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

let
  cfg = config.ptw.services.key-mapper;
in {
  options.ptw.services.key-mapper = {
    enable = lib.mkEnableOption "Enable the key-mapper service and install it";
  };

  config = lib.mkIf cfg.enable {
    # TODO: Assert that uinput is in kernelModules
    services.udev = {
      packages = with pkgs; [ key-mapper ];
      extraRules = ''
        KERNEL=="uinput", GROUP="input", MODE="0660"
      '';
    };

    environment.systemPackages = [
      pkgs.key-mapper # Custom package
    ];
    
    systemd.user.services.key-mapper = {
      description = "A tool to change the mapping of your input device buttons";
      wantedBy = [ "default.target" ];
      serviceConfig = {
        Type = "simple";
        ExecStart = "${pkgs.key-mapper}/bin/key-mapper-service";
        Restart = "always";
        # NOTE: The Tartarus may not be connected, so don't fail if we cannot set the preset
        ExecPostStart = "${pkgs.key-mapper}/bin/key-mapper --command start --preset NOOP --device \"Razer Razer Tartarus V2\"; exit 0";
      };
    };
  };
}