feat : 게임 캐릭터 체크 api 추가

src/main/java/org/ezcode/codetest/application/game/dto/response/character/CharacterCheckResponse.java

@@ -0,0 +1,11 @@
+package org.ezcode.codetest.application.game.dto.response.character;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+
+@Schema(description = "캐릭터 생성 여부 확인 response")
+public record CharacterCheckResponse(
+
+	boolean isCharacterExist
+
+) {
+}

src/main/java/org/ezcode/codetest/application/game/play/GamePlayUseCase.java

@@ -7,6 +7,7 @@
 import org.ezcode.codetest.application.game.dto.request.encounter.EncounterChoiceRequest;
 import org.ezcode.codetest.application.game.dto.request.skill.SkillEquipRequest;
 import org.ezcode.codetest.application.game.dto.request.skill.SkillUnEquipRequest;
+import org.ezcode.codetest.application.game.dto.response.character.CharacterCheckResponse;
 import org.ezcode.codetest.application.game.dto.response.character.CharacterStatusResponse;
 import org.ezcode.codetest.application.game.dto.response.encounter.BattleHistoryResponse;
 import org.ezcode.codetest.application.game.dto.response.encounter.DefenceBattleHistoryResponse;
@@ -59,6 +60,12 @@ public void createCharacter(String email) {
 		characterService.createGameCharacter(new GameCharacter(user));
 	}
 
+	@Transactional
+	public CharacterCheckResponse isCharacterExist(Long userId) {
+
+		return new CharacterCheckResponse(characterService.isCharacterExist(userId));
+	}
+
 	@Transactional
 	public CharacterStatusResponse characterStatusOpen(Long userId) {
 

src/main/java/org/ezcode/codetest/domain/game/exception/GameExceptionCode.java

@@ -14,7 +14,7 @@ public enum GameExceptionCode implements ResponseCode {
 	ITEM_NOT_FOUND(false, HttpStatus.NOT_FOUND, "해당 아이템이 인벤토리에 없습니다."),
 	SKILL_NOT_EXISTS(false, HttpStatus.NOT_FOUND, "해당 스킬이 존재하지 않습니다."),
 	ITEM_NOT_EXISTS(false, HttpStatus.NOT_FOUND, "해당 아이템이 존재하지 않습니다."),
-	CHARACTER_NOT_FOUND(false, HttpStatus.NOT_FOUND, "해당 캐릭터가 조회되지 없습니다."),
+	CHARACTER_NOT_FOUND(false, HttpStatus.NOT_FOUND, "해당 캐릭터가 조회되지 않습니다."),
 	RANDOM_CHARACTER_MATCHING_FAIL(false, HttpStatus.NOT_FOUND, "현재 매칭가능한 유저가 존재하지 않습니다."),
 	NOT_ENOUGH_GOLD(false, HttpStatus.BAD_REQUEST, "도박을 하기에 충분한 골드가 있지 않습니다."),
 	SKILL_NOT_FOUND(false, HttpStatus.NOT_FOUND, "해당 스킬이 조회되지 없습니다."),

src/main/java/org/ezcode/codetest/domain/game/repository/GameCharacterRepository.java

@@ -11,4 +11,6 @@ public interface GameCharacterRepository {
 	Optional<GameCharacter> findByUserId(Long userId);
 
 	Optional<GameCharacter> findRandomCharacter(Long userId);
+
+	boolean isCharacterExist(Long userId);
 }

src/main/java/org/ezcode/codetest/domain/game/service/CharacterStatusDomainService.java

@@ -51,6 +51,11 @@ public GameCharacter createGameCharacter(GameCharacter character) {
 		return savedCharacter;
 	}
 
+	public boolean isCharacterExist(Long userId) {
+
+		return characterRepository.isCharacterExist(userId);
+	}
+
 	public GameCharacter getGameCharacter(Long userId) {
 
 		return characterRepository.findByUserId(userId)

src/main/java/org/ezcode/codetest/infrastructure/persistence/repository/game/mysql/character/GameCharacterJpaRepository.java

@@ -20,4 +20,6 @@ public interface GameCharacterJpaRepository extends JpaRepository<GameCharacter,
 
 	@Cacheable(value = "counts", key = "'count'")
 	long count();
+
+	boolean existsByUserId(Long userId);
 }

src/main/java/org/ezcode/codetest/infrastructure/persistence/repository/game/mysql/character/GameCharacterRepositoryImpl.java

@@ -21,6 +21,12 @@ public GameCharacter save(GameCharacter character) {
 		return characterRepository.save(character);
 	}
 
+	@Override
+	public boolean isCharacterExist(Long userId) {
+
+		return characterRepository.existsByUserId(userId);
+	}
+
 	@Override
 	public Optional<GameCharacter> findByUserId(Long userId) {
 

src/main/java/org/ezcode/codetest/presentation/game/play/GamePlayController.java

@@ -8,6 +8,7 @@
 import org.ezcode.codetest.application.game.dto.request.item.ItemGamblingRequest;
 import org.ezcode.codetest.application.game.dto.request.skill.SkillEquipRequest;
 import org.ezcode.codetest.application.game.dto.request.skill.SkillUnEquipRequest;
+import org.ezcode.codetest.application.game.dto.response.character.CharacterCheckResponse;
 import org.ezcode.codetest.application.game.dto.response.character.CharacterStatusResponse;
 import org.ezcode.codetest.application.game.dto.response.encounter.BattleHistoryResponse;
 import org.ezcode.codetest.application.game.dto.response.encounter.DefenceBattleHistoryResponse;
@@ -60,6 +61,20 @@ public ResponseEntity<Void> createCharacter(
 		return ResponseEntity.status(HttpStatus.CREATED).build();
 	}
 
+	@Operation(
+		summary = "게임 캐릭터 생성 확인 API",
+		description = "현재 사용자가 게임 캐릭터를 생성했는지 확인합니다..",
+		responses = {
+			@ApiResponse(responseCode = "200", description = "확인후 true / false 반환")
+		}
+	)
+	@GetMapping("/characters/check")
+	public ResponseEntity<CharacterCheckResponse> checkCharacter(
+		@AuthenticationPrincipal AuthUser authUser
+	) {
+		return ResponseEntity.status(HttpStatus.OK).body(gamePlayUseCase.isCharacterExist(authUser.getId()));
+	}
+
 	@Operation(
 		summary = "스테이터스 조회 API",
 		description = "현재 캐릭터의 상태를 조회합니다.",

src/main/resources/templates/chat-page.html

@@ -262,9 +262,9 @@ <h2>채팅방 목록</h2>
         stompClient = Stomp.over(socket);
 
         // ─── Heartbeat 5분(300,000ms) 설정 ───
-        stompClient.heartbeat.outgoing = 300000; // 클라이언트→서버 heartbeat 전송 간격
-        stompClient.heartbeat.incoming = 300000; // 서버→클라이언트 heartbeat 수신 허용 최대 간격
-        const hbHeader = {'heart-beat': '300000,300000'};
+        stompClient.heartbeat.outgoing = 20000; // 클라이언트→서버 heartbeat 전송 간격
+        stompClient.heartbeat.incoming = 600000; // 서버→클라이언트 heartbeat 수신 허용 최대 간격
+        const hbHeader = {'heart-beat': '20000,600000'};
         // ────────────────────────────────────
 
         stompClient.connect(