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

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.dto.request.film.FilmLikesDTO;
import com.mzl.flower.dto.request.film.FilmLikesQueryDTO;
import com.mzl.flower.dto.response.film.FilmLikesVO;
import com.mzl.flower.entity.film.FilmLikes;
import com.mzl.flower.mapper.film.FilmLikesMapper;
import com.mzl.flower.service.film.FilmLikesService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.time.LocalDateTime;

/**
 * <p>
 * 影视作品点赞表 服务实现类
 * </p>
 *
 * @author generator@Fang
 * @since 2025-05-29
 */
@Service
public class FilmLikesServiceImpl extends ServiceImpl<FilmLikesMapper, FilmLikes> implements FilmLikesService {

    @Resource
     private FilmLikesMapper filmLikesMapper;

    @Override
    public void saveFilmLikes(FilmLikesDTO filmLikesDTO) {
        FilmLikes filmLikes = new FilmLikes();
        filmLikes.setFilmId(filmLikesDTO.getFilmId());
        filmLikes.setStatus(true);
        if (filmLikesMapper.insert(filmLikes) <= 0) {
            throw new ValidationException("添加评论点赞失败");
        }
    }

    @Override
    public Boolean updateFilmLikes(FilmLikesDTO filmLikesDTO) {

        // 没有，新增
        FilmLikes filmLikes = filmLikesMapper.getFilmLikesByfilmIdAndCreateBy(filmLikesDTO.getFilmId(), SecurityUtils.getUserId());
        if (filmLikes == null) {
            filmLikes = new FilmLikes();
            filmLikes.setFilmId(filmLikesDTO.getFilmId());
            filmLikes.setStatus(true);
            filmLikes.setCreateBy(SecurityUtils.getUserId());
            if (filmLikesMapper.insert(filmLikes) <= 0) {
                throw new ValidationException("添加作品点赞失败");
            }
        } else {
            // 状态取反
            filmLikes.setStatus(!filmLikes.getStatus());
            filmLikes.update(SecurityUtils.getUserId());

            // 校验主键是否存在
            if (filmLikes.getId() == null) {
                throw new ValidationException("主键 ID 不能为空");
            }
            int affectedRows = filmLikesMapper.updateStatusById(
                    filmLikes.getId(),         // 确保 id 是 Long 类型
                    filmLikes.getStatus(),
                    SecurityUtils.getUserId()  // 更新人
            );
            if (affectedRows <= 0) {
                throw new ValidationException("更新作品点赞状态失败");
            }
        }
        return true;
    }

    @Override
    public void deleteFilmLikes(String id) {

    }

    @Override
    public Page<FilmLikesVO> queryPage(FilmLikesQueryDTO filmLikesQueryDTO, Page page) {
        return null;
    }
}