src/main/kotlin/kr/co/vividnext/sodalive/v2/recommendation/adapter/out/persistence/DefaultHomeRecommendationQueryRepository.kt

@@ -15,6 +15,7 @@ import kr.co.vividnext.sodalive.chat.room.QChatMessage.chatMessage
 import kr.co.vividnext.sodalive.chat.room.QChatParticipant.chatParticipant
 import kr.co.vividnext.sodalive.content.main.banner.AudioContentBannerType
 import kr.co.vividnext.sodalive.content.main.banner.QAudioContentBanner.audioContentBanner
+import kr.co.vividnext.sodalive.content.translation.ContentTranslationRepository
 import kr.co.vividnext.sodalive.creator.admin.content.series.QSeries.series
 import kr.co.vividnext.sodalive.event.QEvent.event
 import kr.co.vividnext.sodalive.explorer.profile.creatorCommunity.QCreatorCommunity.creatorCommunity
@@ -50,7 +51,8 @@ import javax.persistence.EntityManager
 @Repository
 class DefaultHomeRecommendationQueryRepository(
     private val queryFactory: JPAQueryFactory,
-    private val entityManager: EntityManager
+    private val entityManager: EntityManager,
+    private val contentTranslationRepository: ContentTranslationRepository
 ) : HomeRecommendationQueryRepository {
     override fun findLiveRecommendations(
         offset: Long,
@@ -367,7 +369,8 @@ class DefaultHomeRecommendationQueryRepository(
         offset: Long,
         limit: Int,
         memberId: Long?,
-        includeAdultContents: Boolean
+        includeAdultContents: Boolean,
+        locale: String
     ): List<HomeFirstAudioContentRecord> {
         val sql = """
             with creator_debut as (
@@ -475,7 +478,7 @@ class DefaultHomeRecommendationQueryRepository(
         @Suppress("UNCHECKED_CAST")
         val rows = query.resultList as List<Array<Any?>>
 
-        return rows.map { row ->
+        val firstAudioContents = rows.map { row ->
             HomeFirstAudioContentRecord(
                 contentId = (row[0] as Number).toLong(),
                 creatorId = (row[1] as Number).toLong(),
@@ -489,6 +492,19 @@ class DefaultHomeRecommendationQueryRepository(
                 isOriginalSeries = row[9].toNativeBoolean()
             )
         }
+        if (firstAudioContents.isEmpty()) return emptyList()
+
+        val translatedTitleByContentId = contentTranslationRepository
+            .findByContentIdInAndLocale(firstAudioContents.map { it.contentId }, locale)
+            .mapNotNull { translation ->
+                translation.renderedPayload.title
+                    .takeIf { it.isNotBlank() }
+                    ?.let { translation.contentId to it }
+            }
+            .toMap()
+        return firstAudioContents.map { audio ->
+            translatedTitleByContentId[audio.contentId]?.let { audio.copy(title = it) } ?: audio
+        }
     }
 
     override fun findAiCharacterSnapshots(

src/test/kotlin/kr/co/vividnext/sodalive/v2/api/home/application/HomeRecommendationFacadeTest.kt

@@ -1,6 +1,7 @@
 package kr.co.vividnext.sodalive.v2.api.home.application
 
 import kr.co.vividnext.sodalive.i18n.Lang
+import kr.co.vividnext.sodalive.i18n.LangContext
 import kr.co.vividnext.sodalive.member.Member
 import kr.co.vividnext.sodalive.member.contentpreference.MemberContentPreferenceService
 import kr.co.vividnext.sodalive.v2.recommendation.application.HomeRecommendationQueryService
@@ -26,7 +27,11 @@ import java.time.LocalDateTime
 
 class HomeRecommendationFacadeTest {
     private val queryPort = FakeHomeRecommendationQueryPort()
-    private val queryService = HomeRecommendationQueryService(queryPort, EmptyRecommendationSnapshotPort())
+    private val queryService = HomeRecommendationQueryService(
+        queryPort,
+        EmptyRecommendationSnapshotPort(),
+        langContext = LangContext()
+    )
     private val preferenceService = Mockito.mock(MemberContentPreferenceService::class.java)
     private val facade = HomeRecommendationFacade(queryService, preferenceService, "https://cdn.test")
 
