#!/usr/bin/env sh
######################################################################
# @author : swytch
# @file : kbacklight
# @license : MIT
# @created : Wednesday May 20, 2020 18:17:03 CEST
#
# @description : control keyboard brightness
# @dependencies : `upower`
max=$(cat /sys/class/leds/tpacpi::kbd_backlight/max_brightness)
current=$(cat /sys/class/leds/tpacpi::kbd_backlight/brightness)
new=$(expr $current + 1)
setKeyboardLight () {
dbus-send --system --type=method_call --dest="org.freedesktop.UPower" "/org/freedesktop/UPower/KbdBacklight" "org.freedesktop.UPower.KbdBacklight.SetBrightness" int32:$1
}
[ $new -gt $max ] && new=0
setKeyboardLight $new