import random
import json
import math

from shutil import copyfile

from funcs import logThis, replaceMultiple
from . import money, blackjackDraw

deckAmount = 4

def shuffle():
    logThis("Shuffling the blackjack deck")

    with open("resources/games/deckofCards.txt","r") as f:
        deck = f.read()
    
    allDecks = deck.split("\n") * 4
    random.shuffle(allDecks)
    data = "\n".join(allDecks)

    with open("resources/games/blackjackCards.txt","w") as f:
        f.write(data)

    return

def calcHandValue(hand : list):
    logThis("Calculating hand value")
    values = [0]

    for card in hand:
        cardValue = card[0]
        cardValue = replaceMultiple(cardValue,["0","k","q","j"],"10")
        if cardValue == "a":
            length = len(values)
            for x in range(length):
                values.append(values[x] + 11)
                values[x] += 1
        else:
            for x in range(len(values)):
                values[x] += int(cardValue)
    
    values.sort()

    handValue = values[0]
    for value in values:
        if value <= 21:
            handValue = value
    
    return handValue

def drawCard():
    logThis("drawing a card")
    with open("resources/games/blackjackCards.txt","r") as f:
        cards = f.read().split("\n")
    
    drawnCard = cards[0]
    cards = cards[1:]
    data = "\n".join(cards)

    with open("resources/games/blackjackCards.txt","w") as f:
        f.write(data)

    return drawnCard

def dealerDraw(channel):
    with open("resources/games/games.json", "r") as f:
        data = json.load(f)
    
    done = False

    if calcHandValue(data["blackjack games"][channel]["dealer hand"]) < 17:
        data["blackjack games"][channel]["dealer hand"].append(drawCard())
    else:
        done = True
    
    if calcHandValue(data["blackjack games"][channel]["dealer hand"]) > 21:
        data["blackjack games"][channel]["dealer busted"] = True

    with open("resources/games/games.json", "w") as f:
        json.dump(data,f,indent=4)
    
    return done

def blackjackContinue(channel):
    with open("resources/games/games.json", "r") as f:
        data = json.load(f)

    done = False

    if data["blackjack games"][channel]["open for bets"]:
        data["blackjack games"][channel]["open for bets"] = False

    
    allStanding = True
    message = "All players are standing. The dealer now shows his cards and draws."

    if data["blackjack games"][channel]["all standing"]:
        with open("resources/games/games.json", "w") as f:
            json.dump(data,f,indent=4)

        done = dealerDraw(channel)
        message = "The dealer draws a card."

        with open("resources/games/games.json", "r") as f:
            data = json.load(f)

    for user in data["blackjack games"][channel]["user hands"]:
        if data["blackjack games"][channel]["user hands"][user]["hit"] == False:
            data["blackjack games"][channel]["user hands"][user]["standing"] = True

        if data["blackjack games"][channel]["user hands"][user]["standing"] == False:
            allStanding = False
        data["blackjack games"][channel]["user hands"][user]["hit"] = False

    if allStanding:
        data["blackjack games"][channel]["all standing"] = True
        with open("resources/games/games.json", "w") as f:
            json.dump(data,f,indent=4)
    else:
        with open("resources/games/games.json", "w") as f:
            json.dump(data,f,indent=4)

    blackjackDraw.drawImage(channel)

    if allStanding:
        if done == False:
            return message, True, done
        else:
            return "The dealer is done drawing cards", True, done
    else:
        return "You have 20 seconds to either hit or stand with \"!blackjack hit\" or \"!blackjack stand\". It's assumed you're standing if you don't make a choice.", False, done

def blackjackHit(channel,user):
    with open("resources/games/games.json", "r") as f:
        data = json.load(f)

    if data["blackjack games"][channel]["open for bets"] == False:
        if data["blackjack games"][channel]["user hands"][user]["hit"] == False:
            if data["blackjack games"][channel]["user hands"][user]["standing"] == False:
                data["blackjack games"][channel]["user hands"][user]["hand"].append(drawCard())
                data["blackjack games"][channel]["user hands"][user]["hit"] = True

                handValue = calcHandValue(data["blackjack games"][channel]["user hands"][user]["hand"])

                if handValue == 21:
                    data["blackjack games"][channel]["user hands"][user]["standing"] = True
                elif handValue > 21:
                    data["blackjack games"][channel]["user hands"][user]["standing"] = True
                    data["blackjack games"][channel]["user hands"][user]["busted"] = True
                

                with open("resources/games/games.json", "w") as f:
                    json.dump(data,f,indent=4)

                return "accept"            
            else:
                logThis(user+" is already standing")
                return "You can't hit when you're standing"
        else:
            logThis(user+" has already hit this round")
            return "You've already hit this round"
    else:
        logThis(user+" tried to hit on the first round")
        return "You can't hit before you see your cards"

def blackjackStand(channel,user):
    with open("resources/games/games.json", "r") as f:
        data = json.load(f)
    if data["blackjack games"][channel]["open for bets"] == False:
        if data["blackjack games"][channel]["user hands"][user]["hit"] == False:
            if data["blackjack games"][channel]["user hands"][user]["standing"] == False:
                data["blackjack games"][channel]["user hands"][user]["standing"] = True
                with open("resources/games/games.json", "w") as f:
                    json.dump(data,f,indent=4)

