app.js

const path = require('path');

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

const currencyConverterRoutes = require('./routes/curr-converter.route');
const authRoutes = require('./routes/auth.route');

const app = express();

const fileStorage = multer.diskStorage({
	destination: (req, file, cb) => {
		cb(null, 'images');
	},
	filename: (req, file, cb) => {
		cb(null, new Date().toISOString() + '-' + file.originalname);
	}
});

const fileFilter = (req, file, cb) => {
	if (file.mimetype === 'image/png' || file.mimetype === 'image/jpg' || file.mimetype === 'image/jpeg') {
		cb(null, true);
	} else {
		cb(null, false);
	}
};

app.use(bodyParser.urlencoded({ extended: false }));
app.use(bodyParser.json()); // application/json

app.use(multer({ storage: fileStorage, fileFilter: fileFilter }).single('image'));
app.use('/images', express.static(path.join(__dirname, 'images')));

app.use((req, res, next) => {
	res.setHeader('Access-Control-Allow-Origin', '*');
	res.setHeader('Access-Control-Allow-Methods', 'OPTIONS, GET, POST, PUT, PATCH, DELETE');
	res.setHeader('Access-Control-Allow-Headers', 'Content-Type, Authorization');
	next();
});

app.use('/currency', currencyConverterRoutes);
app.use('/auth', authRoutes);

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

mongoose
	.connect('mongodb+srv://mos:test@cluster0-cgltt.mongodb.net/new-features?retryWrites=true', {
		useNewUrlParser: true
	})
	.then((result) => {
		app.listen(process.env.PORT || 8080, () => {
			console.log('server is running on port 8080');
		});
	})
	.catch((err) => console.log(err));