class Card
  attr :no
  attr :category
  attr :rarity
  attr :name
  attr :sub_title
  attr :power
  attr :ds
  attr :ps
  attr :advance
  attr :job
  attr :illustrator
  attr :timing
  attr :text
  attr :flavor_text

  def initialize(line)
    @no = line[0]
	@rarity = line[1].nil? ? 0 : line[1].size / 2
	@illustrator = line[2]
	@name = line[3]
	@category = line[4]
	@sub_title = line[5]
	@power = line[6].nil? ? nil : line[6].to_i
	@advance = line[7].nil? ? [] : line[7].split(/ /)
	@ds = line[8].nil? ? nil : line[8].to_i
	@ps = line[9].nil? ? nil : line[9].to_i
	@timing = line[10]
	@job = line[11].nil? ? [] : line[11].split(/ /)
	@text = line[12]
	@flavor_text = line[13]
  end
end

class Cards
  include Enumerable
  @data = []

  attr_accessor :sort_key

  def initialize
    path = File.dirname(__FILE__)
    file = path + '/hayate_tcg.csv'
    cache = path + '/cache/hayate_tcg.csv.cache'
    if File.exists?(cache) && File.mtime(file) <= File.mtime(cache)
      get_cache(cache)
	else
      load_csv(file)
      set_cache(cache)
    end
  end

  def set_sort_key(key)
    @sort_key = key
  end

  def each
    i = 0
    @data.sort_by do |x|
	  [((@sort_key+"").size == 0 || x.__send__(@sort_key).nil?) ? 0 : x.__send__(@sort_key), i += 1]
    end.each{|x| yield x}
  end

  def [](key)
    @data.find(){|card| card.no == key}
  end

private 
  def load_csv(file)
    require 'csv'
    require 'kconv'
  
    data = CSV.open(file, 'r')
    data.shift
    @data = data.map do |line|
  	  Card.new(line.map{|x| x.nil? ? nil : x.toeuc})
    end
  end

  def set_cache(file)
    require 'pstore'
	db = PStore.new(file)
    db.transaction do
      db["cards"] = @data
	  db["last_modified"] = Time.now
    end
  end

  def get_cache(file)
    require 'pstore'
    db = PStore.new(file)
    db.transaction do
	  @data = db["cards"]
    end
  end
end