{
  flake,
  config,
  pkgs,
  lib,
  ...
}:
with lib; let
  psCfg = config.pub-solar;
  xdg = config.home-manager.users."${psCfg.user.name}".xdg;

  getIP6 = with pkgs; writeShellScriptBin "getIP" ''
    ${curl}/bin/curl -6 https://ipcheck-ds.wieistmeineip.de/callback/ | ${coreutils}/bin/tail -c +2 | ${coreutils}/bin/head -c -1 | ${jq}/bin/jq '.ip' -r
  '';
in {
  imports = [
    flake.self.nixosModules.ddclient
  ];

  services.ddclient = {
    enable = true;
    protocol = "dyndns1";
    domains = [
      "pie.b12f.io"
      "droppie.b12f.io"
    ];
    server = "ddns.hosting.de";
    username = "b12f";
    usev6 = "cmdv6, cmdv6=${getIP6}/bin/getIP";
    verbose = true;
    passwordFile = "/run/agenix/dyndns.key";
    interval = "1min";
  };

  age.secrets."dyndns.key" = {
    file = "${flake.self}/secrets/dyndns.key";
    mode = "400";
    owner = "root";
  };
}