{
  config,
  pkgs,
  lib,
  ...
}: let
  inherit (lib) mkEnableOption mkOption types;

  cfg = config.services.wa2k;
in {
  options.services.wa2k = {
    enable = mkEnableOption "webserver for wa2k.com";

    port = mkOption {
      type = types.port;
      default = 8080;
      example = 8080;
      description = ''
        The listening port on localhost to bind the wa2k.com server to.
      '';
    };

    openFirewall = mkOption {
      type = types.bool;
      default = false;
      example = true;
      description = ''
        Whether the wa2k listening port should be automatically opened in the system's firewall.
      '';
    };
  };

  config = {
    networking.firewall.allowedTCPPorts = lib.optional (cfg.enable && cfg.openFirewall) cfg.port;

    # REF: https://nixos.wiki/wiki/Static_Web_Server
    services.static-web-server = {
      enable = cfg.enable;
      listen = "[::]:${builtins.toString cfg.port}";
      root = "${pkgs.wa2k-website}/www";

      configuration = {
        general = {
          directory-listing = false;
        };
      };
    };
  };
}