#!/usr/bin/env node
/**
 * Simple static file server for development
 */

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

const PORT = process.argv[2] || 9000;

const MIME_TYPES = {
  '.html': 'text/html',
  '.css': 'text/css',
  '.js': 'application/javascript',
  '.json': 'application/json',
  '.jpg': 'image/jpeg',
  '.jpeg': 'image/jpeg',
  '.png': 'image/png',
  '.md': 'text/markdown',
  '.ico': 'image/x-icon'
};

const server = http.createServer((req, res) => {
  let filePath = '.' + (req.url === '/' ? '/index.html' : req.url);
  filePath = decodeURIComponent(filePath);

  const ext = path.extname(filePath).toLowerCase();
  const contentType = MIME_TYPES[ext] || 'application/octet-stream';

  fs.readFile(filePath, (err, content) => {
    if (err) {
      if (err.code === 'ENOENT') {
        res.writeHead(404);
        res.end('Not found');
      } else {
        res.writeHead(500);
        res.end('Server error');
      }
    } else {
      res.writeHead(200, { 'Content-Type': contentType });
      res.end(content);
    }
  });
});

server.listen(PORT, () => {
  console.log(`Server running at http://localhost:${PORT}/`);
});