# 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, ... }:

{
  imports =
    [ # Include the results of the hardware scan.
      ./hardware-configuration.nix
#      ./ssh.nix
    ];

  # Bootloader.
  boot.loader.grub.enable = true;
  boot.loader.grub.device = "/dev/vda";
  boot.loader.grub.useOSProber = true;

  networking.hostName = "ne009"; # Define your hostname.
  # networking.wireless.enable = true;  # Enables wireless support via wpa_supplicant.

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

  # Enable networking
  networking.networkmanager.enable = true;

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

  # Select internationalisation properties.
  i18n.defaultLocale = "en_US.UTF-8";

  i18n.extraLocaleSettings = {
    LC_ADDRESS = "en_US.UTF-8";
    LC_IDENTIFICATION = "en_US.UTF-8";
    LC_MEASUREMENT = "en_US.UTF-8";
    LC_MONETARY = "en_US.UTF-8";
    LC_NAME = "en_US.UTF-8";
    LC_NUMERIC = "en_US.UTF-8";
    LC_PAPER = "en_US.UTF-8";
    LC_TELEPHONE = "en_US.UTF-8";
    LC_TIME = "en_US.UTF-8";
  };
##############################################################################################

  # Configure keymap in X11
  services.xserver.xkb.layout = "us";
  services.xserver.xkb.variant = "";
  
  # Enable automatic login for the user.
  services.getty.autologinUser = "user";


##############################################################################################
# Enable Firmware Update

  services.fwupd.enable = true;
  
##############################################################################################
#  SECURITY : doas to replace sudo 

  security.doas.enable = true;
  security.doas.extraRules = [{
    groups = [ "wheel" ];
    users = [ "user" ];
    persist = true;
    keepEnv = true;
  }];
  security.sudo.enable = false;
  security.sudo.execWheelOnly = true;
  
##############################################################################################

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

  # 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
    git
    pcsclite
#    alpaca
    btop
    # For L5-Engineering/Devlopers [ NOTE MUST BE USED WITH 'CONTAINIZAZATION' SECTION!!! ]
    dive # look into docker image layers
    podman-tui # status of containers in the terminal
    docker-compose # start group of containers for dev
    #podman-compose # start group of containers for dev
  ];
##############################################################################################

######################################################################################
# To Enable Virtualization

  # Enable libvirtd for managing virtual machines
  virtualisation.libvirtd.enable = true;

  # Enable virt-manager, the graphical user interface
  programs.virt-manager.enable = true;

  # Add the current user to the libvirtd group for access
#  users.users.username.extraGroups = [ "libvirtd" ];
  users.groups.libvirtd.members = ["user"];
  
  # Configure QEMU (optional)
  virtualisation.libvirtd.qemu.vhostUserPackages = with pkgs; [ virtiofsd ];

  # Enable services for QEMU guests (optional)
  services.qemuGuest.enable = true;
  services.spice-vdagentd.enable = true; # Enable copy and paste
  
  virtualisation.spiceUSBRedirection.enable = true;



######################################################################################
# To Enable Containerization

  # Enable common container config files in /etc/containers
  virtualisation.containers.enable = true;
  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.settings.dns_enabled = true;
    };
  };

##############################################################################################

  # Define a user account. Don't forget to set a password with ‘passwd’.
  users.users.user = {
    isNormalUser = true;
    description = "user";
    extraGroups = [ "networkmanager" "wheel" ];
    packages = with pkgs; [
      kdePackages.kate
    #  thunderbird
    ];   
    openssh.authorizedKeys.keys = [
        "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIG6GNWvC4o2MfwCWl7ClIMAL/UncQvJdxigrON0kLTkX" 
        # example ssh -o "IdentitiesOnly=yes" -i id_red_penguin user@192.168.1.251
    ];

  };


  # 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;
##############################################################################################

  services.openssh.enable = true;
  services.openssh.ports = [ 22 ];
  services.openssh.settings.PasswordAuthentication = true; #set to false only after public key is setup / security key is setup 
#  services.openssh.settings.AllowUsers = null; # Allows all users by default. Can be [ "user1" "user2" ]
  services.openssh.settings.AllowUsers = null; 
  # Allows ONLY "user" users
  services.openssh.settings.UseDns = true;
  services.openssh.settings.X11Forwarding = false;
  services.openssh.settings.PermitRootLogin = "prohibit-password"; # "yes", "without-password", "prohibit-password", "forced-commands-only", "no"
#  services.openssh.settings.KbdInteractiveAuthentication = false;
  

# services.openssh.protocol = "2";

  # Open ports in the firewall.
  #networking.firewall.allowedTCPPorts = [ 22 3389 ];
  # networking.firewall.allowedUDPPorts = [ ... ];
  # Or disable the firewall altogether.
  # networking.firewall.enable = false;
##########################################################################################
# Enables Caddy  

services.caddy.enable = true;
# services.caddy.package = pkgs.callPackage /etc/caddy/custom-package.nix { };
##########################################################################################   

  # 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 = "25.05"; # Did you read the comment?

}