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

const PORT = 3010;

const mimeTypes = {
    '.html': 'text/html',
    '.js':   'application/javascript',
    '.css':  'text/css',
    '.png':  'image/png',
    '.ico':  'image/x-icon',
    '.json': 'application/json',
};

const server = http.createServer((req, res) => {
    const filePath = path.join(__dirname, req.url === '/' ? 'index.html' : req.url);
    const ext = path.extname(filePath);
    const contentType = mimeTypes[ext] || 'application/octet-stream';

    fs.readFile(filePath, (err, data) => {
        if (err) {
            res.writeHead(404, { 'Content-Type': 'text/plain' });
            res.end('404 Not Found');
            return;
        }
        res.writeHead(200, { 'Content-Type': contentType });
        res.end(data);
    });
});

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