app.js

const createError = require('http-errors')
const express = require('express')
const path = require('path')
const logger = require('morgan')
const bodyParser = require('body-parser')

const soundWaveRouter = require('./routes/soundWave')

var app = express()

app.use(logger('dev'))
app.use('/uploads', express.static('uploads'))
app.use(express.json())
app.use(express.urlencoded({ extended: false }))

app.use('*.js', (req, res, next) => {
  res.set('Content-Type', 'text/javascript')
  next();
})

app.use(bodyParser.urlencoded({extended: false}))
// parse json bodies
app.use(bodyParser.json())

app.use((req, res, next) => {
  res.header('Access-Control-Allow-Origin', '*')
  res.header('Access-Control-Allow-Headers', 'Origin, X-Requested-With Content-Type, Accept, Authorization' )

  if(req.method === 'OPTIONS'){
      res.header('Access-Control-Allow-Methods', 'PUT, PATCH, POST, DELETE, GET')
      res.status(200).json({})

  }
  next()
})

app.use('/soundwave', soundWaveRouter)

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  next(createError(404));
});

// error handler
app.use(function(err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {}

  // render the error page
  res.status(err.status || 500);
  //res.render('error')
})

module.exports = app