defmodule ExCows do
  @moduledoc """
  Get ASCII cows
  """

  @doc """
  Returns all cows as a list
  """
  def get do
    File.read!("lib/cows.txt")
    |> to_list
  end

  @doc """
  Returns a random cow
  """
  def random do
    get
    |> Enum.take_random(1)
    |> hd
  end

  defp to_list(cows_string) do
    cows_string
    |> String.replace(~r/\n$/, "")
    |> String.split("\n\n\n")
  end
end