app.js

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

const placesRoutes = require('./routes/places-routes');
const usersRoutes = require('./routes/users-routes');
const HttpError = require('./models/http-error');

const app = express();

app.use(bodyParser.json());

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

app.use('/api/places', placesRoutes);

app.use('/api/users', usersRoutes);

app.use((req, res, next) => {
    const error = new HttpError('Could not found the route.', 404);
    return next(error);
});

app.use((error, req, res, next) => {
    if(res.headerSent) {
        return next(error);
    }
    res.status(error.code || 500)
        .json({message: error.message || 'An unknown error occured!'});
});

mongoose
.connect('mongodb+srv://rukshanjayasekara:Abcde12345@cluster0.6kfbd.mongodb.net/travelSnapDB?retryWrites=true&w=majority')
.then(() => {
    app.listen(5000);
    console.log('Server listening on port 5000...');
})
.catch(err => {
    console.log(err);
});