feat(admin-charge): 관리자 캔 환불 API로 미사용 7일 이내 환불을 처리한다

2026-03-05 17:05:05 +09:00
parent 12f3a76c57
commit 21d26b76f4
6 changed files with 430 additions and 0 deletions
--- a/src/main/kotlin/kr/co/vividnext/sodalive/admin/charge/AdminChargeRefundController.kt
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/admin/charge/AdminChargeRefundController.kt
@@ -0,0 +1,16 @@
+package kr.co.vividnext.sodalive.admin.charge
+
+import kr.co.vividnext.sodalive.common.ApiResponse
+import org.springframework.security.access.prepost.PreAuthorize
+import org.springframework.web.bind.annotation.PostMapping
+import org.springframework.web.bind.annotation.RequestBody
+import org.springframework.web.bind.annotation.RequestMapping
+import org.springframework.web.bind.annotation.RestController
+
+@RestController
+@PreAuthorize("hasRole('ADMIN')")
+@RequestMapping("/admin/charge")
+class AdminChargeRefundController(private val service: AdminChargeRefundService) {
+    @PostMapping("/refund")
+    fun refund(@RequestBody request: AdminChargeRefundRequest) = ApiResponse.ok(service.refund(request))
+}
--- a/src/main/kotlin/kr/co/vividnext/sodalive/admin/charge/AdminChargeRefundRequest.kt
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/admin/charge/AdminChargeRefundRequest.kt
@@ -0,0 +1,5 @@
+package kr.co.vividnext.sodalive.admin.charge
+
+data class AdminChargeRefundRequest(
+    val chargeId: Long
+)
--- a/src/main/kotlin/kr/co/vividnext/sodalive/admin/charge/AdminChargeRefundService.kt
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/admin/charge/AdminChargeRefundService.kt
@@ -0,0 +1,106 @@
+package kr.co.vividnext.sodalive.admin.charge
+
+import kr.co.vividnext.sodalive.can.charge.Charge
+import kr.co.vividnext.sodalive.can.charge.ChargeRepository
+import kr.co.vividnext.sodalive.can.charge.ChargeStatus
+import kr.co.vividnext.sodalive.can.payment.PaymentGateway
+import kr.co.vividnext.sodalive.can.payment.PaymentStatus
+import kr.co.vividnext.sodalive.common.SodaException
+import kr.co.vividnext.sodalive.i18n.LangContext
+import kr.co.vividnext.sodalive.i18n.SodaMessageSource
+import kr.co.vividnext.sodalive.member.Member
+import org.springframework.data.repository.findByIdOrNull
+import org.springframework.stereotype.Service
+import org.springframework.transaction.annotation.Transactional
+import java.time.LocalDateTime
+import java.time.temporal.ChronoUnit
+
+@Service
+class AdminChargeRefundService(
+    private val chargeRepository: ChargeRepository,
+    private val messageSource: SodaMessageSource,
+    private val langContext: LangContext
+) {
+    @Transactional
+    fun refund(request: AdminChargeRefundRequest) {
+        val charge = chargeRepository.findByIdOrNull(request.chargeId)
+            ?: throw SodaException(messageKey = "common.error.invalid_request")
+        val payment = charge.payment
+            ?: throw SodaException(messageKey = "common.error.invalid_request")
+        val member = charge.member
+            ?: throw SodaException(messageKey = "common.error.invalid_request")
+
+        if (charge.status != ChargeStatus.CHARGE || payment.status != PaymentStatus.COMPLETE) {
+            throw SodaException(messageKey = "can.payment.refund.invalid_request")
+        }
+
+        validateRefundDate(charge)
+        validateUnusedCan(charge)
+
+        deductMemberCan(member, payment.paymentGateway, charge.chargeCan, charge.rewardCan)
+
+        charge.chargeCan = 0
+        charge.rewardCan = 0
+        charge.status = ChargeStatus.CANCEL
+        payment.status = PaymentStatus.RETURN
+    }
+
+    private fun validateUnusedCan(charge: Charge) {
+        val title = charge.title ?: throw SodaException(messageKey = "common.error.invalid_request")
+        val (originalChargeCan, originalRewardCan) = extractCanFromTitle(title)
+        if (charge.chargeCan != originalChargeCan || charge.rewardCan != originalRewardCan) {
+            throw SodaException(messageKey = "can.payment.refund.used_not_allowed")
+        }
+    }
+
+    private fun extractCanFromTitle(title: String): Pair<Int, Int> {
+        val parsedNumbers = TITLE_CAN_REGEX
+            .findAll(title)
+            .map { it.value.replace(",", "").toIntOrNull() }
+            .toList()
+
+        if (parsedNumbers.isEmpty() || parsedNumbers.first() == null) {
+            throw SodaException(messageKey = "common.error.invalid_request")
+        }
+
+        val chargeCanFromTitle = parsedNumbers.first()!!
