game.ex

defmodule ElixirBaseball.Game do
  def play_ball do
    IO.puts inspect(play_inning([], 0, 0))
  end

  def play_inning(top_of_inning, _, _) when length(top_of_inning) < 9 do
    bottom_of_inning = [get_inning | top_of_inning]
    play_inning(bottom_of_inning,
         total_score(bottom_of_inning, :home),
         total_score(bottom_of_inning, :away))
  end

  def play_inning(top_of_inning, tie_score, tie_score) do
    bottom_of_inning = [get_inning | top_of_inning]
    play_inning(bottom_of_inning,
         total_score(bottom_of_inning, :home),
         total_score(bottom_of_inning, :away))
  end

  def play_inning(complete_innings, _, _), do: complete_innings

  def total_score(innings, team) do
    Enum.reduce(innings, 0, &(Map.get(&1, team) + &2))
  end

  def get_inning do
    %{home: get_score, away: get_score}
  end

  def get_score, do: :rand.uniform(10) - 1
end