# 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’).

###############################################################################
# Helpful Documentation
#
#   NixOS Manual:
#     https://nixos.org/manual/nixos/stable/
#
#   NixOS All Options:
#      https://nixos.org/manual/nixos/stable/options.html
#
#   Option Search:
#     https://search.nixos.org/options
#
#   Package Search:
#     https://search.nixos.org/packages
###############################################################################

###############################################################################
# TBD
# Make each section is own $.nix file and include it based on Ansible checks.
###############################################################################

{ config, pkgs, nix, ... }:

{
  #############################################################################
  # System Configuration
  #############################################################################

  imports =[
    # Include the results of the hardware scan.
    ./hardware-configuration.nix
    # Include any static entries that are handled outside of this project.
    ./static.nix
    # Include anything that Ansible has created.
    ./ansible.nix
    # Home Manager.
    <home-manager/nixos>
  ];

  # 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 = "23.05"; # Did you read the comment?

  #############################################################################
  # System Package Configuration
  #############################################################################

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

  # Setup keyfile
  boot.initrd.secrets = {
    "/crypto_keyfile.bin" = null;
  };

  # Enable grub cryptodisk
  boot.loader.grub.enableCryptodisk=true;

  # TBD: Does not work. Goes in "nix.conf"?
  #nix.extraOptions = "
  #  --extra-experimental-features
  #";

  #############################################################################
  # General Networking Configuration
  #############################################################################

  # Enable networking
  networking.networkmanager.enable = true;

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

  # TBD: Should this be here?
  boot.initrd.luks.devices."luks-39ae7203-d5af-47bf-95f6-b4f0eefebfc6".keyFile = "/crypto_keyfile.bin";
  # 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";

  #############################################################################
  # Locale
  #############################################################################

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

  # 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";
  };

  #############################################################################
  # User Setup
  #############################################################################

  # Define a user account. Don't forget to set a password with ‘passwd’.
  users.users.ling = {
    isNormalUser = true;
    description = "Hyperling";
    extraGroups = [ "networkmanager" "wheel" "sudo" "mlocate" "docker" ];
    #packages = with pkgs; [
    #  #firefox
    #  #thunderbird
    #];
  };

  #############################################################################
  # Desktop Environment
  #############################################################################

  # Enable the X11 windowing system.
  services.xserver.enable = true;

  # Enable the GNOME Desktop Environment.
  services.xserver.displayManager.gdm.enable = true;
  services.xserver.desktopManager.gnome.enable = true;

  # Remove the GNOME default packages.
  #services.gnome.core-utilities.enable = false;

  ###
  # GSettings, DConf type stuff.
  ##
  #   https://nixos.wiki/wiki/GNOME
  #services.xserver.desktopManager.gnome = {
  #  extraGSettingsOverrides = ''
  #    # Favorite apps in gnome-shell
  #    [org.gnome.shell]
  #    favorite-apps= \
  #      [ 'org.gnome.Terminal.desktop', 'gnome-system-monitor.desktop' \
  #      , 'org.gnome.Nautilus.desktop' \
  #      , 'librewolf.desktop', 'firefox.desktop' \
  #      , 'org.gnome.Evolution.desktop', 'deltachat.desktop' \
  #      , 'codium.desktop' \
  #      , 'org.shotcut.Shotcut.desktop', 'lbry.desktop' \
  #      , 'android-studio.desktop' \
  #      , 'signal-desktop.desktop' \
  #      ]
  #
  #    # TBD Need to finish figuring out how to load these.
  #    [org.gnome.shell.extensions.dash-to-dock]
  #    dock-position='LEFT'
  #    dock-fixed=true
  #    dash-max-icon-size=28
  #  '';
  #
  #  extraGSettingsOverridePackages = [
  #    pkgs.gnome.gnome-shell # for org.gnome.shell, not sure if it works TBD.
  #    #pkgs.gnomeExtensions.dash-to-dock # TBD Not sure what to do here yet.
  #  ];
  #};

  # Maybe try this?
  #   https://hoverbear.org/blog/declarative-gnome-configuration-in-nixos/
  #programs.dconf.enable = true;
  #dconf.settings = {
  #  "org/gnome/shell/" = {
  #    favorite-apps = [
  #      "org.gnome.Terminal.desktop"
  #      "gnome-system-monitor.desktop"
  #      "org.gnome.Nautilus.desktop"
  #      "librewolf.desktop"
  #      "firefox.desktop"
  #      "org.gnome.Evolution.desktop"
  #      "deltachat.desktop"
  #      "codium.desktop"
  #      "org.shotcut.Shotcut.desktop"
  #      "lbry.desktop"
  #      "android-studio.desktop"
  #      "signal-desktop.desktop"
  #    ];
  #  };
  #};

