#!/usr/bin/env python3
"""Static server that disables all browser caching (so eye3d updates are picked up immediately)."""
import os, sys
from http.server import SimpleHTTPRequestHandler, ThreadingHTTPServer

class NoCacheHandler(SimpleHTTPRequestHandler):
    def end_headers(self):
        self.send_header('Cache-Control', 'no-store, no-cache, must-revalidate, max-age=0')
        self.send_header('Pragma', 'no-cache')
        self.send_header('Expires', '0')
        super().end_headers()

if __name__ == '__main__':
    port = int(sys.argv[1]) if len(sys.argv) > 1 else 8099
    directory = sys.argv[2] if len(sys.argv) > 2 else os.getcwd()
    os.chdir(directory)
    ThreadingHTTPServer(('127.0.0.1', port), NoCacheHandler).serve_forever()