defmodule Chess.Board do
  def output(board) do
    Enum.map(0..7, fn (rank) ->
      Enum.map(0..7, fn (file) ->
        board["#{file},#{rank}"]
      end)
    end)
  end

  def default do
    %{
      "0,7" => %{type: :rook,   colour: :black},
      "1,7" => %{type: :knight, colour: :black},
      "2,7" => %{type: :bishop, colour: :black},
      "3,7" => %{type: :queen,  colour: :black},
      "4,7" => %{type: :king,   colour: :black},
      "5,7" => %{type: :bishop, colour: :black},
      "6,7" => %{type: :knight, colour: :black},
      "7,7" => %{type: :rook,   colour: :black},

      "0,6" => %{type: :pawn, colour: :black},
      "1,6" => %{type: :pawn, colour: :black},
      "2,6" => %{type: :pawn, colour: :black},
      "3,6" => %{type: :pawn, colour: :black},
      "4,6" => %{type: :pawn, colour: :black},
      "5,6" => %{type: :pawn, colour: :black},
      "6,6" => %{type: :pawn, colour: :black},
      "7,6" => %{type: :pawn, colour: :black},

      "0,1" => %{type: :pawn, colour: :white},
      "1,1" => %{type: :pawn, colour: :white},
      "2,1" => %{type: :pawn, colour: :white},
      "3,1" => %{type: :pawn, colour: :white},
      "4,1" => %{type: :pawn, colour: :white},
      "5,1" => %{type: :pawn, colour: :white},
      "6,1" => %{type: :pawn, colour: :white},
      "7,1" => %{type: :pawn, colour: :white},

      "0,0" => %{type: :rook,   colour: :white},
      "1,0" => %{type: :knight, colour: :white},
      "2,0" => %{type: :bishop, colour: :white},
      "3,0" => %{type: :queen,  colour: :white},
      "4,0" => %{type: :king,   colour: :white},
      "5,0" => %{type: :bishop, colour: :white},
      "6,0" => %{type: :knight, colour: :white},
      "7,0" => %{type: :rook,   colour: :white}
    }
  end
end