Added files of the Todo app

Backend/routes/auth.js

@@ -0,0 +1,100 @@
+import express from 'express';
+import jwt from 'jsonwebtoken';
+import User from '../models/User.js';
+
+const router = express.Router();
+
+// Register
+router.post('/register', async (req, res) => {
+  try {
+    const { username, email, password } = req.body;
+
+    // Validation
+    if (!username || !email || !password) {
+      return res.status(400).json({
+        message: 'Username, email, and password are required'
+      });
+    }
+
+    if (password.length < 6) {
+      return res.status(400).json({
+        message: 'Password must be at least 6 characters long'
+      });
+    }
+
+    // Check if user already exists
+    const existingUser = await User.findOne({
+      $or: [{ email }, { username }]
+    });
+
+    if (existingUser) {
+      return res.status(400).json({
+        message: 'User with this email or username already exists'
+      });
+    }
+
+    // Create new user
+    const user = new User({ username, email, password });
+    await user.save();
+
+    // Generate JWT token
+    const token = jwt.sign(
+      { userId: user._id },
+      process.env.JWT_SECRET,
+      { expiresIn: '7d' }
+    );
+
+    res.status(201).json({
+      message: 'User created successfully',
+      token,
+      user: {
+        id: user._id,
+        username: user.username,
+        email: user.email
+      }
+    });
+  } catch (error) {
+    console.error('Registration error:', error);
+    res.status(500).json({ message: 'Server error', error: error.message });
+  }
+});
+
+// Login
+router.post('/login', async (req, res) => {
+  try {
+    const { email, password } = req.body;
+
+    // Find user by email
+    const user = await User.findOne({ email });
+    if (!user) {
+      return res.status(400).json({ message: 'Invalid credentials' });
+    }
+
+    // Check password
+    const isMatch = await user.comparePassword(password);
+    if (!isMatch) {
+      return res.status(400).json({ message: 'Invalid credentials' });
+    }
+
+    // Generate JWT token
+    const token = jwt.sign(
+      { userId: user._id },
+      process.env.JWT_SECRET,
+      { expiresIn: '7d' }
+    );
+
+    res.json({
+      message: 'Login successful',
+      token,
+      user: {
+        id: user._id,
+        username: user.username,
+        email: user.email
+      }
+    });
+  } catch (error) {
+    res.status(500).json({ message: 'Server error', error: error.message });
+  }
+});
+
+export default router;

Backend/routes/todos.js

@@ -0,0 +1,92 @@
+import express from 'express';
+import Todo from '../models/Todo.js';
+
+const router = express.Router();
+
+// Get todos for a specific date
+router.get('/', async (req, res) => {
+  try {
+    const { date } = req.query;
+    let query = { userId: req.user._id };
+
+    if (date) {
+      const startDate = new Date(date);
+      const endDate = new Date(date);
+      endDate.setDate(endDate.getDate() + 1);
+      
+      query.dueDate = {
+        $gte: startDate,
+        $lt: endDate
+      };
+    }
+
+    const todos = await Todo.find(query).sort({ createdAt: -1 });
+    res.json(todos);
+  } catch (error) {
+    res.status(500).json({ message: 'Server error', error: error.message });
+  }
+});
+
+// Create new todo
+router.post('/', async (req, res) => {
+  try {
+    const { title, description, priority, dueDate } = req.body;
+
+    const todo = new Todo({
+      title,
+      description,
+      priority,
+      dueDate: new Date(dueDate),
+      userId: req.user._id
+    });
+
+    await todo.save();
+    res.status(201).json(todo);
+  } catch (error) {
+    res.status(500).json({ message: 'Server error', error: error.message });
+  }
+});
+
+// Update todo
+router.put('/:id', async (req, res) => {
+  try {
+    const { id } = req.params;
+    const updates = req.body;
+
+    const todo = await Todo.findOneAndUpdate(
+      { _id: id, userId: req.user._id },
+      updates,
+      { new: true }
+    );
+
+    if (!todo) {
+      return res.status(404).json({ message: 'Todo not found' });
+    }
+
+    res.json(todo);
+  } catch (error) {
+    res.status(500).json({ message: 'Server error', error: error.message });
+  }
+});
+
+// Delete todo
+router.delete('/:id', async (req, res) => {
+  try {
+    const { id } = req.params;
+
+    const todo = await Todo.findOneAndDelete({
+      _id: id,
+      userId: req.user._id
+    });
+
+    if (!todo) {
+      return res.status(404).json({ message: 'Todo not found' });
+    }
+
+    res.json({ message: 'Todo deleted successfully' });
+  } catch (error) {
+    res.status(500).json({ message: 'Server error', error: error.message });
+  }
+});
+
+export default router;