{ config, pkgs, ... }:

let
  # Variable import
  vars = import ./vars;
in
{
  # Import
  imports = [ ./hdwr ./pkgs ./schd ];

  # System
  # ------

  # Bootloader
  boot.kernelParams = [ "consoleblank=300" "loglevel=3" "quiet" ];
  boot.loader = {
    timeout = 2;
    systemd-boot = {
      enable = true;
      consoleMode = "keep";
      configurationLimit = 12;
    };
    efi.canTouchEfiVariables = true;
  };

  # Time zone
  time.timeZone = vars.timezone;

  # Select internationalisation properties.
  i18n.defaultLocale = vars.locale;

  # Configure keymap in X11
  services.xserver.xkb = {
    layout = "us";
    variant = "";
  };

  # udev rules
  # brightness: group video can edit some /sys/class files
  services.udev.extraRules = ''
    ACTION=="add", SUBSYSTEM=="backlight", RUN+="${pkgs.coreutils}/bin/chgrp video $sys$devpath/brightness"
    ACTION=="add", SUBSYSTEM=="backlight", RUN+="${pkgs.coreutils}/bin/chmod g+w $sys$devpath/brightness"
    ACTION=="add", SUBSYSTEM=="leds", RUN+="${pkgs.coreutils}/bin/chgrp video $sys$devpath/brightness"
    ACTION=="add", SUBSYSTEM=="leds", RUN+="${pkgs.coreutils}/bin/chmod g+w $sys$devpath/brightness"
  '';

  # Garbage cleanup
  nix.gc = {
    automatic = true;
    options = "--delete-older-than 28d";
  };


  # User
  # ----

  # Don't forget to set a password with 'passwd'.
  users.users = {
    "${vars.user.username}" = {
      isNormalUser = true;
      description = vars.user.fullname;
      extraGroups = [ "networkmanager" "video" "wheel" ];
      packages = with pkgs; vars.user.pkgs;
    };
  };

  # Environment variables
  environment.sessionVariables = {
    # Various
    NIXOS_OZONE_WL = "1";
    PYTHONTRACEMALLOC = "1";

    # Cursor
    XCURSOR_THEME = "breeze_cursors";
    XCURSOR_SIZE = "24";
    #HYPRCURSOR_SIZE = "24";
    #WLR_NO_HARDWARE_CURSORS = "1";

    # Nvidia specific (in hardware config)
    #LIBVA_DRIVER_NAME = "nvidia";
    #__GLX_VENDOR_LIBRARY_NAME = "nvidia";
    #GBM_BACKEND = "nvidia-drm";

    # Plasma/QT settings
    PLASMA_USE_QT_SCALING = "1";
    QT_AUTO_SCREEN_SCALE_FACTOR = "1";
    QT_SCALE_FACTOR = "1.0";
    QT_QPA_PLATFORM = "wayland;xcb";
    QT_WAYLAND_DISABLE_WINDOWDECORATION = "1";
    # Enable only when using TWM
    QT_QPA_PLATFORMTHEME = "qt6ct";
    # Kind of works; except some icons
    #QT_STYLE_OVERRIDE = "Breeze";
  };


  # Progams
  # -------

  # Gnome config
  programs.dconf = {
    enable = true;
    profiles.user.databases = [{
      lockAll = false; # prevents overriding
      settings = {
        "org/gnome/desktop/interface" = {
          color-scheme = "prefer-light";
          gtk-theme = "breeze";
          icon-theme = "breeze";
        };
      };
    }];
  };

  # GnuPG
  programs.gnupg.agent = {
     enable = true;
     enableSSHSupport = false;
  };
  
  # Network diagnostic tool
  programs.mtr.enable = true;

  # Allow running user programs like python, etc.
  programs.nix-ld.enable = true;

  # Steam
  programs.steam = {
    enable = true;
    remotePlay.openFirewall = false; # Steam Remote Play
    dedicatedServer.openFirewall = false; # Source Dedicated Server
    localNetworkGameTransfers.openFirewall = true; # Steam Local Network Game Transfers
  };


  # Services
  # --------

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

  # Bluetooth
  hardware.bluetooth = {
    enable = true;
    powerOnBoot = true;
    settings = {
      General = {
        Enable = "Source,Sink,Media,Socket";
      };
    };
  };

  # Desktop Environments
  services = {
    # Gnome
    #displayManager.gdm.enable = true;
    #desktopManager.gnome.enable = true;
    # KDE Plasma
    #displayManager.sddm.enable = true;
    #displayManager.sddm.wayland.enable = true;
    desktopManager.plasma6.enable = true;
  };

  # Discovery
  services.avahi = {
    enable = true;
    nssmdns4 = true;
    openFirewall = true;
  };

  # Firmware
  # disabled here but added to pkgs for manual
  services.fwupd.enable = false;

  # Logind Settings
  services.logind.settings.Login = {
    HandleLidSwitch = "suspend";
    HandleLidSwitchExternalPower = "ignore";
    HandleLidSwitchDocked = "ignore";
  };

  # Networking
  services.fail2ban.enable = true;
  networking = {
    hostName = vars.network.hostname;
    networkmanager.enable = true;
    wireguard.enable = true;
    nftables.enable = true;
    firewall = {
      enable = true;
      allowedTCPPorts = vars.network.firewall.tcp_ports;
      allowedUDPPorts = vars.network.firewall.udp_ports;
    };
  };

  # Power Profiles (tuned)
  services.tuned.enable = true;
  services.upower.enable = true;

  # Printing (cups)
  services.printing = {
    enable = true;
    browsed.enable = false;
  };

  # Secure Shell
  services.openssh = {
    enable = true;
    ports = [ 22 ];
    openFirewall = true;
    settings = {
      PasswordAuthentication = false;
      PermitRootLogin = "no";
    };
  };

  # Send Mail
  programs.msmtp = {
    enable = true;
    setSendmail = true;
    accounts = {
      default = {
        auth = true;
        tls = vars.smtp.tls;
        tls_starttls = vars.smtp.tls_starttls;
        port = vars.smtp.port;
        host = vars.smtp.host;
        from = vars.smtp.from;
        user = vars.smtp.user;
        password = vars.smtp.password;
      };
    };
  };

  # Sync
  #services.syncthing = {
  #   enable = true;
  #   group = "users";
  #   user = "${vars.user.username}";
  #   configDir = "/home/${vars.user.username}/.local/state/syncthing";
  #};

  # Virtualisation
  virtualisation.virtualbox.host.enable = true;
  users.extraGroups.vboxusers.members = [ "${vars.user.username}" ];

  # X11
  #services.xserver.enable = false;


  # Security
  # --------

  # Policy kit
  security.polkit.enable = true;
 
  # Wallet
  security.pam.services.login.kwallet.enable = true;


  # Other
  # -----

  # 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 = "26.05"; # Did you read the comment?

}