feat(creator-channel): 커뮤니티 탭 응답 조립을 추가한다

src/main/kotlin/kr/co/vividnext/sodalive/extensions/LocalDateTimeExtensions.kt

@@ -3,6 +3,7 @@ package kr.co.vividnext.sodalive.extensions
 import java.time.Duration
 import java.time.LocalDateTime
 import java.time.ZoneId
+import java.time.ZoneOffset
 
 private val DEFAULT_KST_ZONE_ID: ZoneId = ZoneId.of("Asia/Seoul")
 private val UTC_ZONE_ID: ZoneId = ZoneId.of("UTC")
@@ -26,3 +27,7 @@ fun LocalDateTime.convertToUtc(timeZone: ZoneId = DEFAULT_KST_ZONE_ID): LocalDat
         .withZoneSameInstant(UTC_ZONE_ID)
         .toLocalDateTime()
 }
+
+fun LocalDateTime.toUtcIso(): String {
+    return atOffset(ZoneOffset.UTC).toInstant().toString()
+}

src/main/kotlin/kr/co/vividnext/sodalive/v2/api/creator/channel/community/application/CreatorChannelCommunityFacade.kt

@@ -0,0 +1,32 @@
+package kr.co.vividnext.sodalive.v2.api.creator.channel.community.application
+
+import kr.co.vividnext.sodalive.member.Member
+import kr.co.vividnext.sodalive.v2.api.creator.channel.community.dto.CreatorChannelCommunityTabResponse
+import kr.co.vividnext.sodalive.v2.creator.channel.community.application.CreatorChannelCommunityQueryService
+import org.springframework.stereotype.Service
+import org.springframework.transaction.annotation.Transactional
+import java.time.LocalDateTime
+
+@Service
+@Transactional(readOnly = true)
+class CreatorChannelCommunityFacade(
+    private val creatorChannelCommunityQueryService: CreatorChannelCommunityQueryService
+) {
+    fun getCommunityTab(
+        creatorId: Long,
+        viewer: Member,
+        page: Int?,
+        size: Int?,
+        now: LocalDateTime = LocalDateTime.now()
+    ): CreatorChannelCommunityTabResponse {
+        return CreatorChannelCommunityTabResponse.from(
+            creatorChannelCommunityQueryService.getCommunityTab(
+                creatorId = creatorId,
+                viewer = viewer,
+                page = page,
+                size = size,
+                now = now
+            )
+        )
+    }
+}

src/main/kotlin/kr/co/vividnext/sodalive/v2/api/creator/channel/community/dto/CreatorChannelCommunityTabResponse.kt

@@ -0,0 +1,67 @@
+package kr.co.vividnext.sodalive.v2.api.creator.channel.community.dto
+
+import com.fasterxml.jackson.annotation.JsonProperty
+import kr.co.vividnext.sodalive.extensions.toUtcIso
+import kr.co.vividnext.sodalive.v2.creator.channel.community.domain.CreatorChannelCommunityPost
+import kr.co.vividnext.sodalive.v2.creator.channel.community.domain.CreatorChannelCommunityTab
+
+data class CreatorChannelCommunityTabResponse(
+    val communityPostCount: Int,
+    val communityPosts: List<CreatorChannelCommunityPostResponse>,
+    val page: Int,
+    val size: Int,
+    @JsonProperty("hasNext")
+    val hasNext: Boolean
+) {
+    companion object {
+        fun from(tab: CreatorChannelCommunityTab): CreatorChannelCommunityTabResponse {
+            return CreatorChannelCommunityTabResponse(
+                communityPostCount = tab.communityPostCount,
+                communityPosts = tab.communityPosts.map(CreatorChannelCommunityPostResponse::from),
+                page = tab.page.page,
+                size = tab.page.size,
+                hasNext = tab.hasNext
+            )
+        }
+    }
+}
+
+data class CreatorChannelCommunityPostResponse(
+    val postId: Long,
+    val creatorId: Long,
+    val creatorNickname: String,
+    val creatorProfileUrl: String,
+    val createdAtUtc: String,
+    val content: String,
+    val imageUrl: String?,
+    val audioUrl: String?,
+    val price: Int,
+    @JsonProperty("isCommentAvailable")
+    val isCommentAvailable: Boolean,
+    val existOrdered: Boolean,
+    val likeCount: Int,
+    val commentCount: Int,
+    @JsonProperty("isPinned")
+    val isPinned: Boolean
+) {
+    companion object {
+        fun from(post: CreatorChannelCommunityPost): CreatorChannelCommunityPostResponse {
+            return CreatorChannelCommunityPostResponse(
+                postId = post.postId,
+                creatorId = post.creatorId,
+                creatorNickname = post.creatorNickname,
+                creatorProfileUrl = post.creatorProfileUrl,
+                createdAtUtc = post.createdAt.toUtcIso(),
+                content = post.content,
+                imageUrl = post.imageUrl,
+                audioUrl = post.audioUrl,
+                price = post.price,
+                isCommentAvailable = post.isCommentAvailable,
+                existOrdered = post.existOrdered,
+                likeCount = post.likeCount,
+                commentCount = post.commentCount,
+                isPinned = post.isPinned
+            )
+        }
+    }
+}

