feat(content-ranking): 오디오 랭킹 facade를 추가한다

src/main/kotlin/kr/co/vividnext/sodalive/v2/api/content/ranking/application/AudioRankingFacade.kt

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+package kr.co.vividnext.sodalive.v2.api.content.ranking.application
+
+import kr.co.vividnext.sodalive.member.Member
+import kr.co.vividnext.sodalive.v2.api.content.ranking.dto.AudioRankingResponse
+import kr.co.vividnext.sodalive.v2.content.ranking.application.AudioRankingQueryService
+import kr.co.vividnext.sodalive.v2.content.ranking.domain.AudioRankingType
+import org.springframework.stereotype.Component
+
+@Component
+class AudioRankingFacade(
+    private val queryService: AudioRankingQueryService
+) {
+    fun getRankings(type: AudioRankingType, member: Member?): AudioRankingResponse {
+        return AudioRankingResponse.from(queryService.getRankings(type, member))
+    }
+}

src/main/kotlin/kr/co/vividnext/sodalive/v2/content/ranking/application/AudioRankingQueryService.kt

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+package kr.co.vividnext.sodalive.v2.content.ranking.application
+
+import kr.co.vividnext.sodalive.member.Member
+import kr.co.vividnext.sodalive.v2.content.ranking.domain.AudioRanking
+import kr.co.vividnext.sodalive.v2.content.ranking.domain.AudioRankingType
+import org.springframework.stereotype.Service
+
+@Service
+class AudioRankingQueryService {
+    fun getRankings(type: AudioRankingType, member: Member?): AudioRanking {
+        return AudioRanking(
+            showRankChange = false,
+            type = type,
+            items = emptyList()
+        )
+    }
+}

src/test/kotlin/kr/co/vividnext/sodalive/v2/api/content/ranking/application/AudioRankingFacadeTest.kt

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+package kr.co.vividnext.sodalive.v2.api.content.ranking.application
+
+import kr.co.vividnext.sodalive.member.Member
+import kr.co.vividnext.sodalive.v2.content.ranking.application.AudioRankingQueryService
+import kr.co.vividnext.sodalive.v2.content.ranking.domain.AudioRanking
+import kr.co.vividnext.sodalive.v2.content.ranking.domain.AudioRankingItem
+import kr.co.vividnext.sodalive.v2.content.ranking.domain.AudioRankingType
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.DisplayName
+import org.junit.jupiter.api.Test
+import org.mockito.Mockito
+
+class AudioRankingFacadeTest {
+    private val queryService = Mockito.mock(AudioRankingQueryService::class.java)
+    private val facade = AudioRankingFacade(queryService)
+
+    @Test
+    @DisplayName("facade는 랭킹 타입과 회원을 쿼리 서비스에 그대로 전달하고 공개 응답으로 변환한다")
+    fun shouldDelegateTypeAndMemberAndConvertDomainRankingToResponse() {
+        val member = Mockito.mock(Member::class.java)
+        val ranking = AudioRanking(
+            showRankChange = true,
+            type = AudioRankingType.RISING,
+            items = listOf(
+                AudioRankingItem(
+                    contentId = 1L,
+                    title = "audio",
+                    creatorNickname = "creator",
+                    rank = 1,
+                    rankChange = 2,
+                    isNew = false,
+                    coverImageUrl = "https://cdn.test/audio.png"
+                )
+            )
+        )
+        Mockito.doReturn(ranking).`when`(queryService).getRankings(AudioRankingType.RISING, member)
+
+        val response = facade.getRankings(AudioRankingType.RISING, member)
+
+        Mockito.verify(queryService).getRankings(AudioRankingType.RISING, member)
+        assertEquals(true, response.showRankChange)
+        assertEquals(AudioRankingType.RISING, response.type)
+        assertEquals(1, response.items.size)
+        assertEquals(1L, response.items[0].contentId)
+        assertEquals("audio", response.items[0].title)
+        assertEquals("creator", response.items[0].creatorNickname)
+        assertEquals(1, response.items[0].rank)
+        assertEquals(2, response.items[0].rankChange)
+        assertEquals(false, response.items[0].isNew)
+        assertEquals("https://cdn.test/audio.png", response.items[0].coverImageUrl)
+    }
+}