from __future__ import annotations

import ssl
import logging
import threading
from http.server import ThreadingHTTPServer, SimpleHTTPRequestHandler
from pathlib import Path
from typing import Tuple


class _Handler(SimpleHTTPRequestHandler):
    # Allow passing a base directory at construction time
    def __init__(self, *args, directory: str | None = None, **kwargs):
        super().__init__(*args, directory=directory, **kwargs)


def start_https_static(host: str, port: int, certfile: str, keyfile: str, docroot: str) -> Tuple[ThreadingHTTPServer, threading.Thread]:
    """Start a simple HTTPS static file server in a background thread.

    Returns the (httpd, thread). Caller is responsible for calling httpd.shutdown()
    to stop the server on application exit.
    """
    docroot_path = str(Path(docroot).resolve())

    def handler(*args, **kwargs):
        return _Handler(*args, directory=docroot_path, **kwargs)

    httpd = ThreadingHTTPServer((host, port), handler)
    ctx = ssl.SSLContext(ssl.PROTOCOL_TLS_SERVER)
    ctx.load_cert_chain(certfile=certfile, keyfile=keyfile)
    httpd.socket = ctx.wrap_socket(httpd.socket, server_side=True)

    t = threading.Thread(target=httpd.serve_forever, name="https-static", daemon=True)
    t.start()
    logging.info("HTTPS static server listening on https://%s:%d serving '%s'", host, port, docroot_path)
    return httpd, t