✨ feat: 게임 설정 변경 인터페이스 및 구현체 추가

- GameSettingChanger 인터페이스 도입

Author: LimKangHyun

backend/src/main/java/io/f1/backend/domain/game/dto/GameSettingChanger.java

@@ -0,0 +1,8 @@
+package io.f1.backend.domain.game.dto;
+
+import io.f1.backend.domain.game.model.Room;
+import io.f1.backend.domain.quiz.app.QuizService;
+
+public interface GameSettingChanger {
+    boolean change(Room room, QuizService quizService);
+}

backend/src/main/java/io/f1/backend/domain/game/dto/QuizChangeRequest.java

@@ -0,0 +1,22 @@
+package io.f1.backend.domain.game.dto;
+
+import io.f1.backend.domain.game.model.Room;
+import io.f1.backend.domain.quiz.app.QuizService;
+import io.f1.backend.domain.quiz.entity.Quiz;
+import java.util.Objects;
+
+public record QuizChangeRequest(Long quizId) implements GameSettingChanger {
+
+    @Override
+    public boolean change(Room room, QuizService quizService) {
+        if (Objects.equals(room.getGameSetting().getQuizId(), quizId)) {
+            return false; // 동일하면 무시
+        }
+        Quiz quiz = quizService.getQuizWithQuestionsById(quizId);
+        int questionSize = quiz.getQuestions().size();
+        room.getGameSetting().changeQuiz(quiz);
+        // 퀴즈의 문제 갯수로 변경
+        room.getGameSetting().changeRound(questionSize, questionSize);
+        return true;
+    }
+}

backend/src/main/java/io/f1/backend/domain/game/dto/RoundChangeRequest.java

@@ -0,0 +1,22 @@
+package io.f1.backend.domain.game.dto;
+
+import io.f1.backend.domain.game.model.Room;
+import io.f1.backend.domain.quiz.app.QuizService;
+import io.f1.backend.domain.quiz.entity.Quiz;
+import java.util.Objects;
+
+public record RoundChangeRequest(Integer round) implements GameSettingChanger {
+
+    @Override
+    public boolean change(Room room, QuizService quizService) {
+        if (Objects.equals(room.getGameSetting().getRound(), round)) {
+            return false; // 동일하면 무시
+        }
+
+        Quiz quiz = quizService.findQuizById(room.getGameSetting().getQuizId());
+        int questionSize = quiz.getQuestions().size();
+
+        room.getGameSetting().changeRound(round, questionSize);
+        return true;
+    }
+}

backend/src/main/java/io/f1/backend/domain/game/dto/TimeLimit.java

@@ -0,0 +1,28 @@
+package io.f1.backend.domain.game.dto;
+
+import io.f1.backend.global.exception.CustomException;
+import io.f1.backend.global.exception.errorcode.GameErrorCode;
+import java.util.Arrays;
+import lombok.Getter;
+
+@Getter
+public enum TimeLimit {
+    FIFTEEN(15),
+    THIRTY(30),
+    FORTY_FIVE(45),
+    SIXTY(60);
+
+    private final int value;
+
+    TimeLimit(int value) {
+        this.value = value;
+    }
+
+    public static TimeLimit from(int value) {
+        return Arrays.stream(values())
+            .filter(t -> t.value == value)
+            .findFirst()
+            .orElseThrow(() -> new CustomException(GameErrorCode.GAME_SETTING_CONFLICT));
+    }
+
+}

backend/src/main/java/io/f1/backend/domain/game/dto/TimeLimitChangeRequest.java

@@ -0,0 +1,16 @@
+package io.f1.backend.domain.game.dto;
+
+import io.f1.backend.domain.game.model.Room;
+import io.f1.backend.domain.quiz.app.QuizService;
+
+public record TimeLimitChangeRequest(int timeLimit) implements GameSettingChanger {
+
+    @Override
+    public boolean change(Room room, QuizService quizService) {
+        if (room.getGameSetting().getTimeLimit() == timeLimit) {
+            return false; // 동일하면 무시
+        }
+        room.getGameSetting().changeTimeLimit(TimeLimit.from(timeLimit));
+        return true;
+    }
+}