{ config, pkgs, ... }:

{
  networking.hostName = "fenrir-nixos"; # Define your hostname.
  imports = [ ../../nixos/custom.nix ];

  fileSystems."/".options = [ "ssd" "noatime" "compress=zstd" ];

  swapDevices = [{
    device = "/swapfile";
    size = 4 * 1024; # Creates an 4GB swap file
    randomEncryption.enable = true;
  }];

  boot.loader.systemd-boot.enable = true;
  boot.loader.efi.canTouchEfiVariables = true;

  # TODO: fix conflicted configurations

  # This runs only intel/amdgpu igpus and nvidia dgpus do not drain power.

  ##### disable nvidia, very nice battery life.
  # boot.extraModprobeConfig = ''
  #   blacklist nouveau
  #   options nouveau modeset=0
  # '';

  # services.udev.extraRules = ''
  #   # Remove NVIDIA USB xHCI Host Controller devices, if present
  #   ACTION=="add", SUBSYSTEM=="pci", ATTR{vendor}=="0x10de", ATTR{class}=="0x0c0330", ATTR{power/control}="auto", ATTR{remove}="1"

  #   # Remove NVIDIA USB Type-C UCSI devices, if present
  #   ACTION=="add", SUBSYSTEM=="pci", ATTR{vendor}=="0x10de", ATTR{class}=="0x0c8000", ATTR{power/control}="auto", ATTR{remove}="1"

  #   # Remove NVIDIA Audio devices, if present
  #   ACTION=="add", SUBSYSTEM=="pci", ATTR{vendor}=="0x10de", ATTR{class}=="0x040300", ATTR{power/control}="auto", ATTR{remove}="1"

  #   # Remove NVIDIA VGA/3D controller devices
  #   ACTION=="add", SUBSYSTEM=="pci", ATTR{vendor}=="0x10de", ATTR{class}=="0x03[0-9]*", ATTR{power/control}="auto", ATTR{remove}="1"
  # '';

  services.thermald.enable = true;
  services.power-profiles-daemon.enable = false;
  services.auto-cpufreq = {
    enable = true;
    settings = {
      battery = {
        governor = "powersave";
        turbo = "never";
      };
      charger = {
        governor = "powersave";
        turbo = "auto";
      };
    };
  };

  # boot.blacklistedKernelModules =
  #   [ "nouveau" "nvidia" "nvidia_drm" "nvidia_modeset" ];

  # TODO: try to connect proxy on all system

  networking.networkmanager = { enable = true; };

  time.timeZone = "Europe/Moscow";

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

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

  services.xserver.enable = true;

  services.xserver.displayManager.gdm.enable = true;
  services.xserver.desktopManager.gnome.enable = true;

  services.xserver.xkb = {
    layout = "us,ru";
    variant = "";
    options = "grp:win_space_toggle";
  };

  services.printing.enable = true;

  services.pulseaudio.enable = false;
  security.rtkit.enable = true;
  services.pipewire = {
    enable = true;
    alsa.enable = true;
    alsa.support32Bit = true;
    pulse.enable = true;
  };

  # services.xserver.libinput.enable = true;

  users.users.krosh = {
    isNormalUser = true;
    description = "krosh";
    extraGroups = [ "networkmanager" "wheel" ];
  };

  system.stateVersion = "25.11";

  programs.hyprland = {
    enable = true;
    withUWSM = true;
    # xwayland.enable = true; # Xwayland can be disabled.
  };

  hardware.graphics.enable = true;
  services.xserver.videoDrivers = [ "modesetting" "nvidia" ];
  # hardware.nvidia.open = true;
  hardware.nvidia = {
    open = true;
    modesetting.enable = true; # полезно и для Wayland/tearing
    prime = {
      offload.enable = true;
      offload.enableOffloadCmd = true; # добавит скрипт `nvidia-offload`

      # intelBusId = "PCI:0:2:0"; # <-- подставь свои
      # nvidiaBusId = "PCI:1:0:0"; # <-- подставь свои
    };
  };

  programs.uwsm.enable = true;

  users.users.krosh.shell = pkgs.zsh;

  security.polkit.enable = true;
  # hardware.nvidia.package = config.boot.kernelPackages.nvidiaPackages.latest;

  environment.sessionVariables.NIXOS_OZONE_WL = "1";
}