significant_change.py

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"""Helper to test significant Light state changes."""
 
from __future__ import annotations
 
from typing import Any
 
from homeassistant.core import HomeAssistant, callback
from homeassistant.helpers.significant_change import check_absolute_change
 
from . import ATTR_BRIGHTNESS, ATTR_COLOR_TEMP, ATTR_EFFECT, ATTR_HS_COLOR
 
 
@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(ATTR_EFFECT) != new_attrs.get(ATTR_EFFECT):
        return True
 
    old_color = old_attrs.get(ATTR_HS_COLOR)
    new_color = new_attrs.get(ATTR_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(ATTR_BRIGHTNESS), new_attrs.get(ATTR_BRIGHTNESS), 3
    ):
        return True
 
    if check_absolute_change(
        # Default range 153..500
        old_attrs.get(ATTR_COLOR_TEMP),
        new_attrs.get(ATTR_COLOR_TEMP),
        5,
    ):
        return True
 
    return False