@@ -135,7 +140,8 @@ class HomeRecommendationFacadeTest {
             offset: Long,
             limit: Int,
             memberId: Long?,
-            includeAdultContents: Boolean
+            includeAdultContents: Boolean,
+            locale: String
         ): List<HomeFirstAudioContentRecord> = firstAudioContents
 
         override fun findAiCharacterSnapshots(

src/test/kotlin/kr/co/vividnext/sodalive/v2/recommendation/adapter/out/persistence/DefaultHomeRecommendationQueryRepositoryTest.kt

@@ -21,6 +21,9 @@ import kr.co.vividnext.sodalive.content.main.banner.AudioContentBanner
 import kr.co.vividnext.sodalive.content.main.banner.AudioContentBannerType
 import kr.co.vividnext.sodalive.content.main.tab.AudioContentMainTab
 import kr.co.vividnext.sodalive.content.theme.AudioContentTheme
+import kr.co.vividnext.sodalive.content.translation.ContentTranslation
+import kr.co.vividnext.sodalive.content.translation.ContentTranslationPayload
+import kr.co.vividnext.sodalive.content.translation.ContentTranslationRepository
 import kr.co.vividnext.sodalive.creator.admin.content.series.Series
 import kr.co.vividnext.sodalive.creator.admin.content.series.SeriesContent
 import kr.co.vividnext.sodalive.event.Event
@@ -63,9 +66,10 @@ import javax.persistence.Query
 @Import(QueryDslConfig::class)
 class DefaultHomeRecommendationQueryRepositoryTest @Autowired constructor(
     private val entityManager: EntityManager,
-    queryFactory: JPAQueryFactory
+    queryFactory: JPAQueryFactory,
+    contentTranslationRepository: ContentTranslationRepository
 ) {
-    private val repository = DefaultHomeRecommendationQueryRepository(queryFactory, entityManager)
+    private val repository = DefaultHomeRecommendationQueryRepository(queryFactory, entityManager, contentTranslationRepository)
     private val scorePolicy = RecommendationScorePolicy()
 
     @Test
@@ -1565,12 +1569,76 @@ class DefaultHomeRecommendationQueryRepositoryTest @Autowired constructor(
         ).forEach { (content, createdAt) -> updateCreatedAt("AudioContent", content.id!!, createdAt) }
         flushAndClear()
 
-        val contents = repository.findFirstAudioContents(now, limit = 10)
+        val contents = repository.findFirstAudioContents(now, limit = 10, locale = Lang.KO.code)
 
         assertEquals(listOf(eligibleActive.id), contents.map { it.contentId })
         assertEquals(12, contents.single().price)
     }
 
