index.js

const express = require('express');
const bodyParser = require('body-parser');
const app = express();
const morgan = require('morgan');
const spotifyApi = require('./lib/spotifyWebApi');
//local require\
const db=require('./db');
const router = require('./router.js');
const nconf = require('nconf');

//don't show the log when it is test
if(process.env.NODE_ENV !== 'test') {
    //use morgan to log at command line
    // app.use(morgan('combined')); //'combined' outputs the Apache style LOGs
}

app.use(bodyParser.json());
app.use(function(req, res, next){
  req.spotifyApi = spotifyApi;
  next();
});
app.use(router);

const port = nconf.get('PORT') || 3000;

app.listen(port, function () {
  console.log('Listening on port ' + port);
});


module.exports = app; // for testing