package com.mzl.flower.service.content;

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.content.QueryAnnouncementDTO;
import com.mzl.flower.dto.response.content.AnnouncementDTO;
import com.mzl.flower.entity.content.Announcement;
import com.mzl.flower.mapper.content.AnnouncementMapper;
import com.mzl.flower.utils.DateUtils;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

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

@Service
@Transactional
public class AnnouncementService {

    private final AnnouncementMapper announcementMapper;

    public AnnouncementService(AnnouncementMapper announcementMapper) {
        this.announcementMapper = announcementMapper;
    }

    public void add(Announcement dto) {
        if(dto.getId()!=null){
            throw new ValidationException("id必须为空");
        }
        dto.setStatus(Constants.COMMON_PUBLISH_STATUS.unpublished.name());
        dto.create(SecurityUtils.getUserId());
        announcementMapper.insert(dto);
    }

    public void update(Announcement dto) {
        if(dto.getId()==null || dto.getId()==0){
            throw new ValidationException("id不能为空");
        }
        Announcement announcement = announcementMapper.selectById(dto.getId());
        if(announcement==null){
            throw new ValidationException("找不到id为"+dto.getId()+"的公告");
        }
        BeanUtils.copyProperties(dto, announcement, "id", "createTime", "createBy","deleted","status","publishDate");
        announcement.update(SecurityUtils.getUserId());
        announcementMapper.updateById(announcement);
    }

    public void delete(Long id) {
        Announcement announcement = announcementMapper.selectById(id);
        if(announcement==null){
            throw new ValidationException("找不到id为"+id+"的公告");
        }
        announcementMapper.deleteById(id);
    }

    public AnnouncementDTO detail(Long id) {
        Announcement announcement = announcementMapper.selectById(id);
        if(announcement==null){
           return null;
        }
        AnnouncementDTO dto = new AnnouncementDTO();
        BeanUtils.copyProperties(announcement,dto);
        return dto;
    }

    public Page<AnnouncementDTO> queryPage(QueryAnnouncementDTO 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));
        }
       List<AnnouncementDTO> list =  announcementMapper.queryPage(dto,page);
        page.setRecords(list);
        return page;

    }

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

    public void batchDelete(BatchDTO dto) {
        announcementMapper.deleteBatchIds(dto.getIds());
    }

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

    public List<AnnouncementDTO> queryList(String type) {
        QueryAnnouncementDTO dto = new QueryAnnouncementDTO();
        dto.setType(type);
        dto.setStatus(Constants.COMMON_PUBLISH_STATUS.published.name());
        List<AnnouncementDTO> list =  announcementMapper.queryList(dto);
        return list;
    }
}