feat: reservation 도메인에 Finder,Writer,Validator 추가

src/main/kotlin/roomescape/reservation/implement/ReservationFinder.kt

@@ -2,12 +2,16 @@ package roomescape.reservation.implement
 
 import io.github.oshai.kotlinlogging.KLogger
 import io.github.oshai.kotlinlogging.KotlinLogging
+import org.springframework.data.jpa.domain.Specification
 import org.springframework.data.repository.findByIdOrNull
 import org.springframework.stereotype.Component
 import roomescape.reservation.exception.ReservationErrorCode
 import roomescape.reservation.exception.ReservationException
 import roomescape.reservation.infrastructure.persistence.ReservationEntity
 import roomescape.reservation.infrastructure.persistence.ReservationRepository
+import roomescape.reservation.infrastructure.persistence.ReservationSearchSpecification
+import roomescape.reservation.infrastructure.persistence.ReservationStatus
+import roomescape.reservation.web.MyReservationRetrieveResponse
 import roomescape.theme.infrastructure.persistence.ThemeEntity
 import roomescape.time.infrastructure.persistence.TimeEntity
 import java.time.LocalDate
@@ -16,7 +20,8 @@ private val log: KLogger = KotlinLogging.logger {}
 
 @Component
 class ReservationFinder(
-    private val reservationRepository: ReservationRepository
+    private val reservationRepository: ReservationRepository,
+    private val reservationValidator: ReservationValidator,
 ) {
     fun findById(id: Long): ReservationEntity {
         log.debug { "[ReservationFinder.findById] 시작: id=$id" }
@@ -29,11 +34,15 @@ class ReservationFinder(
             }
     }
 
-    fun isTimeReserved(time: TimeEntity): Boolean {
+    fun findAllByStatuses(vararg statuses: ReservationStatus): List<ReservationEntity> {
-        log.debug { "[ReservationFinder.isTimeReserved] 시작: timeId=${time.id}, startAt=${time.startAt}" }
+        log.debug { "[ReservationFinder.findAll] 시작: status=${statuses}" }
 
-        return reservationRepository.existsByTime(time)
+        val spec = ReservationSearchSpecification()
-            .also { log.debug { "[ReservationFinder.isTimeReserved] 완료: isExist=$it, timeId=${time.id}, startAt=${time.startAt}" } }
+            .status(*statuses)
+            .build()
+
+        return reservationRepository.findAll(spec)
+            .also { log.debug { "[ReservationFinder.findAll] ${it.size}개 예약 조회 완료: status=${statuses}" } }
     }
 
     fun findAllByDateAndTheme(
@@ -44,4 +53,42 @@ class ReservationFinder(
         return reservationRepository.findAllByDateAndTheme(date, theme)
             .also { log.debug { "[ReservationFinder.findAllByDateAndTheme] ${it.size}개 조회 완료: date=$date, themeId=${theme.id}" } }
     }
+
+    fun findAllByMemberId(memberId: Long): List<MyReservationRetrieveResponse> {
+        log.debug { "[ReservationFinder.findAllByMemberId] 시작: memberId=${memberId}" }
+
+        return reservationRepository.findAllByMemberId(memberId)
+            .also { log.debug { "[ReservationFinder.findAllByMemberId] ${it.size}개 예약(대기) 조회 완료: memberId=${memberId}" } }
+    }
+
+    fun searchReservations(
+        themeId: Long?,
+        memberId: Long?,
+        startFrom: LocalDate?,
+        endAt: LocalDate?,
+    ): List<ReservationEntity> {
+        reservationValidator.validateSearchDateRange(startFrom, endAt)
+
+        val spec: Specification<ReservationEntity> = ReservationSearchSpecification()
+            .sameThemeId(themeId)
+            .sameMemberId(memberId)
+            .dateStartFrom(startFrom)
+            .dateEndAt(endAt)
+            .status(ReservationStatus.CONFIRMED, ReservationStatus.CONFIRMED_PAYMENT_REQUIRED)
+            .build()
+
+        return reservationRepository.findAll(spec)
+            .also {
+                log.debug { "[ReservationFinder.searchReservations] ${it.size}개 예약 조회 완료. " +
+                    "themeId=${themeId}, memberId=${memberId}, startFrom=${startFrom}, endAt=${endAt}" }
+            }
+
+    }
+
+    fun isTimeReserved(time: TimeEntity): Boolean {
+        log.debug { "[ReservationFinder.isTimeReserved] 시작: timeId=${time.id}, startAt=${time.startAt}" }
+
+        return reservationRepository.existsByTime(time)
+            .also { log.debug { "[ReservationFinder.isTimeReserved] 완료: isExist=$it, timeId=${time.id}, startAt=${time.startAt}" } }
+    }
 }

