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

let
  keys = import ../../../variables/keys.nix;

in {
  # TASK: new device
  networking.hostName = "srv0"; # Define your hostname.
  # networking.domain =  "home-ch.stefanjunker.de";

  networking.firewall.enable = true;
  networking.firewall.allowedTCPPorts = [
    # iperf3
    5201
  ];
  networking.firewall.logRefusedConnections = false;

  networking.usePredictableInterfaceNames = false;
  networking.dhcpcd = {
    enable = true;
    persistent = true;
  };

  networking.interfaces.eth0 = {
    useDHCP = true;
    # ipv6.addresses = [
    #   { address = "2a02:c207:3003:2387::1"; prefixLength = 64; }
    # ];
  };

  # networking.defaultGateway6 = {
  #   address = "fe80::1";
  #   interface = "eth0";
  # };

  networking.nat = {
    enable = true;
    internalInterfaces = [ "ve-+" ];
    externalInterface = "eth0";
  };

  # Kubernetes
  # services.kubernetes.roles = ["master" "node"];

  # virtualization
  virtualisation = {
    docker.enable = true;
  };

  nix.gc = {
    automatic = true;
  };

  networking.useHostResolvConf = true;

  containers = {
    mailserver = import ../../containers/mailserver.nix {
      hostAddress = "192.168.100.10";
      localAddress = "192.168.100.11";

      imapsPort = 993;
      sievePort = 4190;
    };

    webserver = import ../../containers/webserver.nix {
      hostAddress = "192.168.100.12";
      localAddress = "192.168.100.13";

      httpPort = 80;
      httpsPort = 443;
    };

    syncthing = import ../../containers/syncthing.nix {
      hostAddress = "192.168.100.14";
      localAddress = "192.168.100.15";

      syncthingPort = 22000;
    };

    backup = import ../../containers/backup.nix {
      inherit config;
      hostAddress = "192.168.100.16";
      localAddress = "192.168.100.17";
      subvolumes = [
        "mailserver"
        "webserver"
        "backup"
        "syncthing"
      ];
    };
  };

  # 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 = "20.03"; # Did you read the comment?
}