🚀 5단계 - 자동차 경주(리팩토링)

src/main/java/ApplicationMain.java

@@ -1,15 +1,11 @@
-import java.util.List;
+import controller.GameController;
+
 public class ApplicationMain {
     public static void main(String[] args) {
 
-        List<String> carNames = InputView.getCarName();
-        int tryCount = InputView.getTryCount();
-        InputView.closeScanner();
-
-        Racing racing = new Racing(carNames, tryCount);
-
-        racing.start();
+        GameController gameController = new GameController();
 
+        gameController.play();
     }
 
 }

src/main/java/controller/GameController.java

@@ -0,0 +1,26 @@
+package controller;
+
+import domain.Racing;
+import java.util.List;
+import view.InputView;
+import view.ResultView;
+
+public class GameController {
+    public void play() {
+        List<String> carNames = InputView.getCarName();
+        int tryCount = InputView.getTryCount();
+        InputView.closeScanner();
+
+        Racing racing = new Racing(carNames);
+
+        ResultView.printExecuteResult();
+
+        for (int i = 0; i < tryCount; i++) {
+            racing.start();
+            ResultView.printRaceRound(racing);
+        }
+
+        ResultView.printWinner(racing);
+
+    }
+}

src/main/java/domain/Car.java

@@ -0,0 +1,45 @@
+package domain;
+
+
+public class Car {
+    private final static int MOVE_BOUND = 4;
+    private final static int MOVE_STEP = 1;
+
+    private final CarName name;
+    private final Position position;
+
+    public Car(String name) {
+        this.name = new CarName(name);
+        this.position = new Position(0);
+    }
+
+    public Car(String name, int position) {
+        this.name = new CarName(name);
+        this.position = new Position(position);
+    }
+
+    /**
+     * 자동차를 앞으로 전진시킵니다.
+     */
+    public void move(int randomNo) {
+        if (randomNo >= MOVE_BOUND) {
+            this.position.add(MOVE_STEP);
+        }
+    }
+
+    public int maxComparedTo(int maxScore) {
+        return this.position.maxComparedTo(maxScore);
+    }
+
+    public String getName() {
+        return name.getName();
+    }
+
+    public Boolean isSame(int input) {
+        return this.position.isSame(input);
+    }
+
+    public int getPosition() {
+        return position.getPosition();
+    }
+}

src/main/java/domain/CarName.java

@@ -0,0 +1,23 @@
+package domain;
+
+public class CarName {
+
+    private static final int MAX_LENGTH = 5;
+    private final String value;
+
+    public CarName(String value) {
+        if (value == null || value.trim().isEmpty()) {
+            throw new IllegalArgumentException("자동차 이름은 비어 있을 수 없습니다");
+        }
+
+        if (value.trim().length() > 5) {
+            throw new IllegalArgumentException("자동차 이름은 5자를 초과할 수 없습니다");
+        }
+
+        this.value = value;
+    }
+
+    public String getName() {
+        return value;
+    }
+}

src/main/java/domain/Position.java

@@ -0,0 +1,28 @@
+package domain;
+
+public class Position {
+    private int value;
+
+    public Position(int value) {
+        if (value < 0) {
+            throw new IllegalArgumentException("위치 값은 음수가 올 수 없습니다");
+        }
+        this.value = value;
+    }
+
+    public void add(int moveStep) {
+        this.value += moveStep;
+    }
+
+    public int maxComparedTo(int input) {
+        return Math.max(this.value, input);
+    }
+
+    public Boolean isSame(int input) {
+        return value == input;
+    }
+
+    public int getPosition() {
+        return value;
+    }
+}

src/main/java/domain/Racing.java

@@ -0,0 +1,33 @@
+package domain;
+
+import java.util.ArrayList;
+import java.util.List;
+import util.RandomUtil;
+
+public class Racing {
+    private final List<Car> carList = new ArrayList<>(); // 자동차 리스트
+
+    /**
+     * @param carNames
+     * 레이싱 초기화
+     */
+    public Racing(List<String> carNames) {
+        for (String name : carNames) {
+            carList.add(new Car(name));
+        }
+    }
+
+    /**
+     * 레이싱 시작
+     */
+    public void start() {
+        for (Car car : carList) {
+            int randomNo = RandomUtil.generate();
+            car.move(randomNo);
+        }
+    }
+
+    public List<Car> getCarList() {
+        return carList;
+    }
+}

src/main/java/domain/Winners.java

@@ -0,0 +1,27 @@
+package domain;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.stream.Collectors;
+
+public class Winners {
+
+    /**
+     * 우승자를 찾습니다.
+     * @param cars
+     * @return
+     */
+    public static List<Car> findWinners(List<Car> cars) {
+
+        int maxScore = 0;
+        for (Car car : cars) {
+            maxScore = car.maxComparedTo(maxScore);
+        }
+
+        int finalMaxScore = maxScore;
+
+        return cars.stream()
+            .filter(car -> car.isSame(finalMaxScore))
+            .collect(Collectors.toList());
+    }
+}

src/main/java/util/RandomUtil.java

@@ -0,0 +1,11 @@
+package util;
+
+import java.util.Random;
+
+public class RandomUtil {
+    private static final int BOUND = 10;
+
+    public static int generate() {
+        return new Random().nextInt(BOUND);
+    }
+}

src/main/java/InputView.java → src/main/java/view/InputView.java

@@ -1,3 +1,5 @@
+package view;
+
 import java.util.ArrayList;
 import java.util.Scanner;
 import java.util.List;

src/main/java/view/ResultView.java

@@ -0,0 +1,31 @@
+package view;
+
+import domain.Car;
+import domain.Racing;
+import domain.Winners;
+import java.util.List;
+import java.util.stream.Collectors;
+
+public class ResultView {
+
+    public static void printRaceRound(Racing racing) {
+        for (Car car : racing.getCarList()) {
+            System.out.println(car.getName() + " : " + "-".repeat(car.getPosition()));
+        }
+        System.out.println("\n");
+    }
+
+    public static void printExecuteResult() {
+        System.out.println("실행 결과");
+    }
+
+    public static void printWinner(Racing racing) {
+        List<Car> winners = Winners.findWinners(racing.getCarList());
+
+        String winnerNames = winners.stream()
+            .map(Car::getName)
+            .collect(Collectors.joining(", "));
+
+        System.out.println(winnerNames + "가 최종 우승했습니다.");
+    }
+}