_latest_post'] . '" title="' . $lang['View_latest_post'] . '"></a><br>' . $lang['by'] . '&nbsp;';
		$last_post .= ( $forum_data[$j]['user_id'] == ANONYMOUS ) ? ( ($forum_data[$j]['post_username'] != '' ) ? $forum_data[$j]['post_username'] . ' ' : $lang['Guest'] . ' ' ) : '<a href="' . append_sid("profile.$phpEx?mode=viewprofile&" . POST_USERS_URL . '='  . $forum_data[$j]['user_id']) . '">' . $forum_data[$j]['username'] . '</a> ';
	}
#
#-----[ SAVE/CLOSE ALL FILES ]----------------------------------
#