import java.io.*;
import java.util.*;

public class Main {
  public static void main(String[] args) throws FileNotFoundException {
    String filePath = "src/main/java/Words.txt";
    Scanner s = new Scanner(new File(filePath));
    ArrayList<String> words = new ArrayList<String>();

    while (s.hasNextLine()) {
      words.add(s.nextLine().toLowerCase());
    }

    if (words.size() > 0) {
      Random random = new Random();
      int randomIndex = random.nextInt(words.size());
      String randomWord = words.get(randomIndex);
      System.out.println("Let's play Hangman! The word has " + randomWord.length() + " letters.");

      System.out.println("Initial Blanks: ");
      String blanks = "";
      for (int i = 0; i < randomWord.length(); i++) {
        blanks += "_ ";
      }
      System.out.println(blanks);
      System.out.println();

      boolean wordGuessed = false;
      int attempts = 6;
      while (!wordGuessed && attempts > 0) {
        System.out.println("Guess a letter: ");
        Scanner input = new Scanner(System.in);
        String guessedLetter = input.nextLine().toLowerCase();
        boolean letter = false;
        String updatedBlanks = "";
        for (int i = 0; i < randomWord.length(); i++) {
          if (randomWord.charAt(i) == guessedLetter.charAt(0)) {
            updatedBlanks += guessedLetter + " ";
            letter = true;
          } else {
            updatedBlanks += blanks.charAt(2 * i) + " ";
          }
        }
        blanks = updatedBlanks;
        System.out.println("Updated Word: ");
        System.out.println(blanks);
        System.out.println();
        if (!letter) {
          attempts--;
          printHangman(attempts);
          System.out.println("The letter: " + guessedLetter + " is not in the word.");
          System.out.println("You have " + attempts + " attempts left.");
        } else {
          boolean guessed = true;
          for (int i = 0; i < randomWord.length(); i++) {
            if (blanks.charAt(2 * i) == '_') {
              guessed = false;
              break;
            }
          }
          if (guessed) {
            wordGuessed = true;
            System.out.println("Congratulations! You guessed the word: " + randomWord);
          }
        }
      }

      if (!wordGuessed) {
        System.out.println("Game over! The word was: " + randomWord);
      }
    }

    try {
      FileWriter myWriter = new FileWriter("Words.txt", false);

      for (int i = 0; i < words.size(); i++) {
        myWriter.write(words.get(i) + "\n");
      }
      myWriter.close();
    } catch (IOException e) {
      System.out.println("An error occurred.");
      e.printStackTrace();
    }
  }

  public static void printHangman(int attempts) {
    String[] hangman = {
        " _______",
        "|       |",
        "|       O",
        "|      /|\\",
        "|      / \\",
        "|"
    };

    System.out.println("Hangman:");
    for (int i = 0; i < hangman.length - attempts - 1; i++) {
      System.out.println(hangman[i]);
    }
  }
}