package com.terra.system.service.data;

import com.terra.system.entity.all.SettingData;
import com.terra.system.entity.sys.AttachEntity;
import com.terra.system.entity.sys.UserEntity;
import com.terra.system.helper.FileHelper;
import com.terra.system.helper.PathHelper;
import com.terra.system.service.sys.AttachService;
import javax.annotation.Resource;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletRequest;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

/**
 * 数据检索服务
 * @author WWW
 */
@Service
public class DataQueryService {
    @Resource
    PathHelper pathHelper;

    @Resource
    AttachService attachService;

    /**
     * 上传文件
     */
    public Integer uploadFiles(UserEntity ue, String tabName, String eventid, MultipartFile[] files, HttpServletRequest req) throws IOException {
        List<AttachEntity> list = new ArrayList<AttachEntity>();
        for (MultipartFile file : files) {
            if (file.getSize() > SettingData.MAX_FILE_SIZE) {
                continue;
            }

            // 传输文件
            String fileName = file.getOriginalFilename();
            String filePath = pathHelper.getTempPath() + File.separator + fileName;
            File newFile = new File(filePath);
            file.transferTo(newFile);
            double sizes = FileHelper.sizeToMb(file.getSize());

            // 获取MD5
            String md5 = FileHelper.getFileMd5(filePath);
            AttachEntity entity = attachService.selectByGuid(md5);

            AttachEntity ae = getAttachEntity(ue, tabName, eventid, fileName, md5, sizes);
            if (entity != null) {
                ae.setPath(entity.getPath());

                String oldPath = pathHelper.getConfig().getUploadPath() + File.separator + ae.getPath();
                File f = new File(oldPath);
                if (!f.exists() || f.isDirectory()) {
                    newFile.renameTo(new File(oldPath));
                } else {
                    newFile.delete();
                }
            } else {
                String targetPath = pathHelper.getConfig().getUploadPath() + File.separator + ae.getPath();
                newFile.renameTo(new File(targetPath));
            }

            list.add(ae);
        }

        return attachService.inserts(list);
    }

    /**
     * 获取附件实体类
     */
    protected AttachEntity getAttachEntity(UserEntity ue, String tabName, String eventid, String fileName, String md5, double sizes) {
        AttachEntity entity = new AttachEntity();
        entity.setTab(tabName);
        entity.setTabGuid(eventid);
        entity.setName(fileName);
        entity.setGuid(md5);
        String subPath = PathHelper.getUploadPath() + File.separator + md5 + FileHelper.getExtension(fileName);
        entity.setPath(subPath);
        entity.setSizes(sizes);
        if (ue != null) {
            entity.setCreateUser(ue.getId());
        }

        return entity;
    }
}