Feat: [FN-325] 내가 신청한 가입 신청 리스트 조회 API 추가

src/main/java/flipnote/group/adapter/in/web/JoinController.java

@@ -102,5 +102,4 @@ public ResponseEntity<JoinRespondResponseDto> respondToJoinRequest(
 		return ResponseEntity.ok(res);
 	}
 
-	//todo 내가 신청한 가입신청 리스트 조회
 }

src/main/java/flipnote/group/adapter/in/web/MeController.java

@@ -0,0 +1,36 @@
+package flipnote.group.adapter.in.web;
+
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestHeader;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import flipnote.group.api.dto.response.FindMyJoinListResponseDto;
+import flipnote.group.application.port.in.FindMyJoinListUseCase;
+import flipnote.group.application.port.in.result.FindMyJoinListResult;
+import lombok.RequiredArgsConstructor;
+
+@RestController
+@RequestMapping("/v1")
+@RequiredArgsConstructor
+public class MeController {
+
+	private final FindMyJoinListUseCase findMyJoinListUseCase;
+
+	/**
+	 * 내가 신청한 가입신청 리스트 조회
+	 * @param userId
+	 * @return
+	 */
+	@GetMapping("/joins/me")
+	public ResponseEntity<FindMyJoinListResponseDto> findGroupJoinMe(
+		@RequestHeader("X-USER-ID") Long userId
+	) {
+		FindMyJoinListResult result = findMyJoinListUseCase.findMyJoinList(userId);
+
+		FindMyJoinListResponseDto res = FindMyJoinListResponseDto.from(result);
+
+		return ResponseEntity.ok(res);
+	}
+}

src/main/java/flipnote/group/adapter/out/persistence/JoinRepositoryAdapter.java

@@ -46,4 +46,11 @@ public JoinEntity findJoin(Long joinId) {
 	public JoinEntity updateJoin(JoinEntity join) {
 		return joinRepository.save(join);
 	}
+
+	@Override
+	public List<JoinEntity> findMyJoinList(Long userId) {
+		List<JoinEntity> joinList = joinRepository.findAllByUserId(userId);
+
+		return joinList;
+	}
 }

src/main/java/flipnote/group/api/dto/response/FindMyJoinListResponseDto.java

@@ -0,0 +1,15 @@
+package flipnote.group.api.dto.response;
+
+import java.util.List;
+
+import flipnote.group.application.port.in.result.FindMyJoinListResult;
+import flipnote.group.domain.model.join.JoinInfo;
+
+public record FindMyJoinListResponseDto(
+	List<JoinInfo> joinList
+) {
+	public static FindMyJoinListResponseDto from(FindMyJoinListResult result) {
+
+		return new FindMyJoinListResponseDto(result.joinList());
+	}
+}

src/main/java/flipnote/group/application/port/in/FindMyJoinListUseCase.java

@@ -0,0 +1,7 @@
+package flipnote.group.application.port.in;
+
+import flipnote.group.application.port.in.result.FindMyJoinListResult;
+
+public interface FindMyJoinListUseCase {
+	FindMyJoinListResult findMyJoinList(Long userId);
+}

src/main/java/flipnote/group/application/port/in/result/FindMyJoinListResult.java

@@ -0,0 +1,17 @@
+package flipnote.group.application.port.in.result;
+
+import java.util.List;
+
+import flipnote.group.adapter.out.entity.JoinEntity;
+import flipnote.group.domain.model.join.JoinInfo;
+
+public record FindMyJoinListResult(
+	List<JoinInfo> joinList
+) {
+	public static FindMyJoinListResult of(List<JoinEntity> joinList) {
+		List<JoinInfo> joinInfoList = joinList.stream()
+			.map(JoinInfo::of)
+			.toList();
+		return new FindMyJoinListResult(joinInfoList);
+	}
+}

src/main/java/flipnote/group/application/port/out/JoinRepositoryPort.java

@@ -14,4 +14,6 @@ public interface JoinRepositoryPort {
 	JoinEntity findJoin(Long joinId);
 
 	JoinEntity updateJoin(JoinEntity join);
+
+	List<JoinEntity> findMyJoinList(Long userId);
 }

src/main/java/flipnote/group/application/service/FindMyJoinListService.java

@@ -0,0 +1,26 @@
+package flipnote.group.application.service;
+
+import java.util.List;
+
+import org.springframework.stereotype.Service;
+
+import flipnote.group.adapter.out.entity.JoinEntity;
+import flipnote.group.application.port.in.FindMyJoinListUseCase;
+import flipnote.group.application.port.in.result.FindMyJoinListResult;
+import flipnote.group.application.port.out.JoinRepositoryPort;
+import lombok.RequiredArgsConstructor;
+
+@Service
+@RequiredArgsConstructor
+public class FindMyJoinListService implements FindMyJoinListUseCase {
+
+	private final JoinRepositoryPort joinRepository;
+
+	@Override
+	public FindMyJoinListResult findMyJoinList(Long userId) {
+
+		List<JoinEntity> joinList = joinRepository.findMyJoinList(userId);
+
+		return FindMyJoinListResult.of(joinList);
+	}
+}

src/main/java/flipnote/group/infrastructure/persistence/jpa/JoinRepository.java

@@ -11,4 +11,6 @@ public interface JoinRepository extends JpaRepository<JoinEntity, Long> {
 	boolean existsByUserIdAndGroupId(Long userId, Long groupId);
 
 	List<JoinEntity> findAllByGroupId(Long groupId);
+
+	List<JoinEntity> findAllByUserId(Long userId);
 }