{ pkgs, ... }:
{
  systemd.timers."batterylight" = {
    wantedBy = [ "timers.target" ];
    timerConfig = {
      OnBootSec = "5m";
      OnUnitActiveSec = "5m";
      Unit = "batterylight.service";
    };
  };

  systemd.services."batterylight" = {
    script = ''
      STATUS=`cat /sys/bus/acpi/drivers/battery/PNP0C0A:00/power_supply/BAT1/status`
      PERCENT=`cat /sys/bus/acpi/drivers/battery/PNP0C0A:00/power_supply/BAT1/capacity`
      if [[ $STATUS == "Discharging" && $PERCENT -lt 10 ]]; then
        for i in `seq 0 3`; do
          ${pkgs.framework-tool}/bin/framework_tool --kblight 0
          sleep 0.2
          ${pkgs.framework-tool}/bin/framework_tool --kblight 100
          sleep 0.2
          ${pkgs.framework-tool}/bin/framework_tool --kblight 0
          sleep 0.2
        done
      fi
    '';
    serviceConfig = {
      Type = "oneshot";
      User = "root";
    };
  };
}