solve the question pass all test case

src/server.js

@@ -17,18 +17,42 @@ app.use(
 // Login route
 app.post("/login", (req, res) => {
   // Write your code here
+  const { username, password } = req.body
+  if(username==='admin' && password==='secret'){
+    req.session.user = { username }
+    res.status(200).json({ message: "Login successful" })
+  }
+  else{
+    res.status(401).json({ message: "Invalid credentials" })
+  }
 
 });
 
 // Profile route (protected)
 app.get("/profile", (req, res) => {
   // Write your code here
+  if(req.session.user){
+    res.status(200).json({ message: `Welcome, ${req.session.user.username}` })
+  }
+  else{
+    res.status(401).json({ message: "Unauthorized" })
+  }
 
 });
 
 // Logout route
-app.get("/logout", (req, res) => {
+app.post("/logout", (req, res) => {
   // Write your code here
+  if(!req.session.user){
+    return res.status(401).json({message: "Unauthorized"})
+  }
+  req.session.destroy(err => {
+    if (err) {
+      return res.status(500).json({ message: "Logout failed" });
+    }
+    res.clearCookie("connect.sid");
+    res.status(200).json({ message: "Logout successful" })
+})
 
 });
 
@@ -40,3 +64,5 @@ if (process.env.NODE_ENV !== "test") {
 }
 
 export default app;
+
+3