package com.lf.server.service.data;
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import com.lf.server.entity.ctrl.DownloadReqEntity;
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import com.lf.server.entity.data.DownloadEntity;
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import com.lf.server.entity.data.MetaFileEntity;
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import com.lf.server.entity.sys.UserEntity;
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import com.lf.server.helper.*;
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import com.lf.server.mapper.data.DownloadMapper;
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import net.lingala.zip4j.ZipFile;
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import net.lingala.zip4j.model.ZipParameters;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.stereotype.Service;
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import java.io.File;
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import java.util.ArrayList;
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import java.util.Date;
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import java.util.List;
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/**
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* 下载记录
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* @author WWW
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*/
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@Service
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public class DownloadService implements DownloadMapper {
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@Autowired
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PathHelper pathHelper;
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@Autowired
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DownloadMapper downloadMapper;
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private final static Log log = LogFactory.getLog(DownloadService.class);
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@Override
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public Integer selectCount(String name) {
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name = StringHelper.getLikeStr(name);
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return downloadMapper.selectCount(name);
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}
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@Override
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public List<DownloadEntity> selectByPage(String name, Integer limit, Integer offset) {
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name = StringHelper.getLikeStr(name);
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return downloadMapper.selectByPage(name, limit, offset);
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}
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@Override
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public Integer selectCountForUser(Integer createUser, Integer type, String name) {
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name = StringHelper.getLikeStr(name);
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return downloadMapper.selectCountForUser(createUser, type, name);
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}
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@Override
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public List<DownloadEntity> selectByPageForUser(Integer createUser, Integer type, String name, Integer limit, Integer offset) {
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name = StringHelper.getLikeStr(name);
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return downloadMapper.selectByPageForUser(createUser, type, name, limit, offset);
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}
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@Override
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public List<DownloadEntity> selectAll() {
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return downloadMapper.selectAll();
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}
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@Override
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public DownloadEntity selectById(int id) {
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return downloadMapper.selectById(id);
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}
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@Override
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public DownloadEntity selectByGuid(String guid) {
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return downloadMapper.selectByGuid(guid);
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}
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@Override
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public Integer insert(DownloadEntity entity) {
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return downloadMapper.insert(entity);
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}
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@Override
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public Integer inserts(List<DownloadEntity> list) {
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return downloadMapper.inserts(list);
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}
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@Override
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public Integer delete(int id) {
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return downloadMapper.delete(id);
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}
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@Override
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public Integer deletes(List<Integer> ids) {
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return downloadMapper.deletes(ids);
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}
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@Override
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public Integer update(DownloadEntity entity) {
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return downloadMapper.update(entity);
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}
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@Override
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public Integer updates(List<DownloadEntity> list) {
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return downloadMapper.updates(list);
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}
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/**
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* 获取下载文件路径
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*
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* @param de 下载实体类
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* @return 下载文件路径
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*/
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public String getDownloadFilePath(DownloadEntity de) {
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return pathHelper.getConfig().getDownloadPath() + File.separator + de.getUrl();
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}
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/**
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* 校验密码有效性
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*
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* @param reqEntity 请求下载实体类
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* @return 是/否有效
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*/
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public boolean validatePwd(DownloadReqEntity reqEntity) {
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try {
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String pwd = RsaHelper.decrypt(reqEntity.getPwd());
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if (StringHelper.isEmpty(pwd) || !StringHelper.checkPwdValid(pwd)) {
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return false;
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}
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reqEntity.setPwd(pwd);
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return true;
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} catch (Exception ex) {
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log.error(ex.getMessage(), ex);
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return false;
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}
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}
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/**
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* 解密
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*
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* @param pwd 加密密码
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* @return 原始密码
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*/
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public String decryptPwd(String pwd) {
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try {
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return RsaHelper.decrypt(pwd);
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} catch (Exception ex) {
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log.error(ex.getMessage(), ex);
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return null;
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}
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}
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/**
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* 打包文件
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*
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* @param ue 用户实体
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* @param list 元数据文件集合
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* @param pwd 密码
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* @return 下载文件GUID
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*/
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public String zipFiles(UserEntity ue, List<MetaFileEntity> list, String pwd) {
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rmRepeatMetaFiles(list);
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String downloadPath = pathHelper.getDownloadFullPath();
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String zipName = StringHelper.YMDHMS2_FORMAT.format(new Date()) + ".zip";
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String zipFile = downloadPath + File.separator + zipName;
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ZipFile zip = Zip4jHelper.createZipFile(zipFile, pwd);
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ZipParameters params = Zip4jHelper.getZipParams();
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addMetaFiles(zip, params, list);
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return null;
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}
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/**
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* 移除重复的元数据文件
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*/
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private void rmRepeatMetaFiles(List<MetaFileEntity> list) {
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List<String> guidList = new ArrayList<>();
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int i = 0;
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while (i < list.size()) {
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MetaFileEntity entity = list.get(i);
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if (guidList.contains(entity.getGuid())) {
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list.remove(i);
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continue;
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}
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guidList.add(entity.getGuid());
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i++;
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}
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}
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/**
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* 添加元数据文件至Zip包
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*/
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private void addMetaFiles(ZipFile zip, ZipParameters params, List<MetaFileEntity> list) {
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String uploadPath = pathHelper.getConfig().getUploadPath();
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for (MetaFileEntity entity : list) {
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String filePath = uploadPath + File.separator + entity.getPath();
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File file = new File(filePath);
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File newFile = new File(filePath.replace(entity.getGuid(), entity.getName()));
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try {
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file.renameTo(newFile);
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zip.addFile(newFile, params);
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} catch (Exception ex) {
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log.error(ex.getMessage(), ex);
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} finally {
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newFile.renameTo(file);
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}
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}
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}
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}
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