feat: 明示的にフォロワー/フォロイー/投稿の数を更新する関数を追加

src/main/kotlin/dev/usbharu/hideout/core/domain/model/post/PostRepository.kt

@@ -30,4 +30,6 @@ interface PostRepository {
     suspend fun findByApId(apId: String): Post?
     suspend fun existByApIdWithLock(apId: String): Boolean
     suspend fun findByActorId(actorId: Long): List<Post>
+
+    suspend fun countByActorId(actorId: Long): Int
 }

src/main/kotlin/dev/usbharu/hideout/core/domain/model/relationship/RelationshipRepository.kt

@@ -52,17 +52,21 @@ interface RelationshipRepository {
 
     suspend fun findByTargetIdAndFollowing(targetId: Long, following: Boolean): List<Relationship>
 
+    suspend fun countByTargetIdAndFollowing(targetId: Long, following: Boolean): Int
+
+    suspend fun countByUserIdAndFollowing(targetId: Long, following: Boolean): Int
+
     @Suppress("FunctionMaxLength")
     suspend fun findByTargetIdAndFollowRequestAndIgnoreFollowRequest(
         targetId: Long,
         followRequest: Boolean,
         ignoreFollowRequest: Boolean,
-        page: Page.PageByMaxId
+        page: Page.PageByMaxId,
     ): PaginationList<Relationship, Long>
 
     suspend fun findByActorIdAndMuting(
         actorId: Long,
         muting: Boolean,
-        page: Page.PageByMaxId
+        page: Page.PageByMaxId,
     ): PaginationList<Relationship, Long>
 }

src/main/kotlin/dev/usbharu/hideout/core/service/user/UserService.kt

@@ -33,4 +33,6 @@ interface UserService {
     suspend fun deleteRemoteActor(actorId: Long)
 
     suspend fun deleteLocalUser(userId: Long)
+
+    suspend fun updateUserStatistics(userId: Long)
 }

src/main/kotlin/dev/usbharu/hideout/core/service/user/UserServiceImpl.kt

@@ -24,6 +24,7 @@ import dev.usbharu.hideout.core.domain.model.actor.Actor
 import dev.usbharu.hideout.core.domain.model.actor.ActorRepository
 import dev.usbharu.hideout.core.domain.model.deletedActor.DeletedActor
 import dev.usbharu.hideout.core.domain.model.deletedActor.DeletedActorRepository
+import dev.usbharu.hideout.core.domain.model.post.PostRepository
 import dev.usbharu.hideout.core.domain.model.reaction.ReactionRepository
 import dev.usbharu.hideout.core.domain.model.relationship.RelationshipRepository
 import dev.usbharu.hideout.core.domain.model.userdetails.UserDetail
@@ -47,8 +48,8 @@ class UserServiceImpl(
     private val reactionRepository: ReactionRepository,
     private val relationshipRepository: RelationshipRepository,
     private val postService: PostService,
-    private val apSendDeleteService: APSendDeleteService
-
+    private val apSendDeleteService: APSendDeleteService,
+    private val postRepository: PostRepository,
 ) :
     UserService {
 
@@ -191,6 +192,22 @@ class UserServiceImpl(
         deletedActorRepository.save(deletedActor)
     }
 
+    override suspend fun updateUserStatistics(userId: Long) {
+        val actor = actorRepository.findByIdWithLock(userId) ?: throw UserNotFoundException.withId(userId)
+
+        val followerCount = relationshipRepository.countByTargetIdAndFollowing(userId, true)
+        val followingCount = relationshipRepository.countByUserIdAndFollowing(userId, true)
+        val postsCount = postRepository.countByActorId(userId)
+
+        actorRepository.save(
+            actor.copy(
+                followersCount = followerCount,
+                followingCount = followingCount,
+                postsCount = postsCount
+            )
+        )
+    }
+
     companion object {
         private val logger = LoggerFactory.getLogger(UserServiceImpl::class.java)
     }