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

let
  enableProgram = config.enableThunar or false;
  username = config.defaultUser or "henrov";
in
{
  # Top-level toggle
  options.enableThunar = lib.mkEnableOption "Enable Thunar file manager";

  # Only apply config if enabled
  config = lib.mkIf enableProgram {
    # Install Thunar and related packages system-wide
    environment.systemPackages = [
      pkgs.thunar
      pkgs.thunar-plugins
      pkgs.xarchiver
    ];

    # Remove invalid top-level 'home' reference
    # If you want sessionVariables, define them in Home Manager instead
    # Example for Home Manager:
    # home-manager.users.${username}.sessionVariables = {
    #   FILE_MANAGER = "thunar";
    #   USERNAME = username;
    # };
  };
}