# Copyright 2006 Michael Lewis
# Distributed under the terms of the GNU General Public License v2

require "Hand"

class Deck
	
	# Pass it -1 to have an infinite sized deck	
	def initialize( nDecks )
		@nDecks = nDecks
		@deck = Array.new
		@usedDeck = Array.new
		( nDecks == -1 ? 1 : nDecks * 4 ).times do
			@deck << 11
			4.times { @deck << 10 }
			(2..9).each { |value| @deck << value }
		end
	end

	def to_s
		@deck.join ", "	
	end

	def shuffle
		if !( @nDecks == -1 )
			@deck = @deck + @usedDeck
			@usedDeck.clear
			newDeck = Array.new
			while !@deck.empty?
				newDeck << @deck.slice!( rand( @deck.length ) )
			end
			@deck = newDeck
		end
		return
	end

	def deal( hand )
		if @nDecks == -1 
			hand.add_card @deck[ rand( 13 ) ]
		else
			hand.add_card @deck.pop
		end
		return
	end

	def reclaim_cards( hand )
		if !( @nDecks == -1 )
			@usedDeck = @usedDeck + hand
		end
		hand.clear
		return
	end

	def cards_left
		if @nDecks == -1
			return 9999
		else
			return @deck.length
		end
	end
end