refactor: 새로운 결제, 결제 상세, 취소된 결제 정보를 조회하는 PaymentFinderV2 추가

src/main/kotlin/roomescape/payment/exception/PaymentErrorCode.kt

@@ -9,11 +9,12 @@ enum class PaymentErrorCode(
     override val message: String
 ) : ErrorCode {
     PAYMENT_NOT_FOUND(HttpStatus.NOT_FOUND, "P001", "결제 정보를 찾을 수 없어요."),
-    CANCELED_PAYMENT_NOT_FOUND(HttpStatus.NOT_FOUND, "P002", "취소된 결제 정보를 찾을 수 없어요."),
+    PAYMENT_DETAIL_NOT_FOUND(HttpStatus.NOT_FOUND, "P002", "결제 상세 정보를 찾을 수 없어요."),
-    PAYMENT_CLIENT_ERROR(HttpStatus.BAD_REQUEST, "P003", "결제에 실패했어요. 결제 수단을 확인한 후 다시 시도해주세요."),
+    CANCELED_PAYMENT_NOT_FOUND(HttpStatus.NOT_FOUND, "P003", "취소된 결제 정보를 찾을 수 없어요."),
-    ORGANIZATION_CODE_NOT_FOUND(HttpStatus.NOT_FOUND, "P004", "은행 / 카드사 정보를 찾을 수 없어요."),
+    PAYMENT_CLIENT_ERROR(HttpStatus.BAD_REQUEST, "P004", "결제에 실패했어요. 결제 수단을 확인한 후 다시 시도해주세요."),
-    TYPE_NOT_FOUND(HttpStatus.NOT_FOUND, "P005", "타입 정보를 찾을 수 없어요."),
+    ORGANIZATION_CODE_NOT_FOUND(HttpStatus.NOT_FOUND, "P005", "은행 / 카드사 정보를 찾을 수 없어요."),
-    NOT_SUPPORTED_PAYMENT_TYPE(HttpStatus.BAD_REQUEST, "P006", "지원하지 않는 결제 수단이에요."),
+    TYPE_NOT_FOUND(HttpStatus.NOT_FOUND, "P006", "타입 정보를 찾을 수 없어요."),
+    NOT_SUPPORTED_PAYMENT_TYPE(HttpStatus.BAD_REQUEST, "P007", "지원하지 않는 결제 수단이에요."),
 
     PAYMENT_UNEXPECTED_ERROR(HttpStatus.INTERNAL_SERVER_ERROR, "P998", "결제 과정중 예상치 못한 예외가 발생했어요."),
     PAYMENT_PROVIDER_ERROR(HttpStatus.INTERNAL_SERVER_ERROR, "P999", "시스템에 일시적인 오류가 발생했어요. 잠시 후 다시 시도해주세요."),

src/main/kotlin/roomescape/payment/implement/PaymentFinderV2.kt

@@ -0,0 +1,53 @@
+package roomescape.payment.implement
+
+import io.github.oshai.kotlinlogging.KLogger
+import io.github.oshai.kotlinlogging.KotlinLogging
+import org.springframework.stereotype.Component
+import roomescape.payment.exception.PaymentErrorCode
+import roomescape.payment.exception.PaymentException
+import roomescape.payment.infrastructure.persistence.v2.CanceledPaymentEntityV2
+import roomescape.payment.infrastructure.persistence.v2.CanceledPaymentRepositoryV2
+import roomescape.payment.infrastructure.persistence.v2.PaymentDetailEntity
+import roomescape.payment.infrastructure.persistence.v2.PaymentDetailRepository
+import roomescape.payment.infrastructure.persistence.v2.PaymentEntityV2
+import roomescape.payment.infrastructure.persistence.v2.PaymentRepositoryV2
+
+private val log: KLogger = KotlinLogging.logger {}
+
+@Component
+class PaymentFinderV2(
+    private val paymentRepository: PaymentRepositoryV2,
+    private val paymentDetailRepository: PaymentDetailRepository,
+    private val canceledPaymentRepository: CanceledPaymentRepositoryV2
+) {
+
+    fun findPaymentByReservationId(reservationId: Long): PaymentEntityV2 {
+        log.debug { "[PaymentFinderV2.findByReservationId] 시작: reservationId=$reservationId" }
+
+        return paymentRepository.findByReservationId(reservationId)?.also {
+            log.debug { "[PaymentFinderV2.findByReservationId] 완료: reservationId=$reservationId, paymentId=${it.id}" }
+        } ?: run {
+            log.warn { "[PaymentFinderV2.findByReservationId] 실패: reservationId=$reservationId" }
+            throw PaymentException(PaymentErrorCode.PAYMENT_NOT_FOUND)
+        }
+    }
+
+    fun findPaymentDetailByPaymentId(paymentId: Long): PaymentDetailEntity {
+        log.debug { "[PaymentFinderV2.findPaymentDetailByPaymentId] 시작: paymentId=$paymentId" }
+
+        return paymentDetailRepository.findByPaymentId(paymentId)?.also {
+            log.debug { "[PaymentFinderV2.findPaymentDetailByPaymentId] 완료: paymentId=$paymentId, detailId=${it.id}" }
+        } ?: run {
+            log.warn { "[PaymentFinderV2.findPaymentDetailByPaymentId] 실패: paymentId=$paymentId" }
+            throw PaymentException(PaymentErrorCode.PAYMENT_DETAIL_NOT_FOUND)
+        }
+    }
+
+    fun findCanceledPaymentByPaymentIdOrNull(paymentId: Long): CanceledPaymentEntityV2? {
+        log.debug { "[PaymentFinderV2.findCanceledPaymentByKey] 시작: paymentId=$paymentId" }
+
+        return canceledPaymentRepository.findByPaymentId(paymentId)?.also {
+            log.debug { "[PaymentFinderV2.findCanceledPaymentByKey] 완료: paymentId=$paymentId, canceledPaymentId=${it.id}" }
+        }
+    }
+}

src/main/kotlin/roomescape/payment/infrastructure/persistence/v2/CanceledPaymentRepositoryV2.kt

@@ -2,4 +2,6 @@ package roomescape.payment.infrastructure.persistence.v2
 
 import org.springframework.data.jpa.repository.JpaRepository
 
-interface CanceledPaymentRepositoryV2 : JpaRepository<CanceledPaymentEntityV2, Long>
+interface CanceledPaymentRepositoryV2 : JpaRepository<CanceledPaymentEntityV2, Long> {
+    fun findByPaymentId(paymentId: Long): CanceledPaymentEntityV2?
+}

src/main/kotlin/roomescape/payment/infrastructure/persistence/v2/PaymentDetailRepository.kt

@@ -2,4 +2,6 @@ package roomescape.payment.infrastructure.persistence.v2
 
 import org.springframework.data.jpa.repository.JpaRepository
 
-interface PaymentDetailRepository: JpaRepository<PaymentDetailEntity, Long>
+interface PaymentDetailRepository: JpaRepository<PaymentDetailEntity, Long> {
+    fun findByPaymentId(paymentId: Long) : PaymentDetailEntity?
+}