package org.springblade.mdm.program.service;

import com.alibaba.fastjson.JSONObject;
import io.netty.util.internal.StringUtil;
import lombok.AllArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springblade.core.log.exception.ServiceException;
import org.springblade.core.mp.base.BizEntity;
import org.springblade.core.mp.base.BizServiceImpl;
import org.springblade.core.oss.OssTemplate;
import org.springblade.core.oss.model.BladeFile;
import org.springblade.core.redis.cache.BladeRedis;
import org.springblade.core.secure.utils.AuthUtil;
import org.springblade.core.tool.utils.DateUtil;
import org.springblade.core.tool.utils.FileUtil;
import org.springblade.core.tool.utils.Func;
import org.springblade.mdm.flow.entity.FlowProgramFile;
import org.springblade.mdm.flow.service.CureFlowService;
import org.springblade.mdm.flow.service.FlowCommonService;
import org.springblade.mdm.flow.service.FlowProgramFileService;
import org.springblade.mdm.program.entity.NcNode;
import org.springblade.mdm.program.entity.NcProgramExchange;
import org.springblade.mdm.program.mapper.NcProgramExchangeMapper;
import org.springblade.mdm.program.vo.DncSendBackData;
import org.springblade.mdm.utils.EntityUtil;
import org.springblade.mdm.utils.FileContentUtil;
import org.springframework.beans.BeanUtils;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.multipart.MultipartFile;

import java.io.*;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.StandardOpenOption;
import java.time.Duration;
import java.util.*;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;

/**
 * DNC回传文件处理服务
 *
 * @author yangys
 */
@Slf4j
@Service
@AllArgsConstructor
public class DNCSendBackService extends BizServiceImpl<NcProgramExchangeMapper, NcProgramExchange> {
	private final CureFlowService cureFlowService;
	private final FlowProgramFileService flowProgramFileService;
	private final NcNodeService ncNodeService;
	private final OssTemplate ossTemplate;
	private final BladeRedis bladeRedis;
	private final FlowCommonService flowCommonService;

	private String getFileKey(){
		return "dncexpfile-"+ AuthUtil.getUserId();
	}
	/**
	 * dnc回传文件上传
	 * @param file DNC回传文件
	 * @return 压缩包内程序包名的列表
	 */
	public List<DncSendBackData> dncSendBackUpload(MultipartFile file) {
		List<DncSendBackData> list;
		if(file == null || file.isEmpty()){
			throw new ServiceException("文件为空");
		}

		if(!StringUtils.endsWith(file.getOriginalFilename(),".zip")){
			throw new ServiceException("文件必须为zip包");
		}
		try {
			BladeFile bfile = ossTemplate.putFile(file);//上传，供后续入库使用
			//设置一个缓存，2小时过期
			bladeRedis.setEx(getFileKey(),bfile.getName(), Duration.ofHours(2));

			InputStream zipFileInputStream = file.getInputStream();//test

			list = parseProgramListFromZip(zipFileInputStream);

		} catch (IOException e) {
			log.error("上传dnc回传文件失败",e);
			throw new ServiceException("解析DNC回传数据失败");
		}
		return list;
	}


	/**
	 * 从压缩包 解析回传程序列表，这里解析目录即可，目录就是程序包名
	 * @param inputStream 压缩包输入流
	 * @return 回传程序列表
	 * @throws IOException 文件操作异常
	 */
	List<DncSendBackData> parseProgramListFromZip(InputStream inputStream) throws IOException {
		List<DncSendBackData> list = new ArrayList<>();
		Path tempZipFile = createTempFile(inputStream);

		List<String> fileEntryNameList = new ArrayList<>();
		List<String> dirEntryNameList = new ArrayList<>();
		try (ZipFile zipFile = new ZipFile(tempZipFile.toFile())) {

			Enumeration<? extends ZipEntry> zipEntries = zipFile.entries();
			ZipEntry entry;
			//获取所有的entry名称
			while (zipEntries.hasMoreElements()) {
				entry = zipEntries.nextElement();

				if(entry.isDirectory()){
					dirEntryNameList.add(entry.getName());
				}else{
					fileEntryNameList.add(entry.getName());
				}
			}

