const http = require("http");
const fs = require("fs");
const path = require("path");

const PORT = process.env.PORT || 3000;

http.createServer((req, res) => {
  let file = req.url === "/" ? "/index.html" : req.url.split("?")[0];
  const full = path.join(__dirname, file);
  
  if (full.startsWith(__dirname) && fs.existsSync(full) && fs.statSync(full).isFile()) {
    const ext = path.extname(full);
    const type = ext === ".css" ? "text/css" : ext === ".js" ? "application/javascript" : "text/html";
    res.writeHead(200, { "Content-Type": type + "; charset=utf-8" });
    return res.end(fs.readFileSync(full));
  }
  
  res.writeHead(404); res.end("Not found");
}).listen(PORT, () => console.log("Планировщик отпуска на порту " + PORT));