src/main/kotlin/kr/co/vividnext/sodalive/content/AudioContentController.kt

@@ -196,4 +196,26 @@ class AudioContentController(private val service: AudioContentService) {
     fun releaseContent() = run {
         ApiResponse.ok(service.releaseContent())
     }
+
+    @PostMapping("/pin-to-the-top/{id}")
+    @PreAuthorize("hasRole('CREATOR')")
+    fun pinToTheTop(
+        @PathVariable id: Long,
+        @AuthenticationPrincipal(expression = "#this == 'anonymousUser' ? null : member") member: Member?
+    ) = run {
+        if (member == null) throw SodaException("로그인 정보를 확인해주세요.")
+
+        ApiResponse.ok(service.pinToTheTop(contentId = id, member = member))
+    }
+
+    @PutMapping("/unpin-at-the-top/{id}")
+    @PreAuthorize("hasRole('CREATOR')")
+    fun unpinAtTheTop(
+        @PathVariable id: Long,
+        @AuthenticationPrincipal(expression = "#this == 'anonymousUser' ? null : member") member: Member?
+    ) = run {
+        if (member == null) throw SodaException("로그인 정보를 확인해주세요.")
+
+        ApiResponse.ok(service.unpinAtTheTop(contentId = id, member = member))
+    }
 }

src/main/kotlin/kr/co/vividnext/sodalive/content/AudioContentService.kt

@@ -16,6 +16,8 @@ import kr.co.vividnext.sodalive.content.like.PutAudioContentLikeResponse
 import kr.co.vividnext.sodalive.content.main.GetAudioContentRanking
 import kr.co.vividnext.sodalive.content.order.OrderRepository
 import kr.co.vividnext.sodalive.content.order.OrderType
+import kr.co.vividnext.sodalive.content.pin.PinContent
+import kr.co.vividnext.sodalive.content.pin.PinContentRepository
 import kr.co.vividnext.sodalive.content.theme.AudioContentThemeQueryRepository
 import kr.co.vividnext.sodalive.explorer.ExplorerQueryRepository
 import kr.co.vividnext.sodalive.extensions.convertLocalDateTime
@@ -49,6 +51,7 @@ class AudioContentService(
     private val playbackTrackingRepository: PlaybackTrackingRepository,
     private val commentRepository: AudioContentCommentRepository,
     private val audioContentLikeRepository: AudioContentLikeRepository,
+    private val pinContentRepository: PinContentRepository,
 
     private val s3Uploader: S3Uploader,
     private val objectMapper: ObjectMapper,
@@ -696,4 +699,31 @@ class AudioContentService(
     fun getContentRankingSortTypeList(): List<String> {
         return listOf("매출", "댓글", "좋아요")
     }
+
+    @Transactional
+    fun pinToTheTop(contentId: Long, member: Member) {
+        val audioContent = repository.findByIdAndCreatorId(contentId = contentId, creatorId = member.id!!)
+            ?: throw SodaException("잘못된 콘텐츠 입니다.\n다시 시도해 주세요.")
+
+        val pinContentList = pinContentRepository.getPinContentList(memberId = member.id!!)
+        val pinContent = if (pinContentList.size >= 3) {
+            pinContentList[0]
+        } else {
+            PinContent()
+        }
+
+        pinContent.member = member
+        pinContent.content = audioContent
+        pinContentRepository.save(pinContent)
+    }
+
+    @Transactional
+    fun unpinAtTheTop(contentId: Long, member: Member) {
+        val pinContent = pinContentRepository.findByContentIdAndMemberId(
+            contentId = contentId,
+            memberId = member.id!!
+        ) ?: throw SodaException("잘못된 콘텐츠 입니다.\n다시 시도해 주세요.")
+
+        pinContent.isActive = false
+    }
 }

src/main/kotlin/kr/co/vividnext/sodalive/content/pin/PinContent.kt

@@ -0,0 +1,20 @@
+package kr.co.vividnext.sodalive.content.pin
+
+import kr.co.vividnext.sodalive.common.BaseEntity
+import kr.co.vividnext.sodalive.content.AudioContent
+import kr.co.vividnext.sodalive.member.Member
+import javax.persistence.Entity
+import javax.persistence.FetchType
+import javax.persistence.JoinColumn
+import javax.persistence.ManyToOne
+
+@Entity
+data class PinContent(var isActive: Boolean = true) : BaseEntity() {
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "member_id", nullable = false)
+    var member: Member? = null
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "content_id", nullable = false)
+    var content: AudioContent? = null
+}

src/main/kotlin/kr/co/vividnext/sodalive/content/pin/PinContentRepository.kt

@@ -0,0 +1,33 @@
+package kr.co.vividnext.sodalive.content.pin
+
+import com.querydsl.jpa.impl.JPAQueryFactory
+import kr.co.vividnext.sodalive.content.pin.QPinContent.pinContent
+import org.springframework.data.jpa.repository.JpaRepository
+
+interface PinContentRepository : JpaRepository<PinContent, Long>, PinContentQueryRepository
+
+interface PinContentQueryRepository {
+    fun getPinContentList(memberId: Long): List<PinContent>
+
+    fun findByContentIdAndMemberId(contentId: Long, memberId: Long): PinContent?
+}
+
+class PinContentQueryRepositoryImpl(private val queryFactory: JPAQueryFactory) : PinContentQueryRepository {
+    override fun getPinContentList(memberId: Long): List<PinContent> {
+        return queryFactory
+            .selectFrom(pinContent)
+            .where(pinContent.member.id.eq(memberId))
+            .orderBy(pinContent.updatedAt.asc())
+            .fetch()
+    }
+
+    override fun findByContentIdAndMemberId(contentId: Long, memberId: Long): PinContent? {
+        return queryFactory
+            .selectFrom(pinContent)
+            .where(
+                pinContent.content.id.eq(contentId)
+                    .and(pinContent.member.id.eq(memberId))
+            )
+            .fetchFirst()
+    }
+}