class Game
  attr :repository, :id, :board, :player, :winner

  def initialize(repository:, id:, board:, player:)
    @id         = id
    @repository = repository
    @board      = board
    @player     = player
  end

  def winner
    RUNS_OF_THREE.each do |tiles|
      %i(player_1 player_2).each do |player|
        return player if tiles.all? { |at| fetch_tile(at) == player }
      end
    end
    nil
  end

  def finished?
    winner ? true : false
  end

  def make_move!(as:, at:)
    MakeMoveCommand.new(game: self, player: as, position: at).apply!
  end

  def fetch_tile(position)
    row, col = BOARD_MAP.fetch(position)
    board.fetch(row).fetch(col)
  end

  def apply_move!(position:)
    row, col = BOARD_MAP.fetch(position)
    board.fetch(row)[col] = player
    @player = { player_1: :player_2, player_2: :player_1 }.fetch(player)
    repository.store self
  end

  BOARD_MAP = {
    top_left:     [0, 0],
    top:          [0, 1],
    top_right:    [0, 2],
    left:         [1, 0],
    center:       [1, 1],
    right:        [1, 2],
    bottom_left:  [2, 0],
    bottom:       [2, 1],
    bottom_right: [2, 2],
  }

  RUNS_OF_THREE = [
    [:top_left,    :center, :bottom_right],
    [:top_right,   :center, :bottom_left],
    [:top_left,    :left,   :bottom_left],
    [:top,         :center, :bottom],
    [:top_right,   :right,  :bottom_right],
    [:top_left,    :top,    :top_right],
    [:left,        :center, :right],
    [:bottom_left, :bottom, :bottom_right],
  ]
end