# This is your system's configuration file.
# Use this to configure your system environment (it replaces /etc/nixos/configuration.nix)
{
  inputs,
  lib,
  config,
  pkgs,
  system,
  ...
}: {
  # 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 = [
      inputs.nixvim.packages.${pkgs.system}.default
      pkgs.git
      pkgs.pyright
      pkgs.python3
      pkgs.gcc
      pkgs.nodejs_22
      pkgs.cargo
      pkgs.gnumake
      pkgs.stow
      pkgs.wget
      pkgs.curl
      pkgs.ripgrep
      pkgs.nixd
    ];
    localBinInPath = true;
  };
  fonts.packages = with pkgs; [
    noto-fonts
    noto-fonts-cjk
    noto-fonts-emoji
    liberation_ttf
    fira-code-symbols
    font-awesome
    jetbrains-mono
    (nerdfonts.override {fonts = ["JetBrainsMono" "FiraCode" "Iosevka" "3270" "DroidSansMono"];})
  ]; # Bootloader
  boot.loader.systemd-boot.enable = true;
  boot.loader.efi.canTouchEfiVariables = true;
  # Enable networking
  networking.networkmanager.enable = true;
  # TODO: Set your hostname
  networking.hostName = "cnix";
  # Enable sound with pipewire.
  hardware = {
    pulseaudio.enable = false;
    graphics = {
      enable = true;
    };
  };

  security.rtkit.enable = true;

  programs = {
    hyprland = {
      enable = true;
      xwayland.enable = true;
    };
    zsh.enable = true;
  };
  # 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";
  };

  # Console keymap
  console.useXkbConfig = true;

  # TODO: Configure your system-wide user settings (groups, etc), add more users as needed.
  users.users = {
    cnst = {
      isNormalUser = true;
      shell = pkgs.zsh;
      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"];
    };
  };

  # services
  services = {
    mullvad-vpn.enable = true;
    mullvad-vpn.package = pkgs.mullvad-vpn;
    greetd = {
      enable = true;
      settings = {
        initial_session = {
          command = "${pkgs.hyprland}/bin/Hyprland";
          user = "cnst";
        };
        default_session = {
          command = "${pkgs.greetd.tuigreet}/bin/tuigreet -r --remember-session";
          user = "greeter";
        };
      };
    };
    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;
      };
    };
    xserver = {
      enable = true;
      #  displayManager.gdm.enable = true;
      desktopManager.gnome.enable = true;
      xkb = {
        extraLayouts.hhkbse = {
          description = "HHKBse by cnst";
          languages = ["se"];
          symbolsFile = /home/cnst/.nix-config/nixos/xkb/symbols/hhkbse;
        };
        layout = "hhkbse";
        # dir = "/home/cnst/.nix-config/nixos/xkb";
        variant = "";
        options = "lv3:rwin_switch";
      };
    };
    pipewire = {
      enable = true;
      alsa.enable = true;
      alsa.support32Bit = true;
      pulse.enable = true;
      # If you want to use JACK applications, uncomment this
      #jack.enable = true;

      # use the example session manager (no others are packaged yet so this is enabled by default,
      # no need to redefine it in your config for now)
      #media-session.enable = true;
    };
  };

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