feat: 특정 유저의 팔로잉/팔로워 목록 조회 API 추가

InJunKangW · InJunKangW · commit 85773a6e7ec5 · 2025-04-16T01:13:21.000+09:00
diff --git a/db_dev.mv.db b/db_dev.mv.db
diff --git a/src/main/java/com/example/log4u/domain/follow/controller/FollowController.java b/src/main/java/com/example/log4u/domain/follow/controller/FollowController.java
@@ -4,12 +4,16 @@
 import org.springframework.security.core.annotation.AuthenticationPrincipal;
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
 
+import com.example.log4u.common.dto.PageResponse;
 import com.example.log4u.common.oauth2.dto.CustomOAuth2User;
 import com.example.log4u.domain.follow.service.FollowService;
+import com.example.log4u.domain.user.dto.UserThumbnailResponseDto;
 
 import io.swagger.v3.oas.annotations.tags.Tag;
 import lombok.RequiredArgsConstructor;
@@ -38,4 +42,22 @@ public ResponseEntity<Void> deleteFollow(
 		followService.deleteFollow(customOAuth2User.getUserId(), nickname);
 		return ResponseEntity.ok().build();
 	}
+
+	@GetMapping("/{nickname}/followers")
+	public ResponseEntity<PageResponse<UserThumbnailResponseDto>> getFollowersByUserId(
+		@PathVariable String nickname,
+		@RequestParam(required = false) Long cursorId,
+		@RequestParam(required = false) String keyword
+	) {
+		return ResponseEntity.ok(followService.getFollowersByNickname(nickname, cursorId, keyword));
+	}
+
+	@GetMapping("/{nickname}/followings")
+	public ResponseEntity<PageResponse<UserThumbnailResponseDto>> getFollowingsByUserId(
+		@PathVariable String nickname,
+		@RequestParam(required = false) Long cursorId,
+		@RequestParam(required = false) String keyword
+	) {
+		return ResponseEntity.ok(followService.getFollowingsByNickname(nickname, cursorId, keyword));
+	}
 }
diff --git a/src/main/java/com/example/log4u/domain/follow/service/FollowService.java b/src/main/java/com/example/log4u/domain/follow/service/FollowService.java
@@ -1,19 +1,26 @@
 package com.example.log4u.domain.follow.service;
 
+import org.springframework.data.domain.PageRequest;
+import org.springframework.data.domain.Slice;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
+import com.example.log4u.common.dto.PageResponse;
 import com.example.log4u.domain.follow.entitiy.Follow;
 import com.example.log4u.domain.follow.exception.FollowNotFoundException;
+import com.example.log4u.domain.follow.repository.FollowQuerydsl;
 import com.example.log4u.domain.follow.repository.FollowRepository;
+import com.example.log4u.domain.user.dto.UserThumbnailResponseDto;
 import com.example.log4u.domain.user.service.UserService;
 
 import lombok.RequiredArgsConstructor;
 
 @Service
 @RequiredArgsConstructor
 public class FollowService {
+	private final int defaultPageSize = 6;
 	private final FollowRepository followRepository;
+	private final FollowQuerydsl followQuerydsl;
 	private final UserService userService;
 
