/*
 * 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();

    private String orig;
    private String hidden;
    private String userInput;
    private String lowerInput;
    // private String missedLetters = "";  // this is not needed

    private char lastLetter;
    private int guess = 8;

    //private boolean guessed = false;    //this is not needed
    private boolean GameWon = false;     // added this to stop the program before 8 tries passed if all letters were guessed

    public class getWord extends HangmanLexicon {
        int rand = rgen.nextInt(getWordCount());
        String str = getWord(rand);
    }

    getWord w = new getWord();
    private String getAWord() {
        return(w.str);
    }

    public void run() {
        console();
//      graphics();
//      readLexicon();
    }

    private void console() {
        orig = getAWord();
        // write dashes in HIDDEN only once. Used then during the game to control win/loss
        hidden = orig.replaceAll(".","-");
        interactWithUser();
    }

    private void interactWithUser() {
        println("Welcome to Hangman!");
        gameProcess();
        gameEnd();    // changed to finish game regardless of current status. gameEnd will determine if won or lost.
    }

    private void gameProcess() {
        while (guess != 0 || GameWon) {   // added "or if GameWon = true" to exit the loop if won before 8 tries
            println("The word now looks like this: " + hidden);
            checkUserInput();
            println("You have " + guess + " guesses left.");
        }
    }

    private void checkUserInput() {
        userInput = readLine("Your guess: ");
        lastLetter = userInput.charAt(0);
        lowerInput = orig.toLowerCase();
        if (orig.contains(userInput) || lowerInput.contains(userInput)) {
            // guessed = true;   // this is not needed
            updateHidden();
            checkWin();
        } else {
            guess--;    // placed instead of guessed = false;
        }
        // this is not needed
        //if (!guessed) {
        //  guess--;
        //}
    }

    private void updateHidden() {
        for (int i=0; i< orig.lenth(); i++) {
            if (Character.toLowerCase(orig.charAt(i)) == Character.toLowerCase(lastLetter)) {
                char c = orig.charAt(i);
                hidden = replaceChar(hidden, c ,  i);
            }
        }
    }

    private String replaceChar(String str, char ch, int index) {
        return str.substring(0, index) + ch + str.substring(index+1);
    }

    private void checkWin() {
        if (!hidden.contains("-")) {
            GameWon =  true;
        }
    }

    private void gameEnd() {    // changed from gameLost to gameEnd
        if (guess == 0) {
            println("You're completely hung.");
            println("The word was: " + getAWord());
            println("You lose.");
        }
        if (GameWon) {
            println("Congratulations, you WON!!");
            println("The word was: " + getAWord());
        }
    }

}