nixos-config/modules/services/gamemode/default.nix

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

let
  cfg = config.ptw.services.gamemode;
in {
  options.ptw.services.gamemode = {
    enable = lib.mkEnableOption "Enable and configure gamemode";
  };

  config = lib.mkIf cfg.enable {
    programs.gamemode = {
      enable = true;
      enableRenice = true;
      settings = {
        general = {
          reaper_freq = 5;
          desiredgov = "performance";
          igpu_desiredgov = "powersave";
          igpu_power_threshold = 0.3;

          softrealtime = "on";
          renice = 0;
          ioprio = 0;
          inhibit_screensaver = 1;
        };

        gpu = {
          amd_performance_level = "high";
        };

        custom = let
          razerBrightnessStartScript = pkgs.writeShellScriptBin "razer-brightness-start.sh" ''
            ${pkgs.razer-cli}/bin/razer-cli -d "Razer BlackWidow Ultimate 2013" -b 1
            ${pkgs.razer-cli}/bin/razer-cli -d "Razer Tartarus V2" -b 50
          '';
          razerBrightnessStopScript = pkgs.writeShellScriptBin "razer-brightness-stop.sh" ''
            ${pkgs.razer-cli}/bin/razer-cli -d "Razer BlackWidow Ultimate 2013" -b 0
            ${pkgs.razer-cli}/bin/razer-cli -d "Razer Tartarus V2" -b 0
          '';
        in {
          start = ''${razerBrightnessStartScript}/bin/razer-brightness-start.sh'';
          end = ''${razerBrightnessStopScript}/bin/razer-brightness-stop.sh'';
        };
      };
    };
  };
}