server.js

const http = require('http');
const express = require('express');
const mongoose = require('mongoose');
const bodyParser = require('body-parser');
const dotenv = require('dotenv');
const cors = require('cors');
const session = require('express-session');
const path = require('path');


dotenv.config();
const app = express();
app.use(cors());
app.use(bodyParser.json());

// EJS setup
app.set('view engine', 'ejs');
app.set('views', path.join(__dirname, 'views'));

// Session setup
app.use(session({
  secret: process.env.SESSION_SECRET || 'secret123',
  resave: false,
  saveUninitialized: false
}));

// 🟢 THÊM 2 middleware quan trọng này
app.use(express.urlencoded({ extended: true })); // Để xử lý form (application/x-www-form-urlencoded)
app.use(express.json()); // Nếu bạn dùng JSON

const server = http.createServer(app);
const { Server } = require('socket.io');
const io = new Server(server, {
  cors: {
    origin: '*'
  }
});

mongoose.connect(process.env.MONGO_URI, {
  useNewUrlParser: true,
  useUnifiedTopology: true
});

app.use((req, res, next) => {
  req.io = io; // inject io into request
  next();
});

// Routes
const authRoutes = require('./routes/authRoutes');
const regRoutes = require('./routes/registrationRoutes');
const eventRoutes = require('./routes/eventRoutes');
app.use('/auth', authRoutes);
app.use('/registrations', regRoutes);
app.use('/events', eventRoutes);

// WebSocket event listeners
io.on('connection', socket => {
  console.log('Client connected:', socket.id);
  socket.on('disconnect', () => console.log('Client disconnected:', socket.id));
});

server.listen(3000, () => console.log('Server running on port 3000'));