{ lib, ... }:
let
  inherit (lib) mkOption types;
  bgs = {
    wallpaper_1 = "~/media/images/bg_1.jpg";
    wallpaper_2 = "~/media/images/bg_2.jpg";
    wallpaper_3 = "~/media/images/bg_3.jpg";
    wallpaper_4 = "~/media/images/waterwindow.jpg";
    wallpaper_5 = "~/media/images/barngreet.png";
  };
  bgList = builtins.attrNames bgs;
in
{
  options.settings.theme = {
    background = {
      lockscreen = mkOption {
        type = types.enum bgList;
        apply = name: bgs.${name};
        example = "wallpaper_1";
      };
      primary = mkOption {
        type = types.enum bgList;
        apply = name: bgs.${name};
        example = "wallpaper_2";
      };
      secondary = mkOption {
        type = types.nullOr (types.enum bgList);
        default = null;
        apply = name: if name == null then null else bgs.${name};
        example = "wallpaper_3";
      };
    };
  };
}