"""API contract tests for live overlay endpoints (no DB required)."""

import asyncio

import httpx

from live_layers import overlay_catalog
from main import app

BASE = "http://test"


async def _get(path: str) -> httpx.Response:
    transport = httpx.ASGITransport(app=app)
    async with httpx.AsyncClient(transport=transport, base_url=BASE) as client:
        return await client.get(path)


async def _post(path: str, payload: dict | None) -> httpx.Response:
    transport = httpx.ASGITransport(app=app)
    async with httpx.AsyncClient(transport=transport, base_url=BASE) as client:
        return await client.post(path, json=payload)


def test_map_layers_includes_overlays():
    body = asyncio.run(_get("/api/map/layers")).json()
    assert "layers" in body
    overlays = body["overlays"]
    for key in ("radar_iem", "radar_rainviewer", "gibs_thermal",
                "aircraft", "vessels", "trains", "nws_alerts",
                "wfigs_incidents", "wfigs_perimeters"):
        assert key in overlays
    assert overlay_catalog()["radar_iem"]["tileUrl"].startswith("https://mesonet")


def test_aircraft_requires_bbox():
    resp = asyncio.run(_get("/api/aircraft"))
    assert resp.status_code == 422


def test_vessels_empty_without_ais_key():
    resp = asyncio.run(_get("/api/vessels"))
    assert resp.status_code == 200
    assert resp.json() == []
    assert "max-age" in (resp.headers.get("cache-control") or "").lower()


def _desired_boxes():
    import asyncio as _a
    from ais_stream import _take_desired_boxes
    return _a.run(_take_desired_boxes())


def test_vessels_subscribe_sets_viewport_box():
    assert _desired_boxes() is None
    resp = asyncio.run(_post("/api/vessels/subscribe", {"bbox": "-70,40,-60,45"}))
    assert resp.status_code == 200
    body = resp.json()
    assert body["ok"] is True and body["bbox"] == "-70,40,-60,45"
    # AISStream corner order: [[lat, lon], [lat, lon]] (southwest, northeast).
    assert _desired_boxes() == [[[40.0, -70.0], [45.0, -60.0]]]


def test_vessels_subscribe_empty_resets():
    assert asyncio.run(_post("/api/vessels/subscribe", {"bbox": "-70,40,-60,45"})).status_code == 200
    resp = asyncio.run(_post("/api/vessels/subscribe", {"bbox": ""}))
    assert resp.status_code == 200
    assert resp.json()["bbox"] is None
    assert _desired_boxes() is None


def test_vessels_subscribe_rejects_bad_bbox():
    for bad in ("1,2,3", "a,b,c,d", "20,30,10,40", "0,0,0,200"):
        resp = asyncio.run(_post("/api/vessels/subscribe", {"bbox": bad}))
        assert resp.status_code == 422, bad
    # Explicit null bbox is the "reset to env default" path (still 200).
    assert asyncio.run(_post("/api/vessels/subscribe", {"bbox": None})).status_code == 200