defmodule Etcd.Node do
  @derive [Access,Collectable]
  defstruct [
    dir: false,
    key: nil,
    nodes: nil,
    createdIndex: nil,
    modifiedIndex: nil,
    ttl: nil,
    expiration: nil,
  ]

  def from_map(map) do
      load_nodes(Enum.into(map, %Etcd.Node{}, fn({k,v})->{String.to_existing_atom(k),v} end))
  end

  defp load_nodes(%{dir: false} = node), do: node
  defp load_nodes(%{dir: true} = node), do: %{node | nodes: load_nodes(node.nodes) }
  defp load_nodes(nil), do: nil
  defp load_nodes(lst) when is_list(lst), do: Enum.map(lst, &from_map/1)
end