{ lib, ... }:
let
  serv = import ../config/services.nix;
  gtnh = serv.gtnh;
  minecraftUid = 2000;
  minecraftGid = 2000;
  gtnhEnvironment = {
    EULA = "TRUE";
    TYPE = "FORGE";
    VERSION = gtnh.version;
    GENERIC_PACK = gtnh.serverPackUrl;
    LOAD_ENV_FROM_GENERIC_PACK = "true";
    REMOVE_OLD_MODS = "TRUE";
    MEMORY = gtnh.memory;
    USE_AIKAR_FLAGS = "true";
    TZ = gtnh.timezone;
    UID = toString minecraftUid;
    GID = toString minecraftGid;
  };
in {
  virtualisation.docker.enable = true;

  users.groups.minecraft.gid = minecraftGid;

  users.users.minecraft = {
    isSystemUser = true;
    group = "minecraft";
    home = "/var/lib/minecraft";
    createHome = true;
    uid = minecraftUid;
  };

  networking.firewall.allowedTCPPorts = [ gtnh.port ];

  virtualisation.oci-containers.containers.gtnh = {
    image = "itzg/minecraft-server:java21";
    autoStart = true;

    ports = [
      "${toString gtnh.port}:${toString gtnh.port}"
    ];

    volumes = [
      "/var/lib/minecraft:/data"
    ];

    environment = gtnhEnvironment;
  };
}