# blackjack.py
#
# Jim M, Nov 2008

""" Way too much playing around with Card() and Hand() classes. """

from card import Card
from hand import Hand
from doctest import testmod

Win  =  'win'
Lose =  'lose'
Draw =  'draw'

class UserPlayer:
  """A black jack player that decides what to do from user input."""
  def getHitMe(self, myHand, houseHand, houseHoleHidden):
    """Return True or False after asking the player if he wants another card."""
    import sys
    answer = raw_input("  Another card? (yes|no|quit) ")
    firstCharacter = answer[0].lower()
    if firstCharacter == 'q':
      print "Goodbye, you quitter you."
      sys.exit(0)
    return firstCharacter == 'y'


class RandomPlayer:
  def getHitMe(self, myHand, houseHand, houseHoleHidden):
    """Return True or False with 50/50 probability."""
    from random import randrange
    return randrange(2)==0


def playBlackJack(player=None, verbose=True):
  if verbose:
    print
    print "-- Black Jack --"
  if player==None:
    player = UserPlayer()
  yourHand  = Hand(2)
  houseHand = Hand(2)
  if verbose:
    print "  Your cards are: "
    yourHand.printHand(indent=4)
  if houseHand.isBlackJack():
    if verbose:
      print "  The house has: "
      houseHand.printHand(indent=4)
    if yourHand.isBlackJack():
      if verbose: print "  Both you and the house have blackjack.  It's a draw."
      return Draw
    else:
      if verbose: print "  The house has blackjack.  You lose."
      return Lose
  else:
    if verbose: print "  The house card showing is: " + str(houseHand.getCard())
    if yourHand.isBlackJack():
      if verbose: print "  You have blackjack, and win."
      return Win
    houseHoleHidden = True
    hitMe = True
    while True:
      if hitMe:
        if verbose: print "  Your total is " + str(yourHand.blackJackValue())
        hitMe = player.getHitMe(yourHand, houseHand, houseHoleHidden)
        if not hitMe:
          if verbose: print "  You stand pat."
      if hitMe:
        yourHand.addCard()
        if verbose: print "  Your new card: " + str(yourHand.getCard())
        if yourHand.isBust():
          if verbose: print "  You're busted."
          return Lose
      if houseHoleHidden:
        if verbose: print "  The house's hidden card is: " + str(houseHand.getCard(1))
        houseHoleHidden = False
      if verbose: print "  The house total is " + str(houseHand.blackJackValue())
      if not hitMe:
        if houseHand.blackJackValue() > yourHand.blackJackValue():
          if verbose: print "  The house hand is closer to 21, so you lose."
          return Lose
        if houseHand.blackJackValue() == yourHand.blackJackValue() and \
           houseHand.blackJackValue() >= 17 :
          if verbose: print "  The house stands, and has the same as you.  Draw."
          return Draw
      if houseHand.blackJackValue() < 17 or \
         houseHand.blackJackValue() < yourHand.blackJackValue():
        houseHand.addCard()
        if verbose: print "  House's new card: " + str(houseHand.getCard())
        if houseHand.isBust():
          if verbose: print "  The house is busted, so you win."
          return Win

def playRandomGames(howMany):
  """An example of running a bunch of games."""
  print
  print "Playing %i random games..." % howMany
  stats = {Win: 0, Lose: 0, Draw: 0}
  for i in range(howMany):
    player = RandomPlayer()
    result = playBlackJack(player, False)
    # print "   " + result
    stats[result] += 1
  print "Done."
  format = "  %6s  %6s  %6s "
  print format % ('win', 'lose', 'draw')
  print format % ('-'*6, '-'*6, '-'*6)
  print "  %6i  %6i  %6i " % (stats[Win], stats[Lose], stats[Draw])


if __name__=="__main__": _tests()
  testmod()
  playBlackJack()
  playRandomGames(200)