class Session
  attr_reader :difficulty_name, :difficulty_level, :attempts_total, :hints_total

  attr_accessor :player_name, :attempts_used, :hints_used

  def initialize
    @attempts_used = 0
    @hints_used = 0
  end

  def difficulty_manager(difficulty)
    if DifficultyLevels::DIFFICULTY_LEVELS.include?(difficulty)
      add_difficulty(DifficultyLevels::DIFFICULTY_LEVELS[difficulty])
    end
    raise WrongDifficulty unless DifficultyLevels::DIFFICULTY_LEVELS.include?(difficulty)
  end

  def save_session_statistic
    File.open(Files::STATS_FILE, 'a') do |file|
      file.write(to_yaml)
    end
  end

  private

  def add_difficulty(difficulty)
    @difficulty_name = difficulty[:name]
    @difficulty_level = difficulty[:level]
    @attempts_total = difficulty[:attempts_total]
    @hints_total = difficulty[:hints_total]
  end
end