{ config, pkgs, ... }:
{
  imports = [ ./hardware-configuration.nix ];

  boot.tmp.cleanOnBoot = true;
  zramSwap.enable = true;

  networking.hostName = "djmuk2";
  networking.firewall = {
    enable = true;
    allowedTCPPorts = [ 113 ];
  };

  services.openssh = {
    enable = true;
    settings = {
      PermitRootLogin = "no";
      PasswordAuthentication = false;
      KbdInteractiveAuthentication = false;
    };
    extraConfig = ''
      #AllowTcpForwarding yes
      X11Forwarding no
      AllowAgentForwarding no
      AllowStreamLocalForwarding no
      AuthenticationMethods publickey
      AllowUsers djm
    '';
  };
  services.sshguard.enable = true;
  services.oidentd.enable = true;

  services.locate = {
    enable = true;
    package = pkgs.plocate;
    localuser = null;
  };

  # Emulate nix-sops. Technically an anti-pattern, but this isn't a real secret, and this has to be embedded here, as we cannot set a file path to read it from.
  # Populate/update with:
  # SOPS_AGE_KEY=$(doas ssh-to-age -private-key -i /etc/ssh/ssh_host_ed25519_key) sops -d --extract '["openiscsi_name"]' machines/djmuk2/secrets.yaml | doas tee /root/.config/secrets/openiscsi_name
  services.openiscsi.enable = true;
  services.openiscsi.name = builtins.readFile "/root/.config/secrets/openiscsi_name";
  #services.openiscsi.enableAutoLoginOut = true;

  users.users.djm = {
    isNormalUser = true;
    home = "/home/djm";
    description = "David Morgan";
    extraGroups = [
      "wheel"
      "plocate"
    ];
    shell = pkgs.zsh;
    openssh.authorizedKeys.keys = [
      "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCurCpxZCHtByB5wXzsjTXwMyDSB4+B8rq5XY6EGss58NwD8jc5cII4i+QUbCOGTiAggSZUSC9YIP24hjpOeNT/IYs5m7Qn1B9MtBAiUSrIYew8eDwnMLlPzN+k2x9zCrJeCHIvGJaFHPXTh1Lf5Jt2fPVGW9lksE/XUVOe6ht4N/b+nqqszXFhc8Ug6le2bC1YeTCVEf8pjlh/I7DkDBl6IB8uEXc3X2vxxbV0Z4vlBrFkkAywcD3j5VlS/QYfBr4BICNmq/sO3fMkbMbtAPwuFxeL4+h6426AARQZiSS0qVEc8OoFRBVx3GEH5fqVAWfB1geyLzei22HbjUcT9+xN davidmo@gendros"
      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIK9UDTaVnUOU/JknrNdihlhhGOk53LmHq9I1ASri3aga djm@gaius"
    ];
  };

  security.sudo.extraConfig = ''
    djm ALL=(ALL) NOPASSWD: ALL
  '';
  security.doas = {
    enable = true;
    extraRules = [
      {
        users = [ "djm" ];
        noPass = true;
        keepEnv = true;
      }
    ];
  };

  programs.zsh.enable = true;

  programs.vim.defaultEditor = true;

  environment.systemPackages = with pkgs; [
    #procmail
    git
    vim
    wget
  ];

  nix.settings.trusted-users = [
    "root"
    "djm"
  ];
  nix.optimise.automatic = true;
  nix.optimise.dates = [ "03:00" ];

  i18n.defaultLocale = "en_GB.UTF-8";

  system.stateVersion = "22.05";
}