src/main/kotlin/roomescape/reservation/implement/ReservationValidator.kt

@@ -1,11 +1,132 @@
 package roomescape.reservation.implement
 
+import io.github.oshai.kotlinlogging.KLogger
+import io.github.oshai.kotlinlogging.KotlinLogging
+import org.springframework.data.jpa.domain.Specification
 import org.springframework.stereotype.Component
+import roomescape.member.infrastructure.persistence.MemberEntity
+import roomescape.reservation.exception.ReservationErrorCode
+import roomescape.reservation.exception.ReservationException
+import roomescape.reservation.infrastructure.persistence.ReservationEntity
 import roomescape.reservation.infrastructure.persistence.ReservationRepository
+import roomescape.reservation.infrastructure.persistence.ReservationSearchSpecification
+import roomescape.theme.infrastructure.persistence.ThemeEntity
+import roomescape.time.infrastructure.persistence.TimeEntity
+import java.time.LocalDate
+import java.time.LocalDateTime
+import java.time.LocalTime
+
+private val log: KLogger = KotlinLogging.logger {}
 
 @Component
 class ReservationValidator(
-    private val reservationRepository: ReservationRepository
+    private val reservationRepository: ReservationRepository,
 ) {
+    fun validateIsNotPast(
+        requestDate: LocalDate,
+        requestTime: LocalTime,
+    ) {
+        val now = LocalDateTime.now()
+        val requestDateTime = LocalDateTime.of(requestDate, requestTime)
+        log.debug { "[ReservationValidator.validateDateAndTime] 시작. request=$requestDateTime, now=$now" }
 
