NixOS-Configs/server/configuration.nix

{ config, pkgs, ... }:

{
  # Bootloader.
  boot.loader.systemd-boot.enable = true;
  boot.loader.efi.canTouchEfiVariables = true;
  boot.loader.efi.efiSysMountPoint = "/boot";
  boot.kernelPackages = pkgs.linuxPackages_latest;

  # Enable networking
  networking.networkmanager.enable = true;
  networking.networkmanager.wifi.powersave = true;
  networking.useDHCP = false;
  networking.extraHosts =
    ''
      100.75.7.116	 harper.tail rss.duckland.org vault.duckland.org git.duckland.org photos.duckland.org recipes.duckland.org vault.duckland.org dashy.duckland.org music.duckland.org bandwidth.duckland.org bandwidth2.duckland.org speed.duckland.org cloud.duckland.org plex.duckland.org smoke.duckland.org smart.duckland.org drone.home.duckland.org webhook.home.duckland.org cal.duckland.org gluetun.config.duckland.org jelly.duckland.org harper
    '';

  # Set your time zone.
  time.timeZone = "America/Chicago";

  # Select internationalisation properties.
  i18n.defaultLocale = "en_US.utf8";

  # Splash screen
  boot.plymouth.enable = false;
  boot.plymouth.theme = "breeze";

  # Enable doas instead of sudo
  security.sudo.enable = false;
  security.doas.enable = true;
  security.doas.extraRules = [{
    users = [ "don" ];
    keepEnv = true;
    noPass = true;
  }];

  sound.enable = false;
  security.rtkit.enable = true;

  # Define a user account. Don't forget to set a password with ‘passwd’.
  users.users.don = {
    isNormalUser = true;
    description = "Don Harper";
    extraGroups = [ "networkmanager" "wheel" "scanner" "lp" ];
    openssh.authorizedKeys.keys = [
      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAINd8AdVbQQ/Fmw+b9mI8EMYqIoRkwmSwAOtmlte3incL don@loki"
    ];
  };

  # Allow unfree packages
  nixpkgs.config.allowUnfree = false;

  # List packages installed in system profile. To search, run:
  # $ nix search wget
  environment.systemPackages = with pkgs; [
    #vim
    git-crypt
    gitFull
    gnupg
    home-manager
    keyutils
    mosh
    podman-compose
    python310
    python310Packages.pipx
    python310Packages.setuptools
    python310Packages.tldextract
    syncthing
    tailscale
    tmux
    tmuxp
    topgrade
    wget
  ];

  programs.mtr.enable = true;
  services.tailscale.enable = true;
  # create a oneshot job to authenticate to Tailscale
  systemd.services.tailscale-autoconnect = {
    description = "Automatic connection to Tailscale";

    # make sure tailscale is running before trying to connect to tailscale
    after = [ "network-pre.target" "tailscale.service" ];
    wants = [ "network-pre.target" "tailscale.service" ];
    wantedBy = [ "multi-user.target" ];

    # set this service as a oneshot job
    serviceConfig.Type = "oneshot";

    # have the job run this shell script
    script = with pkgs; ''
      # wait for tailscaled to settle
      sleep 2

      # check if we are already authenticated to tailscale
      status="$(${tailscale}/bin/tailscale status -json | ${jq}/bin/jq -r .BackendState)"
      if [ $status = "Running" ]; then # if so, then do nothing
        exit 0
      fi

      # otherwise authenticate with tailscale
      ${tailscale}/bin/tailscale up -authkey tskey-auth-kt22J52CNTRL-iT7CCqfci73sWvVy6Dyi83DWzwLnNyknF
    '';
  };


  # Enable the OpenSSH daemon.
  services.openssh = {
    enable = true;
    passwordAuthentication = false;
    kbdInteractiveAuthentication = false;
    #permitRootLogin = "yes";
  };

  # Open ports in the firewall.
  networking.firewall = {
    enable = true;
    # always allow traffic from your Tailscale network
    trustedInterfaces = [ "tailscale0" ];
    checkReversePath = "loose";

    # allow the Tailscale UDP port through the firewall
    allowedUDPPorts = [ config.services.tailscale.port ];

    # allow you to SSH in over the public internet
    allowedTCPPorts = [ 22 80 443 ];
  };


  system.stateVersion = "22.05"; # Did you read the comment?
  programs.msmtp = {
    enable = true;
    accounts = {
      default = {
        auth = true;
        tls = true;
        from = "duck@duckland.org";
        host = "smtp.gmail.com";
        user = "duckunix@gmail.com";
        passwordeval = "cat /home/don/.smtp_password.txt";
      };
    };
  };
  nix.gc = {
    automatic = true;
    options = "-d";
  };
  virtualisation = {
    podman = {
      enable = true;

      # Create a `docker` alias for podman, to use it as a drop-in replacement
      dockerCompat = true;

      # Required for containers under podman-compose to be able to talk to each other.
      defaultNetwork.dnsname.enable = true;
    };
  };
}