  # Or this?
  # https://rycee.gitlab.io/home-manager/index.html#sec-install-nixos-module
  # https://rycee.gitlab.io/home-manager/options.html#opt-dconf.settings
  #programs.dconf.enable = true;
  #home-manager.users.ling = { pkgs, ... }: {
  #
  #  home.packages = [ pkgs.atool pkgs.httpie ];
  #
  #  dconf.settings = {
  #    "/org/gnome/shell/extensions/dash-to-dock" = {
  #      dock-position = "'LEFT'";
  #      dock-fixed = true;
  #      dash-max-icon-size = 24;
  #    };
  #  };
  #
  #};

  ##

  # Configure keymap in X11
  services.xserver = {
    layout = "us";
    xkbVariant = "altgr-intl";
  };

  # Enable CUPS to print documents.
  services.printing.enable = true;

  # Enable sound with pipewire.
  sound.enable = true;
  hardware.pulseaudio.enable = false;
  security.rtkit.enable = true;
  services.pipewire = {
    enable = true;
    alsa.enable = true;
    alsa.support32Bit = true;
    pulse.enable = true;
    # If you want to use JACK applications, uncomment this
    #jack.enable = true;

    # use the example session manager (no others are packaged yet so this is enabled by default,
    # no need to redefine it in your config for now)
    #media-session.enable = true;
  };

  # Enable touchpad support (enabled default in most desktopManager).
  # services.xserver.libinput.enable = true;

  #############################################################################
  # Package Management
  #############################################################################

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

  ###
  # List packages installed in system profile.
  ##
  # To search for names, run `nix search wget` or use the website in the header.
  environment.systemPackages = with pkgs; [
    ###
    # General
    ##
    #ansible # try installing under Python then maybe it can use psutil?
    vim
    mlocate
    git
    curl
    sudo
    doas
    wget
    nmap
    lynis
    htop
    neofetch
    cowsay
    cron
    zsh

    # Python Setup
    # Main documentation
    #   https://nixos.org/manual/nixpkgs/stable/#python
    # See what modules are available, and which Python they are attached to:
    #   ls -l $(find "$(dirname $(which python))/.."  -name site-packages)
    #     Looks like 3.10, not 3.11 like was being installed. So annoying!
    #   https://discourse.nixos.org/t/python3-not-importing-modules/22061/2
    #python3
    (python3.withPackages(ps: with ps; [
      pip    # Works fine! Can access via `pip` or `python -m pip`.
      psutil # Not working. Not in path nor `-m`. Maybe not supposed to be, but ansible dconf module still saying "ModuleNotFoundError: No module named 'psutil'" Maybe add to ansible's python somehow?
      ansible # Nope, not accessible!!! WHAT!!!
      ansible-core # It's here! Thanks https://pypi.org/project/ansible/, psutil still not available though!!!!!!!!!!!!!
    ]))
    #python3Packages.pip
    #python3Packages.psutil # This does not work either, nor any 310 type versions.
    #python3Packages.ansible # This does not work either, nor any 310 type versions.
    ###

    ###
    # Coding
    ##
    vscodium
    android-studio
    dbeaver
    bash
    kotlin
    nodejs
    ksh
    zsh
    zulu  # OpenJDK
    #zulu8 # OpenJDK 8
    #python2
    #python
    #godot # If using C#
    godot_4 # If using Godot Script
    ###

    ###
    # Editing
    ##
    gimp
    shotcut
    openshot-qt
    obs-studio
    ffmpeg
    ###

    ###
    # Workstation
    ##
    gnomeExtensions.dash-to-dock
    gnome.nautilus
    gnome.gnome-tweaks
    gnome.dconf-editor
    #gnome.gnome-terminal # This does not theme well and is different from Console.
    gnome.gnome-system-monitor
    gnome.gedit
    gnome.geary
    gnome.evince
    librewolf
    firefox
    evolution
    deltachat-desktop
    signal-desktop
    lbry
    libreoffice
    vlc
    remmina
    imagemagick
    #etcher # Broken as of 20231013, uses too old a version of Electron.
    transmission

    # Wallets
    #exodus # Not being found, 403 error.
    monero-gui
    ###

    ###
    # Server
    ##
    # Not needed, prefer setting 'virtualisation.docker.enable'.
    #docker
    #docker-buildx
    #docker-compose
    ###
  ];

  # 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 ##

  # Configure the OpenSSH daemon.
  services.openssh = {
    enable = true;
    ports = [
      22
    ];
    settings = {
      PermitRootLogin = "no";
      AllowTcpForwarding = "no";
      ClientAliveInterval = 60;
      ClientAliveCountMax = 2;
      Compression = "no";
      LogLevel = "VERBOSE";
      MaxAuthTries = 3;
      MaxSessions = 2;
      TCPKeepAlive = "no";
      X11Forwarding = false;
      AllowAgentForwarding = "no";
      PermitEmptyPasswords = "no";
    };
  };

  #############################################################################
  # Non-System Package Configuration
  #############################################################################

  # Be able to use the locate command.
  services.locate.locate = pkgs.mlocate;
  services.locate.localuser = null;
  services.locate.enable = true;

  # Docker
  virtualisation.docker.enable = true;

}