{ config, pkgs, ... }:

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

  # Bootloader.
  boot.loader = {
    efi.canTouchEfiVariables = true;
    grub = {
      enable = true;
      devices = [ "nodev" ];
      efiSupport = true;
      useOSProber = true;
    };
  };

  boot.initrd.kernelModules = [ "amdgpu" "coretemp" ];

  services.hardware.bolt.enable = true;

  networking.hostName = "nixpad"; # Define your hostname.

  # Enable networking
  networking.networkmanager.enable = true;

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

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

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

  services.displayManager.defaultSession = "none+i3";

  # Configure keymap in X11
  services.xserver = {
    xkb.layout = "de";
    xkb.variant = "";
    enable = true;
    dpi = 120;

    displayManager = {
      setupCommands = ''
        ${pkgs.xorg.xrandr}/bin/xrandr --output eDP-1 --mode 3840x2160;
      '';
    };

    windowManager.i3 = {
      enable = true;
      package = pkgs.i3-gaps;
      extraPackages = with pkgs; [
        dmenu
        i3lock
      ];
    };

    desktopManager.wallpaper.mode = "fill";
  };

  imports = [
    ./programm_configs/yubikey-gpg.nix
    ./printing/config.nix
  ];

  services.gvfs.enable = true;

  # VPN services
  services.openvpn.servers = {
    KIT = {
      autoStart = false;
      config = '' config /home/clemens/Uni/kit.ovpn '';
    };
  };

  # Bluetooth
  services.blueman.enable = true;

  # GNOME Keyring
  services.gnome.gnome-keyring.enable = true;

  # PipeWire Setup
  security.rtkit.enable = true;
  services.pipewire = {
    enable = true;
    audio.enable = true;
    alsa.enable = true;
    alsa.support32Bit = true;
    pulse.enable = true;
  };

  # Configure console keymap
  console.keyMap = "de";

  # enable zsh to allow setting it as a default shell
  programs.zsh.enable = true;

  # Define a user account. Don't forget to set a password with ‘passwd’.
  users.users.clemens = {
    isNormalUser = true;
    description = "clemens";
    initialPassword = "123456";
    extraGroups = [ "networkmanager" "wheel" ];
    shell = pkgs.zsh;
  };

  # home manager
  home-manager.useGlobalPkgs = true;
  home-manager.useUserPackages = true;
  home-manager.users.clemens = import ./home.nix;

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

  nixpkgs.config = {
    packageOverrides = pkgs: rec {
      polybar = pkgs.polybar.override {
        i3Support = true;
        pulseSupport = true;
      };
    };
  };

  # systemwide packages
  environment.systemPackages = with pkgs; [
    vim
    wget
  ];

  programs.dconf.enable = true;

  environment.pathsToLink = [ "/share/zsh" ];

  environment.sessionVariables = {
    GTK_THEME = "Adwaita:dark";
  };

  # 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 = "24.05"; # Did you read the comment?
}