#!/bin/sh

monitor=$(xrandr --query | grep -i '\sconnected' | grep '[0-9]x[0-9]' | grep -i 'primary' | cut -d ' ' -f1)
[ -z "$monitor" ] && monitor=$(xrandr --query | grep -i '\sconnected' | grep '[0-9]x[0-9]' | cut -d ' ' -f1)
case "$monitor" in
*DP* | *HDMI*)
  current_brightness=$(xrandr --verbose | grep -i "^$monitor connected" -A5 | grep -i "Brightness:" | cut -d ' ' -f2)
  current_brightness=$(printf "%.0f\n" "$(echo "$current_brightness * 100" | bc -l)")
  ;;
esac

case $BLOCK_BUTTON in
3) notify-send "🔆 Backlight module
- Scroll up & down changes screen brightness
- Shift + Scroll up & down changes monitor backlight" ;;
4) pkexec brillo -A 5 -q ;;
5) pkexec brillo -U 5 -q ;;
6) setsid -f "$TERMINAL" -e "$EDITOR" "$0" ;;
7) monbright -inc 5 ;;
8) monbright -dec 5 ;;
9) setsid -f "$TERMINAL" -e "$EDITOR" "$0" ;;
esac

if [ -r /sys/class/backlight/*/brightness ]; then
  curr_brightness=$(cat /sys/class/backlight/*/brightness)
  max_brightness=$(cat /sys/class/backlight/*/max_brightness)
  brightness_per=$((100 * curr_brightness / max_brightness))
  printf "%s %s\n" "💡${brightness_per}%" "🪟$current_brightness"
else
  printf "%s\n" "🪟$current_brightness"
fi