# This is your system's configuration file.
# Use this to configure your system environment (it replaces /etc/nixos/configuration.nix)
{
  inputs,
  outputs,
  lib,
  config,
  pkgs,
  ...
}: {
  # You can import other NixOS modules here
  imports = [
    # networking configuration
    ./networking.nix

    # packages
    ./packages.nix

    # desktop setup
    ./desktop.nix
  ];

  # This will add each flake input as a registry
  # To make nix3 commands consistent with your flake
  nix.registry = (lib.mapAttrs (_: flake: {inherit flake;})) ((lib.filterAttrs (_: lib.isType "flake")) inputs);

  # This will additionally add your inputs to the system's legacy channels
  # Making legacy nix commands consistent as well, awesome!
  nix.nixPath = ["/etc/nix/path"];
  environment.etc =
    lib.mapAttrs'
    (name: value: {
      name = "nix/path/${name}";
      value.source = value.flake;
    })
    config.nix.registry;

  nix.settings = {
    # Enable flakes and new 'nix' command
    experimental-features = "nix-command flakes";
    # Deduplicate and optimize nix store
    auto-optimise-store = true;
    # i'd say i trust myself tbh
    trusted-users = ["ruben"];
    substituters = [
      "https://cache.nixos.org"
      "https://nix-community.cachix.org"
    ];
    trusted-public-keys = [
      "cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY="
      "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
    ];
  };

  # use linux-zen
  boot.kernelPackages = pkgs.linuxKernel.packages.linux_zen;

  # Bootloader.
  boot.loader.systemd-boot.enable = true;
  boot.loader.efi.canTouchEfiVariables = true;
  # see https://nixos-and-flakes.thiscute.world/nixos-with-flakes/other-useful-tips#reducing-disk-usage
  # for below:
  # limit to 10 generations
  boot.loader.systemd-boot.configurationLimit = 10;

  # Perform garbage collection weekly to maintain low disk usage
  nix.gc = {
    automatic = true;
    dates = "weekly";
    options = "--delete-older-than 1w";
  };

  # enable plymouth because it looks cool :)))
  boot.plymouth = {
    enable = true;
    theme = "bgrt";
  };

  # opengl and graphics settings
  # https://nixos.wiki/wiki/Accelerated_Video_Playback
  hardware.opengl = {
    enable = true;
    extraPackages = with pkgs; [
      intel-media-driver # LIBVA_DRIVER_NAME=iHD
      intel-vaapi-driver # LIBVA_DRIVER_NAME=i965 (older but works better for Firefox/Chromium)
      libvdpau-va-gl
    ];
  };
  environment.sessionVariables = { LIBVA_DRIVER_NAME = "iHD"; }; # Force intel-media-driver

  # Enable CUPS to print documents.
  services.printing = {
    enable = true;
    drivers = with pkgs; [canon-cups-ufr2];
  };
  services.avahi.enable = true;
  services.avahi.nssmdns4 = true;

  # enable zram for swap stuff
  zramSwap.enable = true;

  # https://nixos.wiki/wiki/FAQ/When_do_I_update_stateVersion
  system.stateVersion = "23.11";
}