From fceea15317af1cb00044a927080e1c5def12304e Mon Sep 17 00:00:00 2001
From: 8chan <admin@8chan.co>
Date: Sat, 18 Oct 2014 13:21:08 -0700
Subject: [PATCH] Be smarter about rebuilds

---
 inc/functions.php       |  2 +-
 inc/instance-config.php | 19 ++++++++++++++-----
 2 files changed, 15 insertions(+), 6 deletions(-)

diff --git a/inc/functions.php b/inc/functions.php
index b61f5bb7..b2d945d2 100755
--- a/inc/functions.php
+++ b/inc/functions.php
@@ -680,7 +680,7 @@ function listBoards($just_uri = false, $indexed_only = false) {
 
 	if (!$just_uri) {
 		$query = query("SELECT ``boards``.`uri` uri, ``boards``.`title` title, ``boards``.`subtitle` subtitle, ``board_create``.`time` time, ``boards``.`indexed` indexed FROM ``boards``" . ( $indexed_only ? " WHERE `indexed` = 1 " : "" ) . "LEFT JOIN ``board_create`` ON ``boards``.`uri` = ``board_create``.`uri` ORDER BY ``boards``.`uri`") or error(db_error());
-		$boards = $query->fetchAll();
+		$boards = $query->fetchAll(PDO::FETCH_ASSOC);
 	} else {
 		$boards = array();
 		$query = query("SELECT `uri` FROM ``boards``" . ( $indexed_only ? " WHERE `indexed` = 1" : "" ) . " ORDER BY ``boards``.`uri`") or error(db_error());
diff --git a/inc/instance-config.php b/inc/instance-config.php
index 0a557691..c2df3b5b 100644
--- a/inc/instance-config.php
+++ b/inc/instance-config.php
@@ -355,13 +355,22 @@ EOT;
 			file_write('stylesheets/board/'.$b.'.css', $_POST['css']);
 			file_write($b.'/rules.html', Element('page.html', array('title'=>'Rules', 'subtitle'=>'', 'config'=>$config, 'body'=>'<div class="ban">'.purify($_POST['rules']).'</div>')));
 			file_write($b.'/rules.txt', $_POST['rules']);
+
+			$_config = $config;
+
 			openBoard($b);
-			buildIndex();
-			buildJavascript();
-			$query = query(sprintf("SELECT `id` FROM ``posts_%s`` WHERE `thread` IS NULL", $b)) or error(db_error());
-			while ($post = $query->fetch(PDO::FETCH_ASSOC)) {
-				buildThread($post['id']);
+
+			// be smarter about rebuilds...only some changes really require us to rebuild all threads
+			if ($_config['blotter'] != $config['blotter'] || $_config['field_disable_name'] != $config['field_disable_name'] || $_config['show_sages'] != $config['show_sages']) {
+				buildIndex();
+				$query = query(sprintf("SELECT `id` FROM ``posts_%s`` WHERE `thread` IS NULL", $b)) or error(db_error());
+				while ($post = $query->fetch(PDO::FETCH_ASSOC)) {
+					buildThread($post['id']);
+				}
 			}
+		
+			buildJavascript();
+
 			modLog('Edited board settings', $b);
 		}