{ config, pkgs, lib, ... }:

let
  # ── Adjust these to your NAS settings ──────────────────────────────────────────
  nasServer     = "192.168.1.100";          # your NAS IP or hostname
  nasExportPath = "/export/docker-volumes"; # path on the NAS
  nasMountPoint = "/mnt/nas";               # where to mount inside VM

  # ── Where we drop your Compose file and run it ────────────────────────────────
  composeDir  = "/etc/docker-compose-app";
  composeText = lib.readFile ./docker-compose.yml;
in {
  ##############################################################################
  # A) NETWORKING
  #    (If you want DHCP, remove this block and let cloud-init assign an IP.)
  ##############################################################################
  # networking.interfaces.enp0s25 = {
  #   useDHCP = false;
  #   ipv4.addresses = [{
  #     address = "192.168.1.50";
  #     prefixLength = 24;
  #   }];
  #   ipv4.gateway = "192.168.1.1";
  #   # optional: ipv4.dns = [ "1.1.1.1" "8.8.8.8" ];
  # };

  ##############################################################################
  # B) MOUNT YOUR NAS VIA NFS
  ##############################################################################
  # fileSystems."${nasMountPoint}" = {
  #   device = "${nasServer}:${nasExportPath}";
  #   fsType = "nfs";
  #   options = [ "defaults" "nofail" "x-systemd.requires=network-online.target" ];
  # };
  # fileSystems."${nasMountPoint}".requiredForBoot = false;

  ##############################################################################
  # C) INSTALL DOCKER & DOCKER-COMPOSE
  ##############################################################################
  environment.systemPackages = with pkgs; [
    docker
    docker-compose
  ];
  services.docker.enable = true;

  ##############################################################################
  # D) DROP IN YOUR docker-compose.yml
  ##############################################################################
  # systemd.tmpfiles.rules = [
  #   # Ensure directory exists before we write the file.
  #   "D! ${composeDir} 0755 root root - -"
  # ];
  # environment.etc."docker-compose-app/docker-compose.yml".text = composeText;

  ##############################################################################
  # E) RUN DOCKER-COMPOSE AS A SYSTEMD SERVICE
  ##############################################################################
  # systemd.services.dockerComposeApp = {
  #   description = "Auto-start Docker-Compose stack for home server";
  #   after = [ "network-online.target" "docker.service" ];
  #   wants = [ "network-online.target" "docker.service" ];

  #   serviceConfig = {
  #     WorkingDirectory = composeDir;
  #     ExecStart = "${pkgs.docker-compose}/bin/docker-compose -f ${composeDir}/docker-compose.yml up";
  #     ExecStop  = "${pkgs.docker-compose}/bin/docker-compose -f ${composeDir}/docker-compose.yml down";
  #     Restart = "always";
  #     RestartSec = 10;
  #   };

  #   wantedBy = [ "multi-user.target" ];
  # };




}