# This is your system's configuration file.
# Use this to configure your system environment (it replaces /etc/nixos/configuration.nix)
{
  inputs,
  lib,
  config,
  pkgs,
  ...
}: {
  # You can import other NixOS modules here
  imports = [
    # If you want to use modules from other flakes (such as nixos-hardware):
    # inputs.hardware.nixosModules.common-cpu-amd
    # inputs.hardware.nixosModules.common-ssd

    # You can also split up your configuration and import pieces of it here:
    # ./users.nix

    # Import your generated (nixos-generate-config) hardware configuration
    ./hardware-configuration.nix
  ];

  nixpkgs = {
    # You can add overlays here
    overlays = [
      # If you want to use overlays exported from other flakes:
      # neovim-nightly-overlay.overlays.default

      # Or define it inline, for example:
      # (final: prev: {
      #   hi = final.hello.overrideAttrs (oldAttrs: {
      #     patches = [ ./change-hello-to-hi.patch ];
      #   });
      # })
    ];
    # Configure your nixpkgs instance
    config = {
      # Disable if you don't want unfree packages
      allowUnfree = true;
    };
  };

  nix = let
    flakeInputs = lib.filterAttrs (_: lib.isType "flake") inputs;
  in {
    settings = {
      # Enable flakes and new 'nix' command
      experimental-features = "nix-command flakes";
      # Opinionated: disable global registry
      flake-registry = "";
      # Workaround for https://github.com/NixOS/nix/issues/9574
      nix-path = config.nix.nixPath;
    };
    # Opinionated: disable channels
    channel.enable = false;

    # Opinionated: make flake registry and nix path match flake inputs
    registry = lib.mapAttrs (_: flake: {inherit flake;}) flakeInputs;
    nixPath = lib.mapAttrsToList (n: _: "${n}=flake:${n}") flakeInputs;
  };

  # System packages
  environment.systemPackages = with pkgs; [
    git
    pyright
    python3
    gcc
    nodejs_22
    cargo
    gnumake
    stow
    wget
    curl
    ripgrep
    nixd
    neovim
  ];

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

  # TODO: Set your hostname
  networking.hostName = "cnix";

  # Time zone & Locale
  time.timeZone = "Europe/Stockholm";

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

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


  # Configure keymap in X11
  services.xserver.xkb = {
    extraLayouts.hhkbse = {
      description = "HHKBse by cnst";
      languages = [ "se" ];
      symbolsFile = /home/cnst/Documents/nix-config/nixos/xkb/symbols/hhkbse;
    };
    layout = "hhkbse";
   # dir = "/home/cnst/Documents/nix-config/nixos/xkb";
    variant = "";
    options = "lv3:rwin_switch";
  };

  # Console keymap
  console.useXkbConfig = true;

  # TODO: Configure your system-wide user settings (groups, etc), add more users as needed.
  users.users = {
    cnst = {
      # TODO: You can set an initial password for your user.
      # If you do, you can skip setting a root password by passing '--no-root-passwd' to nixos-install.
      # Be sure to change it (using passwd) after rebooting!
      initialPassword = "1234";
      isNormalUser = true;
      openssh.authorizedKeys.keys = [
        # TODO: Add your SSH public key(s) here, if you plan on using SSH to connect
      ];
      # TODO: Be sure to add any other groups you need (such as networkmanager, audio, docker, etc)
      extraGroups = [ "wheel" "networkmanager" "audio" "video" ];
    };
  };

  # This setups a SSH server. Very important if you're setting up a headless system.
  # Feel free to remove if you don't need it.
  services.openssh = {
    enable = true;
    settings = {
      # Opinionated: forbid root login through SSH.
      PermitRootLogin = "no";
      # Opinionated: use keys only.
      # Remove if you want to SSH using passwords
      PasswordAuthentication = false;
    };
  };

  # https://nixos.wiki/wiki/FAQ/When_do_I_update_stateVersion
  system.stateVersion = "24.05";
}