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from __future__ import annotations
from enum import Enum
from blackjack.card import CardRank, CardSuit, Card
from blackjack.dealer import Dealer
from blackjack.player import Player
import random
class BlackjackResult(Enum):
DEALER_WIN = 0
PLAYER_WIN = 1
BLACKJACK = 2
TIE = 3
class InvalidMoveException(Exception):
pass
class Blackjack:
def __init__(self):
self.__deck: list(Card) = []
for suit in CardSuit:
for rank in CardRank:
self.__deck.append(Card(suit, rank))
random.shuffle(self.__deck)
self.dealer = Dealer()
self.player = Player()
# When all the players have placed their bets, the dealer gives one card face up to each
# player in rotation clockwise, and then one card face up to themselves.
self.dealer.hit(self.__deck)
self.player.hit(self.__deck)
# Another round of cards is then dealt face up to each player, but the dealer takes the
# second card face down. Thus, each player except the dealer receives two cards face up, and
# the dealer receives one card face up and one card face down.
self.dealer.hit(self.__deck)
self.player.hit(self.__deck)
def hit(self) -> None:
self.player.hit(self.__deck)
def stand(self) -> None:
self.player.stand()
def play_dealer(self) -> None:
self.dealer.play(self.__deck)
def is_over(self) -> bool:
return self.player.hand.is_bust() or self.player.has_stood() or self.player.hand.is_natural()
def get_outcome(self) -> BlackjackResult:
# Check for naturals...
is_dealer_natural = self.dealer.hand.is_natural()
is_player_natural = self.player.hand.is_natural()
if is_player_natural: # If the player has a natural...
if is_dealer_natural: # But the dealer also has a natural...
return BlackjackResult.TIE # Then it's a tie!
return BlackjackResult.BLACKJACK # Otherwise, the player wins with a blackjack!
if is_dealer_natural: # If only the dealer has a natural...
return BlackjackResult.DEALER_WIN # The dealer wins
if self.player.hand.is_bust(): # If the player has bust (regardless of if the dealer bust)...
return BlackjackResult.DEALER_WIN # The dealer wins
if self.dealer.hand.is_bust(): # If the dealer has bust (but the player hasn't)...
return BlackjackResult.PLAYER_WIN # The player wins
player_value = self.player.hand.get_optimal_value()
dealer_value = self.dealer.hand.get_optimal_value()
if player_value > dealer_value:
return BlackjackResult.PLAYER_WIN
elif player_value < dealer_value:
return BlackjackResult.DEALER_WIN
else:
return BlackjackResult.TIE
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