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');

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

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

// connect to database
connectDB();

const app = express();

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

// app.set('trust proxy', true);

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

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

// Set global var middleware
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}`)
);