2주차 미션 / 서버 3조 이윤희

src/main/java/ladder/Direction.java

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+package ladder;
+
+public enum Direction {
+
+    LEFT(-1), RIGHT(1), NONE(0);
+
+    private final int value;
+
+    Direction(int value) {
+        this.value = value;
+    }
+
+    public int getValue() {
+        return value;
+    }
+}

src/main/java/ladder/ExceptionMessage.java

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+package ladder;
+
+public enum ExceptionMessage {
+
+    INVALID_LADDER_POSITION("사다리 위치는 0이상 입니다."),
+    INVALID_LADDER_NUMBER("사다리의 행과 열은 2 이상이어야 합니다."),
+    INVALID_POSITION("유효하지 않은 위치입니다."),
+    INVALID_DRAW_POSITION("사다리를 그릴 수 없는 위치입니다."),
+    INVALID_NATURAL_NUMBER("자연수가 아닙니다.");
+
+    private final String message;
+
+    ExceptionMessage(String message) {
+        this.message = message;
+    }
+
+    public String getMessage() {
+        return message;
+    }
+}

src/main/java/ladder/GreaterThanOne.java

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+package ladder;
+
+public class GreaterThanOne {
+
+    private final int number;
+
+    public GreaterThanOne(int number) {
+        validate(number);
+        this.number = number;
+    }
+
+    public int getNumber() {
+        return number;
+    }
+
+    public static GreaterThanOne from(int number) {
+        return new GreaterThanOne(number);
+    }
+
+    private void validate(int number) {
+        if (!isGreaterThanOne(number)) {
+            throw new IllegalArgumentException(ExceptionMessage.INVALID_LADDER_NUMBER.getMessage());
+        }
+    }
+
+    private static boolean isGreaterThanOne(int number) {
+        return number > 1;
+    }
+}

src/main/java/ladder/LadderGame.java

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+package ladder;
+
+import ladder.creator.LadderCreator;
+import ladder.creator.LadderManualCreator;
+import ladder.creator.LadderRandomCreator;
+
+public class LadderGame {
+
+    // LadderGame의 instance 변수로 LadderCreator 선언
+    private final LadderCreator ladderCreator;
+
+    // LadderGame은 사다리를 직접 만들지 않고 LadderCreator에 의존
+    // 외부에서 의존성 주입해준다 -> DI
+    public LadderGame(LadderCreator ladderCreator){
+        this.ladderCreator = ladderCreator;
+    }
+
+    public LadderCreator getLadderCreator() {
+        return ladderCreator;
+    }
+
+    public int run(Position position) {
+        LadderRunner ladderRunner = new LadderRunner(ladderCreator.getRows());
+        ladderRunner.run(position);
+        return position.getValue();
+    }
+}

src/main/java/ladder/LadderGameFactory.java

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+package ladder;
+
+import ladder.creator.LadderManualCreator;
+import ladder.creator.LadderRandomCreator;
+
+// 정적 팩토리 매소드 패턴
+// 클라이언트 코드 (테스트 & 서비스 코드) 에서 직접 생성자를 호출하지 않도록 감싸줌
+// 외부에 의존성이 드러나지 않도록 하고 생성 책임을 Factory가 맡음
+
+public class LadderGameFactory {
+
+    public static LadderGame createRandomLadderGame(GreaterThanOne numberOfRow, GreaterThanOne numberOfPerson) {
+        LadderManualCreator manualCreator = new LadderManualCreator(numberOfRow, numberOfPerson);
+        return new LadderGame(new LadderRandomCreator(manualCreator, numberOfRow, numberOfPerson));
+    }
+
+    public static LadderGame createManualLadderGame(GreaterThanOne numberOfRow, GreaterThanOne numberOfPerson) {
+        return new LadderGame(new LadderManualCreator(numberOfRow, numberOfPerson));
+    }
+}

src/main/java/ladder/LadderPosition.java

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+package ladder;
+
+public class LadderPosition {
+
+    Position row, column;
+
+    public LadderPosition(Position row, Position column) {
+        this.row = row;
+        this.column = column;
+    }
+
+    public Position getRow() {
+        return row;
+    }
+    public Position getColumn() {
+        return column;
+    }
+}

src/main/java/ladder/LadderRunner.java

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+package ladder;
+
+public class LadderRunner {
+
+    private final Row[] rows;
+
+    public LadderRunner(Row[] rows) {
+        this.rows = rows;
+    }
+
+    // todo LadderPosition <- rowNumber + position
+    public void printRow(int rowNumber, int position, int currentRow) {
+        boolean isCurrent = (currentRow == rowNumber);
+        System.out.println(rows[rowNumber].rowToString(position, isCurrent));
+    }
+
+    public void printLadder(int row, int position){
+        for (int i = 0; i < rows.length; i++) {
+            printRow(i, position, row);
+        }
+        System.out.println();
+    }
+    public int run(Position position) {
+        for (int i = 0; i < rows.length; i++) {
+
+            System.out.println("Before");
+            printLadder(i, position.getValue());
+
+            rows[i].nextPosition(position);
+
+            System.out.println("After");
+            printLadder(i, position.getValue());
+        }
+        return position.getValue();
+    }
+
+}

src/main/java/ladder/LadderSize.java

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+package ladder;
+
+public class LadderSize {
+
+    private GreaterThanOne numberOfRow, numberOfPerson;
+
+    public LadderSize(GreaterThanOne numberOfRow, GreaterThanOne numberOfPerson) {
+        this.numberOfRow = numberOfRow;
+        this.numberOfPerson = numberOfPerson;
+    }
+
+    public int getNumberOfRandomLine() {
+        return (int)Math.round(this.numberOfRow.getNumber() * this.numberOfPerson.getNumber() * 0.3);
+    }
+}