✨ feat: 룸 전체 조회 API 구현

Author: LimKangHyun

backend/src/main/java/io/f1/backend/domain/game/api/RoomController.java

@@ -4,11 +4,15 @@
 import io.f1.backend.domain.game.dto.request.RoomCreateRequest;
 import io.f1.backend.domain.game.dto.response.RoomCreateResponse;
 
+import io.f1.backend.domain.game.dto.response.RoomListResponse;
+import io.f1.backend.domain.game.model.Room;
 import jakarta.validation.Valid;
 
+import java.util.List;
 import lombok.RequiredArgsConstructor;
 
 import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RequestMapping;
@@ -35,4 +39,9 @@ public RoomCreateResponse saveRoom(@RequestBody @Valid RoomCreateRequest request
 
         return roomService.saveRoom(request, loginUser);
     }
+
+    @GetMapping
+    public RoomListResponse getAllRooms() {
+        return roomService.getAllRooms();
+    }
 }

backend/src/main/java/io/f1/backend/domain/game/app/RoomService.java

@@ -2,14 +2,20 @@
 
 import static io.f1.backend.domain.game.mapper.RoomMapper.toRoomSetting;
 
+import io.f1.backend.domain.game.dto.response.RoomListResponse;
 import io.f1.backend.domain.game.dto.request.RoomCreateRequest;
 import io.f1.backend.domain.game.dto.response.RoomCreateResponse;
+import io.f1.backend.domain.game.dto.response.RoomResponse;
+import io.f1.backend.domain.game.mapper.RoomMapper;
 import io.f1.backend.domain.game.model.GameSetting;
 import io.f1.backend.domain.game.model.Player;
 import io.f1.backend.domain.game.model.Room;
 import io.f1.backend.domain.game.model.RoomSetting;
 import io.f1.backend.domain.game.store.RoomRepository;
 
+import io.f1.backend.domain.quiz.entity.Quiz;
+import io.f1.backend.domain.user.entity.User;
+import java.util.List;
 import lombok.RequiredArgsConstructor;
 
 import org.springframework.stereotype.Service;
@@ -38,4 +44,24 @@ public RoomCreateResponse saveRoom(RoomCreateRequest request, Map<String, Object
 
         return new RoomCreateResponse(newId);
     }
+
+    // todo quizService에서 퀴즈 조회 메서드로 변경
+    public RoomListResponse getAllRooms() {
+        List<Room> rooms = roomRepository.findAll();
+        List<RoomResponse> roomResponses = rooms.stream().map(room -> {
+
+            User user = new User(); // 임시 유저 객체
+            user.setNickname("임시 유저 닉네임");
+
+            Quiz quiz = new Quiz(); // 임시 퀴즈 객체
+            quiz.setTitle("임시 퀴즈 제목");
+            quiz.setDescription("임시 퀴즈 설명");
+            quiz.setThumbnailUrl("임시 이미지");
+            quiz.setQuestions(List.of());
+            quiz.setCreator(user);
+
+            return RoomMapper.toRoomResponse(room, quiz);
+        }).toList();
+        return new RoomListResponse(roomResponses);
+    }
 }

backend/src/main/java/io/f1/backend/domain/game/mapper/RoomMapper.java

@@ -1,12 +1,31 @@
 package io.f1.backend.domain.game.mapper;
 
 import io.f1.backend.domain.game.dto.request.RoomCreateRequest;
+import io.f1.backend.domain.game.dto.response.RoomResponse;
+import io.f1.backend.domain.game.model.Room;
 import io.f1.backend.domain.game.model.RoomSetting;
+import io.f1.backend.domain.quiz.entity.Quiz;
 
 public class RoomMapper {
 
     public static RoomSetting toRoomSetting(RoomCreateRequest request) {
         return new RoomSetting(
                 request.roomName(), request.maxUserCount(), request.locked(), request.password());
     }
+
+    public static RoomResponse toRoomResponse(Room room, Quiz quiz) {
+        return new RoomResponse(
+            room.getId(),
+            room.getRoomSetting().roomName(),
+            room.getRoomSetting().maxUserCount(),
+            room.getPlayerSessionMap().size(),
+            room.getRoomSetting().locked(),
+            room.getState().name(),
+            quiz.getTitle(),
+            quiz.getDescription(),
+            quiz.getCreator().getNickname(),
+            quiz.getQuestions().size(),
+            quiz.getThumbnailUrl()
+        );
+    }
 }

backend/src/main/java/io/f1/backend/domain/game/store/RoomRepository.java

@@ -1,7 +1,12 @@
 package io.f1.backend.domain.game.store;
 
 import io.f1.backend.domain.game.model.Room;
+import java.util.List;
 
 public interface RoomRepository {
+
     void saveRoom(Room room);
+
+    List<Room> findAll();
+
 }

backend/src/main/java/io/f1/backend/domain/game/store/RoomRepositoryImpl.java

@@ -2,6 +2,8 @@
 
 import io.f1.backend.domain.game.model.Room;
 
+import java.util.ArrayList;
+import java.util.List;
 import org.springframework.stereotype.Repository;
 
 import java.util.Map;
@@ -17,6 +19,11 @@ public void saveRoom(Room room) {
         roomMap.put(room.getId(), room);
     }
 
+    @Override
+    public List<Room> findAll() {
+        return new ArrayList<>(roomMap.values());
+    }
+
     // 테스트 전용 메소드
     public Room getRoomForTest(Long roomId) {
         return roomMap.get(roomId);