package roomescape.theme.implement

import io.github.oshai.kotlinlogging.KLogger
import io.github.oshai.kotlinlogging.KotlinLogging
import org.springframework.data.repository.findByIdOrNull
import org.springframework.stereotype.Component
import roomescape.theme.exception.ThemeErrorCode
import roomescape.theme.exception.ThemeException
import roomescape.theme.infrastructure.persistence.ThemeEntity
import roomescape.theme.infrastructure.persistence.ThemeRepository
import java.time.LocalDate

private val log: KLogger = KotlinLogging.logger {}

@Component
class ThemeFinder(
    private val themeRepository: ThemeRepository
) {
    fun findAll(): List<ThemeEntity> {
        log.debug { "[ThemeFinder.findAll] 시작" }

        return themeRepository.findAll()
            .also { log.debug { "[TimeFinder.findAll] ${it.size}개 테마 조회 완료" } }
    }

    fun findById(id: Long): ThemeEntity {
        log.debug { "[ThemeFinder.findById] 조회 시작: memberId=$id" }

        return themeRepository.findByIdOrNull(id)
            ?.also { log.debug { "[ThemeFinder.findById] 조회 완료: id=$id, name=${it.name}" } }
            ?: run {
                log.warn { "[ThemeFinder.findById] 조회 실패: id=$id" }
                throw ThemeException(ThemeErrorCode.THEME_NOT_FOUND)
            }
    }

    fun findMostReservedThemes(
        count: Int,
        startFrom: LocalDate,
        endAt: LocalDate
    ): List<ThemeEntity> {
        log.debug { "[ThemeFinder.findMostReservedThemes] 시작. count=$count, startFrom=$startFrom, endAt=$endAt" }

        return themeRepository.findPopularThemes(startFrom, endAt, count)
            .also { log.debug { "[ThemeFinder.findMostReservedThemes] ${it.size} / ${count}개 테마 조회 완료" } }
    }
}