 	@Transactional
@@ -62,4 +69,46 @@ public Long getFollowingCount(Long userId) {
 	public boolean existsFollow(Long initiatorId, Long targetId) {
 		return followRepository.existsByInitiatorIdAndTargetId(initiatorId, targetId);
 	}
+
+	@Transactional(readOnly = true)
+	public PageResponse<UserThumbnailResponseDto> getFollowersByNickname(String nickname, Long cursorId,
+		String keyword) {
+		Long userId = userService.getUserIdByNickname(nickname);
+
+		return getFollowersByUserId(userId, cursorId, keyword);
+	}
+
+	@Transactional(readOnly = true)
+	public PageResponse<UserThumbnailResponseDto> getFollowingsByNickname(String nickname, Long cursorId,
+		String keyword) {
+		Long userId = userService.getUserIdByNickname(nickname);
+
+		return getFollowingsByUserId(userId, cursorId, keyword);
+	}
+
+	@Transactional(readOnly = true)
+	public PageResponse<UserThumbnailResponseDto> getFollowersByUserId(Long userId, Long cursorId, String keyword) {
+		Slice<UserThumbnailResponseDto> slice = followQuerydsl.getFollowerSliceByUserId(
+			userId,
+			cursorId,
+			keyword,
+			PageRequest.of(0, defaultPageSize));
+
+		Long nextCursor = !slice.isEmpty() ? slice.getContent().getLast().userId() : null;
+
+		return PageResponse.of(slice, nextCursor);
+	}
+
+	@Transactional(readOnly = true)
+	public PageResponse<UserThumbnailResponseDto> getFollowingsByUserId(Long userId, Long cursorId, String keyword) {
+		Slice<UserThumbnailResponseDto> slice = followQuerydsl.getFollowingSliceByUserId(
+			userId,
+			cursorId,
+			keyword,
+			PageRequest.of(0, defaultPageSize));
+
+		Long nextCursor = !slice.isEmpty() ? slice.getContent().getLast().userId() : null;
+
+		return PageResponse.of(slice, nextCursor);
+	}
 }
diff --git a/src/main/java/com/example/log4u/domain/user/mypage/controller/MyPageController.java b/src/main/java/com/example/log4u/domain/user/mypage/controller/MyPageController.java
@@ -10,6 +10,7 @@
 import com.example.log4u.common.oauth2.dto.CustomOAuth2User;
 import com.example.log4u.domain.diary.VisibilityType;
 import com.example.log4u.domain.diary.dto.DiaryResponseDto;
+import com.example.log4u.domain.follow.service.FollowService;
 import com.example.log4u.domain.subscription.dto.SubscriptionResponseDto;
 import com.example.log4u.domain.user.dto.UserThumbnailResponseDto;
 import com.example.log4u.domain.user.mypage.service.MyPageService;
@@ -20,6 +21,7 @@
 @RequiredArgsConstructor
 public class MyPageController {
 	private final MyPageService myPageService;
+	private final FollowService followService;
 
 	@GetMapping("/users/me/diaries")
 	public ResponseEntity<PageResponse<DiaryResponseDto>> getMyDiaryPage(
@@ -48,7 +50,7 @@ public ResponseEntity<PageResponse<UserThumbnailResponseDto>> getMyFollowingPage
 
 	) {
 		long userId = customOAuth2User.getUserId();
-		return ResponseEntity.ok(myPageService.getMyFollowings(userId, cursorId, keyword));
+		return ResponseEntity.ok(followService.getFollowingsByUserId(userId, cursorId, keyword));
 	}
 
 	@GetMapping("/users/me/followers")
@@ -58,7 +60,7 @@ public ResponseEntity<PageResponse<UserThumbnailResponseDto>> getMyFollowerPage(
 		@RequestParam(required = false) String keyword
 	) {
 		long userId = customOAuth2User.getUserId();
-		return ResponseEntity.ok(myPageService.getMyFollowers(userId, cursorId, keyword));
+		return ResponseEntity.ok(followService.getFollowersByUserId(userId, cursorId, keyword));
 	}
 
 	@GetMapping("/users/me/subscriptions")
diff --git a/src/main/java/com/example/log4u/domain/user/mypage/service/MyPageService.java b/src/main/java/com/example/log4u/domain/user/mypage/service/MyPageService.java
@@ -3,21 +3,17 @@
 import java.time.LocalDateTime;
 import java.util.Optional;
 
-import org.springframework.data.domain.PageRequest;
-import org.springframework.data.domain.Slice;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
 import com.example.log4u.common.dto.PageResponse;
 import com.example.log4u.domain.diary.VisibilityType;
 import com.example.log4u.domain.diary.dto.DiaryResponseDto;
 import com.example.log4u.domain.diary.service.DiaryService;
-import com.example.log4u.domain.follow.repository.FollowQuerydsl;
 import com.example.log4u.domain.subscription.PaymentStatus;
 import com.example.log4u.domain.subscription.dto.SubscriptionResponseDto;
 import com.example.log4u.domain.subscription.entity.Subscription;
 import com.example.log4u.domain.subscription.repository.SubscriptionRepository;
-import com.example.log4u.domain.user.dto.UserThumbnailResponseDto;
 
 import lombok.RequiredArgsConstructor;
 
@@ -27,7 +23,6 @@
 public class MyPageService {
 	private final int defaultPageSize = 6;
 	private final DiaryService diaryService;
-	private final FollowQuerydsl followQuerydsl;
 	private final SubscriptionRepository subscriptionRepository;
 
 	@Transactional(readOnly = true)
@@ -43,32 +38,6 @@ public PageResponse<DiaryResponseDto> getLikeDiariesByCursor(Long userId, Long c
 			cursorId, defaultPageSize);
 	}
 
