"""Helper to test significant Light state changes."""

from typing import Any

from homeassistant.core import HomeAssistant, callback
from homeassistant.helpers.significant_change import check_absolute_change

from .const import LightEntityStateAttribute


@callback
def async_check_significant_change(
    hass: HomeAssistant,
    old_state: str,
    old_attrs: dict,
    new_state: str,
    new_attrs: dict,
    **kwargs: Any,
) -> bool | None:
    """Test if state significantly changed."""
    if old_state != new_state:
        return True

    if old_attrs.get(LightEntityStateAttribute.EFFECT) != new_attrs.get(
        LightEntityStateAttribute.EFFECT
    ):
        return True

    old_color = old_attrs.get(LightEntityStateAttribute.HS_COLOR)
    new_color = new_attrs.get(LightEntityStateAttribute.HS_COLOR)

    if old_color and new_color:
        # Range 0..360
        if check_absolute_change(old_color[0], new_color[0], 5):
            return True

        # Range 0..100
        if check_absolute_change(old_color[1], new_color[1], 3):
            return True

    if check_absolute_change(
        old_attrs.get(LightEntityStateAttribute.BRIGHTNESS),
        new_attrs.get(LightEntityStateAttribute.BRIGHTNESS),
        3,
    ):
        return True

    if check_absolute_change(
        # Default range 2000..6500
        old_attrs.get(LightEntityStateAttribute.COLOR_TEMP_KELVIN),
        new_attrs.get(LightEntityStateAttribute.COLOR_TEMP_KELVIN),
        50,
    ):
        return True

    return False