5AL2 exercices form clean architecture courses

GuessTheNumber.java

public class App {
  public static void main(String[] args) {
    GuessTheNumber guessTheNumber = new GuessTheNumber();
    guessTheNumber.main(args);
  }
}

public class GameConfig {
  public static final int MAX_ATTEMPTS = 10;
  public static final int MAX_NUMBER = 100;
  public static final int MIN_NUMBER = 1;
  public static final boolean DEBUG = false;
}

public interface Logger {
  void log(String message);
}

public class ConsoleLogger implements Logger {
  @Override
  public void log(String message) {
    System.out.println(message);
  }
}

public interface Rng {
  int nextInt(int bound);
}

public class RandomRng implements Rng {
  private Random generator = new Random();

  @Override
  public int nextInt(int bound) {
    return generator.nextInt(bound);
  }
}

class GuessTheNumber {
  private Rng generator = new RandomRng();
  // TODO : change Scanner to be a interface
  private Scanner scanner = new Scanner(System.in);
  private Logger logger = new ConsoleLogger();

  public void main(String[] args) {
    int guess = 0;
    int attempts = 0;
    boolean isTheGameStillInProgress = true;

    displayInitalMessage();

    while (isTheGameStillInProgress) {
      attempts = 0;
      logger.log("Guess the number (between " + GameConfig.MIN_NUMBER + " and " + GameConfig.MAX_NUMBER + ")!");
      int misteryNumber = getMisteryNumber();
      if (GameConfig.DEBUG) {
        logger.log("debug : the expected number is " + misteryNumber);
      }

      while (guessIsWrong(misteryNumber, guess) && playerHasntReachMaxAttempts(attempts)) {
        String input = scanner.nextLine();
        attempts++;
        guess = displayGuessResult(attempts, misteryNumber, input);
      }

      logger.log("----------------------------------------------------");
      isTheGameStillInProgress = doesPlayerContinueTheGame();
    }

    logger.log("== Thanks for playing! ==");
    scanner.close();
  }

  // The function does 2 thing next move is to change that. Scanner dependency
  // should be link and this class will be renamed
  private int displayGuessResult(int attempts, int number, String input) {
    int guess = 0;
    try {
      guess = Integer.parseInt(input);
      displayOnValidData(guess, attempts, number);
    } catch (NumberFormatException e) {
      displayOnInvalidData(attempts, input);
    }

    if (guessIsWrong(number, guess) && playerHasReachMaxAttempts(attempts)) {
      logger.log("You lose after " + GameConfig.MAX_ATTEMPTS + " tries, the expected number was " + number);
    }
    return guess;
  }

  private int getMisteryNumber() {
    return generator.nextInt(GameConfig.MAX_NUMBER) + GameConfig.MIN_NUMBER;
  }

  private boolean guessIsCorrect(int number, int userGuess) {
    return number == userGuess;
  }

  private boolean guessIsWrong(int number, int userGuess) {
    return number != userGuess;
  }

  private boolean playerHasntReachMaxAttempts(int attempts) {
    return attempts < GameConfig.MAX_ATTEMPTS;
  }

  private boolean playerHasReachMaxAttempts(int attempts) {
    return attempts >= GameConfig.MAX_ATTEMPTS;
  }

  private boolean doesPlayerContinueTheGame() {
    logger.log("Do you want to try again with a new number (yes/no)?");
    String userResponse = scanner.nextLine().trim().toLowerCase();
    return userResponse.equals("yes");
  }

  private void displayInitalMessage() {
    logger.log("-===========================-");
    logger.log("=== GUESS THE NUMBER GAME ===");
    logger.log("-===========================-");
  }

  private void displayOnInvalidData(int attempts, String input) {
    logger.log("Your input was '" + input + "', please enter a valid integer. " + (GameConfig.MAX_ATTEMPTS - attempts)
        + "/" + GameConfig.MAX_ATTEMPTS + " tries left");
  }

  private void displayOnValidData(int userGuess, int attempts, int number) {
    if (guessIsCorrect(number, userGuess)) {
      logger.log("You found it after " + attempts + " tries!");
      return;
    }
    String divergence = userGuess < number ? "smaller" : "greater";
    logger.log("Wrong! Your number is " + divergence + " than the correct one. "
        + (GameConfig.MAX_ATTEMPTS - attempts) + "/" + GameConfig.MAX_ATTEMPTS + " tries left");
  }
}