#!/bin/bash
set -e

# Adjust the brightness on Apple Studio Displays and Apple XDR Displays using asdcontrol.

if (( $# == 0 )); then
  echo "Adjust Apple Display Brightness by passing +5000 or -5000 (or any range from 0-60000)"
else
  device="$(sudo asdcontrol --detect /dev/usb/hiddev* | grep ^/dev/usb/hiddev | cut -d: -f1)"
  sudo asdcontrol "$device" -- "$1" >/dev/null
  value="$(sudo asdcontrol "$device" | awk -F= '/BRIGHTNESS=/{print $2+0}')"
  nomarchy-swayosd-brightness "$(( value * 100 / 60000 ))"
fi