--- a/src/chat.js	Wed Nov 06 23:05:45 2024 -0700
+++ b/src/chat.js	Sat Nov 09 19:17:21 2024 -0700
@@ -3,6 +3,7 @@
 let title = document.title;
 let currentChatId = null;
 let eventSource;
+let lastUpdate;
 
 function evalEvent(event) {
 	// console.log(event);
@@ -143,12 +144,14 @@
 		document.title = title + ' *';
 }
 
-function getChats(chatId) {
+function getChats(chatId,updated) {
 	let first = document.querySelector('div[chat]');
 	if( !first || first.getAttribute('chat') != chatId ) {
 		// console.log('getChats');
 		ajax('get_chats.js');
 	}
+	if( updated )
+		lastUpdate = updated;
 }
 
 function gotChats(html) {
@@ -197,3 +200,14 @@
 		pulldown.scrollIntoViewIfNeeded(false);
 	}
 }
+
+setInterval(function(){
+	ajax(`heartbeat.js?last_update=${lastUpdate}`);
+}, 60000 );
+
+function resync(updated) {
+	lastUpdate = updated;
+	currentChatId = null;
+	document.querySelector('div[posts]').innerHTML = '';
+	ajax('get_chats.js');
+}