{ config, lib, ... }:
let
  cfg = config.xdg;
in
{
  options.xdg =
    with lib;
    with types;
    {
      relativeCacheHome = mkOption {
        type = str;
        default = ".cache";
        description = "Relative path to directory holding application caches.";
      };

      cacheHome = mkOption { default = "${config.home.homeDirectory}/${cfg.relativeCacheHome}"; };

      relativeConfigHome = mkOption {
        type = str;
        default = ".config";
        description = "Relative path to directory holding application configurations.";
      };

      configHome = mkOption { default = "${config.home.homeDirectory}/${cfg.relativeConfigHome}"; };

      relativeDataHome = mkOption {
        type = str;
        default = ".local/share";
        description = "Relative path to directory holding application data.";
      };

      dataHome = mkOption { default = "${config.home.homeDirectory}/${cfg.relativeDataHome}"; };

      relativeStateHome = mkOption {
        type = str;
        default = ".local/state";
        description = "Relative path to directory holding application states.";
      };

      stateHome = mkOption { default = "${config.home.homeDirectory}/${cfg.relativeStateHome}"; };
    };
}