/*
 * File: Hangman.java
 * ------------------
 * This program will eventually play the Hangman game from
 * Assignment #4.
 */

import acm.graphics.*;
import acm.program.*;
import acm.util.*;

import java.awt.*;

public class Hangman extends ConsoleProgram {

	private RandomGenerator rgen = RandomGenerator.getInstance();
	HangmanLexicon lexicon = new HangmanLexicon();

	private int numberOfGuesses = 8;
	private String result;
	private String word;


    public void run() {
		println("Welcome to Hangman!");
		generateRandomWord();
	}

    private void generateRandomWord() {
    	int random = rgen.nextInt(0, lexicon.getWordCount() - 1);
    	word = lexicon.getWord(random);
    	println(word);
    	result = "";
    	int length = word.length();
    	for(int i = 0; i < length; i++) {
    		result = result + "-";
    	}
    	println("The word now looks like this: " + result);
    	println("You have " + numberOfGuesses + " guesses left." );
    	guessWords(length);
    }

    private void guessWords(int length) {
    	while (true) {
    		int counterWin = 0;
    		int counterLoss = 0;
    		if (! result.equalsIgnoreCase(word) && numberOfGuesses > 0) {
    			String input = readLine("Your guess: ");
    			for (int i = 0; i < length; i++) {
    				String currentLetter = word.substring(i, i + 1);
    				int charIndex = word.indexOf(currentLetter);
    				if (currentLetter.equalsIgnoreCase(input)) {
    					counterWin = i;
    					displayGoodMessage(counterWin, charIndex);
    					println("That guess is correct.");
    					if (result.equalsIgnoreCase(word)) {
    						println("You guessed the word: " + word);
    						println("You win.");
    					} else {
    						println("The word now looks like this: " + result);
    						println("You have " + numberOfGuesses + " guesses left.");
    					}
    				} else {
    					counterLoss++;
    				}
    				if (counterLoss == word.length()) {
    					numberOfGuesses--;
    					println("There are no " + input.toUpperCase() + "'s in the word.");
    					if (numberOfGuesses == 0) {
    						println("You're completely hung.");
    						println("The word was: " + word);
    						println("You lose.");
    					} else {
    						println("The word now looks like this: " + result);
    						println("You have " + numberOfGuesses + " guesses left.");
    					}
    				}
    			}
    		}
    	}
    }

    private String displayGoodMessage(int counterWin, int charIndex) {
    	char letterCorrect = word.charAt(counterWin);
    	for (int i = 0; i < word.length(); i++) {
    		if (i == charIndex) {
    			result = result.substring(0, i) + letterCorrect + result.substring(i + 1, word.length());
    		}
    	}
    	return result;
    }
}