{ lib, pkgs, ... }: {
  imports = [
    ./fleet.nix
    ./utils/bento.nix
    ./utils/modules/sops.nix
    ./utils/modules/lego/lego.nix
    ./utils/modules/nginx.nix

    ./utils/modules/autoupgrade.nix
    ./utils/modules/promtail
    ./utils/modules/borgbackup.nix

    # fw
    ./modules/network-prefix.nix
    ./modules/networking.nix
    ./modules/setupnetwork.nix
    ./modules/firewall.nix
    # ./modules/dhcp4.nix
    # ./modules/unbound.nix

    ./modules/dnsmasq.nix
    ./modules/avahi.nix
    ./modules/openconnect.nix
    ./modules/wireguard.nix
    ./modules/podman.nix
    ./modules/omada.nix
    ./modules/ddclient.nix
    ./utils/modules/victoriametrics
    # ./modules/wol.nix


    # microvm
    ./modules/microvm.nix
    ./modules/gitea-vm.nix
    # ./modules/vscode-server.nix  # Add VS Code Server microvm

    ./modules/ai-mailer.nix
    # ./modules/wazuh.nix

    # web
    ./modules/web

    # git
    ./modules/gitea.nix
    # ./modules/fwmetrics.nix

    # ha customers
    ./modules/ha-customers

    ./modules/firefox-sync.nix
    ./modules/fivefilters.nix
    ./modules/pyload.nix

    # home assistant
    ./modules/home-assistant
    ./modules/deconz.nix
    # ./modules/mopidy.nix
    # ./modules/mosquitto.nix
    # ./modules/snapserver.nix
    ./modules/lms.nix

    # gaming
    # ./modules/palworld.nix
    # ./modules/ark-survival-evolved.nix
    ./modules/foundry-vtt.nix

    # setup network
    ./modules/setupnetwork.nix
    ./modules/set-nix-channel.nix # Automatically manage nix-channel from /var/bento/channel
    ./modules/grafana-monitor.nix # Grafana online status monitor
 
 
    ./hardware-configuration.nix
  ];

  networkPrefix = "10.42";

  nixpkgs.overlays = [
    (import ./utils/overlays/packages.nix)
  ];

  nixpkgs.config.permittedInsecurePackages = [
    "openssl-1.1.1w"
  ];

  nixpkgs.config.allowUnfreePredicate = pkg: builtins.elem (lib.getName pkg) [
    "mongodb"
    "ai-mailer"
    "filebot"
  ];

  # Intel N100 Graphics Support for hardware transcoding
  hardware.graphics = {
    enable = true;
    extraPackages = with pkgs; [
      intel-media-driver    # VAAPI driver (iHD) for modern Intel GPUs
      vpl-gpu-rt           # Intel VPL/QSV runtime for Gen 12+ (N100)
      intel-compute-runtime # OpenCL support for tone-mapping
    ];
  };

  hardware.enableRedistributableFirmware = true;

  time.timeZone = "Europe/Vienna";

  services.logind.extraConfig = "RuntimeDirectorySize=2G";

  sops.age.sshKeyPaths = [ "/etc/ssh/ssh_host_ed25519_key" ];
  sops.defaultSopsFile = ./secrets.yaml;
  
  environment.systemPackages = with pkgs; [
    bento
    conntrack-tools     # view network connection states
    ethtool             # manage NIC settings (offload, NIC feeatures, ...)
    git
    htop                # to see the system load
    tcpdump             # view network traffic
    vim                 # my preferred editor
    wol
    inotify-tools
  ];

  nix = {
    settings = {
      auto-optimise-store = true;
      # Build performance optimizations
      max-jobs = 4;
      cores = 4;
      # Enable eval caching for faster rebuilds
      eval-cache = true;
      # Use binary caches to avoid unnecessary rebuilds
      substituters = [
        "https://cache.nixos.org"
      ];
      trusted-public-keys = [
        "cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY="
      ];
    };
    gc = {
      automatic = true;
      dates = "weekly";
      options = "--delete-older-than 60d";
    };
    # Free up to 1GiB whenever there is less than 100MiB left.
    extraOptions = ''
      min-free = ${toString (100 * 1024 * 1024)}
      max-free = ${toString (1024 * 1024 * 1024)}
    '';
  };

  services.tlp = {
    enable = true;
    settings = {
      CPU_SCALING_GOVERNOR_ON_AC = "performance"; # powersave or performance
      CPU_ENERGY_PERF_POLICY_ON_AC = "performance"; # power or performance
      # CPU_MIN_PERF_ON_AC = 0;
      # CPU_MAX_PERF_ON_AC = 100; # max 100
    };
  };

  systemd.services = {
    powertop = {
      wantedBy = [ "multi-user.target" ];
      after = [ "multi-user.target" ];
      description = "Powertop tunings";
      path = [ pkgs.kmod ];
      serviceConfig = {
        Type = "oneshot";
        RemainAfterExit = "yes";
        ExecStart = "${pkgs.powertop}/bin/powertop --auto-tune && for dev in /sys/class/net/*; do echo on > \"$dev/device/power/control\"; done'";
      };
    };
  };

  boot.tmp.cleanOnBoot = true;
  zramSwap.enable = true;
  networking.hostName = "fw";
  services.openssh.enable = true;
  users.users.root.openssh.authorizedKeys.keys = [
    "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDN/2SAFm50kraB1fepAizox/QRXxB7WbqVbH+5OPalDT47VIJGNKOKhixQoqhABHxEoLxdf/C83wxlCVlPV9poLfDgVkA3Lyt5r3tSFQ6QjjOJAgchWamMsxxyGBedhKvhiEzcr/Lxytnoz3kjDG8fqQJwEpdqMmJoMUfyL2Rqp16u+FQ7d5aJtwO8EUqovhMaNO7rggjPpV/uMOg+tBxxmscliN7DLuP4EMTA/FwXVzcFNbOx3K9BdpMRAaSJt4SWcJO2cS2KHA5n/H+PQI7nz5KN3Yr/upJN5fROhi/SHvK39QOx12Pv7FCuWlc+oR68vLaoCKYhnkl3DnCfc7A7"
    "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIIRQuPqH5fdX3KEw7DXzWEdO3AlUn1oSmtJtHB71ICoH Generated By Termius"
  ];

  # backups
  borgbackup.repo = "u149513-sub2@u149513-sub2.your-backup.de:borg";
  services.borgbackup.jobs.default.paths = lib.mkAfter [
    "/var/lib/microvms/persist/web-02/var/backup"
  ];

  system.stateVersion = "22.05";
}