feat: 포인트 사용 로직 구현 (만료일 순 + 10포인트 단위 차감)

src/main/kotlin/kr/co/vividnext/sodalive/content/order/OrderService.kt

@@ -10,6 +10,7 @@ import kr.co.vividnext.sodalive.content.comment.AudioContentCommentRepository
 import kr.co.vividnext.sodalive.content.like.AudioContentLikeRepository
 import kr.co.vividnext.sodalive.content.main.GetAudioContentMainItem
 import kr.co.vividnext.sodalive.member.Member
+import kr.co.vividnext.sodalive.point.PointUsageService
 import org.springframework.beans.factory.annotation.Value
 import org.springframework.stereotype.Service
 import org.springframework.transaction.annotation.Transactional
@@ -19,6 +20,7 @@ import java.time.LocalDateTime
 @Transactional(readOnly = true)
 class OrderService(
     private val repository: OrderRepository,
+    private val pointUsageService: PointUsageService,
     private val canPaymentService: CanPaymentService,
     private val audioContentRepository: AudioContentRepository,
     private val audioContentCommentQueryRepository: AudioContentCommentRepository,
@@ -41,9 +43,16 @@ class OrderService(
             orderContent(orderType, content, member)
         }
 
+        val usedPoint = if (order.type == OrderType.RENTAL) {
+            pointUsageService.usePoint(member.id!!, order.can)
+        } else {
+            0
+        }
+        order.point = usedPoint
+
         canPaymentService.spendCan(
             memberId = member.id!!,
-            needCan = order.can,
+            needCan = order.can - (usedPoint / 10),
             canUsage = CanUsage.ORDER_CONTENT,
             order = order,
             container = container