+        val rewardCanFromTitle = parsedNumbers.getOrNull(1) ?: 0
+        return Pair(chargeCanFromTitle, rewardCanFromTitle)
+    }
+
+    private fun validateRefundDate(charge: Charge) {
+        val chargedAt = charge.createdAt
+            ?: throw SodaException(messageKey = "common.error.invalid_request")
+        val now = LocalDateTime.now()
+
+        if (now.isAfter(chargedAt.plusDays(7))) {
+            val passedDays = ChronoUnit.DAYS.between(chargedAt.toLocalDate(), now.toLocalDate())
+            val messageTemplate = messageSource.getMessage("can.payment.refund.days_exceeded", langContext.lang)
+                ?: "충천 후 %s일이 지나서 환불할 수 없습니다."
+            throw SodaException(message = String.format(messageTemplate, passedDays))
+        }
+    }
+
+    private fun deductMemberCan(member: Member, paymentGateway: PaymentGateway, chargeCan: Int, rewardCan: Int) {
+        when (paymentGateway) {
+            PaymentGateway.GOOGLE_IAP -> {
+                member.googleChargeCan -= chargeCan
+                member.googleRewardCan -= rewardCan
+            }
+
+            PaymentGateway.APPLE_IAP -> {
+                member.appleChargeCan -= chargeCan
+                member.appleRewardCan -= rewardCan
+            }
+
+            else -> {
+                member.pgChargeCan -= chargeCan
+                member.pgRewardCan -= rewardCan
+            }
+        }
+    }
+
+    companion object {
+        private val TITLE_CAN_REGEX = Regex("\\d[\\d,]*")
+    }
+}
--- a/src/main/kotlin/kr/co/vividnext/sodalive/i18n/SodaMessageSource.kt
+++ b/src/main/kotlin/kr/co/vividnext/sodalive/i18n/SodaMessageSource.kt
@@ -614,6 +614,16 @@ class SodaMessageSource {
            Lang.KO to "%s 캔이 부족합니다. 충전 후 이용해 주세요.",
            Lang.EN to "You are short of %s cans. Please recharge and try again.",
            Lang.JA to "%sCANが不足しています。チャージしてからご利用ください。"
+        ),
+        "can.payment.refund.used_not_allowed" to mapOf(
+            Lang.KO to "사용한 캔은 환불할 수 없습니다.",
+            Lang.EN to "Used cans cannot be refunded.",
+            Lang.JA to "使用したCANは返金できません。"
+        ),
+        "can.payment.refund.days_exceeded" to mapOf(
+            Lang.KO to "충천 후 %s일이 지나서 환불할 수 없습니다.",
+            Lang.EN to "Refund is not available because %s days have passed since charging.",
+            Lang.JA to "チャージ後%s日が経過しているため返金できません。"
        )
    )

--- a/src/test/kotlin/kr/co/vividnext/sodalive/admin/charge/AdminChargeRefundServiceTest.kt
+++ b/src/test/kotlin/kr/co/vividnext/sodalive/admin/charge/AdminChargeRefundServiceTest.kt
@@ -0,0 +1,255 @@
+package kr.co.vividnext.sodalive.admin.charge
+
+import kr.co.vividnext.sodalive.can.charge.Charge
+import kr.co.vividnext.sodalive.can.charge.ChargeRepository
+import kr.co.vividnext.sodalive.can.charge.ChargeStatus
+import kr.co.vividnext.sodalive.can.payment.Payment
+import kr.co.vividnext.sodalive.can.payment.PaymentGateway
+import kr.co.vividnext.sodalive.can.payment.PaymentStatus
+import kr.co.vividnext.sodalive.common.SodaException
+import kr.co.vividnext.sodalive.i18n.Lang
+import kr.co.vividnext.sodalive.i18n.LangContext
