"""libredesk — UI probe: the served root HTML is the real LibreDesk app, not a fallback page.

/health passing only proves the process is up. This asserts the front-end SPA is actually bound and
serving its own shell — a wedged backend or a misrouted proxy would 200 with generic/empty content.
"""

from __future__ import annotations

import os
import ssl
import sys
import urllib.request

sys.path.insert(0, os.path.join(os.path.dirname(__file__), "..", "..", "..", "runner"))
from harness import http as harness_http  # noqa: E402

_CTX = ssl.create_default_context()
_CTX.check_hostname = False
_CTX.verify_mode = ssl.CERT_NONE


def _get_body(url: str) -> tuple[int, str]:
    req = urllib.request.Request(url, method="GET")
    with urllib.request.urlopen(req, timeout=15, context=_CTX) as r:
        return r.status, r.read().decode(errors="replace")


def test_libredesk_serves_app_shell(live_app):
    """GET /; assert LibreDesk-specific brand or SPA-asset markers in the served HTML."""
    url = f"https://{live_app}/"

    def _ready():
        try:
            status, body = _get_body(url)
        except Exception:  # noqa: BLE001
            return None
        return body if status in (200, 301, 302) else None

    body = harness_http.assert_converges(_ready, f"GET {url}", max_wait=120, interval=5)
    lower = body.lower()

    # Brand markers: the app title / meta / bundle references carry "libredesk".
    brand = [m for m in ("libredesk", "libre desk") if m in lower]
    # SPA asset markers: the built front-end serves hashed JS/CSS bundles + a favicon.
    assets = [m for m in ("/assets/", "favicon", ".js", ".css", "<div id=\"app\"", "id=app") if m in body]

    assert brand or assets, (
        f"GET {url} HTML has no LibreDesk brand or SPA-asset markers. Excerpt: {body[:300]!r}"
    )