{ config, pkgs, lib, ... }:
let
  agenix = builtins.fetchTarball {
    url = "https://github.com/ryantm/agenix/archive/daf42cb35b2dc614d1551e37f96406e4c4a2d3e4.tar.gz";
    sha256 = "0gbn01hi8dh7s9rc66yawnmixcasadf20zci4ijzpd143ph492ad";
  };
in {
  imports =
    [ # Include the results of the hardware scan.
      ./hardware-configuration.nix
      "${agenix}/modules/age.nix"
      ../modules/spigot-server.nix
      ../modules/ionos-dyndns.nix
    ];

  # Use the GRUB 2 boot loader.
  boot.loader.grub.enable = true;
  # boot.loader.grub.efiSupport = true;
  # boot.loader.grub.efiInstallAsRemovable = true;
  # boot.loader.efi.efiSysMountPoint = "/boot/efi";
  # Define on which hard drive you want to install Grub.
  boot.loader.grub.device = "/dev/sda";

  networking.hostName = "gilgamesh"; # Define your hostname.
  # Pick only one of the below networking options.
  # networking.wireless.enable = true;  # Enables wireless support via wpa_supplicant.
  # networking.networkmanager.enable = true;  # Easiest to use and most distros use this by default.

  # Set your time zone.
  time.timeZone = "Europe/Berlin";

  # Configure network proxy if necessary
  # networking.proxy.default = "http://user:password@proxy:port/";
  # networking.proxy.noProxy = "127.0.0.1,localhost,internal.domain";

  # Select internationalisation properties.
  i18n.defaultLocale = "en_US.UTF-8";
  console = {
    font = "Lat2-Terminus16";
    keyMap = "de-latin1";
  };

  # Define a user account. Don't forget to set a password with ‘passwd’.
  users.users.paul = {
    isNormalUser = true;
    extraGroups = [ "wheel" ]; # Enable ‘sudo’ for the user.
    openssh.authorizedKeys.keys = [
      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIIMFqREiw3EareYXntIrm1/numKDo113zx1WMOFO69LJ paul"
    ];
    # packages = with pkgs; [];
  };

  # Users in group wheel may sudo without password
  security.sudo.wheelNeedsPassword = false;

  # Users in group wheel are special friends of the Nix daemon
  nix.settings.trusted-users = [
    "@wheel"
  ];

  # List packages installed in system profile. To search, run:
  # $ nix search wget
  environment.systemPackages = with pkgs; [
    vim
    tmux
    bottom
    (pkgs.callPackage ../packages/ionos-dyndns.nix {})
  ];

  # List services that you want to enable:

  # Enable the OpenSSH daemon.
  services.openssh = {
    enable = true;
    settings = {
      PasswordAuthentication = false;
      KbdInteractiveAuthentication = false;
    };
  };

  # Enable Avahi for mDNS (advertise hostname in LAN)
  services.avahi = {
    enable = true;
    nssmdns = true;
  };

  services.spigot-server = {
    enable = true;
    user = "spigot";
  };

  # Secrets management
  age.secrets = {
    ionos-prefix = {
      file = ../secrets/ionos-prefix.age;
      owner = "ionos-dyndns";
      group = "ionos-dyndns";
    };
    ionos-secret = {
      file = ../secrets/ionos-secret.age;
      owner = "ionos-dyndns";
      group = "ionos-dyndns";
    };
  };

  # DynDNS stuff. IONOS has a (proprietary?) API for this,
  # so we're using a Python script from the interwebs :shrug:
  services.ionos-dyndns = {
    enable = true;
    # Must match the user owning the secrets below. See agenix config
    # above for more details.
    user = "ionos-dyndns";
    apiPrefixPath = config.age.secrets.ionos-prefix.path;
    apiSecretPath = config.age.secrets.ionos-secret.path;
    aaaa = true;
    fqdn = "blocks.beany.club";
    interface = "enp0s25";
  };

  # Open ports in the firewall.
  networking.firewall.allowedTCPPorts = [ 25565 ];
  networking.firewall.allowedUDPPorts = [ 25565 ];
  # Or disable the firewall altogether.
  # networking.firewall.enable = false;

  # TODO: Backups

  # Practical hardware options
  services.logind.lidSwitch = "ignore";
  powerManagement.cpuFreqGovernor = lib.mkDefault "powersave";

  # Copy the NixOS configuration file and link it from the resulting system
  # (/run/current-system/configuration.nix). This is useful in case you
  # accidentally delete configuration.nix.
  # system.copySystemConfiguration = true;

  # This value determines the NixOS release from which the default
  # settings for stateful data, like file locations and database versions
  # on your system were taken. It's perfectly fine and recommended to leave
  # this value at the release version of the first install of this system.
  # Before changing this value read the documentation for this option
  # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
  system.stateVersion = "23.05"; # Did you read the comment?

}