real-time-logging-app.js

// app.js
const express = require('express');
const http = require('http');
const socketIO = require('socket.io');
const mongoose = require('mongoose');

const messageSchema = new mongoose.Schema({
  user: String,
  text: String,
  timestamp: { type: Date, default: Date.now },
});

const Message = mongoose.model('Message', messageSchema);

module.exports = Message;

// Connect to MongoDB
mongoose.connect('mongodb://localhost:27017/real-time-logging-app');

// Create an Express app
const app = express();

// Create an HTTP server
const server = http.createServer(app);

// Create a Socket.io server
const io = socketIO(server);

io.on('connection', (socket) => {
  console.log('User connected:', socket.id);

  // Listen for incoming chat messages
  socket.on('chat message', (data) => {
    console.log('Received message:', data);

    // Save the message to MongoDB
    const message = new Message({ user: data.user, text: data.message });
    message.save().then(err => {
      if (!err) {
        console.error('Error saving message to database:', err);
      } else {
        console.log('Message saved to the database');
      }
    });

    // Broadcast the message to all connected clients
    io.emit('chat message', data);
  });

  // Listen for user disconnection
  socket.on('disconnect', () => {
    console.log('User disconnected:', socket.id);
  });
});

app.use(express.static('public'));

// Start the server
server.listen(3000, () => {
  console.log('Server listening on port 3000');
});