+import kr.co.vividnext.sodalive.i18n.SodaMessageSource
+import kr.co.vividnext.sodalive.member.Member
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.junit.jupiter.api.Assertions.assertThrows
+import org.junit.jupiter.api.Assertions.assertTrue
+import org.junit.jupiter.api.BeforeEach
+import org.junit.jupiter.api.DisplayName
+import org.junit.jupiter.api.Test
+import org.mockito.Mockito
+import java.time.LocalDateTime
+import java.util.Optional
+
+@DisplayName("관리자 캔 환불 서비스 테스트")
+class AdminChargeRefundServiceTest {
+    private lateinit var chargeRepository: ChargeRepository
+    private lateinit var messageSource: SodaMessageSource
+    private lateinit var langContext: LangContext
+    private lateinit var service: AdminChargeRefundService
+
+    @BeforeEach
+    fun setup() {
+        // given: 테스트 대상 의존성을 목 객체로 준비한다.
+        chargeRepository = Mockito.mock(ChargeRepository::class.java)
+        messageSource = Mockito.mock(SodaMessageSource::class.java)
+        langContext = Mockito.mock(LangContext::class.java)
+
+        // given: 메시지 포맷 테스트를 위해 기본 언어를 한국어로 고정한다.
+        Mockito.`when`(langContext.lang).thenReturn(Lang.KO)
+
+        // given: 환불 서비스 인스턴스를 생성한다.
+        service = AdminChargeRefundService(
+            chargeRepository = chargeRepository,
+            messageSource = messageSource,
+            langContext = langContext
+        )
+    }
+
+    @Test
+    @DisplayName("사용하지 않은 구글 인앱 캔을 7일 이내에 환불한다")
+    fun shouldRefundGoogleIapCanWhenUnusedWithinSevenDays() {
+        // given: 구글 인앱 충전 캔을 보유한 회원을 준비한다.
+        val member = Member(password = "password", nickname = "tester")
+        member.googleChargeCan = 50
+        member.googleRewardCan = 10
+
+        // given: 7일 이내 생성된 충전/결제 데이터를 준비한다.
+        val charge = Charge(50, 10, status = ChargeStatus.CHARGE)
+        charge.id = 1L
+        charge.title = "50 캔 + 10 캔"
+        charge.createdAt = LocalDateTime.now().minusDays(3)
+        charge.member = member
+
+        val payment = Payment(status = PaymentStatus.COMPLETE, paymentGateway = PaymentGateway.GOOGLE_IAP)
+        charge.payment = payment
+
+        // given: 조회 시 환불 대상 충전을 반환하도록 설정한다.
+        Mockito.`when`(chargeRepository.findById(1L)).thenReturn(Optional.of(charge))
+
+        // when: 관리자 환불을 실행한다.
+        service.refund(AdminChargeRefundRequest(chargeId = 1L))
+
+        // then: 충전/결제/회원 캔 상태가 환불 기준으로 변경된다.
+        assertEquals(0, charge.chargeCan)
+        assertEquals(0, charge.rewardCan)
+        assertEquals(ChargeStatus.CANCEL, charge.status)
+        assertEquals(PaymentStatus.RETURN, payment.status)
+        assertEquals(0, member.googleChargeCan)
+        assertEquals(0, member.googleRewardCan)
+    }
+
+    @Test
+    @DisplayName("사용하지 않은 PG 캔을 7일 이내에 환불한다 (콤마 포함 제목 파싱)")
+    fun shouldRefundPgCanWhenUnusedWithinSevenDays() {
+        // given: PG 충전 캔을 보유한 회원을 준비한다.
+        val member = Member(password = "password", nickname = "tester")
+        member.pgChargeCan = 5000
+        member.pgRewardCan = 500
+
+        // given: 콤마가 포함된 제목과 7일 이내 생성된 충전/결제 데이터를 준비한다.