			NcNode programPackageNode;
			//目录列表，即程序包列表
			for(String entryName : dirEntryNameList){
				DncSendBackData progData = new DncSendBackData();
				String packageName = StringUtils.removeEnd(entryName,"/");
				progData.setProgramName(packageName);
				String statusLine = "";
				Optional<String> optFilename = fileEntryNameList.stream().filter(n -> n.startsWith(packageName)).findFirst();
				if(optFilename.isPresent()){
					entry = zipFile.getEntry(optFilename.get());
					InputStream ins = zipFile.getInputStream(entry);
					progData.setFileBackTime(DateUtil.fromInstant(entry.getLastModifiedTime().toInstant()));
					statusLine = FileContentUtil.readLineAt(ins,2);
					if(statusLine.contains("SQ")){
						//试切
						programPackageNode = ncNodeService.getLastEditionTryingProgramPackage(packageName);
					}else if(statusLine.contains("GH")){
						//固化
						programPackageNode = ncNodeService.getLastEditionCuredProgramPackage(packageName);
					}else if(statusLine.contains("PL")){
						//偏离
						programPackageNode =ncNodeService.getLastEditionDeviationProgramPackage(packageName);
					}else{
						throw new ServiceException("未找到程序文件中的状态注释");
					}
					if(programPackageNode != null) {
						progData.setId(programPackageNode.getId());
						progData.setProgramNo(programPackageNode.getProgramNo());
						list.add(progData);
					}else{
						throw new ServiceException("找不到程序包名:"+packageName+statusLine);
					}
				}else{
					throw new ServiceException(entryName+"包下未找到文件"+statusLine);
				}

			}
		}

		return list;
	}


	/**
	 * 入库回传文件,并启动固化流程
	 * @param ids id列表逗号分隔,程序包名 节点的id
	 */
	@Transactional
	public void dncFileAccept(String ids) throws IOException {
		List<Long> acceptIdList = Func.toLongList(ids);
		//
		NcProgramExchange exchange;
		String filekey = getFileKey();
		String zipFileName = bladeRedis.get(filekey);
		log.info("filekey={},文件名={}",filekey,zipFileName);

		Map<Long,List<NcNode>> programPackageSubMap = new HashMap<>();

		Map<Long,List<FlowProgramFile>> pkgIdFileMap = dealWithBackFile(zipFileName,acceptIdList);

		///List<NcNode> newProgramPackageList = updateNodeDataByDNCBackData(pkgFileName,idList,programPackageSubMap);
		//updateNodeDataByDNCBackData(pkgFileName,idList,programPackageSubMap);
		/*
		log.info("需要启动固化流程的程序包名数量:{}",newProgramPackageList.size());
		for(NcNode pkgNode :newProgramPackageList){
			exchange = new NcProgramExchange();
			exchange.setName(pkgNode.getName());
			exchange.setExchangeType(2);//回传
			exchange.setNcNodeId(pkgNode.getId());

			this.save(exchange);
		}*/
		bladeRedis.del(filekey);
		this.ossTemplate.removeFile(zipFileName);
		log.info("删除oss文件:{}",zipFileName);

		//cureFlowService.startCure(newProgramPackageList,programPackageSubMap);
		cureFlowService.startCureNew(pkgIdFileMap);

	}

	private Map<Long, List<FlowProgramFile>> dealWithBackFile(String ossFileName, List<Long> acceptIdList) throws IOException{
		Map<Long, List<FlowProgramFile>> pkgIdFileMap = new HashMap<>();

		InputStream inputStream = this.ossTemplate.statFileStream(ossFileName);
		Path tempZipFile = createTempFile(inputStream);
		List<String> entryNameList = new ArrayList<>();

		ZipEntry entry;
		try (java.util.zip.ZipFile zipFile = new java.util.zip.ZipFile(tempZipFile.toFile())) {
			Enumeration<? extends ZipEntry> entries = zipFile.entries();
			while(entries.hasMoreElements()) {
				entry = entries.nextElement();
				entryNameList.add(entry.getName());
			}
			log.info("allentrynames:{}",entryNameList);

