feat(content-comment): 콘텐츠 댓글/후원 시 언어 코드가 null인 경우 파파고 언어 감지 API를 호출하는 기능 추가

src/main/kotlin/kr/co/vividnext/sodalive/content/donation/AudioContentDonationService.kt

@@ -4,9 +4,12 @@ import kr.co.vividnext.sodalive.can.payment.CanPaymentService
 import kr.co.vividnext.sodalive.can.use.CanUsage
 import kr.co.vividnext.sodalive.common.SodaException
 import kr.co.vividnext.sodalive.content.AudioContentRepository
+import kr.co.vividnext.sodalive.content.LanguageDetectEvent
+import kr.co.vividnext.sodalive.content.LanguageDetectTargetType
 import kr.co.vividnext.sodalive.content.comment.AudioContentComment
 import kr.co.vividnext.sodalive.content.comment.AudioContentCommentRepository
 import kr.co.vividnext.sodalive.member.Member
+import org.springframework.context.ApplicationEventPublisher
 import org.springframework.stereotype.Service
 import org.springframework.transaction.annotation.Transactional
 
@@ -14,7 +17,8 @@ import org.springframework.transaction.annotation.Transactional
 class AudioContentDonationService(
     private val canPaymentService: CanPaymentService,
     private val queryRepository: AudioContentRepository,
-    private val commentRepository: AudioContentCommentRepository
+    private val commentRepository: AudioContentCommentRepository,
+    private val applicationEventPublisher: ApplicationEventPublisher
 ) {
     @Transactional
     fun donation(request: AudioContentDonationRequest, member: Member) {
@@ -39,6 +43,18 @@ class AudioContentDonationService(
         )
         audioContentComment.audioContent = audioContent
         audioContentComment.member = member
-        commentRepository.save(audioContentComment)
+
+        val savedComment = commentRepository.save(audioContentComment)
+
+        // 언어 코드가 지정되지 않은 경우, 파파고 언어 감지 API를 통해 비동기로 언어를 식별한다.
+        if (request.languageCode.isNullOrBlank()) {
+            applicationEventPublisher.publishEvent(
+                LanguageDetectEvent(
+                    commentId = savedComment.id!!,
+                    query = request.comment,
+                    targetType = LanguageDetectTargetType.COMMENT
+                )
+            )
+        }
     }
 }