import express from 'express';
import mongoose from 'mongoose';
import cors from 'cors';
import dotenv from 'dotenv';
import authRoutes from './routes/auth.js';
import todoRoutes from './routes/todos.js';
import { authenticateToken } from './middleware/auth.js';

dotenv.config();

const app = express();
const PORT = process.env.PORT || 5000;

// Middleware
app.use(cors());
app.use(express.json());

// Root route
app.get('/', (req, res) => {
  res.json({ message: 'Todo App Backend API is running!' });
});

// Routes
app.use('/api/auth', authRoutes);
app.use('/api/todos', authenticateToken, todoRoutes);

// Error handling middleware
app.use((err, req, res, next) => {
  console.error('Error:', err);
  res.status(500).json({ message: 'Internal server error', error: err.message });
});

// MongoDB connection
mongoose.connect(process.env.MONGO_URL)
  .then(() => {
    console.log('✅ Connected to MongoDB');
    console.log('Database:', process.env.MONGO_URL);
  })
  .catch((err) => {
    console.error('❌ MongoDB connection error:', err.message);
    console.log('Make sure MongoDB is running on your system');
    process.exit(1);
  });

app.listen(PORT, () => {
  console.log(`🚀 Server running on port ${PORT}`);
  
});