logout is now working

backend/socket.js

@@ -37,6 +37,7 @@ function initializeSocket(server) {
         const username = socket.user.username;
         console.log(username + ' connected');
 
+        loadInitialMessages(socket);
         // chat message event
         socket.on('chat message', async (msg) => {
             let insertedId;
@@ -71,7 +72,6 @@ function initializeSocket(server) {
                 try {
                     const query = 'SELECT id, content, username FROM messages WHERE id > $1 ORDER BY id ASC';
                     const values = [socket.handshake.auth.serverOffset || 0];
-
                     const result = await db.query(query, values);
 
                     for (const row of result.rows) {
@@ -92,4 +92,22 @@ function initializeSocket(server) {
     return io;
 }
 
+async function loadInitialMessages(socket) {
+    try {
+        const query = 'SELECT id, content, username FROM messages ORDER BY id DESC LIMIT 50';
+        const result = await db.query(query);
+
+        for (const row of result.rows.reverse()) {
+            socket.emit('chat message', `${row.username}: ${row.content}`, row.id);
+        }
+
+        // Set the server offset to the latest message id
+        if (result.rows.length > 0) {
+            socket.handshake.auth.serverOffset = result.rows[result.rows.length - 1].id;
+        }
+    } catch (e) {
+        console.error('Error retrieving initial messages:', e);
+    }
+}
+
 module.exports = { initializeSocket };