쿠폰 리스트 가져오기 API 수정

AS-IS: 응답값에 전체 개수 없음
TO-BE: 응답값에 전체 개수 추가

src/main/kotlin/kr/co/vividnext/sodalive/can/coupon/CanCouponRepository.kt

@@ -8,11 +8,20 @@ import org.springframework.data.jpa.repository.JpaRepository
 interface CanCouponRepository : JpaRepository<CanCoupon, Long>, CanCouponQueryRepository
 
 interface CanCouponQueryRepository {
+    fun getCouponTotalCount(): Int
     fun getCouponList(offset: Long, limit: Long): List<CanCoupon>
     fun getCouponNumberList(couponId: Long, offset: Long, limit: Long): List<GetCouponNumberListResponse>
 }
 
 class CanCouponQueryRepositoryImpl(private val queryFactory: JPAQueryFactory) : CanCouponQueryRepository {
+    override fun getCouponTotalCount(): Int {
+        return queryFactory
+            .select(canCoupon.id)
+            .from(canCoupon)
+            .fetch()
+            .size
+    }
+
     override fun getCouponList(offset: Long, limit: Long): List<CanCoupon> {
         return queryFactory
             .selectFrom(canCoupon)

src/main/kotlin/kr/co/vividnext/sodalive/can/coupon/CanCouponService.kt

@@ -20,12 +20,14 @@ class CanCouponService(
         applicationEventPublisher.publishEvent(SqsEvent(type = SqsEventType.GENERATE_COUPON, message = message))
     }
 
-    fun getCouponList(offset: Long, limit: Long): List<GetCouponListResponse> {
+    fun getCouponList(offset: Long, limit: Long): GetCouponListResponse {
-        return repository.getCouponList(offset = offset, limit = limit)
+        val totalCount = repository.getCouponTotalCount()
+
+        val items = repository.getCouponList(offset = offset, limit = limit)
             .asSequence()
             .map {
                 val useCouponCount = couponNumberRepository.getUseCouponCount(id = it.id!!)
-                GetCouponListResponse(
+                GetCouponListItemResponse(
                     id = it.id!!,
                     couponName = it.couponName,
                     can = "${it.can}캔",
@@ -37,6 +39,8 @@ class CanCouponService(
                 )
             }
             .toList()
+
+        return GetCouponListResponse(totalCount, items)
     }
 
     fun getCouponNumberList(couponId: Long, offset: Long, limit: Long): List<GetCouponNumberListResponse> {

src/main/kotlin/kr/co/vividnext/sodalive/can/coupon/GetCouponListResponse.kt

@@ -1,6 +1,11 @@
 package kr.co.vividnext.sodalive.can.coupon
 
 data class GetCouponListResponse(
+    val totalCount: Int,
+    val items: List<GetCouponListItemResponse>
+)
+
+data class GetCouponListItemResponse(
     val id: Long,
     val couponName: String,
     val can: String,