GameController.java

package baseball.controller;

import java.util.ArrayList;
import java.util.List;

import baseball.model.CompareResult;
import baseball.model.Game;
import baseball.view.InputView;
import baseball.view.OutputView;

public class GameController {

	private final Game game;
	private final InputView inputView;
	private final OutputView outputView;

	public GameController(Game game, InputView inputView, OutputView outputView) {
		this.game = game;
		this.inputView = inputView;
		this.outputView = outputView;
	}

	public void play() {
		while (true) {
			playSingleGame();
			if (shouldExit()) {
				return;
			}
			game.reset();
		}
	}

	private void playSingleGame() {
		while (true) {
			if (guess()) {
				outputView.printGameEnd(game.getDigitsLength());
				return;
			}
		}
	}

	private boolean guess() {
		try {
			CompareResult result = compareInput();
			outputView.printResult(result);
			return isGameEnd(result);
		} catch (RuntimeException exception) {
			outputView.printError(exception.getMessage());
		}
		return false;
	}

	private CompareResult compareInput() {
		String input = inputView.readDigits();
		List<Integer> digits = parseDigits(input);
		return game.compare(digits);
	}

	private List<Integer> parseDigits(String input) {
		List<Integer> numbers = new ArrayList<>();
		for (int i = 0; i < input.length(); i++) {
			char digit = input.charAt(i);
			validateDigit(digit);
			numbers.add(digit - '0');
		}
		return numbers;
	}

	private void validateDigit(char digit) {
		if (digit < '0' || digit > '9') {
			throw new RuntimeException("숫자만 입력해 주세요");
		}
	}

	private boolean isGameEnd(CompareResult result) {
		return result.strike() == result.length();
	}

	private boolean shouldExit() {
		while (true) {
			try {
				int command = inputView.readGameCommand();
				validateGameCommand(command);
				return command == 2;
			} catch (RuntimeException exception) {
				outputView.printError(exception.getMessage());
			}
		}
	}

	private void validateGameCommand(int command) {
		if (command != 1 && command != 2) {
			throw new RuntimeException("1 또는 2를 입력해 주세요.");
		}
	}
}