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package org.springblade.mdm.program.service;
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import com.baomidou.mybatisplus.core.metadata.IPage;
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import lombok.AllArgsConstructor;
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import lombok.extern.slf4j.Slf4j;
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import org.apache.commons.lang3.StringUtils;
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import org.flowable.engine.HistoryService;
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import org.springblade.core.log.exception.ServiceException;
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import org.springblade.core.mp.base.BizServiceImpl;
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import org.springblade.core.mp.support.Condition;
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import org.springblade.core.oss.OssTemplate;
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import org.springblade.core.tool.utils.FileUtil;
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import org.springblade.mdm.flow.service.FlowBusinessService;
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import org.springblade.mdm.program.entity.DncBackFile;
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import org.springblade.mdm.program.entity.NcNode;
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import org.springblade.mdm.program.entity.NcNodeHis;
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import org.springblade.mdm.program.mapper.DncBackFileMapper;
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import org.springblade.mdm.program.vo.DncBackFileQueryVO;
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import org.springblade.mdm.program.vo.DncBackFileVO;
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import org.springblade.mdm.program.vo.DncSendBackFile;
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import org.springblade.mdm.utils.ZipTextFileContentUtil;
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import org.springframework.stereotype.Service;
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import org.springframework.transaction.annotation.Transactional;
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import java.io.IOException;
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import java.io.InputStream;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.nio.file.StandardOpenOption;
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import java.util.ArrayList;
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import java.util.Enumeration;
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import java.util.List;
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import java.util.zip.ZipEntry;
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/**
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* DNC回传文件处理服务
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*
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* @author yangys
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*/
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@Slf4j
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@Service
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@AllArgsConstructor
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public class DncBackFileService extends BizServiceImpl<DncBackFileMapper, DncBackFile> {
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private final NcNodeService ncNodeService;
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private final NcNodeHisService nodeHisService;
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private final OssTemplate ossTemplate;
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private final HistoryService historyService;
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private final FlowBusinessService businessService;
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public IPage<DncBackFileVO> pageQuery(DncBackFileQueryVO query) {
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IPage<DncBackFileVO> page= this.baseMapper.pageQuery(Condition.getPage(query),query);
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page.getRecords().forEach(item->{
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item.setProcessExecuted(isProcessExecuted(item.getProcessInstanceId()));
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});
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return page;
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}
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/**
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* 检查流程实例是否被执行过（通过历史记录）
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*/
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public boolean isProcessExecuted(String processInstanceId) {
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if(StringUtils.isBlank(processInstanceId)){
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//空流程实例id，说明节点已经没有了
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return true;
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}
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// 检查是否有历史任务记录
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long taskCount = historyService.createHistoricTaskInstanceQuery()
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.processInstanceId(processInstanceId)
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.count();
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//多于一个任务被处理，说明至少流转到第二个节点了
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return taskCount > 1;
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}
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/**
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* 取消流程
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* @param id 回传记录id
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*/
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@Transactional
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public void cancelProcess(long id) {
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DncBackFile backFIle = this.getById(id);
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NcNode packageNode = ncNodeService.getById(backFIle.getNcNodeId());
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//多于一个任务被处理，说明至少流转到第二个节点了
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if(isProcessExecuted(packageNode.getProcessInstanceId())){
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throw new ServiceException("流程已经开始处理，不可取消");
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}
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businessService.deleteProcessInstance(packageNode.getProcessInstanceId());
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this.baseMapper.deleteById(id);
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}
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/**
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* 获取回传记录的文件列表
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* @param id 回传记录id
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* @return
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*/
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public List<DncSendBackFile> filesById(long id) throws IOException {
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List<DncSendBackFile> fileList = new ArrayList<>();
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DncBackFile backFIle = this.getById(id);
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InputStream inputStream = this.ossTemplate.statFileStream(backFIle.getOssName());
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Path tempZipFile = createTempFile(inputStream);
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NcNodeHis packageNode = nodeHisService.getById(backFIle.getNcNodeId());
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//String targetFolder = packageNode.getName()+"-"+packageNode.getProcessEdition()+"/";
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String targetFolder = packageNode.getName()+"/";
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ZipEntry entry;
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try (java.util.zip.ZipFile zipFile = new java.util.zip.ZipFile(tempZipFile.toFile())) {
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Enumeration<? extends ZipEntry> entries = zipFile.entries();
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while(entries.hasMoreElements()) {
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entry = entries.nextElement();
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if(!entry.isDirectory() && entry.getName().startsWith(targetFolder)){
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//这里面之前时入库的文件
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DncSendBackFile file = new DncSendBackFile();
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file.setName(entry.getName().substring(targetFolder.length()));
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file.setEntryName(entry.getName());
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fileList.add(file);
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}
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}
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}
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return fileList;
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}
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Path createTempFile(InputStream inputStream) throws IOException {
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byte[] zipData = FileUtil.copyToByteArray(inputStream);
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Path tempFile = Files.createTempFile("tempzip"+System.currentTimeMillis(), ".zip");
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// 写入字节数据到临时文件
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Files.write(tempFile, zipData, StandardOpenOption.WRITE);
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return tempFile;
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}
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/**
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* 从文件夹名解析出程序包名和和工序版次
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* @param folderName 文件夹名
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* @return 结构数据
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*/
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PackageAndProcessEdition parseProgramPackageFromFolderName(String folderName){
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int index = StringUtils.lastIndexOf(folderName,'-');
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String processEditon = "";
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String temp;
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String packageName = "";
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if(index != -1){
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processEditon = folderName.substring(index+1);
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packageName = folderName.substring(0,index);
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}
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PackageAndProcessEdition result = new PackageAndProcessEdition();;
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result.setProgramPackageName(packageName);
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result.setProcessEdition(processEditon);
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return result;
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}
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/**
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* 获取历史记录中的文件内容
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* @param id 回传历史记录id
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* @param entryName 压缩包文件路径
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* @return
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*/
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public String getEntryFileContent(long id, String entryName) throws IOException {
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DncBackFile backFIle = this.getById(id);
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return ZipTextFileContentUtil.getTextContent(this.ossTemplate.statFileStream(backFIle.getOssName()),entryName);
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}
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}
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