                return "accept"  
            else:
                logThis(user+" is already standing")
                return "You're already standing"
        else:
            logThis(user+" has already hit this round")
            return "You've already hit this round"
    else:
        logThis(user+" tried to stand on the first round")
        return "You can't stand before you see your cards"

def blackjackPlayerDrawHand(channel,user,bet):
    with open("resources/games/games.json", "r") as f:
        data = json.load(f)

    logThis(user+" is trying to join the game in "+channel)
    
    if channel in data["blackjack games"]:
        if user not in data["blackjack games"][channel]["user hands"]:
            if len(data["blackjack games"][channel]["user hands"]) < 5:
                if data["blackjack games"][channel]["open for bets"]:
                    if money.checkBalance(user) >= bet:
                        money.addMoney(user,-1 * bet)
                        playerHand = [drawCard(),drawCard()]

                        handValue = calcHandValue(playerHand)

                        with open("resources/games/games.json", "r") as f:
                            data = json.load(f)

                        if handValue == 21:
                            data["blackjack games"][channel]["user hands"][user] = {"hand":playerHand,"bet":bet,"standing":True,"busted":False,"blackjack":True,"hit":True}
                        else:
                            data["blackjack games"][channel]["user hands"][user] = {"hand":playerHand,"bet":bet,"standing":False,"busted":False,"blackjack":False,"hit":True}

                        with open("resources/games/games.json", "w") as f:
                            json.dump(data,f,indent=4)

                        logThis(user+" entered the game")
                        return user+" entered the game"
                    else:
                        logThis(user+" doesn't have enough GwendoBucks")
                        return "You don't have enough GwendoBucks to place that bet"
                else:
                    logThis("The table is no longer open for bets")
                    return "The table is no longer open for bets"
            else:
                logThis("There are already 5 players in the game.")
                return "There's already a maximum of players at the table."
        else:
            logThis(user+" is already in the game")
            return "You've already entered this game"
    else:
        logThis("There is no game going on in "+channel)
        return "There is no game going on in this channel"

def blackjackStart(channel:str):
    with open("resources/games/games.json", "r") as f:
        data = json.load(f)
    
    logThis("Trying to start a blackjack game in "+channel)

    if channel not in data["blackjack games"]:

        dealerHand = [drawCard(),drawCard()]

        data["blackjack games"][channel] = {"dealer hand": dealerHand,"dealer busted":False,"user hands": {},"open for bets":True,"all standing":False}
        with open("resources/games/games.json", "w") as f:
            json.dump(data,f,indent=4)

        copyfile("resources/games/blackjackTable.png","resources/games/tables/blackjackTable"+channel+".png")

        return "started"
    else:
        logThis("There is already a blackjack game going on in "+channel)
        return "There's already a blackjack game going on. Try again in a few minutes."

def blackjackFinish(channel):
    finalWinnings = "*Final Winnings:*\n"

    with open("resources/games/games.json", "r") as f:
        data = json.load(f)

    dealerValue = calcHandValue(data["blackjack games"][channel]["dealer hand"])
    reason = ""

    for user in data["blackjack games"][channel]["user hands"]:
        winnings = -1 * data["blackjack games"][channel]["user hands"][user]["bet"]
        if data["blackjack games"][channel]["user hands"][user]["blackjack"]:
            reason = "(blackjack)"
            winnings +=  math.floor(2.5 * data["blackjack games"][channel]["user hands"][user]["bet"])
        else:
            if data["blackjack games"][channel]["user hands"][user]["busted"] == False:
                if data["blackjack games"][channel]["dealer busted"]:
                    reason = "(dealer busted)"
                    winnings += 2 * data["blackjack games"][channel]["user hands"][user]["bet"]
                elif calcHandValue(data["blackjack games"][channel]["user hands"][user]["hand"]) > dealerValue:
                    winnings += 2 * data["blackjack games"][channel]["user hands"][user]["bet"]
                elif calcHandValue(data["blackjack games"][channel]["user hands"][user]["hand"]) == dealerValue:
                    winnings += data["blackjack games"][channel]["user hands"][user]["bet"]
            else:
               reason = "(busted)" 
        
        if winnings < 0:
            if winnings == -1:
                finalWinnings += user+" lost "+str(-1 * winnings)+" GwendoBuck "+reason+"\n"
            else:
                finalWinnings += user+" lost "+str(-1 * winnings)+" GwendoBucks "+reason+"\n"
        else:
            if winnings == 1:
                finalWinnings += user+" won "+str(winnings)+" GwendoBuck "+reason+"\n"
            else:
                finalWinnings += user+" won "+str(winnings)+" GwendoBucks "+reason+"\n"
        
        netWinnings = winnings + data["blackjack games"][channel]["user hands"][user]["bet"]

        money.addMoney(user,netWinnings)

    with open("resources/games/games.json", "r") as f:
        data = json.load(f)

    del data["blackjack games"][channel]

    with open("resources/games/games.json", "w") as f:
        json.dump(data,f,indent=4)

    return finalWinnings