+    @Test
+    @DisplayName("첫 오디오 native query는 빈 문자열, 공백, 누락, 다른 언어 번역을 원문으로 대체한다")
+    fun shouldTranslateFirstAudioContentsByRequestedLocaleWithFallback() {
+        val now = LocalDateTime.of(2026, 5, 31, 10, 0)
+        val translated = saveAudioContent(
+            saveMember("translated-first-audio", MemberRole.CREATOR),
+            now.minusDays(1),
+            isActive = true
+        )
+        val empty = saveAudioContent(
+            saveMember("empty-first-audio", MemberRole.CREATOR),
+            now.minusDays(2),
+            isActive = true
+        )
+        val whitespace = saveAudioContent(
+            saveMember("whitespace-first-audio", MemberRole.CREATOR),
+            now.minusDays(3),
+            isActive = true
+        )
+        val otherLocaleOnly = saveAudioContent(
+            saveMember("other-locale-first-audio", MemberRole.CREATOR),
+            now.minusDays(4),
+            isActive = true
+        )
+        val missing = saveAudioContent(
+            saveMember("missing-first-audio", MemberRole.CREATOR),
+            now.minusDays(5),
+            isActive = true
+        )
+        saveContentTranslation(translated, "en", "first-audio-en")
+        saveContentTranslation(translated, "ja", "first-audio-ja")
+        saveContentTranslation(empty, "en", "")
+        saveContentTranslation(whitespace, "en", " ")
+        saveContentTranslation(otherLocaleOnly, "en", "other-locale-first-audio-en")
+        flushAndClear()
+
+        val englishRecords = repository.findFirstAudioContents(now, limit = 10, locale = Lang.EN.code)
+        val japaneseRecords = repository.findFirstAudioContents(now, limit = 10, locale = Lang.JA.code)
+
+        assertEquals(englishRecords.map { it.contentId }, japaneseRecords.map { it.contentId })
+        assertEquals(
+            "first-audio-en",
+            englishRecords.single { it.contentId == translated.id }.title
+        )
+        assertEquals(empty.title, englishRecords.single { it.contentId == empty.id }.title)
+        assertEquals(whitespace.title, englishRecords.single { it.contentId == whitespace.id }.title)
+        assertEquals(
+            "other-locale-first-audio-en",
+            englishRecords.single { it.contentId == otherLocaleOnly.id }.title
+        )
+        assertEquals(missing.title, englishRecords.single { it.contentId == missing.id }.title)
+        assertEquals(
+            "first-audio-ja",
+            japaneseRecords.single { it.contentId == translated.id }.title
+        )
+        assertEquals(empty.title, japaneseRecords.single { it.contentId == empty.id }.title)
+        assertEquals(whitespace.title, japaneseRecords.single { it.contentId == whitespace.id }.title)
+        assertEquals(
+            otherLocaleOnly.title,
+            japaneseRecords.single { it.contentId == otherLocaleOnly.id }.title
+        )
+        assertEquals(missing.title, japaneseRecords.single { it.contentId == missing.id }.title)
+    }
+
     @Test
     @DisplayName("첫 오디오 콘텐츠는 예약/미공개 콘텐츠를 제외하고 releaseDate 최신성 점수순으로 조회한다")
     fun shouldFindFirstAudioContentsOrderedByReleaseDateRecencyScoreExcludingScheduledContents() {
@@ -1585,7 +1653,7 @@ class DefaultHomeRecommendationQueryRepositoryTest @Autowired constructor(
         updateCreatedAt("AudioContent", old.id!!, now.minusDays(20))
         flushAndClear()
 
-        val contents = repository.findFirstAudioContents(now, limit = 10)
+        val contents = repository.findFirstAudioContents(now, limit = 10, locale = Lang.KO.code)
 
         assertEquals(listOf(fresh.id, old.id), contents.map { it.contentId })
     }
@@ -1602,8 +1670,20 @@ class DefaultHomeRecommendationQueryRepositoryTest @Autowired constructor(
         val oldest = saveAudioContent(oldestCreator, now.minusDays(21), isActive = true, isAdult = false)
         flushAndClear()
 
-        val page0 = repository.findFirstAudioContents(now, offset = 0L, limit = 2, includeAdultContents = false)
+        val page0 = repository.findFirstAudioContents(
-        val page1 = repository.findFirstAudioContents(now, offset = 1L, limit = 2, includeAdultContents = false)
+            now,
+            offset = 0L,
+            limit = 2,
+            includeAdultContents = false,
+            locale = Lang.KO.code
+        )
+        val page1 = repository.findFirstAudioContents(
+            now,
+            offset = 1L,
+            limit = 2,
+            includeAdultContents = false,
+            locale = Lang.KO.code
+        )
 
         assertEquals(listOf(newest.id, oldest.id), page0.map { it.contentId })
         assertEquals(listOf(oldest.id), page1.map { it.contentId })
@@ -1622,7 +1702,7 @@ class DefaultHomeRecommendationQueryRepositoryTest @Autowired constructor(
         updateCreatedAt("AudioContent", content.id!!, now.minusDays(1))
         flushAndClear()
 
