# Edit this configuration file to define what should be installed on
# your system.  Help is available in the configuration.nix(5) man page
# and in the NixOS manual (accessible by running `nixos-help`).

{
  config,
  pkgs,
  ssh,
  ...
}:
let
  ipv4Address = "65.21.145.150";
  ipv6Address = "2a01:4f9:c011:9ac1::1";
in
{
  nix = {
    settings = {
      experimental-features = [
        "nix-command"
        "flakes"
      ];
      auto-optimise-store = true;
    };
    gc = {
      automatic = true;
      dates = "weekly";
      options = "--delete-older-than 30d";
    };
  };

  boot.loader.systemd-boot.enable = true;
  boot.loader.efi.canTouchEfiVariables = true;

  networking.hostName = "freun-dev"; # Define your hostname.
  networking.domain = "freun.dev";
  networking.useDHCP = false;
  networking.nftables.enable = true;

  services.octodns.records = {
    "" = {
      A = {
        ttl = 86400;
        values = [ ipv4Address ];
      };
      AAAA = {
        ttl = 86400;
        values = [ ipv6Address ];
      };
      TXT = {
        ttl = 86400;
        values = [
          "v=spf1 include:spf.uberspace.de ~all"
        ];
      };
    };
    "_dmarc".TXT = {
      ttl = 86400;
      values = [ "v=DMARC1; p=reject" ];
    };
    "uberspace._domainkey".TXT = {
      ttl = 86400;
      values = [
        "v=DKIM1\\;t=s\\;n=core\\;p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArjZrrWhFn/xSH3+aPA3G1eGD5yAeyn7ZhHSCBM7b/9A5Fny9URjEf1La7dcU+oF/d7outgmTCs/umItBCB7ybkMriaLC+RBZJY0blf35bMYWL9NLpbKzVVAZQPgDZJm7R/grbg0nJgb5RCGLYu9iPcRjJtpu2vYaitkNh8WJ4q+iA/YOos2pQmP+6I5zLTVenFfEWJccdtfhJcORSuONN+Xi1+dQxpQzlwxUWz4DgOsfVaE3woDH3RAAQCtiMyk8ZQhhrL85pHH6zT3sNXzzVphJdIIYA+VYAgYYOTkRbdDhYSd5zCDX5f4L1UmBsJS2ommBGvw2qMDhagXsaN32BwIDAQAB"
      ];
    };
    "ts" = {
      A = {
        ttl = 86400;
        values = [ "100.84.105.63" ];
      };
      AAAA = {
        ttl = 86400;
        values = [ "fd7a:115c:a1e0::7901:693f" ];
      };
    };
  };

  systemd.network = {
    enable = true;
    networks.static = {
      name = "enp1s0";
      address = [
        "${ipv4Address}/32"
        "${ipv6Address}/64"
      ];
      routes = [
        { Gateway = "fe80::1"; }
        {
          Gateway = "172.31.1.1";
          GatewayOnLink = true;
        }
      ];
      dns = [
        # Hetzner
        "185.12.64.1"
        "185.12.64.2"
        "2a01:4ff:ff00::add:1"
        "2a01:4ff:ff00::add:2"
        # Quad9
        "9.9.9.9"
        "149.112.112.112"
        "2620:fe::fe"
        "2620:fe::9"
      ];
    };
  };

  services.networkd-dispatcher = {
    enable = true;
    rules."50-tailscale" = {
      onState = [ "routable" ];
      script = ''
        #!${pkgs.runtimeShell}
        ${pkgs.ethtool}/bin/ethtool -K ${config.systemd.network.networks.static.name} rx-udp-gro-forwarding on rx-gro-list off
      '';
    };
  };

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

  # 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 = "us";
  #   useXkbConfig = true; # use xkbOptions in tty.
  # };

  # Configure keymap in X11
  services.xserver.xkb.layout = "us";
  services.xserver.xkb.options = "eurosign:e,caps:escape";

  # Define a user account. Don't forget to set a password with ‘passwd’.
  users.users.jokke = {
    isNormalUser = true;
    extraGroups = [ "wheel" ]; # Enable ‘sudo’ for the user.
    packages = [ pkgs.nh ];
    openssh.authorizedKeys.keys = [ ssh.publicKeys.yubikey ];
  };
  users.users.root.openssh.authorizedKeys.keys = [ ssh.publicKeys.yubikey ];

  nix.settings.trusted-users = [ "jokke" ];

  # List packages installed in system profile. To search, run:
  # $ nix search wget
  environment.systemPackages = with pkgs; [
    vim # Do not forget to add an editor to edit configuration.nix! The Nano editor is also installed by default.
    wget
    htop
    git
  ];

  # Some programs need SUID wrappers, can be configured further or are
  # started in user sessions.
  # programs.mtr.enable = true;
  # programs.gnupg.agent = {
  #   enable = true;
  #   enableSSHSupport = true;
  # };

  # List services that you want to enable:

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

  modules.firewall = {
    enable = true;
    allInterfaces = [ "ssh" ];
  };

  # 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 = "24.11"; # Did you read the comment?
}