import asyncio
from ignis.services.backlight import BacklightService
from ignis.widgets import Widget

backlight = BacklightService.get_default()


class Brightness(Widget.Box):
    def __init__(self):
        super().__init__(
            visible=backlight.bind("available"),
            hexpand=True,
            style="margin-top: 0.25rem;",
            child=[
                Widget.Icon(
                    image="display-brightness-symbolic",
                    css_classes=["material-slider-icon"],
                    pixel_size=18,
                ),
                Widget.Scale(
                    min=0,
                    max=backlight.max_brightness,
                    hexpand=True,
                    value=backlight.bind("brightness"),
                    css_classes=["material-slider"],
                    on_change=lambda x: asyncio.create_task(backlight.set_brightness_async(x.value)),
                ),
            ],
        )