+        if (requestDateTime.isBefore(now)) {
+            log.info { "[ReservationValidator.validateDateAndTime] 날짜 범위 오류. request=$requestDateTime, now=$now" }
+            throw ReservationException(ReservationErrorCode.PAST_REQUEST_DATETIME)
+        }
+
+        log.debug { "[ReservationValidator.validateDateAndTime] 완료. request=$requestDateTime, now=$now" }
+    }
+
+    fun validateSearchDateRange(startFrom: LocalDate?, endAt: LocalDate?) {
+        log.debug { "[ReservationValidator.validateSearchDateRange] 시작: startFrom=$startFrom, endAt=$endAt" }
+        if (startFrom == null || endAt == null) {
+            return
+        }
+        if (startFrom.isAfter(endAt)) {
+            log.info { "[ReservationValidator.validateSearchDateRange] 날짜 범위 오류: startFrom=$startFrom, endAt=$endAt" }
+            throw ReservationException(ReservationErrorCode.INVALID_SEARCH_DATE_RANGE)
+        }
+        log.debug { "[ReservationValidator.validateSearchDateRange] 완료: startFrom=$startFrom, endAt=$endAt" }
+    }
+
+    fun validateIsAlreadyExists(date: LocalDate, time: TimeEntity, theme: ThemeEntity) {
+        val themeId = theme.id
+        val timeId = time.id
+
+        log.debug { "[ReservationValidator.validateIsAlreadyExists] 시작: date=$date, timeId=$timeId, themeId=$themeId" }
+
+        val spec: Specification<ReservationEntity> = ReservationSearchSpecification()
+            .sameThemeId(themeId)
+            .sameTimeId(timeId)
+            .sameDate(date)
+            .build()
+
+        if (reservationRepository.exists(spec)) {
+            log.warn { "[ReservationValidator.validateIsAlreadyExists] 중복된 예약 존재: date=$date, timeId=$timeId, themeId=$themeId" }
+            throw ReservationException(ReservationErrorCode.RESERVATION_DUPLICATED)
+        }
+
+        log.debug { "[ReservationValidator.validateIsAlreadyExists] 완료: date=$date, timeId=$timeId, themeId=$themeId" }
+    }
+
+    fun validateMemberAlreadyReserve(themeId: Long, timeId: Long, date: LocalDate, requesterId: Long) {
+        log.debug { "[ReservationValidator.validateMemberAlreadyReserve] 시작: themeId=$themeId, timeId=$timeId, date=$date, requesterId=$requesterId" }
+
+        val spec: Specification<ReservationEntity> = ReservationSearchSpecification()
+            .sameMemberId(requesterId)
+            .sameThemeId(themeId)
+            .sameTimeId(timeId)
+            .sameDate(date)
+            .build()
+
+        if (reservationRepository.exists(spec)) {
+            log.warn { "[ReservationValidator.validateMemberAlreadyReserve] 중복된 예약 존재: themeId=$themeId, timeId=$timeId, date=$date" }
+            throw ReservationException(ReservationErrorCode.ALREADY_RESERVE)
+        }
+
+        log.debug { "[ReservationValidator.validateMemberAlreadyReserve] 완료: themeId=$themeId, timeId=$timeId, date=$date, requesterId=$requesterId" }
+    }
+
+    fun validateIsWaiting(reservation: ReservationEntity) {
+        log.debug { "[ReservationValidator.validateIsWaiting] 시작: reservationId=${reservation.id}, status=${reservation.status}" }
+
+        if (!reservation.isWaiting()) {
+            log.warn { "[ReservationValidator.validateIsWaiting] 대기 상태가 아님: reservationId=${reservation.id}, status=${reservation.status}" }
+            throw ReservationException(ReservationErrorCode.ALREADY_CONFIRMED)
+        }
+
+        log.debug { "[ReservationValidator.validateIsWaiting] 완료: reservationId=${reservation.id}, status=${reservation.status}" }
+    }
+
+    fun validateCreateAuthority(requester: MemberEntity) {
+        log.debug { "[ReservationValidator.validateCreateAuthority] 시작: requesterId=${requester.id}" }
+
+        if (!requester.isAdmin()) {
+            log.error { "[ReservationValidator.validateCreateAuthority] 관리자가 아닌 다른 회원의 예약 시도: requesterId=${requester.id}" }
+            throw ReservationException(ReservationErrorCode.NO_PERMISSION)
+        }
+
+        log.debug { "[ReservationValidator.validateCreateAuthority] 완료: requesterId=${requester.id}" }
+    }
+
+    fun validateDeleteAuthority(reservation: ReservationEntity, requester: MemberEntity) {
+        val requesterId: Long = requester.id!!
+        log.debug { "[ReservationValidator.validateDeleteAuthority] 시작: reservationId=${reservation.id}, requesterId=${requesterId}" }
+
+        if (requester.isAdmin()) {
+            log.debug { "[ReservationValidator.validateDeleteAuthority] 완료: reservationId=${reservation.id} requesterId=${requesterId}(Admin)" }
+            return
+        }
+
+        if (!reservation.isReservedBy(requesterId)) {
+            log.error {
+                "[ReservationValidator.validateDeleteAuthority] 예약자 본인이 아님: reservationId=${reservation.id}" +
+                        ", memberId=${reservation.member.id} requesterId=${requesterId} "
+            }
+            throw ReservationException(ReservationErrorCode.NOT_RESERVATION_OWNER)
+        }
+
+        log.debug { "[ReservationValidator.validateDeleteAuthority] 완료: reservationId=${reservation.id}, requesterId=$requesterId" }
+    }
 }

