# This is your system's configuration file.
# Use this to configure your system environment (it replaces /etc/nixos/configuration.nix)
{
  inputs,
  lib,
  config,
  pkgs,
  ...
}: {
  imports = [
    ./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 = {
      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;
  };

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

  
  # Enable networking
  networking.networkmanager.enable = true;

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

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

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

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

  # Enable CUPS to print documents.
  services.printing.enable = true;

  # Enable sound with pipewire.
  services.pulseaudio.enable = false;
  security.rtkit.enable = true;
  services.pipewire = {
    enable = true;
    alsa.enable = true;
    alsa.support32Bit = true;
    pulse.enable = true;
    # If you want to use JACK applications, uncomment this
    #jack.enable = true;
  };

  
  # Enable the KDE Plasma Desktop Environment.
  services.displayManager.sddm.enable = true;
  services.desktopManager.plasma6.enable = true;

  # Activate global programs
  programs.firefox.enable = true;
  programs.steam.enable = true;

  fonts.packages = with pkgs; [
    noto-fonts
    noto-fonts-color-emoji
    fira-code
    fira-code-symbols
  ] ++ builtins.filter lib.attrsets.isDerivation (builtins.attrValues pkgs.nerd-fonts);

  # Set up 1password
  programs._1password.enable = true;
  programs._1password-gui = {
    enable = true;
    polkitPolicyOwners = [ "janne" ];
  };
  
  # Hostname and users
  networking.hostName = "hermes";
  users.users = {
    janne = {
      isNormalUser = true;
      openssh.authorizedKeys.keys = [
        # TODO: Add your SSH public key(s) here, if you plan on using SSH to connect
      ];
      extraGroups = ["wheel", "networkmanager"];
    };
  };

  # 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 = {
      PermitRootLogin = "no";
      PasswordAuthentication = false;
    };
  };

  # https://nixos.wiki/wiki/FAQ/When_do_I_update_stateVersion
  system.stateVersion = "25.05";
}