Create Server NodeJS

const http = require('http')
const fs = require('fs')
const path = require('path')

http.createServer((req, res) => {

    if(req.url === '/'){
        sendRes('index.html', 'text/html', res)
    }
    
    else if(/\uploads\/[^\/]+$/.test(req.url) && req.method === 'POST'){

    }
    
    else{
        sendRes(req.url, getContentType(req.url), res)
    }

}).listen(5000)

function getContentType (url){
    switch(path.extname(url)){
        case '.html':
            return 'text/html' 
        case '.css':
            return 'text/css'
        case '.js':
            return 'text/javascript'
        case 'json':
            return 'application.json'
        default: 
            return "application/octate-stream"
    }
}

function sendRes(url, contentType, res){
    let file = path.join(__dirname+'/static/', url)
    fs.readFile(file, (err, data) => {
        if(err){
            res.writeHead(404)
            res.write('Error')
            res.end()
            console.log('error 404')
        }
        else{
            res.writeHead(200, {'Content-Type': contentType})
            res.write(data)
            res.end()
        }
    })
}