from fastapi.testclient import TestClient

from app.main import app


def test_health() -> None:
    response = TestClient(app).get("/health")
    assert response.status_code == 200
    assert response.json() == {"status": "ok", "service": "mobilityops-api"}


def test_liveness_is_process_only() -> None:
    response = TestClient(app).get("/health/live")
    assert response.status_code == 200
    assert response.json()["status"] == "ok"


def test_readiness_checks_the_canonical_database() -> None:
    response = TestClient(app).get("/health/ready")
    assert response.status_code == 200
    assert response.json() == {
        "status": "ready",
        "service": "mobilityops-api",
        "database": "up",
    }


def test_readiness_degrades_when_database_is_unavailable(monkeypatch) -> None:
    import app.main as main_module

    class BrokenSession:
        def __enter__(self):
            raise ConnectionError("database unavailable")

        def __exit__(self, *_args):
            return False

    monkeypatch.setattr(main_module, "SessionLocal", BrokenSession)
    response = TestClient(app).get("/health/ready")
    assert response.status_code == 503
    assert response.json()["database"] == "down"