"""HTTP reachability checks for critical web services."""

from __future__ import annotations

import urllib.request
import urllib.error
from typing import Any


def _http_check(url: str) -> dict[str, Any]:
    """Returns ok if the URL responds with any 2xx or 3xx status code."""
    try:
        req = urllib.request.Request(url, method="GET")
        with urllib.request.urlopen(req, timeout=5) as resp:
            status = resp.status
    except urllib.error.HTTPError as e:
        status = e.code
    except Exception as exc:
        return {"status": "unreachable", "error": str(exc)}

    ok = status < 400
    return {"status": "ok" if ok else "degraded", "http_code": status}


def check_web_services() -> dict[str, Any]:
    """
    Verify that critical web services respond over HTTP.

    Checks:
    - Guacamole: login page
    - Jellyfin: web UI root
    - Navidrome: web UI root
    """
    return {
        "guacamole": _http_check("http://localhost:8082/guacamole/"),
        "jellyfin":  _http_check("http://localhost:8096/web/index.html"),
        "navidrome": _http_check("http://localhost:4533/"),
    }


if __name__ == "__main__":
    import json
    print(json.dumps(check_web_services(), indent=4))