GameService.java

package baseball.service;

import baseball.domain.Game;
import baseball.domain.User;
import baseball.utils.Parser;
import baseball.utils.RandomUtils;
import baseball.view.RequestInput;
import baseball.view.SystemMessage;
import camp.nextstep.edu.missionutils.Console;

public class GameService {

        int size;
        Game game;
        User user = new User();
        Parser parser = new Parser();
        SystemMessage systemMessage = new SystemMessage();

        public void setGame(int size, int start, int end) {
            this.size = size;
            game = new Game(RandomUtils.getRandomNumbers(size, start, end));
        }

        public void playGame() {
            int strike = 0;
            while (strike != 3) {
                play();
                systemMessage.printScoreMessage(game.getBallCount(), game.getStrikeCount());
                strike = game.getStrikeCount();
            }
        }

        private void play() {
            game.initBaseBall();
            user.setUserNumbers(getUserNumber());
            computeScore();
        }

        private int[] getUserNumber() throws IllegalArgumentException {
            RequestInput.requestInputData();
            String input = Console.readLine();
            return parser.parseUserInput(input, size);
        }

        private void computeScore() {
            for (int i = 0; i < size; i++) {
                compute(game.getGameNumbers(), user.getUserNumbers(), i);
            }
        }

        private void compute(int[] gameNumber, int[] userNumber, int index) {
            int temp = -1;
            for (int i = 0; i < gameNumber.length; i++) {
                if (gameNumber[i] == userNumber[index]) {
                    temp = i;
                    break;
                }
            }
            incCount(index, temp);
        }

        private void incCount(int index, int temp) {
            if (temp != index && temp != -1) {
                game.incBallCount();
            }
            if (temp == index) {
                game.incStrikeCount();
            }
        }
    }