Adding server.js functionality and main operations for todos.js

routes/todos.js

+const express = require('express');
+const router = express.Router();
+const Todo = require('../models/todo');
+
+// Get all TODOs for the logged-in user
+router.get('/', async (req, res) => {
+  const todos = await Todo.find({ userId: req.user.id });
+  res.json(todos);
+});
+
+// Add a new TODO
+router.post('/', async (req, res) => {
+  const { description } = req.body;
+  const todo = new Todo({ description, userId: req.user.id });
+  await todo.save();
+  res.json(todo);
+});
+
+// Mark TODO as done
+router.put('/:id', async (req, res) => {
+  const todo = await Todo.findById(req.params.id);
+  todo.isDone = true;
+  await todo.save();
+  res.json(todo);
+});
+
+// Delete a TODO
+router.delete('/:id', async (req, res) => {
+  await Todo.findByIdAndDelete(req.params.id);
+  res.json({ success: true });
+});
+
+module.exports = router;

server.js

+// server.js
 const express = require('express');
+const path = require('path');
+const connectDB = require('./mongodb'); // Import the MongoDB connection
+
 const app = express();
 
-// Basic route for testing
-app.get('/', (req, res) => {
-  res.send('Server is running!');
-});
+// Middleware
+app.use(express.json()); // Use express' built-in body-parser for JSON
+app.use(express.static(path.join(__dirname, 'public'))); // Serve static files
+
+// Connect to MongoDB
+connectDB(); // Call the function to establish the database connection
+
+// Routes
+app.use('/api/todos', require('./routes/todos'));
+app.use('/api/users', require('./routes/users'));
 
 // Start the server
 const PORT = process.env.PORT || 3000;
-app.listen(PORT, () => {
-  console.log(`Server is running on port ${PORT}`);
-});
+app.listen(PORT, () => console.log(`Server running on port ${PORT}`));