-	@Transactional(readOnly = true)
-	public PageResponse<UserThumbnailResponseDto> getMyFollowers(Long userId, Long cursorId, String keyword) {
-		Slice<UserThumbnailResponseDto> slice = followQuerydsl.getFollowerSliceByUserId(
-			userId,
-			cursorId,
-			keyword,
-			PageRequest.of(0, defaultPageSize));
-
-		Long nextCursor = !slice.isEmpty() ? slice.getContent().getLast().userId() : null;
-
-		return PageResponse.of(slice, nextCursor);
-	}
-
-	@Transactional(readOnly = true)
-	public PageResponse<UserThumbnailResponseDto> getMyFollowings(Long userId, Long cursorId, String keyword) {
-		Slice<UserThumbnailResponseDto> slice = followQuerydsl.getFollowingSliceByUserId(
-			userId,
-			cursorId,
-			keyword,
-			PageRequest.of(0, defaultPageSize));
-
-		Long nextCursor = !slice.isEmpty() ? slice.getContent().getLast().userId() : null;
-
-		return PageResponse.of(slice, nextCursor);
-	}
-
 	@Transactional(readOnly = true)
 	public SubscriptionResponseDto getMySubscription(Long userId) {
 		Optional<Subscription> optionalSubscription = subscriptionRepository
diff --git a/src/test/java/com/example/log4u/domain/user/mypage/service/MyPageServiceTest.java b/src/test/java/com/example/log4u/domain/user/mypage/service/MyPageServiceTest.java
@@ -15,20 +15,17 @@
 import org.mockito.InjectMocks;
 import org.mockito.Mock;
 import org.mockito.junit.jupiter.MockitoExtension;
-import org.springframework.data.domain.PageRequest;
 import org.springframework.data.domain.SliceImpl;
 
 import com.example.log4u.common.dto.PageResponse;
 import com.example.log4u.domain.diary.VisibilityType;
 import com.example.log4u.domain.diary.dto.DiaryResponseDto;
 import com.example.log4u.domain.diary.service.DiaryService;
-import com.example.log4u.domain.follow.repository.FollowQuerydsl;
 import com.example.log4u.domain.subscription.PaymentProvider;
 import com.example.log4u.domain.subscription.PaymentStatus;
 import com.example.log4u.domain.subscription.dto.SubscriptionResponseDto;
 import com.example.log4u.domain.subscription.entity.Subscription;
 import com.example.log4u.domain.subscription.repository.SubscriptionRepository;
-import com.example.log4u.domain.user.dto.UserThumbnailResponseDto;
 import com.example.log4u.fixture.DiaryFixture;
 
 @ExtendWith(MockitoExtension.class)
@@ -39,9 +36,6 @@ public class MyPageServiceTest {
 	@Mock
 	private DiaryService diaryService;
 
-	@Mock
-	private FollowQuerydsl followQuerydsl;
-
 	@Mock
 	private SubscriptionRepository subscriptionRepository;
 
@@ -89,32 +83,6 @@ void getLikeDiariesByCursor_returnsCorrectData() {
 		verify(diaryService).getLikeDiariesByCursor(userId, userId, cursorId, 6);
 	}
 
-	@DisplayName("성공 테스트 : 내 팔로워 조회")
-	@Test
-	void getMyFollowers_returnsCorrectData() {
-		var slice = new SliceImpl<>(List.of(new UserThumbnailResponseDto(userId, "nick", "image")));
-
-		when(followQuerydsl.getFollowerSliceByUserId(eq(userId), eq(cursorId), any(), any(PageRequest.class)))
-			.thenReturn(slice);
-
-		PageResponse<UserThumbnailResponseDto> result = myPageService.getMyFollowers(userId, cursorId, null);
-
-		assertThat(result).isNotNull();
-	}
-
-	@DisplayName("성공 테스트 : 내 팔로잉 조회")
-	@Test
-	void getMyFollowings_returnsCorrectData() {
-		var slice = new SliceImpl<>(List.of(new UserThumbnailResponseDto(userId, "nick", "image")));
-
-		when(followQuerydsl.getFollowingSliceByUserId(eq(userId), eq(cursorId), any(), any(PageRequest.class)))
-			.thenReturn(slice);
-
-		PageResponse<UserThumbnailResponseDto> result = myPageService.getMyFollowings(userId, cursorId, null);
-
-		assertThat(result).isNotNull();
-	}
-
 	@DisplayName("구독 정보 조회 - 구독이 있을 때")
 	@Test
 	void getMySubscription_whenExists_returnsActiveSubscription() {
