module Codebreaker
  class StatsStorage
    PATH = './db/data.yml'.freeze

    def load
      File.file?(PATH) ? YAML.load_file(PATH) : []
    end

    def add(stat)
      stats = load
      stats << stat
      save(stats)
    end

    private

    def save(stats)
      Pathname(PATH).dirname.mkpath
      File.write(PATH, stats.to_yaml)
    end
  end
end