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

with lib;
let cfg = config.awful.systems.maint-mode;
in {
  options.awful.systems.maint-mode = {
    enable = mkEnableOption (mdDoc ''
      Whether to configure nginx to display the maintenance mode route as default.
    '');
    virtualHost = mkOption {
      type = types.str;
      description = lib.mdDoc
        "The nginx virtualHost to show the maintenance mode route for.";
    };
  };

  config = mkIf cfg.enable {
    services.nginx = {
      enable = true;
      virtualHosts."${cfg.virtualHost}" = {
        root = mkForce (pkgs.callPackage ./site.nix { });
      };
    };

    networking.firewall.allowedTCPPorts = [ 80 ];
  };
}