{ lib, config, inputs, ... }:

let
  username = config.defaultUser or "henrov";

  modulesPath = ./generated/modules;
  imported = inputs.import-tree modulesPath;

  moduleSwitches = import ../../../assets/system/conf/modules.conf;

  # STEP 1: evaluate all modules first
  evaluatedModules =
    map (m:
      if builtins.isFunction m
      then m { inherit lib config; }
      else m
    ) imported.imports;

  # STEP 2: attach names safely, stripping .nix
  modulesWithNames =
    map (m: {
      name =
        if m ? _file
        then builtins.replaceSuffix ".nix" "" (builtins.baseNameOf m._file)
        else "unknown";
      value = m;
    }) evaluatedModules;

  # STEP 3: filter enabled modules
  enabledModules =
    builtins.filter (m: moduleSwitches.${m.name} or false) modulesWithNames;

  # STEP 4: extract final module values
  moduleList = map (m: m.value) enabledModules;

in
{
  networking.hostName = "traveldroid";
  system.stateVersion = "26.05";

  imports = [
    ./boot.nix
    ./hardware-configuration.nix
  ];

  home-manager.users =
    lib.mkMerge moduleList;

  # debug: list of loaded modules
  environment.variables.LOADED_MODULES =
    builtins.concatStringsSep "," (map (m: m.name) enabledModules);
}