from __future__ import annotations

import os
import threading
import webbrowser

from backend import create_app

app = create_app()


def _as_bool(value: str | None, default: bool) -> bool:
    if value is None:
        return default
    return value.strip().lower() not in {"0", "false", "no", "off"}


def _open_browser_later(host: str, port: int) -> None:
    if not _as_bool(os.getenv("HVU_OPEN_BROWSER"), True):
        return
    target_host = "127.0.0.1" if host in {"0.0.0.0", "::"} else host
    url = f"http://{target_host}:{port}"
    threading.Timer(1.2, lambda: webbrowser.open(url)).start()


if __name__ == "__main__":
    host = os.getenv("HVU_HOST", "127.0.0.1")
    port = int(os.getenv("HVU_PORT", "5000"))
    debug = _as_bool(os.getenv("HVU_DEBUG"), False)
    _open_browser_later(host, port)
    app.run(host=host, port=port, debug=debug, use_reloader=False)