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package org.springblade.mdm.flow.service;
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import jakarta.servlet.ServletOutputStream;
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import jakarta.servlet.http.HttpServletResponse;
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import lombok.AllArgsConstructor;
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import lombok.extern.slf4j.Slf4j;
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import org.apache.commons.io.IOUtils;
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import org.apache.commons.lang3.StringUtils;
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import org.flowable.engine.RuntimeService;
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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.oss.OssTemplate;
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import org.springblade.core.oss.model.BladeFile;
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import org.springblade.core.tool.api.IResultCode;
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import org.springblade.core.tool.utils.Func;
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import org.springblade.mdm.flow.entity.FlowProgramFile;
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import org.springblade.mdm.flow.mapper.FlowProgramFileMapper;
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import org.springblade.mdm.flow.vo.ProgramUploadVO;
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import org.springblade.mdm.program.service.NcNodeService;
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import org.springblade.mdm.utils.FileContentUtil;
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import org.springblade.mdm.utils.ProgramFileNameCheckUtil;
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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 org.springframework.web.multipart.MultipartFile;
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import java.io.ByteArrayInputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.nio.charset.StandardCharsets;
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import java.util.List;
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/**
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* 流程程序处理，包括上传，查询展示
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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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public class FlowProgramFileService extends BizServiceImpl<FlowProgramFileMapper, FlowProgramFile> {
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@Autowired
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private OssTemplate ossTemplate;
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@Autowired
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private RuntimeService runtimeService;
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@Autowired
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private FlowCommonService flowCommonService;
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/**
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* 上传程序徐文件（编制节点调用）
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* @param uploadVO 上传对象
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*/
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public void uploadFlowProgramFile(ProgramUploadVO uploadVO) {
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FlowProgramProperties progProps= flowCommonService.getProgramProperties(uploadVO.getProcessInstanceId());
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MultipartFile file = uploadVO.getFile();
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if(file.getSize() == 0){
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throw new ServiceException("程序文件不可为空文件");
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}
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if(FlowProgramFile.TYPE_PROGRAM.equals(uploadVO.getFileType())) {
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ProgramFileNameCheckUtil.checkFilename(file.getOriginalFilename(), progProps);
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}
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BladeFile bfile = ossTemplate.putFile(file);
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FlowProgramFile progFile = new FlowProgramFile();
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progFile.setName(file.getOriginalFilename());
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progFile.setOssName(bfile.getName());
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progFile.setProcessInstanceId(uploadVO.getProcessInstanceId());
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progFile.setProgramName(NcNodeService.genProgramName(progProps.getDrawingNo(),progProps.getProcessNo()));
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progFile.setFileType(uploadVO.getFileType());
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save(progFile);
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}
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/**
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* 获取文件内容
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* @param id 文件id
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* @return 文件内容文本
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*/
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public String getFileContent(Long id) {
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String result ="";
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FlowProgramFile programFile = this.getById(id);
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String fileName = programFile.getOssName();
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try (InputStream inputStream = ossTemplate.statFileStream(fileName)) {
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ByteArrayInputStream bos = new ByteArrayInputStream(inputStream.readAllBytes());
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boolean isText= FileContentUtil.isTextFile(bos);
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if(isText){
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bos.reset();
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result = FileContentUtil.getContentFromStream(bos);
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}else{
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result = "<非文本文件>";
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}
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} catch (IOException e) {
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throw new RuntimeException(e);
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}
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return result;
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}
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/**
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* 验证程序文件的完整性，仅在编制节点使用
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* @param processInstanceId 流程实例id
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*/
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public void checkProgramFiles(String processInstanceId,boolean isPass) {
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List<FlowProgramFile> flowPrograms = this.lambdaQuery().eq(FlowProgramFile::getProcessInstanceId, processInstanceId).orderByAsc(FlowProgramFile::getCreateTime).list();
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List<FlowProgramFile> purePrograms = flowPrograms.stream().filter(FlowProgramFile::isProgram).toList();
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if(isPass && purePrograms.isEmpty()){
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throw new ServiceException("请上传程序文件");
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}
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int totalSeg = 0;
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if(!purePrograms.isEmpty()){
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FlowProgramFile progFile = purePrograms.get(0);
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totalSeg = ProgramFileNameCheckUtil.getProgramSegCount(progFile.getName());
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}
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if(totalSeg != purePrograms.size()){
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throw new ServiceException("应上传"+totalSeg+"段程序，实际上传"+flowPrograms.size()+"段");
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}
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}
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public void download(Long id, HttpServletResponse response) throws IOException {
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FlowProgramFile flowFile = this.getById(id);
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response.setHeader("Content-Disposition", "attachment; filename="+flowFile.getName());
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response.setContentType("application/octet-stream");
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try(InputStream ins = ossTemplate.statFileStream(flowFile.getOssName());){
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IOUtils.copy(ins,response.getOutputStream());
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}
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}
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}
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