app.js

var http = require('http');
var fs = require('fs');

//server creation 

var server = http.createServer(function(req,res){
	console.log("request was made: " + req.url);
    //creating  routing system  for the  server
    
    var routeToFile = {
        '/': '/index.html',
        '/home': '/index.html',
        '/contact': '/contact.html',
        '/404': '404.html'  
    };

    if(routeToFile[req.url]){
        res.writeHead(200,{'Content-Type':'text/html'});
        fs.createReadStream(__dirname + routeToFile[req.url]).pipe(res);
     }else if(req.url === '/api/ninjas'){
        var ninjas = [{name:'rushdi',age:22},{name :'kader',age:34}];
        res.writeHead(200,{'Content-Type':'application/json'});
        res.end(JSON.stringify(ninjas));
     }else{
        res.writeHead(404,{'Content-Type':'text/html'});
        fs.createReadStream(__dirname + routeToFile['/404']).pipe(res);
     }
});


//response call  
server.listen(3000,'127.0.0.1');
console.log("hi the result is shown and it is listening in port 3000");