+        val charge = Charge(5000, 500, status = ChargeStatus.CHARGE)
+        charge.id = 2L
+        charge.title = "5,000 캔 + 500 캔"
+        charge.createdAt = LocalDateTime.now().minusDays(1)
+        charge.member = member
+
+        val payment = Payment(status = PaymentStatus.COMPLETE, paymentGateway = PaymentGateway.PG)
+        charge.payment = payment
+
+        // given: 조회 시 환불 대상 충전을 반환하도록 설정한다.
+        Mockito.`when`(chargeRepository.findById(2L)).thenReturn(Optional.of(charge))
+
+        // when: 관리자 환불을 실행한다.
+        service.refund(AdminChargeRefundRequest(chargeId = 2L))
+
+        // then: 충전/결제/회원 캔 상태가 환불 기준으로 변경된다.
+        assertEquals(0, charge.chargeCan)
+        assertEquals(0, charge.rewardCan)
+        assertEquals(ChargeStatus.CANCEL, charge.status)
+        assertEquals(PaymentStatus.RETURN, payment.status)
+        assertEquals(0, member.pgChargeCan)
+        assertEquals(0, member.pgRewardCan)
+    }
+
+    @Test
+    @DisplayName("제목이 단일 숫자(500캔)인 경우 chargeCan만 비교해 환불한다")
+    fun shouldRefundWhenTitleContainsOnlyChargeCanWithoutSpace() {
+        // given: 단일 숫자 제목과 일치하는 PG 충전 데이터를 준비한다.
+        val member = Member(password = "password", nickname = "tester")
+        member.pgChargeCan = 500
+        member.pgRewardCan = 0
+
+        val charge = Charge(500, 0, status = ChargeStatus.CHARGE)
+        charge.id = 21L
+        charge.title = "500캔"
+        charge.createdAt = LocalDateTime.now().minusDays(2)
+        charge.member = member
+
+        val payment = Payment(status = PaymentStatus.COMPLETE, paymentGateway = PaymentGateway.PG)
+        charge.payment = payment
+
+        // given: 조회 시 환불 대상 충전을 반환하도록 설정한다.
+        Mockito.`when`(chargeRepository.findById(21L)).thenReturn(Optional.of(charge))
+
+        // when: 관리자 환불을 실행한다.
+        service.refund(AdminChargeRefundRequest(chargeId = 21L))
+
+        // then: 단일 숫자 제목을 chargeCan으로 파싱해 정상 환불된다.
+        assertEquals(0, charge.chargeCan)
+        assertEquals(0, charge.rewardCan)
+        assertEquals(ChargeStatus.CANCEL, charge.status)
+        assertEquals(PaymentStatus.RETURN, payment.status)
+        assertEquals(0, member.pgChargeCan)
+        assertEquals(0, member.pgRewardCan)
+    }
+
+    @Test
+    @DisplayName("제목이 단일 숫자(4,000 캔)인 경우 콤마를 제거하고 chargeCan을 비교한다")
+    fun shouldRefundWhenTitleContainsOnlyChargeCanWithComma() {
+        // given: 콤마가 포함된 단일 숫자 제목과 일치하는 PG 충전 데이터를 준비한다.
+        val member = Member(password = "password", nickname = "tester")
+        member.pgChargeCan = 4000
+        member.pgRewardCan = 0
+
+        val charge = Charge(4000, 0, status = ChargeStatus.CHARGE)
+        charge.id = 22L
+        charge.title = "4,000 캔"
+        charge.createdAt = LocalDateTime.now().minusDays(2)
+        charge.member = member
+
+        val payment = Payment(status = PaymentStatus.COMPLETE, paymentGateway = PaymentGateway.PG)
+        charge.payment = payment
+
+        // given: 조회 시 환불 대상 충전을 반환하도록 설정한다.
+        Mockito.`when`(chargeRepository.findById(22L)).thenReturn(Optional.of(charge))
+
+        // when: 관리자 환불을 실행한다.
+        service.refund(AdminChargeRefundRequest(chargeId = 22L))
+
+        // then: 콤마를 제거한 값(4000)으로 비교해 정상 환불된다.
