server.js

/**
 * This is a node.js script that performs the Authorization Code oAuth2
 *  flow to authenticate against Spotify accounts.
 *
 * For more information about Spotify Auth Flow, read the following:
 * https://developer.spotify.com/web-api/authorization-guide/#authorization_code_flow
 **/

/* eslint-disable camelcase */
const cookieParser = require('cookie-parser');
const bodyParser = require('body-parser')
const express = require('express')
const path = require('path')
const cors = require('cors')

const PORT = process.env.NODE_PORT || 8081
const server = express()

/* CONFIGURE SERVER */   
server.use(bodyParser.json())
server.use(bodyParser.urlencoded({ extended: true, }))
server.use(cookieParser())
server.use(cors())

/* CONFIGURE ROUTES */   
server.use('/spotify', require('./routes/spotify'))

/* CONFIGURE NODE ENVIRONMENT */
if (process.env.NODE_ENV === 'production') {
    const root = path.join(__dirname, 'client', 'build')
    server.use(express.static(root));
    server.get("*", (req, res) => {
        res.sendFile('index.html', { root });
    })} 
else server.use(express.static(path.join(__dirname, 'client', 'public')))

/* LISTEN FOR TRAFFIC */
server.listen(PORT);
console.log(`finetune.io server listening on ${ PORT }`);
console.log(`Node environment set to ${ process.env.NODE_ENV }`);

/* eslint-enable */