return username and id in login and signup page

server/server.js

@@ -139,7 +139,11 @@ app.post("/api/auth/signup", async (req, res) => {
       // secure: true,
     });
 
-    return res.status(200).json({ message: "Successfully signed up" });
+    return res.status(200).json({
+      message: "Successfully signed up",
+      username: username,
+      user_id: user_id,
+    });
   } catch (e) {
     console.error("Signup error: ", e);
     return res.status(500).json({ message: "internal server error" });
@@ -185,7 +189,11 @@ app.post("/api/auth/login", async (req, res) => {
         res.cookie("token", token, {
           maxAge: 30 * 24 * 60 * 60 * 1000, // 30 days
         });
-        return res.status(200).json({ message: "Successfully logged In" });
+        return res.status(200).json({
+          message: "Successfully logged In",
+          username: username,
+          user_id: user_id,
+        });
       })
       .catch((e) => {
         console.error("Failed to compare password: ", e);