-        val contents = repository.findFirstAudioContents(now, limit = 10)
+        val contents = repository.findFirstAudioContents(now, limit = 10, locale = Lang.KO.code)
 
         assertEquals(false, contents.single().isAdult)
         assertEquals(true, contents.single().isOriginalSeries)
@@ -1633,12 +1713,16 @@ class DefaultHomeRecommendationQueryRepositoryTest @Autowired constructor(
     fun shouldMapNumericNativeBooleanFromFirstAudioContentRows() {
         val mockEntityManager = Mockito.mock(EntityManager::class.java)
         val mockQuery = Mockito.mock(Query::class.java)
+        val mockContentTranslationRepository = Mockito.mock(ContentTranslationRepository::class.java)
         val repository = DefaultHomeRecommendationQueryRepository(
             JPAQueryFactory(mockEntityManager),
-            mockEntityManager
+            mockEntityManager,
+            mockContentTranslationRepository
         )
         Mockito.`when`(mockEntityManager.createNativeQuery(anyString())).thenReturn(mockQuery)
         Mockito.`when`(mockQuery.setParameter(anyString(), any())).thenReturn(mockQuery)
+        Mockito.`when`(mockContentTranslationRepository.findByContentIdInAndLocale(listOf(1L), Lang.KO.code))
+            .thenReturn(emptyList())
         Mockito.`when`(mockQuery.resultList).thenReturn(
             listOf(
                 arrayOf(
@@ -1661,7 +1745,8 @@ class DefaultHomeRecommendationQueryRepositoryTest @Autowired constructor(
             offset = 0L,
             limit = 1,
             memberId = null,
-            includeAdultContents = false
+            includeAdultContents = false,
+            locale = Lang.KO.code
         )
 
         assertEquals(true, contents.single().isOriginalSeries)
@@ -1682,7 +1767,7 @@ class DefaultHomeRecommendationQueryRepositoryTest @Autowired constructor(
         saveBlock(creatorBlockedViewer, viewer)
         flushAndClear()
 
-        val contents = repository.findFirstAudioContents(now, limit = 10, memberId = viewer.id)
+        val contents = repository.findFirstAudioContents(now, limit = 10, memberId = viewer.id, locale = Lang.KO.code)
 
         assertEquals(listOf(visibleContent.id), contents.map { it.contentId })
     }
@@ -1699,9 +1784,27 @@ class DefaultHomeRecommendationQueryRepositoryTest @Autowired constructor(
         val content3 = saveAudioContent(creator3, now.minusDays(5), isActive = true)
         flushAndClear()
 
-        val page0 = repository.findFirstAudioContents(now, offset = 0L, limit = 1, includeAdultContents = false)
+        val page0 = repository.findFirstAudioContents(
-        val page1 = repository.findFirstAudioContents(now, offset = 1L, limit = 1, includeAdultContents = false)
+            now,
-        val page2 = repository.findFirstAudioContents(now, offset = 2L, limit = 1, includeAdultContents = false)
+            offset = 0L,
+            limit = 1,
+            includeAdultContents = false,
+            locale = Lang.KO.code
+        )
+        val page1 = repository.findFirstAudioContents(
+            now,
+            offset = 1L,
+            limit = 1,
+            includeAdultContents = false,
+            locale = Lang.KO.code
+        )
+        val page2 = repository.findFirstAudioContents(
+            now,
+            offset = 2L,
+            limit = 1,
+            includeAdultContents = false,
+            locale = Lang.KO.code
+        )
 
         val pagedContentIds = (page0 + page1 + page2).map { it.contentId }
         assertEquals(setOf(content1.id, content2.id, content3.id), pagedContentIds.toSet())
@@ -2621,6 +2724,22 @@ class DefaultHomeRecommendationQueryRepositoryTest @Autowired constructor(
         return content
     }
 
+    private fun saveContentTranslation(content: AudioContent, locale: String, title: String) {
+        val translation = ContentTranslation(
+            contentId = content.id!!,
+            locale = locale,
+            renderedPayload = ContentTranslationPayload(title = title, detail = "", tags = "")
+        )
+        entityManager.persist(translation)
+        entityManager.flush()
+        val payload = "{\"title\":\"$title\",\"detail\":\"\",\"tags\":\"\"}"
+        entityManager.createNativeQuery(
+            "update content_translation set rendered_payload = '$payload' format json where id = :id"
+        )
+            .setParameter("id", translation.id)
+            .executeUpdate()
+    }
+
     private fun saveTheme(name: String, isActive: Boolean = true): AudioContentTheme {
         val theme = AudioContentTheme(
             theme = name,