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package com.mzl.flower.service.content;
 
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
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.AddAdvertisementDTO;
import com.mzl.flower.dto.request.content.UpdateAdvertisementDTO;
import com.mzl.flower.dto.response.content.AdvertisementDTO;
import com.mzl.flower.entity.content.Advertisement;
import com.mzl.flower.mapper.content.AdvertisementMapper;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
 
import java.util.List;
import java.util.stream.Collectors;
 
@Service
@Transactional
public class AdvertisementService {
 
    private final AdvertisementMapper advertisementMapper;
 
    public AdvertisementService(AdvertisementMapper advertisementMapper) {
        this.advertisementMapper = advertisementMapper;
    }
 
    public void add(AddAdvertisementDTO dto) {
        Advertisement advertisement = new Advertisement();
        advertisement.setContent(dto.getContent());
        advertisement.setTitle(dto.getTitle());
        advertisement.setCover(dto.getCover());
        advertisement.create(SecurityUtils.getUserId());
        advertisement.setStatus(Constants.COMMON_PUBLISH_STATUS.unpublished.name());
 
        advertisementMapper.insert(advertisement);
    }
 
    public void update(UpdateAdvertisementDTO dto) {
        Advertisement advertisement = advertisementMapper.selectById(dto.getId());
        if (advertisement == null) {
            throw new ValidationException("广告不存在");
        }
        advertisement.setContent(dto.getContent());
        advertisement.setTitle(dto.getTitle());
        advertisement.setCover(dto.getCover());
        advertisement.update(SecurityUtils.getUserId());
 
        advertisementMapper.updateById(advertisement);
    }
 
    public void delete(Long id) {
        advertisementMapper.deleteById(id);
    }
 
    public AdvertisementDTO detail(Long id) {
        Advertisement advertisement = advertisementMapper.selectById(id);
        if (advertisement == null) {
             return null;
        }
        AdvertisementDTO advertisementDTO = new AdvertisementDTO();
        BeanUtils.copyProperties(advertisement, advertisementDTO);
        return advertisementDTO;
    }
 
    public IPage<AdvertisementDTO> queryPage(String title, String status, Page page) {
        LambdaQueryWrapper<Advertisement> wrapper = new LambdaQueryWrapper<>();
        wrapper.orderByDesc(Advertisement::getCreateTime);
        if (StringUtils.isNotBlank(title)) {
             wrapper.like(Advertisement::getTitle, title);
        }
        if (StringUtils.isNotBlank(status)) {
              wrapper.eq(Advertisement::getStatus, status);
        }
        return advertisementMapper.selectPage(page, wrapper).convert(item -> {
               AdvertisementDTO advertisementDTO = new AdvertisementDTO();
               BeanUtils.copyProperties(item, advertisementDTO);
               advertisementDTO.setContent(null);
               return advertisementDTO;
        });
    }
 
    public void changeStatus(Long id) {
        Advertisement advertisement = advertisementMapper.selectById(id);
        if (advertisement == null) {
             throw new ValidationException("广告不存在");
        }
        if(Constants.COMMON_PUBLISH_STATUS.published.name().equals(advertisement.getStatus())){
            advertisement.setStatus(Constants.COMMON_PUBLISH_STATUS.unpublished.name());
        }else{
            advertisement.setStatus(Constants.COMMON_PUBLISH_STATUS.published.name());
        }
        advertisementMapper.updateById(advertisement);
    }
 
    public List<AdvertisementDTO> queryList(String title, String status) {
        LambdaQueryWrapper<Advertisement> wrapper = new LambdaQueryWrapper<>();
        wrapper.orderByDesc(Advertisement::getCreateTime);
        if (StringUtils.isNotBlank(title)) {
            wrapper.like(Advertisement::getTitle, title);
        }
        if (StringUtils.isNotBlank(status)) {
            wrapper.eq(Advertisement::getStatus, status);
        }
        return advertisementMapper.selectList(wrapper).stream().map(item -> {
            AdvertisementDTO advertisementDTO = new AdvertisementDTO();
            BeanUtils.copyProperties(item, advertisementDTO);
            return advertisementDTO;
        }).collect(Collectors.toList());
    }
 
    public void batchDelete(BatchDTO dto) {
        advertisementMapper.deleteBatchIds(dto.getIds());
    }
 
    public void batchPublish(BatchDTO dto) {
        List<Advertisement> list = advertisementMapper.selectList(new LambdaQueryWrapper<Advertisement>().in(Advertisement::getId, dto.getIds()));
        for (Advertisement advertisement : list) {
            advertisement.setStatus(Constants.COMMON_PUBLISH_STATUS.published.name());
            advertisementMapper.updateById(advertisement);
        }
    }
}