gistfile1.txt

class RankedHand
  attr_reader :category, :cards, :score, :description

  RANKINGS = { royal_flush: "19", straight_flush: "18", four_of_a_kind: "17",
    full_house: "16", flush: "15", straight: "14", three_of_a_kind: "13",
    two_pair: "12", pair: "11", high_card: "10"
  } #for scoring purposes, it's necessary that these ranking values be 2 chars long

  DESCRIPTIONS = { royal_flush: "Royal Flush", straight_flush: "Straight Flush",
    four_of_a_kind: "Four of a Kind", full_house: "Full House",
    flush: "Flush", straight: "Straight", three_of_a_kind: "Three of a Kind",
    two_pair: "Two Pair", pair: "Pair", high_card: "High Card"
  }

  def initialize(hand, category)
    @cards = hand
    @category = category
    @score = generate_score(category)
    @description = DESCRIPTIONS[category]
  end

  private

  #Generated by concatenating the hand ranking with tiebreak values to form a 12 digit integer for determining the highest hand score amongst players.
  def generate_score(category) #assumes cards are already sorted by values descending
    tiebreak = case category
      when :royal_flush
        [] #no tiebreak necessary
      when :straight_flush, :straight, :four_of_a_kind
        [
          cards[4].value_string
        ]
      when :full_house
        [
          cards[0].value_string, #trips
          cards[3].value_string  #pair
        ]
      when :three_of_a_kind
        [
          cards[0].value_string, #trips
          cards[3].value_string, #high card
          cards[4].value_string  #high card
        ]
      when :two_pair
        [
          cards[0].value_string, #top pair
          cards[2].value_string, #bottom pair
          cards[4].value_string  #high card
        ]
      when :pair
        [
          cards[0].value_string, #pair
          cards[2].value_string, #high card
          cards[3].value_string, #high card
          cards[4].value_string  #high card
        ]
      else
        [
          cards[0].value_string, #high card
          cards[1].value_string, #high card
          cards[2].value_string, #high card
          cards[3].value_string, #high card
          cards[4].value_string  #high card
        ]
      end

    (RANKINGS[category] + tiebreak.join).ljust(12,"0").to_i
  end
end