app.js

const express = require('express');
const ejs = require('ejs');
const dotenv = require('dotenv');
const mongoose = require('mongoose');
const session = require('express-session');
const MongoStore = require('connect-mongo');
const flash = require('connect-flash');
const methodOverride = require('method-override');
const pageRoute = require('./routes/pageRoute');
const courseRoute = require('./routes/courseRoute');
const categoryRoute = require('./routes/categoryRoute');
const authRoute = require('./routes/authRoute');

const app = express();

// .env file
dotenv.config();

// Db Connection
mongoose
  .connect(process.env.DB_URL)
  .then(() => {
    console.log('Db connected :)');
  })
  .catch((err) => {
    console.log(err);
  });

// Template Engine
app.set('view engine', 'ejs');

// Global session variable
global.userIN = null;

// Middlewares
app.use(express.static('public'));
app.use(express.json()); // for parsing application/json
app.use(express.urlencoded({ extended: true })); // for parsing application/x-www-form-urlencoded
app.use(
  session({
    secret: 'my_keyboard_cat',
    resave: false,
    saveUninitialized: true,
    store: MongoStore.create({
      mongoUrl: process.env.DB_URL,
    }),
  })
);
app.use(flash());
app.use((req, res, next) => {
  res.locals.flashMessages = req.flash();
  next();
});
app.use(
  methodOverride('_method', {
    methods: ['POST', 'GET'],
  })
);

// Routes
app.use('*', (req, res, next) => {
  userIN = req.session.userID;
  next();
});
app.use('/', pageRoute);
app.use('/courses', courseRoute);
app.use('/categories', categoryRoute);
app.use('/users', authRoute);

const port = process.env.PORT || 5000;
app.listen(port, () => {
  console.log(`The server has been started on port ${port}`);
});