"""HTTP client against a real local server."""

from __future__ import annotations

import aiohttp
import pytest

from custom_components.ninlight.api import (
    NinlightAuthError,
    NinlightBusyError,
    NinlightClient,
    NinlightConnectionError,
    NinlightRequestError,
    NinlightResponseError,
)
from tests_unit.conftest import FakeLamp
from tests_unit.samples import INFO_RGB, SETTINGS_COMPILED, STATE_RGB, TOKEN


def client_for(lamp: FakeLamp, session: aiohttp.ClientSession, **kwargs: float) -> NinlightClient:
    return NinlightClient(session, lamp.host, TOKEN, port=lamp.port, **kwargs)


async def test_get_state_sends_raw_token_header(lamp: FakeLamp, session) -> None:
    lamp.reply("GET", "/api/v1/device/state", payload=STATE_RGB)
    state = await client_for(lamp, session).get_state()
    assert state == STATE_RGB
    call = lamp.calls[-1]
    assert call.headers["Authorization"] == TOKEN  # no "Bearer"


async def test_set_state_posts_fields_and_returns_lamp_answer(lamp: FakeLamp, session) -> None:
    answer = {**STATE_RGB, "brightness": 55}  # lamp answer differs from the request
    lamp.reply("POST", "/api/v1/device/state", payload=answer)
    result = await client_for(lamp, session).set_state(brightness=78, transition=2500)
    assert result == answer
    assert lamp.calls[-1].body == {"brightness": 78, "transition": 2500}


async def test_extra_fields_are_kept(lamp: FakeLamp, session) -> None:
    lamp.reply("GET", "/api/v1/device/state", payload={**STATE_RGB, "future_field": 7})
    assert (await client_for(lamp, session).get_state())["future_field"] == 7


async def test_info_and_settings(lamp: FakeLamp, session) -> None:
    lamp.reply("GET", "/api/v1/system/info", payload=INFO_RGB)
    lamp.reply("GET", "/api/v1/system/settings", payload=SETTINGS_COMPILED)
    client = client_for(lamp, session)
    assert await client.get_info() == INFO_RGB
    assert await client.get_settings() == SETTINGS_COMPILED


async def test_commands_use_nested_payload(lamp: FakeLamp, session) -> None:
    lamp.reply("PUT", "/api/v1/system/command", payload={"ok": True})
    client = client_for(lamp, session)
    await client.reboot()
    assert lamp.calls[-1].body == {"command": {"type": "reboot"}}
    lamp.reply("PUT", "/api/v1/system/command", status=202, payload={"status": "updating"})
    await client.fw_update("http://192.168.1.50:8123/api/ninlight/firmware/k3y")
    assert lamp.calls[-1].body == {
        "command": {
            "type": "fw_update",
            "url": "http://192.168.1.50:8123/api/ninlight/firmware/k3y",
        }
    }


async def test_401_is_auth_error(lamp: FakeLamp, session) -> None:
    lamp.reply("GET", "/api/v1/system/settings", status=401, payload={"error": "unauthorized"})
    with pytest.raises(NinlightAuthError):
        await client_for(lamp, session).get_settings()


async def test_409_is_busy_error_with_message(lamp: FakeLamp, session) -> None:
    lamp.reply(
        "PUT",
        "/api/v1/system/command",
        status=409,
        payload={"error": "an update is already running"},
    )
    with pytest.raises(NinlightBusyError) as err:
        await client_for(lamp, session).fw_update("http://192.168.1.50:8123/x")
    assert err.value.status == 409
    assert err.value.message == "an update is already running"


async def test_400_is_request_error_not_busy(lamp: FakeLamp, session) -> None:
    lamp.reply("POST", "/api/v1/device/state", status=400, payload={"error": "invalid brightness"})
    with pytest.raises(NinlightRequestError) as err:
        await client_for(lamp, session).set_state(brightness=0)
    assert not isinstance(err.value, NinlightBusyError)
    assert (err.value.status, err.value.message) == (400, "invalid brightness")


async def test_error_body_without_json_uses_raw_text(lamp: FakeLamp, session) -> None:
    lamp.reply("POST", "/api/v1/device/state", status=500, raw="boom")
    with pytest.raises(NinlightRequestError) as err:
        await client_for(lamp, session).set_state(on=True)
    assert err.value.message == "boom"


async def test_non_json_success_is_response_error(lamp: FakeLamp, session) -> None:
    lamp.reply("GET", "/api/v1/device/state", raw="<html>")
    with pytest.raises(NinlightResponseError):
        await client_for(lamp, session).get_state()


@pytest.mark.parametrize("missing", ["on", "brightness", "mode", "capabilities"])
async def test_state_without_required_field_is_response_error(
    lamp: FakeLamp, session, missing: str
) -> None:
    lamp.reply(
        "GET", "/api/v1/device/state", payload={k: v for k, v in STATE_RGB.items() if k != missing}
    )
    with pytest.raises(NinlightResponseError):
        await client_for(lamp, session).get_state()


@pytest.mark.parametrize("missing", ["mac", "device_type", "fw_version"])
async def test_info_without_required_field_is_response_error(
    lamp: FakeLamp, session, missing: str
) -> None:
    lamp.reply(
        "GET", "/api/v1/system/info", payload={k: v for k, v in INFO_RGB.items() if k != missing}
    )
    with pytest.raises(NinlightResponseError):
        await client_for(lamp, session).get_info()


async def test_timeout_is_connection_error(lamp: FakeLamp, session) -> None:
    lamp.reply("GET", "/api/v1/device/state", payload=STATE_RGB, delay=0.5)
    with pytest.raises(NinlightConnectionError):
        await client_for(lamp, session, timeout=0.05).get_state()


async def test_refused_connection_is_connection_error(session) -> None:
    client = NinlightClient(session, "127.0.0.1", TOKEN, port=1)
    with pytest.raises(NinlightConnectionError):
        await client.get_state()


async def test_host_property_returns_configured_host(session) -> None:
    client = NinlightClient(session, "192.168.2.22", TOKEN, port=3333)
    assert client.host == "192.168.2.22"


async def test_command_with_empty_response_body_succeeds(lamp: FakeLamp, session) -> None:
    lamp.reply("PUT", "/api/v1/system/command", status=204, raw="")
    await client_for(lamp, session).reboot()


async def test_error_body_json_without_error_field_uses_raw_text(lamp: FakeLamp, session) -> None:
    lamp.reply("POST", "/api/v1/device/state", status=500, payload={"detail": "bad brightness"})
    with pytest.raises(NinlightRequestError) as err:
        await client_for(lamp, session).set_state(on=True)
    assert "detail" in err.value.message


async def test_success_json_array_is_response_error(lamp: FakeLamp, session) -> None:
    lamp.reply("GET", "/api/v1/device/state", raw="[1, 2, 3]")
    with pytest.raises(NinlightResponseError):
        await client_for(lamp, session).get_state()