package cc.mrbird.febs.video.service.impl;

import cc.mrbird.febs.common.entity.QueryRequest;
import cc.mrbird.febs.common.exception.FebsException;
import cc.mrbird.febs.common.utils.AppContants;
import cc.mrbird.febs.common.utils.LoginUserUtil;
import cc.mrbird.febs.video.conversion.VideoConversion;
import cc.mrbird.febs.video.conversion.VideoMemberConversion;
import cc.mrbird.febs.video.dto.VideoListDto;
import cc.mrbird.febs.video.entity.*;
import cc.mrbird.febs.video.mapper.*;
import cc.mrbird.febs.video.service.IVideoMasterInfoService;
import cc.mrbird.febs.video.vo.VideoInfoItemVo;
import cc.mrbird.febs.video.vo.VideoInfoVo;
import cc.mrbird.febs.video.vo.VideoListVo;
import cn.hutool.core.collection.CollUtil;
import cn.hutool.core.util.StrUtil;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.List;

/**
 * @author wzy
 * @date 2021-12-15
 **/
@Slf4j
@Service
@RequiredArgsConstructor
public class VideoMasterInfoServiceImpl extends ServiceImpl<VideoMasterInfoMapper, VideoMasterInfoEntity> implements IVideoMasterInfoService {

    private final VideoMasterItemsMapper videoMasterItemsMapper;
    private final VideoMasterSourceMapper videoMasterSourceMapper;
    private final VideoMasterDataMapper videoMasterDataMapper;
    private final VideoMemberMapper videoMemberMapper;

    @Override
    public IPage<VideoMasterInfoEntity> findInPage(VideoMasterInfoEntity info, QueryRequest request) {
        Page<VideoMasterInfoEntity> page = new Page<>(request.getPageNum(), request.getPageSize());
        return this.baseMapper.selectInPage(info, page);
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public void addVideo(VideoMasterInfoEntity info) {

        this.baseMapper.insert(info);
        List<VideoMasterItemsEntity> items = info.getItems();
        if (CollUtil.isEmpty(items)) {
            throw new FebsException("章节异常");
        }

        int i = 1;
        for (VideoMasterItemsEntity item : items) {
            if (StrUtil.isBlank(item.getName())){
                throw new FebsException("章节标题未填写");
            }
            VideoMasterSourceEntity source = this.videoMasterSourceMapper.selectById(item.getSourceId());
            item.setMasterId(info.getId());
            item.setSeq(i);
            item.setVideoUrl(source.getUrl());

            this.videoMasterItemsMapper.insert(item);
            i++;
        }

        VideoMasterDataEntity data = new VideoMasterDataEntity();
        data.setMasterId(info.getId());
        data.setCollectCnt(0);
        data.setPlayCnt(0);
        data.setStarCnt(0);
        this.videoMasterDataMapper.insert(data);
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public void updateVideo(VideoMasterInfoEntity info) {
        this.baseMapper.updateById(info);

//        List<VideoMasterItemsEntity> beforeItems = this.videoMasterItemsMapper.selectItemsByMasterId(info.getId());
        List<VideoMasterItemsEntity> newItems = info.getItems();
        if (CollUtil.isEmpty(newItems)) {
            throw new FebsException("章节异常");
        }

        List<Long> existID = new ArrayList<>();
        List<VideoMasterItemsEntity> newInsert = new ArrayList<>();
        int i = 1;
        for (VideoMasterItemsEntity newItem : newItems) {
            if (StrUtil.isBlank(newItem.getName())) {
                throw new FebsException("章节标题未填写");
            }

            if (newItem.getId() != null) {
                newItem.setSeq(i);
                this.videoMasterItemsMapper.updateById(newItem);
                existID.add(newItem.getId());
                i++;
            } else {
                newInsert.add(newItem);
            }
        }

        if (CollUtil.isNotEmpty(existID)) {
            this.videoMasterItemsMapper.deleteNotInIds(existID, info.getId());
        }

