from dataclasses import asdict, dataclass
from typing import Any, Mapping


def _is_on(value: Any) -> bool:
    return value == "on"


@dataclass(frozen=True, slots=True)
class TionState:
    power: bool
    heater: bool
    heating: bool
    sound: bool
    mode: str

    out_temp: int
    in_temp: int
    target_temp: int

    fan_speed: int
    filter_remain: float

    device_time: str
    request_error_code: int
    model: str

    light: bool | None = None

    @classmethod
    def from_raw(cls, data: Mapping[str, Any]) -> "TionState":
        light_raw = data.get("light")

        return cls(
            power=_is_on(data["state"]),
            heater=_is_on(data["heater"]),
            heating=_is_on(data["heating"]),
            sound=_is_on(data["sound"]),
            mode=str(data["mode"]),

            out_temp=int(data["out_temp"]),
            in_temp=int(data["in_temp"]),
            target_temp=int(data["heater_temp"]),

            fan_speed=int(data["fan_speed"]),
            filter_remain=float(data["filter_remain"]),

            device_time=str(data["time"]),
            request_error_code=int(data["request_error_code"]),
            model=str(data["model"]),

            light=None if light_raw is None else _is_on(light_raw),
        )

    def to_dict(self) -> dict:
        return asdict(self)