defmodule ExAdmin.DslUtils do
  @moduledoc false

  def add_to_attribute(mod, attr_name, key, value) do
    items = Module.get_attribute(mod, attr_name)
    Module.put_attribute(mod, attr_name, [{(key),  (value)} | items])
  end
  
  def escape(var) do
    Macro.escape(var, unquote: true)
  end

  def fun_to_opts(opts, fun) do
    case {opts, fun} do
      {fun, _} when is_function(fun) -> 
        [fun: fun]
      {opts, nil} ->  
        opts
      {opts, fun} ->
        [{:fun, fun} | opts]
    end
    |> Enum.into(%{})
  end
end