src/test/kotlin/kr/co/vividnext/sodalive/v2/api/creator/channel/community/application/CreatorChannelCommunityFacadeTest.kt

@@ -0,0 +1,138 @@
+package kr.co.vividnext.sodalive.v2.api.creator.channel.community.application
+
+import com.fasterxml.jackson.databind.ObjectMapper
+import com.fasterxml.jackson.module.kotlin.KotlinModule
+import kr.co.vividnext.sodalive.member.Member
+import kr.co.vividnext.sodalive.member.MemberRole
+import kr.co.vividnext.sodalive.v2.api.creator.channel.community.dto.CreatorChannelCommunityTabResponse
+import kr.co.vividnext.sodalive.v2.creator.channel.community.application.CreatorChannelCommunityQueryService
+import kr.co.vividnext.sodalive.v2.creator.channel.community.domain.CreatorChannelCommunityPost
+import kr.co.vividnext.sodalive.v2.creator.channel.community.domain.CreatorChannelCommunityTab
+import kr.co.vividnext.sodalive.v2.creator.channel.live.domain.CreatorChannelPage
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Assertions.assertFalse
+import org.junit.jupiter.api.Assertions.assertNull
+import org.junit.jupiter.api.Assertions.assertTrue
+import org.junit.jupiter.api.DisplayName
+import org.junit.jupiter.api.Test
+import org.mockito.Mockito
+import java.time.LocalDateTime
+
+class CreatorChannelCommunityFacadeTest {
+    @Test
+    @DisplayName("커뮤니티 탭 응답 DTO는 domain tab 값을 공개 응답 필드로 그대로 매핑한다")
+    fun shouldMapCommunityTabDomainToPublicResponse() {
+        val response = CreatorChannelCommunityTabResponse.from(createTab())
+
+        assertEquals(2, response.communityPostCount)
+        assertEquals(101L, response.communityPosts.first().postId)
+        assertEquals(1L, response.communityPosts.first().creatorId)
+        assertEquals("creator", response.communityPosts.first().creatorNickname)
+        assertEquals("https://cdn.test/profile.png", response.communityPosts.first().creatorProfileUrl)
+        assertEquals("2026-06-21T03:30:00Z", response.communityPosts.first().createdAtUtc)
+        assertEquals("paid content", response.communityPosts.first().content)
+        assertEquals("https://cdn.test/image.png", response.communityPosts.first().imageUrl)
+        assertEquals("https://signed.test/audio", response.communityPosts.first().audioUrl)
+        assertEquals(100, response.communityPosts.first().price)
+        assertTrue(response.communityPosts.first().isCommentAvailable)
+        assertTrue(response.communityPosts.first().existOrdered)
+        assertEquals(7, response.communityPosts.first().likeCount)
+        assertEquals(3, response.communityPosts.first().commentCount)
+        assertTrue(response.communityPosts.first().isPinned)
+        assertNull(response.communityPosts.last().imageUrl)
+        assertNull(response.communityPosts.last().audioUrl)
+        assertEquals(1, response.page)
+        assertEquals(20, response.size)
+        assertTrue(response.hasNext)
+
+        val mapper = ObjectMapper().registerModule(KotlinModule.Builder().build())
+        val json = mapper.readTree(mapper.writeValueAsString(response))
+        assertTrue(json["hasNext"].asBoolean())
+        assertTrue(json["communityPosts"][0]["isCommentAvailable"].asBoolean())
+        assertTrue(json["communityPosts"][0]["isPinned"].asBoolean())
+    }
+
+    @Test
