"""GET /api/conditions — sky always present, geomagnetic nullable, lon lenient.

The geomagnetic cache is stubbed in every test so nothing here ever
touches NOAA; a cold real cache would otherwise fire a live HTTP request.
"""

import pytest

import app.routes.conditions as conditions_module


class _StubCache:
    def __init__(self, reading):
        self._reading = reading

    async def reading(self):
        return self._reading


@pytest.fixture
def geo_null(monkeypatch):
    monkeypatch.setattr(conditions_module, "geomagnetic_cache", _StubCache(None))


@pytest.fixture
def geo_storm(monkeypatch):
    monkeypatch.setattr(
        conditions_module,
        "geomagnetic_cache",
        _StubCache({"kp": 6.33, "label": "moderate geomagnetic storm",
                    "disturbance": 6.33 / 9.0, "storm": True}),
    )


@pytest.mark.asyncio
async def test_sky_always_present_geomagnetic_null_tolerated(client, geo_null):
    resp = await client.get("/api/conditions")
    assert resp.status_code == 200
    body = resp.json()
    assert body["geomagnetic"] is None
    sky = body["sky"]
    assert sky["moon_name"]
    assert 0.0 <= sky["moon_illumination"] <= 1.0
    assert 0.0 <= sky["thinness"] <= 1.0
    # No longitude offered — witching proximity is unknowable.
    assert sky["witching_proximity"] is None


@pytest.mark.asyncio
async def test_valid_lon_yields_witching_proximity(client, geo_null):
    resp = await client.get("/api/conditions", params={"lon": "-3.7"})
    assert resp.status_code == 200
    witching = resp.json()["sky"]["witching_proximity"]
    assert witching is not None
    assert 0.0 <= witching <= 1.0


@pytest.mark.asyncio
@pytest.mark.parametrize("bad", ["ghost", "", "nan", "inf", "999", "-181"])
async def test_invalid_lon_ignored_not_422(client, geo_null, bad):
    resp = await client.get("/api/conditions", params={"lon": bad})
    assert resp.status_code == 200
    assert resp.json()["sky"]["witching_proximity"] is None


@pytest.mark.asyncio
async def test_geomagnetic_reading_passed_through(client, geo_storm):
    resp = await client.get("/api/conditions")
    assert resp.status_code == 200
    geo = resp.json()["geomagnetic"]
    assert geo["kp"] == pytest.approx(6.33)
    assert geo["storm"] is True
    assert geo["label"] == "moderate geomagnetic storm"