app.js

const express = require('express');
const app = express();
const exphbs = require('express-handlebars');
const session = require('express-session');
const cookieParser = require('cookie-parser');
const passport = require('passport');
const flash = require('connect-flash');
const { connectMongoDb } = require('./mongodb')
const settings = require('./controllers/settings')

const PORT = process.env.PORT || settings.port
const users = require('./router/users')
const todos = require('./router/todo')

connectMongoDb()

app.use(session({
      secret: 'secret',
      resave: true,
      saveUninitialized: true
    })
  );
app.use(express.urlencoded({ extended: true }));
app.use(express.json())
app.use(cookieParser());

app.use(passport.initialize());
app.use(passport.session());
require('./controllers/config')(passport);

app.use(flash());

// What content files to use
app.engine('hbs', exphbs({extname: '.hbs'}));
app.set('view engine', 'hbs');

// main details for redirect
app.get('/', (req, res) => {
    let title = 'To-Do App'
    res.render('index', {
        title: title
    })
})
app.get('/about', (req, res) => {
  res.render('about')
})

app.use(function(req, res, next) {
  res.locals.error = req.flash('error');
  res.locals.user = req.user || null;
  next();
})

app.use('/users', users)
app.use('/todo', todos)

app.listen(PORT, () => {
    console.log(`Example app listening at http://localhost:${PORT}`)
  })