/*
 * Copyright (c) 2023. yo-saito. All Rights Reserved.
 */

package net.piedpiper.bremer.service.domain

import net.piedpiper.bremer.config.Log
import net.piedpiper.bremer.entity.AudioEntity
import net.piedpiper.bremer.entity.AudioPlayHistoryEntity
import net.piedpiper.bremer.repository.AudioRepository
import org.springframework.beans.factory.annotation.Qualifier
import org.springframework.stereotype.Service
import org.springframework.transaction.annotation.Transactional

@Service("bremer.service.AudioDomainService")
class AudioDomainService(
    @Qualifier("bremer.repository.AudioRepository")
    private val audioRepository: AudioRepository,
) {
    private val log by Log()

    @Transactional
    fun findOneBySlug(slug: String): AudioEntity? {
        val a = audioRepository.findOneBySlug(slug)
        log.info("audio: {}", a)
        return a
    }

    @Transactional
    fun findAllByOrderedIds(ids: List<Long>): List<AudioEntity> {
        val id2idx = ids.mapIndexed { index, id -> id to index }.toMap()
        return audioRepository.findAllByIdIn(ids)
            .sortedBy { id2idx[it.id] }
    }

    @Transactional
    fun findAllByOrderedSlugs(slugs: List<String>): List<AudioEntity> {
        if (slugs.isEmpty()) {
            return emptyList()
        }
        val slug2idx = slugs.mapIndexed { index, slug -> slug to index }.toMap()
        return audioRepository.findAllBySlugIn(slugs)
            .sortedBy { slug2idx[it.slug] }
    }

    @Transactional
    fun findAllLruLimit(limit: Int): List<AudioEntity> = audioRepository.findAllLruLimit(limit)

    @Transactional
    fun findAllByKeyword(
        nameLike: String?,
        artistNameLike: String?,
        albumNameLike: String?,
        limit: Int
    ): List<AudioEntity> {
        val set = mutableSetOf<AudioEntity>()
        if (nameLike?.isNotEmpty() == true) {
            set.addAll(audioRepository.findAllByNameLikeLimit(nameLike, limit))
        }
        if (artistNameLike?.isNotEmpty() == true) {
            set.addAll(audioRepository.findAllByArtistNameLikeLimit(artistNameLike, limit))
        }
        if (albumNameLike?.isNotEmpty() == true) {
            set.addAll(audioRepository.findAllByAlbumNameLikeLimit(albumNameLike, limit))
        }
        return set.take(limit).sortedByDescending { it.id }.toList()
    }

    fun savePlayedHistory(entity: AudioPlayHistoryEntity) =
        audioRepository.saveAudioPlayHistory(entity)
}