app.js

const express = require('express');
const session = require('express-session');
const { v4 } = require('uuid');
const path = require("path");

const app = express();
const PORT = 3000;

app.use(express.static(__dirname + '/assets'));

// Created session for 30 min
app.use(session({ 
  genid: function(req){
    return v4();
  },
  cookie: {expires: 1800000},
  secret: 'secret_key',
  name: 'uniqueSessionID',
  saveUninitialized: false
}))


app.get("/", (req, res) => {
  res.sendFile("index.html", { root: path.join(__dirname) });
});

app.get(`/blogs/:id`, (req, res) => {
  // console.log(req.session);
  console.log(req.path)
  if(req.session.loggedIn){
    if (req.params.id) {
      res.sendFile(req.path, {root: path.join(__dirname) })
    }
  }else{
    res.sendFile('login.html', {root: path.join(__dirname) })
  }
});

app.get('/login', (req, res) => {
  res.sendFile('login.html', { root: path.join(__dirname) })
})

app.post('/authenticate'
  , express.urlencoded({ extended: true })
  , (req, res, next) => {
    if (req.body.username == 'test' && req.body.password == 'test') {
      res.locals.username = req.body.username
      next()
    }
    else
      res.sendStatus(401)
  }
  , (req, res) => {
      const header = req.header('Referer');
      req.session.loggedIn = true
      req.session.username = res.locals.username
      // console.log(req.session)
      if(header.includes('/blogs/')){
        res.redirect(header);
      }else{
        res.redirect("/")
      }
  })

app.listen(PORT, (req, res) => {
  console.log(`Your server is running on ${PORT}`)
});