			List<NcNode> allAcceptPackages =  this.ncNodeService.lambdaQuery().in(NcNode::getId,acceptIdList).list();
			//根据内部文件，读取和分析程序包和程序文件数据
			List<String> dirList = entryNameList.stream().filter(s -> s.endsWith("/")).toList();
			for(String dir : dirList){
				String programPackageName = StringUtils.removeEnd(dir,"/");
				Optional<NcNode> optPackageNode = allAcceptPackages.stream().filter(node -> StringUtils.equals(node.getName(),programPackageName)).findFirst();

				if(optPackageNode.isEmpty()){
					throw new ServiceException("找不到程序"+programPackageName);
				}

				NcNode packageNode = optPackageNode.get();
				if(packageNode.hasCured()) {
					throw new ServiceException(programPackageName + "已经固化，请勿重复入库。");
				}

				//检查是否在审批过程中
				//根据节点信息查询流程
				boolean active = flowCommonService.isProcessInstanceActive(packageNode.getProcessInstanceId());
				if(active){
					throw new ServiceException(programPackageName+"正在审批中，请勿重复入库。");
				}

				List<FlowProgramFile> flowFiles = new ArrayList<>();
				//查找包下的文件数据,
				entryNameList.stream().filter(s -> s.startsWith(dir)).forEach(entryName -> {
					log.info("{}下的文件：{}",dir,entryName);

					if(!entryName.endsWith("/")){
						//实际的文件
						String fileName = StringUtils.removeStart(entryName,dir);//去除文件名路径部分

						try {
							FlowProgramFile newFlowFile = new FlowProgramFile();
							newFlowFile.setProgramName(packageNode.getName());
							newFlowFile.setProcessInstanceId(null);//先置为空，启动流程后设置该值
							newFlowFile.setFileType("program");

							InputStream ins = zipFile.getInputStream(zipFile.getEntry(entryName));
							BladeFile newOssFile = ossTemplate.putFile("mdm",fileName,ins);
							newFlowFile.setOssName(newOssFile.getName());

							flowFiles.add(newFlowFile);
						} catch (IOException e) {
							throw new RuntimeException(e);
						}
					}

				});

				pkgIdFileMap.put(packageNode.getId(),flowFiles);
			}

		}

		return pkgIdFileMap;
	}

	/**
	 * 更新节点，主要是创建 程序包名 的新版本。
	 * @param pkgFileName zip文件名
	 * @param programPackageIdList 程序包名 节点的id列表
	 * @param programPackageSubMap 新的 程序包节点id -> =文件列表 map，用于回传数据
	 * @throws IOException 访问文件异常
	 */
	List<NcNode> updateNodeDataByDNCBackData(String pkgFileName, List<Long> programPackageIdList,Map<Long,List<NcNode>> programPackageSubMap) throws IOException {
		InputStream inputStream = this.ossTemplate.statFileStream(pkgFileName);
		Path tempZipFile = createTempFile(inputStream);
		List<NcNode> newProgramPackageNodeList = new ArrayList<>();
		List<String> entryNameList = new ArrayList<>();

		ZipEntry entry;
		try (java.util.zip.ZipFile zipFile = new java.util.zip.ZipFile(tempZipFile.toFile())) {
			Enumeration<? extends ZipEntry> entries = zipFile.entries();
			while(entries.hasMoreElements()) {
				entry = entries.nextElement();
				entryNameList.add(entry.getName());
			}
			log.info("allentrynames:{}",entryNameList);

			List<NcNode> allAcceptPackages =  this.ncNodeService.lambdaQuery().in(NcNode::getId,programPackageIdList).list();
			//根据内部文件，读取和分析程序包和程序文件数据
			List<String> dirList = entryNameList.stream().filter(s -> s.endsWith("/")).toList();
			for(String dir : dirList){
				String programPackageName = StringUtils.removeEnd(dir,"/");
				Optional<NcNode> optPackageNode = allAcceptPackages.stream().filter(node -> StringUtils.equals(node.getName(),programPackageName)).findFirst();

				if(optPackageNode.isEmpty()){
					throw new ServiceException("找不到程序"+programPackageName);
				}

				NcNode packageNode = optPackageNode.get();
				if(packageNode.hasCured()) {
					throw new ServiceException(programPackageName + "已经固化，请勿重复入库。");
				}

				//检查是否在审批过程中
				//根据节点信息查询流程
				boolean active = flowCommonService.isProcessInstanceActive(packageNode.getProcessInstanceId());
				if(active){
					throw new ServiceException(programPackageName+"正在审批中，请勿重复入库。");
				}

