#!/bin/sh

lower_battery_threshold=10
KBD="";
oldKBD="";
intern="eDP";
extern="HDMI-A-0";

function kb_routine {
  oldKBD="$KBD";
  case "$(xset -q | grep -A 0 'LED' | cut -c59-67)" in
    "00000000") 
      KBD="Europe" ;;
    "00001000") 
      KBD="Deutsch" ;;
    *) KBD="unknown" ;;
  esac

  if [ "$KBD" != "$oldKBD" ]; then
    dunstify -r 1 "$KBD";
  fi

}

function battery_routine {
  capacity=$(< /sys/class/power_supply/BAT0/capacity)
  if [[ $capacity -lt lower_battery_threshold ]]; then
    acpi | grep -q '0: Discharging' && dunstify "Battery at $capacity%";
    sleep 60;
  fi
}


function monitor {
  oldmonstats="$monstats"
  if xrandr | grep "$extern disconnected"; then
    monstats="$intern"
    xrandr --output "$extern" --off --output "$intern" --auto
  else
    monstats="$extern"
    xrandr --output "$intern" --off --output "$extern" --auto
  fi

  if [ "$oldmonstats" != "$monstats" ]; then
    dunstify -r 1 "Using $monstats.";
  fi
}
while :
do
  kb_routine;
  battery_routine;
  monitor;
  sleep 1;
done