{ pkgs, lib, ... }:

with lib;

let
  xbacklightCmd = "${pkgs.xorg.xbacklight}/bin/xbacklight";
  lightLevel = 10;
in
{
  services.xidlehook = {
    enable = true;
    not-when-audio = true;
    not-when-fullscreen = true;
    timers = [
      {
        command = "${xbacklightCmd} -get > /tmp/xbacklight_v && ${xbacklightCmd} -set ${toString lightLevel}";
        canceller = "${xbacklightCmd} -set $(cat /tmp/xbacklight_v || echo 100)";
        delay = 30;
      }
    ];
  };
}