				NcNode newProgramPkg = new NcNode();
				BeanUtils.copyProperties(packageNode, newProgramPkg);
				EntityUtil.clearBaseProperties(newProgramPkg);
				newProgramPkg.setIsLastEdition(1);
				ncNodeService.save(newProgramPkg);
				newProgramPackageNodeList.add(newProgramPkg);

				//旧数据更新为老版本
				packageNode.setIsLocked(1);//旧版自动锁定
				packageNode.setIsLastEdition(0);;
				ncNodeService.updateById(packageNode);

				//List<FlowProgramFile> newFlowFiles = new ArrayList<>();
				List<NcNode> newProgramNodes = new ArrayList<>();
				//查找包下的文件数据,
				entryNameList.stream().filter(s -> s.startsWith(dir)).forEach(entryName -> {
					log.info("{}下的文件：{}",dir,entryName);
					if(!entryName.endsWith("/")){
						//实际的文件
						String fileName = StringUtils.removeStart(entryName,dir);//去除文件名路径部分
						NcNode oldProgramNode = this.ncNodeService.getLastEditionProgramFile(fileName,packageNode.getId());
						if(oldProgramNode == null){
							log.info("{}找不到程序文件",entryName);
							throw new ServiceException(programPackageName+"下找不到程序文件"+fileName);
						}

						//创建新版本的程序节点
						NcNode newProgramNode = new NcNode();
						BeanUtils.copyProperties(oldProgramNode, newProgramNode);
						EntityUtil.clearBaseProperties(newProgramNode);
						newProgramNode.setIsLastEdition(1);
						newProgramNode.setParentId(newProgramPkg.getId());
						newProgramNode.setParentIds(newProgramPkg.getParentIds()+","+newProgramPkg.getId());

						FlowProgramFile oldFlowFile = flowProgramFileService.getById(newProgramNode.getFlowProgramFileId());

						FlowProgramFile newFlowFile = new FlowProgramFile();
						BeanUtils.copyProperties(oldFlowFile, newFlowFile);
						newFlowFile.setProcessInstanceId(null);//先置为空，启动流程后设置该值
						EntityUtil.clearBaseProperties(newFlowFile);

						try {
							InputStream ins = zipFile.getInputStream(zipFile.getEntry(entryName));
							BladeFile newOssFile = ossTemplate.putFile("mdm",fileName,ins);
							newFlowFile.setOssName(newOssFile.getName());
						} catch (IOException e) {
							throw new RuntimeException(e);
						}
						newProgramNode.setFlowProgramFile(newFlowFile);
						newProgramNode.setVersionNumber(oldProgramNode.genNewVersionNumber());
						newProgramNodes.add(newProgramNode);
						//旧节点处理，咋办？如果导出工控网 重复导出呢？，isLastEdition不用设置了，因为 程序包节点 是新的
					}
				});

				programPackageSubMap.put(newProgramPkg.getId(),newProgramNodes);
			}

		}

		return newProgramPackageNodeList;
	}

	/**
	 * 创建一个临时zip文件
	 * @param inputStream 文件的输入流
	 * @return path 文件
	 * @throws IOException
	 */
	Path createTempFile(InputStream inputStream) throws IOException {
		byte[] zipData = FileUtil.copyToByteArray(inputStream);
		Path tempFile = Files.createTempFile("tempzip"+System.currentTimeMillis(), ".zip");
		// 写入字节数据到临时文件
		Files.write(tempFile, zipData, StandardOpenOption.WRITE);

		return tempFile;
	}
	void setBaseProperties(BizEntity entity, JSONObject jsonObject){
		entity.setCreateTime(jsonObject.getDate("createTime"));
		entity.setUpdateTime(jsonObject.getDate("updateTime"));
		entity.setStatus(jsonObject.getInteger("status"));
		entity.setCreateUser(jsonObject.getLong("createUser"));
		entity.setUpdateUser(jsonObject.getLong("updateUser"));
	}
	/*
	void clearBaseProperties(BizEntity entity){
		entity.setId(null);
		entity.setCreateTime(null);
		entity.setUpdateTime(null);
		entity.setStatus(null);
		entity.setCreateUser(null);
		entity.setUpdateUser(null);
	}*/
}