package cn.lili.modules.lmk.service.impl;

import cn.lili.base.Result;
import cn.lili.common.exception.ServiceException;
import cn.lili.cos.CosSTS;
import cn.lili.modules.lmk.domain.entity.LmkFile;
import cn.lili.modules.lmk.domain.form.FileInfoForm;
import cn.lili.modules.lmk.domain.vo.LmkFileVO;
import cn.lili.modules.lmk.mapper.LmkFileMapper;
import cn.lili.modules.lmk.service.LmkFileService;
import cn.lili.utils.COSUtil;
import cn.lili.utils.FileUtil;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import lombok.RequiredArgsConstructor;
import org.springframework.beans.BeanUtils;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.List;

/**
 * 文件信息 服务实现类
 *
 * @author xp
 * @since 2025-05-19
 */
@Service
@RequiredArgsConstructor
public class LmkFileServiceImpl extends ServiceImpl<LmkFileMapper, LmkFile> implements LmkFileService {

    private final LmkFileMapper lmkFileMapper;
    private final COSUtil cosUtil;


    @Override
    public Result uploadObject(MultipartFile file) {
        LmkFile fileInfo = FileUtil.getFileInfo(file);
        try {
            cosUtil.upload(file.getInputStream(), fileInfo);
            lmkFileMapper.insert(fileInfo);
        } catch (IOException e) {
            e.printStackTrace();
            throw new ServiceException("上传异常，请重试");
        }
        String url = cosUtil.getPreviewUrl(fileInfo.getFileKey());
        LmkFileVO fileVo = new LmkFileVO().setUrl(url).setFileKey(fileInfo.getFileKey());
        return Result.ok("上传成功").data(fileVo);
    }

    @Override
    public Result uploadObjects(List<MultipartFile> files) {
        return null;
    }

    @Override
    public Result deleteObject(String fileKey) {
        cosUtil.deleteFile(fileKey);
        return Result.ok("删除成功");
    }

    @Override
    public Result deleteObjects(List<String> fileKeys) {
        cosUtil.deleteFiles(fileKeys);
        return Result.ok("删除成功");
    }

    @Override
    public void downloadObject(String fileKey, HttpServletResponse response) {
        cosUtil.download(fileKey, response);
    }

    @Override
    public String getPreviewUrl(String fileKey) {
        return cosUtil.getPreviewUrl(fileKey);
    }

    @Override
    public CosSTS getSTSToken() {
        return cosUtil.getSTS();
    }

    @Override
    @Transactional(propagation = Propagation.REQUIRED)
    public void addByForm(FileInfoForm fileInfo) {
        LmkFile file = new LmkFile();
        BeanUtils.copyProperties(fileInfo, file);
        baseMapper.insert(file);
    }
}