        if (CollUtil.isNotEmpty(newInsert)) {
            for (VideoMasterItemsEntity item : newInsert) {
                VideoMasterSourceEntity source = this.videoMasterSourceMapper.selectById(item.getSourceId());
                item.setMasterId(info.getId());
                item.setVideoUrl(source.getUrl());
                item.setSeq(i);
                this.videoMasterItemsMapper.insert(item);

                i++;
            }
        }
    }

    @Override
    public VideoMasterInfoEntity findById(Long id) {
        return this.baseMapper.selectEntityById(id);
    }

    @Override
    public void changeIsUp(Long id) {
        VideoMasterInfoEntity masterInfo = this.baseMapper.selectById(id);
        if (masterInfo == null) {
            throw new FebsException("视频不存在");
        }
        if (AppContants.FLAG_INT_Y.equals(masterInfo.getIsUp())) {
            masterInfo.setIsUp(AppContants.FLAG_INT_N);
        } else {
            masterInfo.setIsUp(AppContants.FLAG_INT_Y);
        }

        this.baseMapper.updateById(masterInfo);
    }

    @Override
    public List<VideoListVo> findVideoList(VideoListDto videoListDto) {
        Page<VideoListVo> page = new Page<>(videoListDto.getPageNum(), videoListDto.getPageSize());

        videoListDto.setIsUp(AppContants.FLAG_INT_Y);
        IPage<VideoListVo> data = this.baseMapper.selectVideoListInPage(videoListDto, page);
        return data.getRecords();
    }

    @Override
    public VideoInfoVo findVideoInfo(Long videoId, Long itemId) {
        VideoMasterInfoEntity videoInfoEntity = this.baseMapper.selectEntityById(videoId);
        if (videoInfoEntity == null) {
            throw new FebsException("视频不存在");
        }

        VideoInfoVo videoInfoVo = VideoConversion.INSTANCE.videoInfoEntityToInfoVo(videoInfoEntity);
        List<VideoInfoItemVo> items = VideoConversion.INSTANCE.videoItemEntitiesToItemVoes(videoInfoEntity.getItems());
        videoInfoVo.setItems(items);

        VideoMasterDataEntity data = this.videoMasterDataMapper.selectDataByMasterId(videoInfoEntity.getId());
        videoInfoVo.setPlayCnt(data.getPlayCnt());
        videoInfoVo.setCollectCnt(data.getCollectCnt());
        videoInfoVo.setStarCnt(data.getStarCnt());

        VideoMemberEntity loginUser = LoginUserUtil.getLoginUser();
        if (loginUser == null) {
            videoInfoVo.setNotLogin(AppContants.FLAG_INT_N);
            return videoInfoVo;
        }

        if (AppContants.FLAG_INT_N.equals(videoInfoEntity.getIsFree())) {
            VideoMemberEntity member = this.videoMemberMapper.selectById(loginUser.getId());
            if (AppContants.FLAG_INT_N.equals(member.getIsVip())) {
                videoInfoVo.setNotVip(AppContants.FLAG_INT_N);
                return videoInfoVo;
            }
        }

        VideoMasterItemsEntity currentItem = this.videoMasterItemsMapper.selectItemByVideoIdAndItemId(videoId, itemId);
        if (currentItem == null) {
            throw new FebsException("视频不存在");
        }

        videoInfoVo.setNotLogin(AppContants.FLAG_INT_Y);
        videoInfoVo.setNotVip(AppContants.FLAG_INT_Y);
        videoInfoVo.setSubTitle(currentItem.getName());
        videoInfoVo.setVideoUrl(currentItem.getVideoUrl());
        videoInfoVo.setThumb(currentItem.getThumb());
        videoInfoVo.setItemId(currentItem.getId());
        videoInfoVo.setTimeLength(currentItem.getTimeLength());
        return videoInfoVo;
    }
}