import java.io.*;
import java.util.Random;
import java.util.Scanner;

public class ThreeGames1 {

    static int game = 0;
    static int exit = 0;
    static boolean gameContinues = true;


public static void main(String[] args) throws IOException {

    String Username = new String("Gerry"+"Evelynn"+"Joan");
    String Password = new String("guess"+"jack"+"sticks");

    BufferedReader br = new BufferedReader(
    new InputStreamReader(System.in));
    BufferedReader exitGame = new BufferedReader(
            new InputStreamReader(System.in));

    System.out.println("*** Please login ***\n");

    System.out.println("Username: ");
    Username = br.readLine();
    System.out.println(Username + " ");

    System.out.println("Password: ");
    Password = br.readLine();
    System.out.println(Password + " ");


 // Integer for player input
    int playerChoice = 0;

    ThreeGames game = new ThreeGames();
    Random randomNumber = new Random();

    System.out.println("Welcome to the System, please choose a game\n");

        playerChoice = (int) randomNumber.nextInt(3);
        playerChoice++;  // this adds an addition to the players choice

        boolean bad_user_choice = true;

        while (bad_user_choice)   // This ensures the user only inputs 1, 2 or 3 any other number will be invalid
        {
        System.out.println("Guess the Secret Number = 1, Pick up Sticks = 2, Black Jack = 3 Please enter a number: ");
        playerChoice = Integer.parseInt(br.readLine());
        if ((playerChoice == 1) || (playerChoice == 2) || (playerChoice == 3))
            bad_user_choice = false;
        }

        if (playerChoice == 1) {

            int amount_of_guesses = 0;
            int secretNumber;
            int guess =0;

            boolean are_you_ready = true;

            secretNumber = (int)randomNumber.nextInt(18);
            secretNumber++;

        System.out.println("Welcome! Try to guess the secret number");
        System.out.println();
        System.out.print("Enter a number between 1-19: ");
        while (are_you_ready)
        {

        guess=Integer.parseInt(br.readLine());

        if (guess == secretNumber)
        {   System.out.println("Your guess is correct. Congratulations!");
        amount_of_guesses++;
        System.out.println("Total amount of guesses: " + amount_of_guesses  );
        System.out.println(" Press 0 to Exit Game, or any other number to continue");
        exit = Integer.parseInt(exitGame.readLine());
        if (exit == 0) gameContinues  = false;
        }
        if (guess < secretNumber)
        {   System.out.println("Your guess is smaller than the secret number.");
                System.out.println("guess again");
        amount_of_guesses++;
        }
        if (guess > secretNumber)
        { System.out.println("Your guess is greater than the secret number.");
                System.out.println("guess again");
        amount_of_guesses++;
        }
        if (guess > 19)
        {System.out.println("please pick a number between 1 and 19.");

        }
        }
        }

        if (playerChoice == 2) {

            int numSticks = 21;
            System.out.println("Would you like to go first? (Y/n)");
            Scanner input = new Scanner(System.in);
            String goFirst = input.nextLine();
            Scanner take = new Scanner(System.in);
            int numToTake = 0;

            while (numSticks >0) {

                if (goFirst.equals("y") || goFirst.equals("Y")) {
                    System.out.println("There are " + numSticks + " sticks");
                    System.out.println("How many sticks to take (1 or 2)");
                    numToTake = take.nextInt();

                    if (numToTake >2) {
                        numToTake = 2;
                    }
                    else if (numToTake <1) {
                        numToTake = 1;
                    }
                    numSticks = numSticks - numToTake;

                    if (numSticks <= 0) {
                        System.out.println("You Lose!");
                    }
                    else {

                        if ((numSticks - 2) % 3 == 0 || numSticks - 2 == 0) {
                            numToTake = 1;
                        }
                        else {
                            numToTake = 2;
                        }
                        System.out.println("Computer takes " + numToTake + " sticks");
                        numSticks = numSticks - numToTake;

                        if (numSticks <= 0) {
                            System.out.println("You Win!");
                        }
                        else {
                            System.out.println("There are " + numSticks + " sticks");
                            System.out.println("How many Sticks to take (1 or 2)");
                            numToTake = take.nextInt();

                            if(numToTake >2) {
                                numToTake = 2;
                            }
                            else if (numToTake < 1) {
                                numToTake = 1;
                            }
                            numSticks = numSticks - numToTake;

                            if (numSticks <= 0) {
                                System.out.println("You Lose!");
                            }
                        }
                    }
                }
            }
        }

if (playerChoice == 3) {

    Scanner keyboard = new Scanner(System.in);

//52 Cards, Aces = 11, Picture cards = 10, Ace's cannot be reduced to 1.
int[] newCard = {2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,6,6,6,6,7,7,7,7,8,8,8,8,9,9,9,9,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,11,11,11,11};

//Shuffle. Once per game.
shuffleArray(newCard);

//Start BlackJack.
System.out.println("Welcome to BlackJack!");
System.out.println();
System.out.println("You get a " + newCard[0] + " and a " + newCard[1] + ".");
int playerTotal = newCard[0] + newCard[1];
System.out.println("Your total is " + playerTotal + ".");
System.out.println();

