server.js

const http = require('http');
const fs = require('fs');
const _ = require('lodash');


const server = http.createServer((req, res)=>{
  
    //lodash
    const num = _.random(0,20);
    console.log(num)

   const greet = _.once(()=>{
    console.log('hey')
   })


    greet();
    greet();
//set header content type

res.setHeader('content-Type', 'text/html');


//path

let path = './views/';

switch(req.url)
{
    case '/':
        path += 'index.html'
        res.statusCode = 200;
        break;
    case '/about':
        path += 'about.html';
        res.statusCode = 200;
        break;
    case '/about-ms': //redirect
        res.statusCode = 301;
        res.setHeader('Location', '/about');
        res.end();
        break;
    default:
        path += '404.html'
        res.statusCode = 404;

        break;
}

//sender html file
fs.readFile(path, (err,data)=>{
    if(err){
        console.log(err)
        res.end();
    }else{
        //res.write(data);
        
        res.end( data);
    }
})



});

server.listen(3000, 'localhost', ()=>{
    console.log('listening for request on port 3000');
})