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

let
  username = config.users.users.defaultUser or "henrov";
  homeDir  = config.home.homeDirectory or "/home/${username}";
  assetPath = "${config.flakeRoot}/assets/copy_2_home";
in
{
  _module.args.hmUsers = {
    ${username} = {
      # Ensure rsync is available for the activation script
      home.packages = [ pkgs.rsync ];

      # Activation script: copy assets after all other Home Manager activations
      home.activation.copyAssets = lib.hm.dag.entryAfter [ "writeBoundary" ] ''
        echo "Copying assets from ${assetPath} to ${homeDir} ..."

        if [ ! -d "${assetPath}" ]; then
          echo "Error: source directory ${assetPath} does not exist"
          exit 1
        fi

        mkdir -p "${homeDir}"

        # Copy recursively, preserve symlinks, overwrite existing files
        rsync -a --no-owner --no-group "${assetPath}/" "${homeDir}/"

        echo "Done copying assets."
      '';
    };
  };
}