{ pkgs, ... }:
{
  users.users.guandanbtw = {
    isSystemUser = true;
    group = "guandanbtw";
    home = "/var/lib/guandanbtw";
    createHome = true;
  };
  users.groups.guandanbtw = {};

  systemd.services.guandanbtw = {
    description = "Guandan card game";
    wantedBy = [ "multi-user.target" ];
    after = [ "network.target" ];
    serviceConfig = {
      ExecStart = "/www/sites/guandanbtw/server/bin/guandanbtw";
      WorkingDirectory = "/www/sites/guandanbtw/server";
      Restart = "always";
      User = "guandanbtw";
      Group = "guandanbtw";
    };
  };

  services.nginx.virtualHosts."guandan.dev" = {
    enableACME = true;
    forceSSL = true;
    root = "/www/sites/guandanbtw/client/dist";
    locations."/" = {
      tryFiles = "$uri $uri/ /index.html";
    };
    locations."/ws" = {
      proxyPass = "http://127.0.0.1:8080";
      proxyWebsockets = true;
    };
  };
}