defmodule QRNBUGenerator do
  @moduledoc """
  Generator module for NBU QR code data strings.

  This module generates the formatted data strings according to NBU specifications.
  It does NOT render QR code images - use a separate QR rendering library for that.
  """

  @doc """
  Generate QR data string from raw data.

  ## Parameters
  - `data` - The formatted data string
  - `opts` - Options (reserved for future use)

  ## Returns
  - `{:ok, data_string}` - The data string ready for QR encoding
  - `{:error, reason}` - Error message

  ## Example
      iex> data = "BCD\\n002\\n1\\nUCT\\n...\\n"
      iex> QRNBUGenerator.generate(data)
      {:ok, "BCD\\n002\\n1\\nUCT\\n...\\n"}
  """
  @spec generate(binary(), keyword()) :: {:ok, binary()} | {:error, binary()}
  def generate(data, _opts \\ []) when is_binary(data) do
    {:ok, data}
  end
end