# frozen_string_literal: true

module Codebreaker
  module FileStore    
    FILE_DIRECTORY = "statistics"
    FILE_NAME = "statistics.yml"

    def save_file(game)
      validate_state(game.state, :win)
      score = load_file
      score << fill_game_data(game)
      File.write(storage_path, YAML.dump({ codebrakers: score }))
    end

    def load_file
      create_storage unless storage_exists?
      (YAML.load_file(storage_path) || {})[:codebrakers] || []
    end

    def statistics
      load_file.each.sort_by { |game| [game[:attempts], game[:used_hints], game[:used_attempts]] }
    end
    
    def self.statistics
      load_file.each.sort_by { |game| [game[:attempts], game[:used_hints], game[:used_attempts]] }
    end

    private

    def create_storage
      FileUtils.mkdir_p(FILE_DIRECTORY)
      File.open(storage_path, "w") unless File.exist?(storage_path)
    end

    def storage_path
      File.join(FILE_DIRECTORY, FILE_NAME)
    end

    def storage_exists?
      Dir.exist?(FILE_DIRECTORY) && File.exist?(storage_path)
    end

    def fill_game_data(game)
      game_statistic = {}
      game_statistic[:name] = game.user.name
      game_statistic[:difficulty] = game.user.difficulty
      game_statistic[:attempts] = Constants::DIFFICULTIES[game.user.difficulty][:attempts]
      game_statistic[:hints] = Constants::DIFFICULTIES[game.user.difficulty][:hints]
      game_statistic.merge(user_data(game))
    end

    def user_data(game)
      user = {}
      user[:used_attempts] = used_attempts(game)
      user[:used_hints] = used_hints(game)
      user
    end

    def used_attempts(game)
      Constants::DIFFICULTIES[game.user.difficulty][:attempts] - game.user.attempts
    end

    def used_hints(game)
      Constants::DIFFICULTIES[game.user.difficulty][:hints] - game.user.hints
    end
  end
end