package roomescape.reservation.business

import io.github.oshai.kotlinlogging.KLogger
import io.github.oshai.kotlinlogging.KotlinLogging
import jakarta.transaction.Transactional
import org.springframework.stereotype.Service
import roomescape.reservation.implement.ReservationFinder
import roomescape.reservation.implement.ReservationWriter
import roomescape.reservation.infrastructure.persistence.ReservationEntity
import roomescape.reservation.infrastructure.persistence.ReservationStatus
import roomescape.reservation.web.*

private val log: KLogger = KotlinLogging.logger {}

@Service
@Transactional
class ReservationWriteService(
    private val reservationFinder: ReservationFinder,
    private val reservationWriter: ReservationWriter
) {
    fun createReservationWithPayment(
        request: ReservationCreateWithPaymentRequest,
        memberId: Long
    ): ReservationEntity {
        log.debug { "[ReservationCommandService.createReservationByAdmin] 시작: date=${request.date}, timeId=${request.timeId}, themeId=${request.themeId}, memberId=${memberId}" }

        val created: ReservationEntity = reservationWriter.create(
            date = request.date,
            timeId = request.timeId,
            themeId = request.themeId,
            status = ReservationStatus.CONFIRMED,
            memberId = memberId,
            requesterId = memberId
        )

        return created.also {
            log.info { "[ReservationCommandService.createReservationByAdmin] 완료: reservationId=${it.id}" }
        }
    }

    fun createReservationByAdmin(
        request: AdminReservationCreateRequest,
        memberId: Long
    ): ReservationCreateResponse {
        log.debug { "[ReservationCommandService.createReservationByAdmin] 시작: date=${request.date}, timeId=${request.timeId}, themeId=${request.themeId}, memberId=${request.memberId} by adminId=${memberId}" }

        val created: ReservationEntity = reservationWriter.create(
            date = request.date,
            timeId = request.timeId,
            themeId = request.themeId,
            status = ReservationStatus.CONFIRMED_PAYMENT_REQUIRED,
            memberId = request.memberId,
            requesterId = memberId
        )

        return created.toCreateResponse()
            .also {
                log.info { "[ReservationCommandService.createReservationByAdmin] 관리자 예약 추가 완료: reservationId=${it.id}" }
            }
    }

    fun createWaiting(request: WaitingCreateRequest, memberId: Long): ReservationCreateResponse {
        log.debug { "[ReservationCommandService.createWaiting] 시작: date=${request.date}, timeId=${request.timeId}, themeId=${request.themeId}, memberId=${memberId}" }

        val created: ReservationEntity = reservationWriter.create(
            date = request.date,
            timeId = request.timeId,
            themeId = request.themeId,
            status = ReservationStatus.WAITING,
            memberId = memberId,
            requesterId = memberId
        )

        return created.toCreateResponse()
            .also {
                log.info { "[ReservationCommandService.createWaiting] 완료: reservationId=${it.id}" }
            }
    }

    fun deleteReservation(reservationId: Long, memberId: Long) {
        log.debug { "[ReservationCommandService.deleteReservation] 시작: reservationId=${reservationId}, memberId=$memberId" }

        val reservation: ReservationEntity = reservationFinder.findById(reservationId)

        reservationWriter.deleteConfirmed(reservation, requesterId = memberId)
            .also { log.info { "[ReservationCommandService.deleteReservation] 완료: reservationId=${reservationId}" } }
    }

    fun confirmWaiting(reservationId: Long, memberId: Long) {
        log.debug { "[ReservationCommandService.confirmWaiting] 시작: reservationId=$reservationId (by adminId=$memberId)" }

        reservationWriter.confirm(reservationId)
            .also { log.info { "[ReservationCommandService.confirmWaiting] 완료: reservationId=$reservationId" } }
    }

    fun deleteWaiting(reservationId: Long, memberId: Long) {
        log.debug { "[ReservationCommandService.deleteWaiting] 시작: reservationId=$reservationId (by adminId=$memberId)" }

        val reservation: ReservationEntity = reservationFinder.findById(reservationId)

        reservationWriter.deleteWaiting(reservation, requesterId = memberId)
            .also { log.info { "[ReservationCommandService.deleteWaiting] 완료: reservationId=$reservationId" } }
    }
}