fix: 크리에이터 관리자 콘텐츠 수정 - 태그 수정 기능

- 이미 있는 태그는 다시 추가되지 않도록 추가

src/main/kotlin/kr/co/vividnext/sodalive/creator/admin/content/CreatorAdminContentRepository.kt

@@ -30,6 +30,8 @@ interface CreatorAdminAudioContentQueryRepository {
     fun getAudioContent(memberId: Long, audioContentId: Long): AudioContent?
 
     fun findContentHashTagByContentIdAndIsActive(contentId: Long, isActive: Boolean): List<AudioContentHashTag>
+
+    fun findContentIdAndHashTagId(contentId: Long, hashTagId: Int): AudioContentHashTag?
 }
 
 class CreatorAdminAudioContentQueryRepositoryImpl(
@@ -145,6 +147,19 @@ class CreatorAdminAudioContentQueryRepositoryImpl(
             .fetch()
     }
 
+    override fun findContentIdAndHashTagId(contentId: Long, hashTagId: Int): AudioContentHashTag? {
+        return queryFactory
+            .selectFrom(audioContentHashTag)
+            .innerJoin(audioContentHashTag.audioContent, audioContent)
+            .innerJoin(audioContentHashTag.hashTag, hashTag)
+            .where(
+                audioContent.id.eq(contentId),
+                hashTag.id.eq(hashTagId)
+            )
+            .orderBy(audioContentHashTag.id.asc())
+            .fetchFirst()
+    }
+
     private fun formattedDateExpression(
         dateTime: DateTimePath<LocalDateTime>,
         format: String = "%Y-%m-%d"

src/main/kotlin/kr/co/vividnext/sodalive/creator/admin/content/CreatorAdminContentService.kt

@@ -184,7 +184,8 @@ class CreatorAdminContentService(
                 val hashTag = hashTagRepository.findByTag(tag)
                     ?: hashTagRepository.save(HashTag(tag))
 
-                val audioContentHashTag = AudioContentHashTag()
+                val audioContentHashTag = repository.findContentIdAndHashTagId(request.id, hashTag.id!!)
+                    ?: AudioContentHashTag()
                 audioContentHashTag.audioContent = audioContent
                 audioContentHashTag.hashTag = hashTag