app.js

const path = require('path')
const express = require('express');
const mongoose = require('mongoose');
const dotenv = require('dotenv');
const session = require('express-session');
const MongoStore = require('connect-mongo');
const connectDB = require('./config/db');
const morgan = require('morgan');
const exphbs = require('express-handlebars');
const methodOverride = require('method-override')
const passport = require('passport');
const cors = require('cors')


// Load config
dotenv.config({ path: './config/config.env' });

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

connectDB()

const app = express();

// Body parser
app.use(express.urlencoded({ extended: false }))
app.use(cors())
app.use(express.json())

// Method override
app.use(
    methodOverride(function (req, res) {
      if (req.body && typeof req.body === 'object' && '_method' in req.body) {
        // look in urlencoded POST bodies and delete it
        let method = req.body._method
        delete req.body._method
        return method
      }
    })
)

// Logging
if (process.env.NODE_ENV === "development") {
    app.use(morgan('dev'))
}

// Handlebars Helpers
const { formatDate, stripTags, truncate, editIcon, select } = require('./helpers/hbs')

//Handlebars
app.engine('.hbs', exphbs.engine({ helpers: {
    formatDate,
    stripTags,
    truncate,
    editIcon,
    select,
    }, 
    defaultLayout: 'main', extname: '.hbs'}));
app.set('view engine', '.hbs');

// Session middleware
app.use(session({
    secret: 'foo',
    resave: false,
    saveUninitialized: false,
    store: MongoStore.create({mongoUrl:process.env.MONGO_URI})
}))

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

// Set global var
app.use(function (req, res, next) {
    res.locals.user = req.user || null
    next()
})

// Static folder
app.use(express.static(path.join(__dirname, 'public')))

//Routes
app.use('/', require('./routes/index'))
app.use('/auth', require('./routes/auth'))
app.use('/stories', require('./routes/stories'))

const PORT = process.env.PORT || 3000

app.listen(PORT, console.log(`Server running in ${process.env.NODE_ENV} mode on port ${PORT}`))