"""Lightweight FastAPI smoke + telemetry coverage for ``gateway.webapp``."""

from __future__ import annotations

import importlib
import sys
from unittest.mock import MagicMock

import pytest
from fastapi.testclient import TestClient

from gateway import webapp


def test_webapp_module_calls_init_sentry_on_import(monkeypatch: pytest.MonkeyPatch) -> None:
    init_mock = MagicMock()
    monkeypatch.setattr("platform.observability.errors.sentry.init_sentry", init_mock)

    importlib.reload(webapp)

    init_mock.assert_called_once()


def test_webapp_imports_after_stdlib_platform_cached(monkeypatch: pytest.MonkeyPatch) -> None:
    """Docker/uvicorn can cache stdlib ``platform`` before loading the ASGI app."""
    import platform as stdlib_platform

    monkeypatch.setitem(sys.modules, "platform", stdlib_platform)

    reloaded = importlib.reload(webapp)

    assert hasattr(reloaded, "app")
    assert hasattr(sys.modules["platform"], "__path__")


def test_health_response_returns_known_fields() -> None:
    response = webapp.get_health_response()

    assert hasattr(response, "ok")
    assert hasattr(response, "version")
    assert hasattr(response, "llm_configured")
    assert hasattr(response, "env")


def test_ok_route_is_registered() -> None:
    client = TestClient(webapp.app)
    resp = client.get("/ok")
    assert resp.status_code in (200, 503)
    data = resp.json()
    assert "ok" in data
    assert "version" in data