package roomescape.time.implement

import io.github.oshai.kotlinlogging.KLogger
import io.github.oshai.kotlinlogging.KotlinLogging
import org.springframework.stereotype.Component
import roomescape.reservation.implement.ReservationFinder
import roomescape.time.exception.TimeErrorCode
import roomescape.time.exception.TimeException
import roomescape.time.infrastructure.persistence.TimeEntity
import roomescape.time.infrastructure.persistence.TimeRepository
import java.time.LocalTime

private val log: KLogger = KotlinLogging.logger {}

@Component
class TimeValidator(
    private val timeRepository: TimeRepository,
    private val reservationFinder: ReservationFinder
) {
    fun validateIsAlreadyExists(startAt: LocalTime) {
        log.debug { "[TimeValidator.validateIsAlreadyExists] 시작: startAt=${startAt}" }

        if (timeRepository.existsByStartAt(startAt)) {
            log.info { "[TimeValidator.validateIsAlreadyExists] 중복 시간: startAt=$startAt" }
            throw TimeException(TimeErrorCode.TIME_DUPLICATED)
        }

        log.debug { "[TimeValidator.validateIsAlreadyExists] 완료: startAt=${startAt}" }
    }

    fun validateIsReserved(time: TimeEntity) {
        log.debug { "[TimeValidator.validateIsReserved] 시작: id=${time.id}, startAt=${time.startAt}" }

        if (reservationFinder.isTimeReserved(time)) {
            log.info { "[TimeValidator.validateIsReserved] 예약이 있는 시간: timeId=${time.id}, startAt=${time.startAt}" }
            throw TimeException(TimeErrorCode.TIME_ALREADY_RESERVED)
        }

        log.debug { "[TimeValidator.validateIsReserved] 시작: id=${time.id}, startAt=${time.startAt}" }
    }
}