app.js

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

// Loding Config
dotenv.config({ path:'./config/config.env' })

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

connectDB()

const app = express()

app.use(express.urlencoded({ extended: false }))
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
      var 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,truncate,stripTags,editIcon,select } = require('./helpers/hbs')

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

// Sessions
app.use(session({
    secret: 'myhiddenkey', 
    resave: false,
    saveUninitialized: false,
    store: new MongoStore({mongooseConnection: mongoose.connection})
}))

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

// Set global variable

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 || 5000

app.listen( 
    PORT, 
    console.log(`Server Runnig at PORT: ${PORT} in ${process.env.NODE_ENV} mode`)
)