{ pkgs, lib, ... }:

with lib;

let
  xbacklightCmd = "${pkgs.xorg.xbacklight}/bin/xbacklight";
  lightLevel = 10;
  package = pkgs.writeScriptBin "xidlehook" ''
    ${pkgs.xidlehook}/bin/xidlehook --detect-sleep "$@"
  '';
  saveLightLevel = "${xbacklightCmd} -get > /run/user/$UID/xbacklight_v";
  lowerLight = "${xbacklightCmd} -set ${toString lightLevel}";
  resetLight = "${xbacklightCmd} -set $(</run/user/$UID/xbacklight_v) || ${xbacklightCmd} -set 100";
in
{
  services.xidlehook = {
    inherit package;
    enable = true;
    # not-when-audio = true;
    not-when-fullscreen = true;
    timers = [
      {
        command = "${saveLightLevel} && ${lowerLight}";
        canceller = resetLight;
        delay = 60;
      }
      {
        command = "${pkgs.lockscreen}/bin/lockscreen";
        canceller = resetLight;
        delay = 120;
      }
    ];
  };
}