{ config, pkgs, lib, ... }:

{
  # Udev rules for battery optimizations
  services.udev.extraRules = ''
    # Reduce brightness to 40% when switching to battery
    SUBSYSTEM=="power_supply", ATTR{online}=="0", RUN+="${pkgs.light}/bin/light -S 40"

    # AMD GPU power management - force battery profile when unplugged
    SUBSYSTEM=="power_supply", ATTR{online}=="0", RUN+="${pkgs.bash}/bin/bash -c 'echo battery > /sys/class/drm/card*/device/power_dpm_force_performance_level'"

    # AMD GPU power management - auto when plugged in
    SUBSYSTEM=="power_supply", ATTR{online}=="1", RUN+="${pkgs.bash}/bin/bash -c 'echo auto > /sys/class/drm/card*/device/power_dpm_force_performance_level'"
  '';
}