package com.mzl.flower.service.film.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.mzl.flower.config.exception.ValidationException;
import com.mzl.flower.config.security.SecurityUtils;
import com.mzl.flower.constant.Constants;
import com.mzl.flower.dto.BatchDTO;
import com.mzl.flower.dto.request.film.FilmWorksDTO;
import com.mzl.flower.dto.request.film.FilmWorksQueryDTO;
import com.mzl.flower.dto.request.system.UserInfoDTO;
import com.mzl.flower.dto.response.customer.CustomerDTO;
import com.mzl.flower.dto.response.film.FilmWorksVO;
import com.mzl.flower.entity.film.FilmWorks;
import com.mzl.flower.mapper.customer.CustomerMapper;
import com.mzl.flower.mapper.film.FilmWorksMapper;
import com.mzl.flower.service.film.FilmWorksService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.mzl.flower.utils.DateUtils;
import lombok.RequiredArgsConstructor;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.ObjectUtils;

import java.time.LocalDate;
import java.util.List;

/**
 * <p>
 * 影视作品信息表 服务实现类
 * </p>
 *
 * @author generator@Fang
 * @since 2025-05-19
 */
@Service
@Transactional
@RequiredArgsConstructor
public class FilmWorksServiceImpl extends ServiceImpl<FilmWorksMapper, FilmWorks> implements FilmWorksService {

    private final FilmWorksMapper filmWorksMapper;
    private final CustomerMapper customerMapper;

    @Override
    public void saveFilmWorks(FilmWorksDTO filmWorksDTO) {
        //  转换
        FilmWorks filmWorks = new FilmWorks();
        BeanUtils.copyProperties(filmWorksDTO, filmWorks);
        filmWorks.create();
        filmWorks.setStatus(Constants.COMMON_PUBLISH_STATUS.unpublished.name());
        filmWorksMapper.insert(filmWorks);
    }

    @Override
    public void updateFilmWorks(FilmWorksDTO filmWorksDTO) {
        FilmWorks filmWork = filmWorksMapper.selectById(filmWorksDTO.getId());
        FilmWorks filmWorks = new FilmWorks();
        BeanUtils.copyProperties(filmWorksDTO,filmWorks);

        if (filmWork != null) {
            filmWorks.setClassify(filmWork.getClassify());
            filmWorks.setCreateBy(filmWork.getCreateBy());
            filmWorks.setCreateTime(filmWork.getCreateTime());
            filmWorks.setStatus(filmWork.getStatus());
        }

        filmWorks.update(SecurityUtils.getUserId());
        filmWorksMapper.updateById(filmWorks);
    }

    @Override
    public void deleteFilmWorks(String id) {
        FilmWorks filmWork = filmWorksMapper.selectById(id);
        if(filmWork==null){
            throw new ValidationException("找不到id为"+id+"的影视作品");
        }
        filmWorksMapper.deleteById(id);
    }

    @Override
    public Page<FilmWorksVO> queryPage(FilmWorksQueryDTO dto, Page page) {
        if(StringUtils.isNotBlank(dto.getCreateDateBeginStr())){
            dto.setCreateDateBegin(DateUtils.dateToLocalDateTime(dto.getCreateDateBeginStr(),true));
        }
        if(StringUtils.isNotBlank(dto.getCreateDateEndStr())){
            dto.setCreateDateEnd(DateUtils.dateToLocalDateTime(dto.getCreateDateEndStr(),false));
        }

        //todo 这里的用户ID可能为空，用户存在不登录的情况下访问，传null
        try {
            dto.setUserId(SecurityUtils.getUserId());
        } catch (Exception e) {
            dto.setUserId(null);
        }

        List<FilmWorksVO> list =  filmWorksMapper.queryPage(dto,page);
        page.setRecords(list);


        return page;
    }

    @Override
    public List<FilmWorksVO> getFilmWorksAll() {
        return filmWorksMapper.getFilmWorksAll();
    }

    @Override
    public void changeStatus(Long id) {
        FilmWorks filmWork = filmWorksMapper.selectById(id);
        if (filmWork == null) {
            throw new ValidationException("找不到id为" + id + "的公告");
        }
        if (Constants.COMMON_PUBLISH_STATUS.published.name().equals(filmWork.getStatus())) {
            filmWork.setStatus(Constants.COMMON_PUBLISH_STATUS.unpublished.name());
        } else {
            filmWork.setStatus(Constants.COMMON_PUBLISH_STATUS.published.name());
            filmWork.setPublishDate(LocalDate.now());
        }
        filmWorksMapper.updateById(filmWork);
    }


    @Override
    public void changeTopState(Long id) {
        FilmWorks filmWork = filmWorksMapper.selectById(id);
        if (filmWork == null) {
            throw new ValidationException("找不到id为" + id + "的公告");
        }
        if (Constants.COMMON_PUBLISH_STATUS.unpublished.name().equals(filmWork.getStatus())) {
            throw new ValidationException("未发布作品不能置顶，请先发布");
        }

        FilmWorks filmWorkTop = filmWorksMapper.getTopStickyWeight();
        if (!ObjectUtils.isEmpty(filmWorkTop)) {
            filmWork.setStickyWeight(filmWorkTop.getStickyWeight() + 100);
        } else {
            filmWork.setStickyWeight(100);
        }
        filmWorksMapper.updateById(filmWork);
    }


    @Override
    public void changeDownState(Long id) {
        FilmWorks filmWork = filmWorksMapper.selectById(id);
        if (filmWork == null) {
            throw new ValidationException("找不到id为" + id + "的公告");
        }
        if (Constants.COMMON_PUBLISH_STATUS.unpublished.name().equals(filmWork.getStatus())) {
            throw new ValidationException("未发布作品无需清除权重");
        }
        filmWork.setStickyWeight(0);
        filmWorksMapper.updateById(filmWork);
    }

    @Override
    public void batchDelete(BatchDTO dto) {
        filmWorksMapper.deleteBatchIds(dto.getIds());
    }

    @Override
    public void batchPublish(BatchDTO dto) {
        List<FilmWorks> list = filmWorksMapper.selectList(new LambdaQueryWrapper<FilmWorks>().in(FilmWorks::getId, dto.getIds()));
        for (FilmWorks filmWork : list) {
            filmWork.setStatus(Constants.COMMON_PUBLISH_STATUS.published.name());
            filmWork.setPublishDate(LocalDate.now());
            filmWorksMapper.updateById(filmWork);
        }
    }

    @Override
    public FilmWorksVO detail(Long id) {
        // userId 可以是空，因为用户可以登录

        String userId = SecurityUtils.getUserId();
        FilmWorksVO filmWorksVO = filmWorksMapper.selectInfoById(id,userId);
        if(filmWorksVO==null){
            return null;
        }
        CustomerDTO currentCustomer = customerMapper.getCurrentCustomer(filmWorksVO.getCreateBy());
        filmWorksVO.setNickname(currentCustomer.getNickName());
        filmWorksVO.setAvatar(currentCustomer.getCover());
        return filmWorksVO;
    }
}