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

let
  # Use the default user from host.nix or fallback
  username = config.defaultUser or "henrov";
in
{
  #################################
  # System-wide Thunar installation
  #################################
  environment.systemPackages = with pkgs; [
    thunar                  # main file manager
    thunar-archive-plugin   # zip, tar, rar, 7z support
    thunar-volman           # auto-mount removable drives
    gvfs                    # support for external drives and network shares
    xarchiver               # optional GUI archive manager
  ];

  #################################
  # Home Manager integration for the user
  #################################
  home-manager.users = lib.recursiveUpdate (config.home-manager.users or {}) {
    "${username}" = {
      home.stateVersion = "26.05";  # required by Home Manager

      # Environment variables
      home.sessionVariables = {
        FILE_MANAGER = "thunar";
        USERNAME     = username;
      };
    };
  };
}