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

with lib;

let
  cfg = config.services.ubino;

in {

  options.services.ubino = {
    enable = mkEnableOption "Ubino: assistente virtuale di Ube, sottoforma di bot di Telegram.";

    user = mkOption {
      type = types.str;
      default = "ubino";
      description = ''
        Ubino will be run under this user (user will be created if it doesn't exist.
        This can be your user name).
      '';
    };

  };

  config = mkIf cfg.enable {

    users.groups.ubino = {};

    users.extraUsers."${cfg.user}" = {
      isSystemUser = true;
      group = "ubino";
      description = "Ubino user";
    };

    systemd.services.ubino = {
      description = "Ubino: assistente virtuale di Ube, sottoforma di bot di Telegram.";
      after = [ "network.target" ];
      wantedBy = [ "multi-user.target" ];

      serviceConfig = {
        User      = cfg.user;
        Group     = "ubino";
        ExecStart = "${pkgs.openjdk}/bin/java -jar UbinoBot.jar";
        Restart   = "always";
        StateDirectory = "ubino";
        WorkingDirectory = "%S/ubino";
      };

    };

  };

}