app.js

const express = require('express');
const path = require('path');
const bodyParser = require('body-parser');
const cors = require('cors');
const passport = require('passport');
const mongoose = require('mongoose');
const config = require('./config/database');

mongoose.connect(config.database);

//on connection
mongoose.connection.on('connected', ()=>{
    console.log('Connected to database: '+config.database);
});

//on error in DB connection
mongoose.connection.on('error', (err)=>{
    console.log('Database error: '+err);
});

const app = express();

const users = require('./routes/users');

//Port Number
const port = 3000;

//CORS Middleware
app.use(cors());

//body parser Middleware
app.use(bodyParser.json());

//Passport Middleware
app.use(passport.initialize());
app.use(passport.session());

require('./config/passport')(passport);

//static files
app.use(express.static(path.join(__dirname, 'public')));

//routes
app.use('/users', users);

//Index Route
app.get('/', (req, res)=>{
    res.send('Invalid Endpoint');
});

//Start Server
app.listen(port, ()=>{
    console.log('Server started on port: '+port);
});