{
  config,
  lib,
  pkgs,
  modulesPath,
  ...
}: {
  imports = [];
  options.x = {
    zulip = {
      enable = true;
      admin_email = lib.mkOption {
        type = lib.types.str;
        default = "admin+zulip@${config.networking.domain}";
      };
      integration = {
        persistance.enable = lib.mkOption {
          type = lib.types.bool;
          description = "whether persistance is enabled";
          default = lib.mkDefault false;
        };
        mailserver.enable = lib.mkOption {
          type = lib.types.bool;
          description = "creates simple-nixos-mailserver login automatically for admin user";
        };
      };
    };
  };
  config = let
    cfg = config.x.zulip;
  in
    lib.mkIf cfg.enable {
      services.zulip = {
        enable = true;
        host = "zulip.${config.networking.domain}";
        camoKeyFile = builtins.toString config.age.secrets.zulip-camoKey.path;
        rabbitmqPasswordFile = builtins.toString config.age.secrets.zulip-rabbitmqPassword.path;
        secretKeyFile = builtins.toString config.age.secrets.zulip-secretKey.path;
        sharedSecretKeyFile = builtins.toString config.age.secrets.zulip-sharedSecretKey.path;
        avatarSaltKeyFile = builtins.toString config.age.secrets.zulip-avatarSaltKey.path;
        zulipSettings = {
          ZULIP_ADMINISTRATOR = cfg.admin_email;
          EXTERNAL_HOST = "chat.${config.networking.domain}";
        };
      };
      services.mailserver.loginAccounts = lib.mkIf cfg.integration.mailserver.enable {
        "admin+zulip@${config.networking.domain}" = {
          hashedPasswordFile = builtins.toString config.age.secrets.secret3.path;
        };
      };
    };
}