+    @DisplayName("커뮤니티 탭 facade는 query service 결과를 공개 응답 DTO로 변환한다")
+    fun shouldMapCommunityTabQueryResultToPublicResponse() {
+        val service = Mockito.mock(CreatorChannelCommunityQueryService::class.java)
+        val facade = CreatorChannelCommunityFacade(service)
+        val viewer = createMember(id = 10L)
+        val now = LocalDateTime.of(2026, 6, 21, 12, 0)
+        Mockito.doReturn(createTab()).`when`(service).getCommunityTab(
+            creatorId = 1L,
+            viewer = viewer,
+            page = -1,
+            size = 100,
+            now = now
+        )
+
+        val response = facade.getCommunityTab(
+            creatorId = 1L,
+            viewer = viewer,
+            page = -1,
+            size = 100,
+            now = now
+        )
+
+        assertEquals(2, response.communityPostCount)
+        assertEquals(101L, response.communityPosts.first().postId)
+        assertEquals("https://cdn.test/profile.png", response.communityPosts.first().creatorProfileUrl)
+        assertTrue(response.communityPosts.first().existOrdered)
+        assertFalse(response.communityPosts.last().isCommentAvailable)
+        assertEquals(1, response.page)
+        assertEquals(20, response.size)
+        assertTrue(response.hasNext)
+    }
+
+    private fun createMember(id: Long): Member {
+        return Member(
+            email = "viewer$id@test.com",
+            password = "password",
+            nickname = "viewer$id",
+            role = MemberRole.USER
+        ).apply { this.id = id }
+    }
+
+    private fun createTab(): CreatorChannelCommunityTab {
+        return CreatorChannelCommunityTab(
+            communityPostCount = 2,
+            communityPosts = listOf(
+                CreatorChannelCommunityPost(
+                    postId = 101L,
+                    creatorId = 1L,
+                    creatorNickname = "creator",
+                    creatorProfileUrl = "https://cdn.test/profile.png",
+                    imageUrl = "https://cdn.test/image.png",
+                    audioUrl = "https://signed.test/audio",
+                    content = "paid content",
+                    price = 100,
+                    createdAt = LocalDateTime.of(2026, 6, 21, 3, 30),
+                    existOrdered = true,
+                    isCommentAvailable = true,
+                    likeCount = 7,
+                    commentCount = 3,
+                    isPinned = true
+                ),
+                CreatorChannelCommunityPost(
+                    postId = 102L,
+                    creatorId = 1L,
+                    creatorNickname = "creator",
+                    creatorProfileUrl = "https://cdn.test/profile.png",
+                    imageUrl = null,
+                    audioUrl = null,
+                    content = "masked...",
+                    price = 50,
+                    createdAt = LocalDateTime.of(2026, 6, 21, 3, 0),
+                    existOrdered = false,
+                    isCommentAvailable = false,
+                    likeCount = 1,
+                    commentCount = 0,
+                    isPinned = false
+                )
+            ),
+            page = CreatorChannelPage(page = 1, size = 20),
+            hasNext = true
+        )
+    }
+}