import java.util.Scanner;
import java.util.concurrent.ThreadLocalRandom;

public class JumbleGame {

    private static final String[] WORDS = new String[] {
        "magical","quarter","security","phrase","xylophone","hydrogen"
    };

    public static void main(String[] args) {
        JumbleGame jg = new JumbleGame();
        jg.startGame();
    }

    private void startGame() {
        int numberOfGuesses = 0;
        String original = selectRandomWord();
        String shuffled = getShuffledWord(original);
        boolean gameOn = true;

        while(gameOn) {
            System.out.println("Shuffled word is: "+shuffled);
            numberOfGuesses++;
            if(numberOfGuesses == 7) {
            System.out.println("HINT: Here are the first two letters in order: " + s1.charAt(0) + s1.charAt(1));
            }

            if(numberOfGuesses == 10) {
            System.out.println("Game Over! Try again next time!");
            System.exit(0);
            }

            String userGuess = getUserGuess();

            if(original.equalsIgnoreCase(userGuess)) {
                System.out.println("Congratulations! You found the word in "+numberOfGuesses+" guesses");
                gameOn = false;
            }
            else {
                System.out.println("Sorry, Wrong answer");
            }
        }
    }

    public String getUserGuess() {
        Scanner sn = new Scanner(System.in);
        System.out.println("Please type in the original word: ");
        return sn.nextLine();
    }

    public String selectRandomWord() {
        int rPos = ThreadLocalRandom.current().nextInt(0, WORDS.length);
        return WORDS[rPos];
    }

    public String getShuffledWord(String original) {
        String shuffledWord = original;
        int wordSize = original.length();
        int shuffleCount = 10;

        for(int i=0;i<shuffleCount;i++) {

            int position1 = ThreadLocalRandom.current().nextInt(0, wordSize);
            int position2 = ThreadLocalRandom.current().nextInt(0, wordSize);
            shuffledWord = swapCharacters(shuffledWord,position1,position2);
        }
        return shuffledWord;
    }

    private String swapCharacters(String shuffledWord, int position1, int position2) {
        char[] charArray = shuffledWord.toCharArray();
        char temp = charArray[position1];
        charArray[position1] = charArray[position2];
        charArray[position2] = temp;
        return new String(charArray);
    }
}