import javax.swing.*;


public class GuessNumberHint {
	int guessVeryNice = 0;
	int numAttempts = 0;
	
	public GuessNumberHint() {		
		// Reading difficulty level
		String difficultyStr = JOptionPane.showInputDialog(null, "Enter a difficulty level");
		int difficulty = Integer.parseInt(difficultyStr);
		
		// Generate the random value
		int correctValue = (int)(Math.random() * difficulty) + 1;
		
		// Loop asking user for values
		doUserGuess(difficulty, correctValue);
		
		// Report attempts and correct value
		displayReport(correctValue);
	}
	
	private void displayReport(int correctValue) {
		String finalMessage;
		if (guessVeryNice == correctValue) {
			finalMessage = "You guessed the value! (" + correctValue + ")";
		} else {
			finalMessage = "You did not guess the value (" + correctValue + ")";
		}
		finalMessage += "\nNumber of Attempts: " + numAttempts;
		JOptionPane.showMessageDialog(null, finalMessage, "Final Report", JOptionPane.INFORMATION_MESSAGE);
	}
	
	public void doUserGuess(int difficulty, int correctValue) {
		String guessStr = null;
		String enterValueStr = "Enter a value between 1 and " + difficulty + " (0 to quit)";
		
		// keep track of values entered by user 
		boolean[] valueGuessed = new boolean[difficulty + 1];
		for (int i=0; i<difficulty+1; i++) {
			valueGuessed[i] = false;
		}
		
		do {
			guessStr = JOptionPane.showInputDialog(null, enterValueStr);
			guessVeryNice = Integer.parseInt(guessStr);
			if (guessVeryNice != 0) {
				if (guessVeryNice != correctValue) {
					// check if guess has already been entered
					String hintMessage;
					if (valueGuessed[guessVeryNice]) {
						hintMessage = "Wrong guess: " + guessVeryNice + " has already being tried";
					} else {
						valueGuessed[guessVeryNice] = true;
						if (guessVeryNice < correctValue) {
							hintMessage = "Guess too low: " + guessVeryNice;
						} else {
							hintMessage = "Guess too high: " + guessVeryNice;
						}
					}
					JOptionPane.showMessageDialog(null, hintMessage, "", JOptionPane.INFORMATION_MESSAGE);
				} 
				numAttempts++;
			}
		} while ((guessVeryNice != correctValue) && (guessVeryNice != 0));	
	}
	
	public static void main(String[] args) {
		new GuessNumberHint();
		System.exit(0);
	}
}