# 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, lib, inputs, ... }:

{
  nix.settings.experimental-features = [ "nix-command" "flakes" ];

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

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

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

  # Configure keymap in X11
  services.xserver.xkb = {
    layout = "gb";
    variant = "";
  };

  # Console (TTY) Configuration
  console = {
    # Configure console keymap
    keyMap = "uk";
    # Configure console colors (Gruvbox Light) - More colourschemes at https://github.com/kolunmi/ttyscheme/blob/main/ttyscheme
    colors = [
      "fbf1c7"
      "cc241d"
      "98971a"
      "d79921"
      "458588"
      "b16286"
      "689d6a"
      "7c6f64"
      "928374"
      "9d0006"
      "79740e"
      "b57614"
      "076678"
      "8f3f71"
      "427b58"
      "3c3836"
    ];
  };
  
  fonts.packages = with pkgs; [
    nerdfonts
  ];

  # Define a user account. Don't forget to set a password with ‘passwd’.
  users.users.cspark = {
    isNormalUser = true;
    description = "Curt Spark";
    extraGroups = [ "networkmanager" "wheel" "libvirtd" "libvirt" "kvm" "input" ];
  };

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

  # Due to NixOS not using FHS paths, many DAWs will not know where to look for VSTs and other plugins. You can solve this by setting 
  environment.variables = let
    makePluginPath = format:
      (lib.strings.makeSearchPath format [
        "$HOME/.nix-profile/lib"
        "/run/current-system/sw/lib"
        "/etc/profiles/per-user/$USER/lib"
      ])
      + ":$HOME/.${format}";
  in {
    DSSI_PATH   = makePluginPath "dssi";
    LADSPA_PATH = makePluginPath "ladspa";
    LV2_PATH    = makePluginPath "lv2";
    LXVST_PATH  = makePluginPath "lxvst";
    VST_PATH    = makePluginPath "vst";
    VST3_PATH   = makePluginPath "vst3";

    # Dotnet libicu not found fix
    DOTNET_SYSTEM_GLOBALIZATION_INVARIANT = "1";
  };

  # NixOS Dynamic Libraries Fix
  programs.nix-ld.enable = true;
  programs.nix-ld.libraries = with pkgs; [
    # Add any missing dynamic libraries for unpackaged programs
    # here, NOT in environment.systemPackages
    icu
  ];

  # Systemwide Java support
  programs.java.enable = true;

  # Emacs Config Init Service - For root user also
  systemd.services.emacs-config-initialiser = {
    description = "Initialises default emacs configuration if not available";
    wantedBy = [ "multi-user.target" ];
    path = with pkgs; [ coreutils git ];
    enable = true;
    serviceConfig = {
      User = "root";
      Group = "root";
    };
    script = "
      if [[ ! -d $HOME/.emacs.d ]]; then
        git clone https://git.cspark.dev/cspark/Emacs-Configuration $HOME/.emacs.d
      else
        exit 0
      fi
    ";
  };

  # Virt Manager Installation
  virtualisation.libvirtd.enable = true;
  programs.virt-manager.enable = true;
  virtualisation.spiceUSBRedirection.enable = true;


  # 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;

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

  # 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 = "23.11"; # Did you read the comment?

}