src/main/kotlin/roomescape/reservation/implement/ReservationWriter.kt

@@ -0,0 +1,109 @@
+package roomescape.reservation.implement
+
+import com.github.f4b6a3.tsid.TsidFactory
+import io.github.oshai.kotlinlogging.KLogger
+import io.github.oshai.kotlinlogging.KotlinLogging
+import org.springframework.stereotype.Component
+import roomescape.common.config.next
+import roomescape.member.implement.MemberFinder
+import roomescape.reservation.exception.ReservationErrorCode
+import roomescape.reservation.exception.ReservationException
+import roomescape.reservation.infrastructure.persistence.ReservationEntity
+import roomescape.reservation.infrastructure.persistence.ReservationRepository
+import roomescape.reservation.infrastructure.persistence.ReservationStatus
+import roomescape.theme.implement.ThemeFinder
+import roomescape.time.implement.TimeFinder
+import java.time.LocalDate
+
+private val log: KLogger = KotlinLogging.logger {}
+
+@Component
+class ReservationWriter(
+    private val reservationValidator: ReservationValidator,
+    private val reservationRepository: ReservationRepository,
+    private val memberFinder: MemberFinder,
+    private val timeFinder: TimeFinder,
+    private val themeFinder: ThemeFinder,
+    private val tsidFactory: TsidFactory,
+) {
+    fun create(
+        date: LocalDate,
+        timeId: Long,
+        themeId: Long,
+        memberId: Long,
+        status: ReservationStatus,
+        requesterId: Long
+    ): ReservationEntity {
+        log.debug {
+            "[ReservationWriter.create] 시작: " +
+                    "date=${date}, timeId=${timeId}, themeId=${themeId}, memberId=${memberId}, status=${status}"
+        }
+        val time = timeFinder.findById(timeId).also {
+            reservationValidator.validateIsNotPast(date, it.startAt)
+        }
+        val theme = themeFinder.findById(themeId)
+
+        val member = memberFinder.findById(memberId).also {
+            if (status == ReservationStatus.WAITING) {
+                reservationValidator.validateMemberAlreadyReserve(themeId, timeId, date, it.id!!)
+            } else {
+                reservationValidator.validateIsAlreadyExists(date, time, theme)
+            }
+
+            if (memberId != requesterId) {
+                val requester = memberFinder.findById(requesterId)
+                reservationValidator.validateCreateAuthority(requester)
+            }
+        }
+
+        val reservation = ReservationEntity(
+            _id = tsidFactory.next(),
+            date = date,
+            time = time,
+            theme = theme,
+            member = member,
+            status = status
+        )
+
+        return reservationRepository.save(reservation)
+            .also { log.debug { "[ReservationWriter.create] 완료: reservationId=${it.id}, status=${it.status}" } }
+    }
+
+    fun deleteWaiting(reservation: ReservationEntity, requesterId: Long) {
+        log.debug { "[ReservationWriter.deleteWaiting] 시작: reservationId=${reservation.id}, requesterId=${requesterId}" }
+
+        reservationValidator.validateIsWaiting(reservation)
+
+        delete(reservation, requesterId)
+            .also { log.debug { "[ReservationWriter.deleteWaiting] 완료: reservationId=${reservation.id}, status=${reservation.status}" } }
+    }
+
+    fun deleteConfirmed(reservation: ReservationEntity, requesterId: Long) {
+        log.debug { "[ReservationWriter.deleteConfirmed] 시작: reservationId=${reservation.id}, requesterId=${requesterId}" }
+
+        delete(reservation, requesterId)
+            .also { log.debug { "[ReservationWriter.deleteConfirmed] 완료: reservationId=${reservation.id}, status=${reservation.status}" } }
+    }
+
+    private fun delete(reservation: ReservationEntity, requesterId: Long) {
+        memberFinder.findById(requesterId)
+            .also { reservationValidator.validateDeleteAuthority(reservation, requester = it) }
+
+        reservationRepository.delete(reservation)
+    }
+
+    fun confirm(reservationId: Long) {
+        log.debug { "[ReservationWriter.confirm] 대기 여부 확인 시작: reservationId=$reservationId" }
+
+        if (reservationRepository.isExistConfirmedReservation(reservationId)) {
+            log.warn { "[ReservationWriter.confirm] 이미 확정된 예약 존재: reservationId=$reservationId" }
+            throw ReservationException(ReservationErrorCode.CONFIRMED_RESERVATION_ALREADY_EXISTS)
+        }
+
+        reservationRepository.updateStatusByReservationId(
+            reservationId, ReservationStatus.CONFIRMED_PAYMENT_REQUIRED
+        )
+
+        log.debug { "[ReservationWriter.confirm] 완료: reservationId=$reservationId, status=${ReservationStatus.CONFIRMED_PAYMENT_REQUIRED}" }
+    }
+}