{
  pkgs,
  config,
  lib,
  inputs,
  ...
}: let
  nixservice = "podman-valheim";
  service = "valheim";
  cfg = config.homelab.${service};
  sec = config.sops.secrets;
  homelab = config.homelab;
in {
  options.homelab.${service} = {
    enable = lib.mkEnableOption "enables ${service}";
    # set port options
    port = lib.mkOption {
      type = lib.types.int;
      default = 7704;
      description = "set port for ${service} (default: ${toString cfg.port}";
    };
    url = lib.mkOption {
      type = lib.types.str;
      default = "${service}.${homelab.base_domain}";
      description = "set domain for ${service}";
    };
    data_dir = lib.mkOption {
      type = lib.types.str;
      default = "/var/lib/${service}";
      description = "set data directory for ${service}";
    };
    ids = lib.mkOption {
      type = lib.types.int;
      default = cfg.port;
      description = "set uid and pid of ${service} user (matches port by default)";
    };
    backup = lib.mkOption {
      type = lib.types.bool;
      default = false;
      description = "enable backups for ${service}";
    };
    motd_gs = lib.mkOption {
      type = lib.types.nullOr lib.types.str;
      default = ["craftoria"];
    };
    backup_repo = lib.mkOption {
      type = lib.types.path;
      default = "/var/backup/gameservers/valheim";
      description = "path to take hourly backups to with borg!";
    };
    offsite_user = lib.mkOption {
      type = lib.types.str;
      default = "lifeboat";
      description = "user to connect to offsite host with";
    };
    offsite_target = lib.mkOption {
      type = lib.types.str;
      default = "lifeboat.holocron.blue";
      description = "ip or domain for offsite backups";
    };
    offsite_dir = lib.mkOption {
      type = lib.types.str;
      default = "lifeboat/holocron/archives/gameservers";
      description = "path to rsync offsite backups to";
    };
  };

  config = lib.mkIf cfg.enable {
    # declare ${service} group
    users.groups.${service} = {gid = lib.mkForce cfg.ids;};

    # declare ${service} user
    users.users.${service} = {
      description = "${service} server user";
      uid = lib.mkForce cfg.ids;
      isSystemUser = true;
      home = cfg.data_dir;
      createHome = true;
      group = service;
      extraGroups = [];
    };

    virtualisation.oci-containers.containers = {
      hass = {
        image = "homeassistant/home-assistant:stable";
        autoStart = true;
        extraOptions = [
          "--pull=newer"
          "--network=host"
        ];
        volumes = [
          "${cfg.data_dir}:/config"
        ];
        environment = {
          TZ = homelab.tz;
          PUID = toString config.users.users.${service}.uid;
          PGID = toString config.users.groups.${service}.gid;
        };
      };
    };

    # override umask to make permissions work out
    systemd.services.${service}.serviceConfig = {
      UMask = lib.mkForce "0007";
    };

    # open firewall
    networking.firewall.allowedTCPPorts = [cfg.port 8123 21063 21064];
    networking.firewall.allowedUDPPorts = [5353];

    # add to caddy for reverse proxy
    services.caddy.virtualHosts."${cfg.url}" = {
      serverAliases = ["${service}.${homelab.public_domain}"];
      extraConfig = ''
        tls internal
        reverse_proxy 127.0.0.1:${toString cfg.port} {
        }
      '';
    };

    # backups valhiem with borg!
    services.borgbackup.jobs.${service} = {
      archiveBaseName = service;
      repo = cfg.backup_repo;
      paths = lib.flatten (
        lib.attrValues (
          lib.mapAttrs (_: srv:
            [srv.data_dir]
            ++ (
              if builtins.hasAttr "db_dump" srv
              then [srv.db_dump]
              else []
            ))
          servers
        )
      );
      compression = "auto,zstd";
      #preHook = "systemctl start mysql-backup.service";
      postHook = ''
        ${pkgs.sshpass}/bin/sshpass -f ${sec."lifeboat_rsync".path} \
          ${pkgs.rsync}/bin/rsync -aHAX --partial --numeric-ids --info=progress2,name1,stats2 --delete \
          -e "ssh -o StrictHostKeyChecking=no" \
          ${toString cfg.backup_repo} \
          ${cfg.offsite_user}@${cfg.offsite_target}::${cfg.offsite_dir}
      '';
      startAt = "*-*-* *:00:00";
      group = "archives";
      encryption.mode = "repokey-blake2";
      encryption.passCommand = "cat ${config.sops.secrets."borg_passwd".path}";
      extraArgs = ["--verbose" "--show-rc" "--umask" "0007"];
      extraCreateArgs = ["--list" "--stats" "--filter" "AME"];
      prune.keep = {
        within = "1d"; # Keep all archives from the last day
        hourly = 24;
        daily = 7;
        weekly = 12;
        monthly = -1; # Keep at least one archive for each month
      };
    };
  };
}