Implement session-based authentication and add logout functionality

Fix #15

server.js

@@ -1,6 +1,7 @@
 require('dotenv').config();
 const express = require('express');
 const bodyParser = require('body-parser');
+const session = require('express-session');
 const debug = require('debug')('app');
 const tasksRouter = require('./routes/tasks');
 const authRouter = require('./routes/auth');
@@ -10,6 +11,15 @@ const port = 3044;
 
 app.use(bodyParser.json());
 app.use(express.static('public'));
+
+// Configure session middleware
+app.use(session({
+    secret: process.env.SESSION_SECRET || 'default_secret', // Use a strong secret in production
+    resave: false,
+    saveUninitialized: true,
+    cookie: { secure: false } // Set to true if using HTTPS
+}));
+
 app.use('/', tasksRouter);
 app.use('/', authRouter);