//Player can get blackjack/bust in the 1st deal. - awaiting betting system (enhanced bets for blackjack in first round)
if (playerTotal == 21){
    System.out.println("Blackjack, you win.");
    System.out.println(" Press 0 to Exit Game, or any other number to continue");
    exit = Integer.parseInt(exitGame.readLine());
    if (exit == 0) gameContinues  = false;
}
if (playerTotal > 21){
    System.out.println("Bust, You lose.");
    System.out.println(" Press 0 to Exit Game, or any other number to continue");
    exit = Integer.parseInt(exitGame.readLine());
    if (exit == 100) gameContinues  = false;
}
// Dealer cards
System.out.println("The dealer has a " + newCard[2] + " showing, and a hidden card.");
int dealerTotal = newCard[2] + newCard[3];
if (dealerTotal > 21){     //Dealer bust check.
    System.out.println();
    System.out.println("Dealers total is " + dealerTotal + ".");
    System.out.println("Dealer is bust, you win!");
    System.out.println(" Press 0 to Exit Game, or any other number to continue");
    exit = Integer.parseInt(exitGame.readLine());
    if (exit == 100) gameContinues  = false;
}
if (dealerTotal == 21){    //Dealer blackjack check.
    System.out.println();
    System.out.println("Dealer reveals his second card: " + newCard[3] + ".");
    System.out.println("Dealers total is " + dealerTotal + ".");
    System.out.println();
    System.out.println("Dealer has BlackJack, you lose.");
    System.out.println(" Press 0 to Exit Game, or any other number to continue");
    exit = Integer.parseInt(exitGame.readLine());
    if (exit == 100) gameContinues  = false;
}
System.out.println("His total is hidden.");
System.out.println();


// Hit or Stay for player.
System.out.print("Would you like to \"hit\" or \"stay\"? ");
String hitStay = keyboard.next();
System.out.println();

//cc = card count
int cc = 4;
if (hitStay.equalsIgnoreCase("hit")){
    // While loop to ensure different cards & multiple "hits".
    while (playerTotal < 21 && hitStay.equalsIgnoreCase("hit")){
        if (hitStay.equalsIgnoreCase("hit")){
            System.out.println("You drew a " + newCard[cc] + ".");
            playerTotal = playerTotal + newCard[cc];
            System.out.println("Your total is " + playerTotal + ".");
            System.out.println();
            cc++;        //Adds 1 to ensure next card is different.
            // Bust & Blackjack check.
            if (playerTotal > 21){
                System.out.println("You are bust, You lose.");
                System.out.println(" Press 0 to Exit Game, or any other number to continue");
                exit = Integer.parseInt(exitGame.readLine());
                if (exit == 100) gameContinues  = false;
            }
            if (playerTotal == 21){
                System.out.println("Blackjack, you win.");
                System.out.println(" Press 0 to Exit Game, or any other number to continue");
                exit = Integer.parseInt(exitGame.readLine());
                if (exit == 100) gameContinues  = false;
            }
            System.out.print("Would you like to \"hit\" or \"stay\"? ");
            hitStay = keyboard.next();
            System.out.println();
        }
    }
}

// Dealers turn, only if Round 1 didn't end in bust/blackjack.
keyboard.close();
System.out.println("Ok dealers turn.");
System.out.println("His hidden card was a " + newCard[3] + "."); // reveal hidden from round one.

while (dealerTotal < 16){ // Dealer will stay on 16+ and hit if below.
    System.out.println();
    System.out.println("Dealer chooses to hit.");
    System.out.println("He draws a " + newCard[cc] + ".");
    cc++;
    dealerTotal = dealerTotal + newCard[cc];
    System.out.println();
    System.out.println("His total is " + dealerTotal);
    // bust check - no need for blackjack check due to final win sequence
    if (dealerTotal > 21){
        System.out.println();
        System.out.println("Dealer is bust, YOU WIN!");
        System.out.println(" Press 0 to Exit Game, or any other number to continue");
        exit = Integer.parseInt(exitGame.readLine());
        if (exit == 0) gameContinues  = false;
    }
    // stay condition.
    if (dealerTotal < 21 && dealerTotal > 16){
        System.out.println();
        System.out.println("Dealer Stays.");
    }
}

// final win sequence.
System.out.println();
System.out.println("Dealer total is " + dealerTotal);
System.out.println("Your total is " + playerTotal);
System.out.println();

if (dealerTotal > playerTotal){
    System.out.println("Dealer wins.");
}
if (dealerTotal == playerTotal){
    System.out.println("You both draw.");
}
if (dealerTotal < playerTotal){
    System.out.println("You win.");
}
}
}

static void shuffleArray(int[] deckCards){

Random rnd = new Random();
for (int i = deckCards.length - 1; i > 0; i--)
{
    int index = rnd.nextInt(i + 1);
    // Swap
    int a = deckCards[index];
    deckCards[index] = deckCards[i];
    deckCards[i] = a;
}
}
}