app.js

/* eslint-disable no-unused-vars */
const express = require('express');

const app = express();
const morgan = require('morgan');
const bodyParser = require('body-parser');
const mongoose = require('mongoose');

const productRoutes = require('./api/routes/products');
const orderRoutes = require('./api/routes/orders');
const userRoutes = require('./api/routes/users');

mongoose.connect(`mongodb+srv://node-rest:${
  process.env.MONGO_ATLAS_PW
}@node-rest-api-44x3c.mongodb.net/<dbname>?retryWrites=true&w=majority`,
{ useNewUrlParser: true });
mongoose.Promise = global.Promise;

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

// eslint-disable-next-line consistent-return
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, POST, PATCH, DELETE, GET');
    return res.status(200).json({});
  }
  next();
});

// Routes handling requests
app.use('/products', productRoutes);
app.use('/orders', orderRoutes);
app.use('/users', userRoutes);

app.use((req, res, next) => {
  const error = new Error('Not Found');
  error.status = 404;
  next(error);
});

app.use((error, req, res, next) => {
  res.status(error.status || 500);
  res.json({
    error: {
      message: error.message,
    },
  });
});

module.exports = app;