# taken and adapted https://github.com/miniMinn24/Battery_Notify with MIT License
{
  writeShellApplication,
  mplayer,
  brightnessctl,
  ...
}: let
  NotifySound = ../../assets/battery_notify.mp3;
in
  writeShellApplication {
    name = "custom-batterynotify";
    runtimeInputs = [
      mplayer
      brightnessctl
    ];
    text = ''

      # Delay for startup
      sleep 5

      # Change your sound path here

      playsound() {
          mplayer ${NotifySound}
      }

      adjustBrightness() {
          local adjustment="$1"
          brightnessctl set "$adjustment"
      }

      sendNotification() {
          local title="$1"
          local message="$2"
          notify-send -h string:x-canonical-private-synchronous:sys-notify -e -u low "$title" "$message"
      }

      # Runs full time in background
      x=0
      while true; do
          Battery_Status="$(\cat /sys/class/power_supply/BAT*/status)"
          Battery_Capacity=$(\cat /sys/class/power_supply/BAT*/capacity)

          case "$Battery_Status" in
              "Discharging")
                  if [ $x -eq 1 ]; then
                      sendNotification "Discharging" "Remains: <b>''${Battery_Capacity}%</b>"
                      adjustBrightness "15%-"
                      playsound
                      x=0
                  fi
                  ;;
              "Charging")
                  if [ $x -eq 0 ]; then
                      sendNotification "Charging" "Current: <b>''${Battery_Capacity}%</b>"
                      adjustBrightness "15%+"
                      playsound
                      x=1
                  fi
                  ;;
              "Full")
                  if [ $x -eq 0 ]; then
                      sendNotification "Fully Charged" "Noice: <b>''${Battery_Capacity}%</b>"
                      playsound
                      x=1
                  fi
                  ;;
          esac

          sleep 1
      done
    '';
  }