//import moduly
const http = require("http")
const fs = require("fs")
const path = require("path")

const server = http.createServer((req,res)=>{
    console.log("REQ:",req.url)
    const filePath = req.url === "/" ? "index.html":req.url.slice(1) //nalzeneme soubor 
    const fullPath = path.join(__dirname,filePath) //načteme CELOU cestu
    console.log("otevírám:", fullPath)

    fs.readFile(fullPath,(err,content)=>{
        if(err){
            res.writeHead(404,{"content-type":"text/html; charset=utf-8"})
            res.end("<h1>ERROR</h1><h2>Soubor není </h2>")
        } else {
            res.writeHead(200,{"content-type":"text/html"})
            res.end(content)
        }
    })
})

const PORT = process.argv[2];
//const PORT = 3000;
server.listen(PORT,()=>{
    console.log(`Server bezi http://localhost:${PORT}`)
})