#!/bin/sh

lower_battery_threshold=10
KBD=""
oldKBD=""
connected_monitors=""
old_connected_monitors=""
internal_monitor="eDP"

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

}

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

monitors() {
  connected_monitors=$(xrandr | grep -c "\<connected\>")
  if [ "$connected_monitors" != "old_connected_monitors" ]; then
    if [ "$connected_monitors" -eq 1 ]; then
      # dunstify -r 1 "Swichting to single monitor"
      xrandr --output $internal_monitor --auto
    fi
    if [ "$connected_monitors" -gt 1 ]; then
      external_monitor=$(xrandr | grep "\<connected\>" | grep -v $internal_monitor | cut -d" " -f1)
      # dunstify -r 1 "Swichting to external monitor"
      xrandr --output $internal_monitor --off --output "$external_monitor" --auto
    fi
    old_connected_monitors=$connected_monitors
  fi
}

while :; do
  kb_routine
  battery_routine
  # monitors
  sleep 1
done