from types import SimpleNamespace

from app.auto.controller import AutoController


class FakeQingpingService:

    def __init__(
        self,
        online: bool,
        temperature,
    ):
        self.online = online

        self.state = SimpleNamespace(
            temperature=temperature,
        )


class FakeTionService:

    def __init__(
        self,
        online: bool,
        in_temp,
    ):
        self.online = online

        self.state = SimpleNamespace(
            in_temp=in_temp,
        )


def make_controller(
    *,
    qingping_online: bool,
    qingping_temperature,
    tion_online: bool,
    tion_temperature,
):

    qingping = FakeQingpingService(
        online=qingping_online,
        temperature=qingping_temperature,
    )

    tion = FakeTionService(
        online=tion_online,
        in_temp=tion_temperature,
    )

    return AutoController(
        schedule_service=None,
        qingping_service=qingping,
        tion_service=tion,
    )


def test_qingping_priority():

    controller = make_controller(
        qingping_online=True,
        qingping_temperature=19.7,
        tion_online=True,
        tion_temperature=18,
    )

    temperature, source = (
        controller._get_temperature()
    )

    assert temperature == 19.7
    assert source == "qingping"


def test_tion_fallback():

    controller = make_controller(
        qingping_online=False,
        qingping_temperature=19.7,
        tion_online=True,
        tion_temperature=18,
    )

    temperature, source = (
        controller._get_temperature()
    )

    assert temperature == 18
    assert source == "tion"


def test_tion_fallback_when_qingping_temperature_missing():

    controller = make_controller(
        qingping_online=True,
        qingping_temperature=None,
        tion_online=True,
        tion_temperature=18,
    )

    temperature, source = (
        controller._get_temperature()
    )

    assert temperature == 18
    assert source == "tion"


def test_offline_tion_is_not_used():

    controller = make_controller(
        qingping_online=False,
        qingping_temperature=None,
        tion_online=False,

        # Значение специально оставляем.
        # Оно имитирует старый state Tion.
        tion_temperature=18,
    )

    temperature, source = (
        controller._get_temperature()
    )

    assert temperature is None
    assert source is None


def test_missing_tion_temperature():

    controller = make_controller(
        qingping_online=False,
        qingping_temperature=None,
        tion_online=True,
        tion_temperature=None,
    )

    temperature, source = (
        controller._get_temperature()
    )

    assert temperature is None
    assert source is None


def main():

    test_qingping_priority()

    test_tion_fallback()

    test_tion_fallback_when_qingping_temperature_missing()

    test_offline_tion_is_not_used()

    test_missing_tion_temperature()

    print()
    print("=" * 70)
    print(
        "ALL AUTO TEMPERATURE SOURCE "
        "TESTS PASSED"
    )
    print("=" * 70)


if __name__ == "__main__":
    main()