+        assertEquals(0, charge.chargeCan)
+        assertEquals(0, charge.rewardCan)
+        assertEquals(ChargeStatus.CANCEL, charge.status)
+        assertEquals(PaymentStatus.RETURN, payment.status)
+        assertEquals(0, member.pgChargeCan)
+        assertEquals(0, member.pgRewardCan)
+    }
+
+    @Test
+    @DisplayName("이미 사용한 캔은 환불할 수 없다")
+    fun shouldThrowWhenCanWasUsed() {
+        // given: 제목 숫자(원본) 대비 현재 charge 수량이 감소한 데이터를 준비한다.
+        val member = Member(password = "password", nickname = "tester")
+        member.pgChargeCan = 80
+        member.pgRewardCan = 50
+
+        val charge = Charge(80, 50, status = ChargeStatus.CHARGE)
+        charge.id = 3L
+        charge.title = "100 캔 + 50 캔"
+        charge.createdAt = LocalDateTime.now().minusDays(2)
+        charge.member = member
+
+        val payment = Payment(status = PaymentStatus.COMPLETE, paymentGateway = PaymentGateway.PG)
+        charge.payment = payment
+
+        // given: 조회 시 사용 이력이 있는 충전을 반환하도록 설정한다.
+        Mockito.`when`(chargeRepository.findById(3L)).thenReturn(Optional.of(charge))
+
+        // when: 관리자 환불을 실행하고 예외를 수집한다.
+        val exception = assertThrows(SodaException::class.java) {
+            service.refund(AdminChargeRefundRequest(chargeId = 3L))
+        }
+
+        // then: 사용 캔 환불 불가 메시지 키가 반환된다.
+        assertEquals("can.payment.refund.used_not_allowed", exception.messageKey)
+    }
+
+    @Test
+    @DisplayName("충전 후 7일이 지난 캔은 환불할 수 없다")
+    fun shouldThrowWhenChargedMoreThanSevenDaysAgo() {
+        // given: 7일을 초과한 충전 데이터를 준비한다.
+        val member = Member(password = "password", nickname = "tester")
+        member.pgChargeCan = 100
+        member.pgRewardCan = 20
+
+        val charge = Charge(100, 20, status = ChargeStatus.CHARGE)
+        charge.id = 4L
+        charge.title = "100 캔 + 20 캔"
+        charge.createdAt = LocalDateTime.now().minusDays(10)
+        charge.member = member
+
+        val payment = Payment(status = PaymentStatus.COMPLETE, paymentGateway = PaymentGateway.PG)
+        charge.payment = payment
+
+        // given: 조회 및 메시지 템플릿 반환 동작을 설정한다.
+        Mockito.`when`(chargeRepository.findById(4L)).thenReturn(Optional.of(charge))
+        Mockito.`when`(
+            messageSource.getMessage("can.payment.refund.days_exceeded", Lang.KO)
+        ).thenReturn("충천 후 %s일이 지나서 환불할 수 없습니다.")
+
+        // when: 관리자 환불을 실행하고 예외를 수집한다.
+        val exception = assertThrows(SodaException::class.java) {
+            service.refund(AdminChargeRefundRequest(chargeId = 4L))
+        }
+
+        // then: 일수 포함 환불 불가 메시지가 반환된다.
+        assertTrue(exception.message!!.startsWith("충천 후 "))
+        assertTrue(exception.message!!.contains("환불할 수 없습니다."))
+    }
+
+    @Test
+    @DisplayName("존재하지 않는 충전 건은 환불할 수 없다")
+    fun shouldThrowWhenChargeNotFound() {
+        // given: 환불 대상 충전이 존재하지 않도록 설정한다.
+        Mockito.`when`(chargeRepository.findById(999L)).thenReturn(Optional.empty())
+
+        // when: 관리자 환불을 실행하고 예외를 수집한다.
+        val exception = assertThrows(SodaException::class.java) {
+            service.refund(AdminChargeRefundRequest(chargeId = 999L))
+        }
+
+        // then: 잘못된 요청 메시지 키가 반환된다.
+        assertEquals("common.error.invalid_request", exception.messageKey)
+    }
+}