server.js

const express = require('express');
const connectDB = require('./config/db');
const dotenv = require("dotenv");
const path = require('path');

const app= express();

dotenv.config({ path: ".env" });
//Connect db
connectDB();

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

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

// app.get('/', (req,res) => res.send('API running'))

//define routes
app.use('/api/users', require('./routes/api/users'));
app.use('/api/auth', require('./routes/api/auth'));
app.use('/api/profile', require('./routes/api/profile'));
app.use('/api/posts', require('./routes/api/posts'));

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

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

app.listen(PORT, () => {
  console.log('App listening on port 5000!');
});