server.js

const express = require('express');
const app = express();
const path = require('path');

//db
const connectDB = require('./config/db');

//connection database
connectDB();

//init middleware
app.use(express.json({ extended: false }));

//Route
const usersRoute = require('./routes/users');
const authRoute = require('./routes/auth');
const profileRoute = require('./routes/profile');
const postsRoute = require('./routes/posts');

//Define routes
app.use('/api/users', usersRoute);
app.use('/api/auth', authRoute);
app.use('/api/profile', profileRoute);
app.use('/api/posts', postsRoute);

// Serve static assets in production
if (process.env.NODE_ENV === 'production') {
  // Set static folder
  app.use(express.static('client/build'));

  app.get('*', (req, res) => {
    res.sendFile(path.resolve(__dirname, 'client', 'build', 'index.html'));
  });
}

const PORT = process.env.PORT || 5000;

app.listen(PORT, () => console.log(`server started on port ${PORT}`));