import random
import Ledger

def convertNumberToCard(cardNumber):
    # Cards index from 0 i.e ace is 0, and the highest card value is 51
    if cardNumber <= 12:
        cardSuit = "♣"
    elif cardNumber <= 25:
        cardSuit = "♦"
    elif cardNumber <= 38:
        cardSuit = "♥"
    elif cardNumber <= 51:
        cardSuit = "♠"

    cardNumber = cardNumber % 13

    if cardNumber == 0:
        cardNumber = "A"
    elif cardNumber == 10:
        cardNumber = "J"
    elif cardNumber == 11:
        cardNumber = "Q"
    elif cardNumber == 12:
        cardNumber = "K"
    else:
        cardNumber += 1

    return "{value}{suit} ".format(value=str(cardNumber), suit=cardSuit)


def generateDeck():
    deck = []
    while len(deck) < 52:
        newCard = random.randint(0, 51)
        if deck.count(newCard) == 0:
            deck.append(newCard)
    return deck


def addCardToHand(hand, deck):
    card = deck.pop(0)
    hand.append(card)


def generateHand(hand, deck, handSize = 2):
    i = 0
    while i < handSize:
        addCardToHand(hand, deck)
        i += 1

def handNumbersToCards(hand):
    cards = ""
    for a in hand:
        cards += convertNumberToCard(a)
    return cards

def getHandTotal(hand):
    cardValue = lambda c: min(c % 13 + 1, 10)
    i = 0
    for card in hand:
        card = cardValue(card)
        if (card == 1) and (i < 20):
            card = 11
            if (i + card) > 21:
                card = 1
        i += card
    return i

class BlackJackLedger(Ledger.Ledger):
    def __init__(self) -> None:
        super().__init__()
    
    def updateLedger(self, data, oldData):
        ID, money, wins, losses = oldData
        _, newMoney, newWins, newLosses = data

        wins += newWins
        losses += newLosses
        money += newMoney
        data = [ID, money, wins, losses]
        return data

         

class BlackJack:
    def __init__(self, recv, send):
        self.playerTurn = True

        self.deck = generateDeck()
        self.playerHand = []
        generateHand(self.playerHand, self.deck)
        self.dealerHand = []
        generateHand(self.dealerHand, self.deck)

        self.recv = recv
        self.send = send

        self.ledger = BlackJackLedger()

    def getPH(self):
        return self.playerHand

    def returnCards(self):
        self.playerHand.clear()
        self.dealerHand.clear()

    def shuffle(self):
        self.returnCards()
        self.deck = generateDeck()
        generateHand(self.playerHand, self.deck)
        generateHand(self.dealerHand, self.deck)

    def getDH(self):
        return self.dealerHand

    def stand(self):
        if self.playerTurn:
            self.playerTurn = False

    def hit(self):
        if self.playerTurn:
            addCardToHand(self.playerHand, self.deck)
            self.playerTurn = False
        else:
            addCardToHand(self.dealerHand, self.deck)
            self.playerTurn = True

    def checkHandState(self, hand):
        # Check the hand state and return w if game is won, l if lost and c for continue
        total = getHandTotal(hand)

        if total == 21:
            return "w"
        elif total > 21:
            return "l"
        else:
            return "c"

    def dealerHitLogic(self, hand):
        total = getHandTotal()
        if total > 17:
            self.stand()
        elif total <= 16:
            self.hit()


    def checkGameOver(self, state):
        gameOver = False
        if state == "w":
            gameOver = True
        elif state == "l":
            gameOver = True
        return gameOver

    async def play_game(self, ID, bet):
        validInput = False
        gameOver = False
        playerStood = False
        playerStats = self.ledger.readLedger(ID)
        if playerStats is None:
            playerStats = (ID, 100, 0, 0)

        while not gameOver:
            playerWinState = self.checkHandState(self.playerHand)
            dealerWinState = self.checkHandState(self.dealerHand)
            gameOver = self.checkGameOver(playerWinState) or self.checkGameOver(dealerWinState)
            if gameOver:
                continue
            
            await self.send("Players hand = " + str(getHandTotal(self.playerHand)) + ": " + handNumbersToCards(
                self.playerHand) + "\n" + "Dealers hand = ??: " + convertNumberToCard(self.dealerHand[0]) + "??")
            play = await self.recv("Hit or Stand? (h/s)")
            while not validInput:
                if play == "h":
                    self.hit()
                    validInput = True
                elif play == "s":
                    self.stand()
                    validInput = True
                    playerStood = True

            playerWinState = self.checkHandState(self.playerHand)
            if self.checkGameOver(playerWinState):
                continue

            # Dealers turn
            if playerStood:
                while dealerWinState == 'c':
                    # Dealer hits
                    self.hit()
                    # Player stands
                    self.stand()
                    # Loop ends when game is over
                    dealerWinState = self.checkHandState(self.dealerHand)        
            else:
                self.hit()
                dealerWinState = self.checkHandState(self.dealerHand)
            
            if self.checkGameOver(dealerWinState):
                continue

        await self.send("Players hand = " + str(getHandTotal(self.playerHand)) + ": " + handNumbersToCards(self.playerHand) +
              "\n" + "Dealers hand = " + str(getHandTotal(self.dealerHand)) + ": " + handNumbersToCards(self.dealerHand))
        if playerWinState == "w":
            await self.send("You won!")
            win = (ID, 2*bet, 1, 0)
            self.ledger.writeLedger(ID, win)
        elif playerWinState == "l":
            await self.send("You busted!")
            loss = (ID, -bet, 0, 1)
            self.ledger.writeLedger(ID, loss)
        elif dealerWinState == "w":
            await self.send("The Dealer reached 21 before you!")
            loss = (ID, -bet, 0, 1)
            self.ledger.writeLedger(ID, loss)
        elif dealerWinState == "l":
            await self.send("The Dealer busted before you!")
            win = (ID, 2*bet, 1, 0)
            self.ledger.writeLedger(ID, win)
        
        await self.send(f"{ID}'s score: {self.ledger.readLedger(ID)}")