#!/usr/bin/env python3
"""Serves grit.js with proper CORS headers for CDN usage."""

from http.server import HTTPServer, SimpleHTTPRequestHandler

class CORSHandler(SimpleHTTPRequestHandler):
    def end_headers(self):
        self.send_header('Access-Control-Allow-Origin', '*')
        self.send_header('Access-Control-Allow-Methods', 'GET, OPTIONS')
        self.send_header('Cache-Control', 'public, max-age=3600')
        super().end_headers()

    def do_OPTIONS(self):
        self.send_response(200)
        self.end_headers()

if __name__ == '__main__':
    port = 8001
    print(f'Serving grit.js on http://localhost:{port}')
    print(f'Usage: <script src="http://localhost:{port}/grit.js"></script>')
    HTTPServer(('', port), CORSHandler).serve_forever()