fix some things

src/app/chat/page.tsx

@@ -168,8 +168,8 @@ export default function Home() {
       setConnected(true);
       if (token != null)
         socket.emit('SIG_CHAT_JOIN', { token }, joinChatRes);
-
-      socket.emit('SIG_CHAT_CHANNELS', {}, channelsChatRes);
+      else
+        socket.emit('SIG_CHAT_CHANNELS', {}, channelsChatRes);
 
       setTextBox(<div className={styles.textBox}>
         <textarea rows={2} className={styles.textBoxInput} ref={chatInput}></textarea>
@@ -267,17 +267,6 @@ export default function Home() {
     removeUser(userId);
   });
 
-  const prevscrtop = useRef(0);
-  useEffect(() => {
-    if (
-      chatPaneRef.current != null
-      && chatPaneRef.current.scrollTop >= prevscrtop.current
-    ) {
-      chatPaneRef.current.scrollTop = chatPaneRef.current.scrollHeight;
-      prevscrtop.current = chatPaneRef.current.scrollTop;
-    }
-  }, [messages])
-
   // message stuff
 
   function addMessage(messagesdata:MessageType) {
@@ -335,6 +324,7 @@ export default function Home() {
       setError(type, spec, data);
     } else {
       setWhoAmI(data);
+      socket.emit('SIG_CHAT_CHANNELS', {}, channelsChatRes);
     }
   }
 
@@ -352,6 +342,8 @@ export default function Home() {
     }
   }
 
+  const prevscrtop = useRef(0);
+
   function chgchannelChatRes({ type, spec, data }:Res) {
     unsetError();
     if (type.includes("ERR")) {
@@ -366,6 +358,7 @@ export default function Home() {
 
   let [ messageLayout, setMessageLayout ] = useState<React.ReactNode>();
   useEffect(() => {
+
     if (messages.length > 0)
       setMessageLayout(messages.map(Message.current));
     else if (whoami.admin || channels.find(x => x.name == channel)?.writable)
@@ -390,6 +383,16 @@ export default function Home() {
       </>);
   }, [affectedByUpdate, messages]);
 
+  useEffect(() => {
+    if (
+      chatPaneRef.current != null
+      && chatPaneRef.current.scrollTop >= prevscrtop.current - 100
+    ) {
+      chatPaneRef.current.scrollTop = chatPaneRef.current.scrollHeight;
+      prevscrtop.current = chatPaneRef.current.scrollTop;
+    }
+  }, [messageLayout])
+
   return (
     <ChatLayout 
       title="Chat"