서비스 공지사항 API 추가

src/main/kotlin/kr/co/vividnext/sodalive/notice/ServiceNoticeService.kt

@@ -0,0 +1,66 @@
+package kr.co.vividnext.sodalive.notice
+
+import kr.co.vividnext.sodalive.common.SodaException
+import org.springframework.data.domain.Pageable
+import org.springframework.data.repository.findByIdOrNull
+import org.springframework.stereotype.Service
+import org.springframework.transaction.annotation.Transactional
+import java.time.ZoneId
+import java.time.format.DateTimeFormatter
+
+@Service
+@Transactional(readOnly = true)
+class ServiceNoticeService(private val repository: ServiceServiceNoticeRepository) {
+    @Transactional
+    fun save(request: CreateNoticeRequest): Long {
+        if (request.title.isBlank()) throw SodaException("제목을 입력하세요.")
+        if (request.content.isBlank()) throw SodaException("내용을 입력하세요.")
+
+        val notice = request.toEntity()
+        return repository.save(notice).id!!
+    }
+
+    @Transactional
+    fun update(request: UpdateNoticeRequest) {
+        if (request.id <= 0) throw SodaException("잘못된 요청입니다.")
+        if (request.title.isNullOrBlank() && request.content.isNullOrBlank()) {
+            throw SodaException("수정할 내용을 입력하세요.")
+        }
+
+        val notice = repository.findByIdOrNull(request.id)
+            ?: throw SodaException("잘못된 요청입니다.")
+
+        if (!request.title.isNullOrBlank()) notice.title = request.title
+        if (!request.content.isNullOrBlank()) notice.content = request.content
+    }
+
+    @Transactional
+    fun delete(id: Long) {
+        if (id <= 0) throw SodaException("잘못된 요청입니다.")
+        val notice = repository.findByIdOrNull(id)
+            ?: throw SodaException("잘못된 요청입니다.")
+
+        notice.isActive = false
+    }
+
+    fun getNoticeList(pageable: Pageable, timezone: String): GetNoticeResponse {
+        val totalCount = repository.getNoticeTotalCount()
+        val noticeList = repository.getNoticeList(pageable)
+            .asSequence()
+            .map {
+                val createdAt = it.createdAt!!
+                    .atZone(ZoneId.of("UTC"))
+                    .withZoneSameInstant(ZoneId.of(timezone))
+
+                NoticeItem(
+                    it.id!!,
+                    it.title,
+                    it.content,
+                    createdAt.format(DateTimeFormatter.ofPattern("yyyy-MM-dd"))
+                )
+            }
+            .toList()
+
+        return GetNoticeResponse(totalCount, noticeList)
+    }
+}