/**
 * BladeX Commercial License Agreement
 * Copyright (c) 2018-2099, https://bladex.cn. All rights reserved.
 * <p>
 * Use of this software is governed by the Commercial License Agreement
 * obtained after purchasing a license from BladeX.
 * <p>
 * 1. This software is for development use only under a valid license
 * from BladeX.
 * <p>
 * 2. Redistribution of this software's source code to any third party
 * without a commercial license is strictly prohibited.
 * <p>
 * 3. Licensees may copyright their own code but cannot use segments
 * from this software for such purposes. Copyright of this software
 * remains with BladeX.
 * <p>
 * Using this software signifies agreement to this License, and the software
 * must not be used for illegal purposes.
 * <p>
 * THIS SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY. The author is
 * not liable for any claims arising from secondary or illegal development.
 * <p>
 * Author: Chill Zhuang (bladejava@qq.com)
 */
package org.springblade.mdm.program.service;

import com.fasterxml.jackson.databind.ObjectMapper;
import lombok.AllArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.compress.archivers.zip.ZipArchiveEntry;
import org.apache.commons.compress.archivers.zip.ZipArchiveInputStream;
import org.apache.commons.compress.archivers.zip.ZipFile;
import org.apache.commons.compress.utils.IOUtils;
import org.apache.commons.compress.utils.SeekableInMemoryByteChannel;
import org.flowable.engine.*;
import org.springblade.core.tool.utils.FileUtil;
import org.springblade.mdm.program.vo.DncSendBackData;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;

/**
 * 工作流服务实现类
 *
 * @author Chill
 */
@Slf4j
@Service
@AllArgsConstructor
public class DncSendBackService  {

	private final RepositoryService repositoryService;
	private final RuntimeService runtimeService;
	private final HistoryService historyService;
	private final ProcessEngine processEngine;

	/**
	 * dnc回传文件上传
	 * @param file
	 * @return
	 */
	public List<DncSendBackData> dncSendBackUpload(MultipartFile file) {
		List<DncSendBackData> list=new ArrayList<>();
			try {
				String fileName = file.getOriginalFilename();
				InputStream fileInputStream = file.getInputStream();

				byte[] bytes = FileUtil.copyToByteArray(fileInputStream);
				list = parseDncZipFromByteArray(bytes);
				//TODO 解析为列表文件

				DncSendBackData dt = new DncSendBackData();
				dt.setId(1L);
				dt.setProgramName("test.nc");
				dt.setProgramNo("001");

				list.add(dt);

			} catch (IOException e) {
				log.error("上传dnc文件失败",e);
			}

		return list;
	}

	public static List<DncSendBackData> parseDncZipFromByteArray(byte[] zipData) throws IOException {
		//List<DncSendBackData> datas = new ArrayList<>();
		List<DncSendBackData> datas  = ZipFileDirectoryScanner.getFilesInDirectoryRecursive(zipData, "");



		/*
		try (ByteArrayInputStream bis = new ByteArrayInputStream(zipData);
			 ZipArchiveInputStream zis = new ZipArchiveInputStream(bis)) {


			ZipArchiveEntry entry;
			while ((entry = zis.getNextZipEntry()) != null) {
				DncSendBackData prog = new DncSendBackData();
				prog.setProgramName(entry.getName());
				if (!entry.isDirectory()) {
					System.out.println("文件名: " + entry.getName());
					System.out.println("大小: " + entry.getSize());

					// 读取文件内容到字节数组
					ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
					IOUtils.copy(zis, outputStream);
					byte[] fileContent = outputStream.toByteArray();

					// 处理文件内容...
					System.out.println("内容长度: " + fileContent.length);
				}else{
					//文件夹，读内部文件，获取文件列表

					System.out.println("文件夹程序："+entry.getName());
					List<String> children = new ArrayList<>();
					prog.setChildren(children);
				}

				datas.add(prog);
			}


		}*/
		return datas;
	}
	/**
	 * 入库回传文件
	 * @param ids
	 * @return
	 */
	public void dncFileAccept(String ids) {

	}
}

class ZipFileDirectoryScanner {

	public static List<DncSendBackData> getFilesInDirectoryRecursive(byte[] zipData, String dirPath) throws IOException {
		List<DncSendBackData> list = new ArrayList<>();

		if (!dirPath.endsWith("/")) {
			dirPath += "/";
		}

		try (SeekableInMemoryByteChannel channel = new SeekableInMemoryByteChannel(zipData);
			 ZipFile zipFile = new ZipFile(channel)) {

			Enumeration<ZipArchiveEntry> entries = zipFile.getEntries();
			while (entries.hasMoreElements()) {
				ZipArchiveEntry entry = entries.nextElement();
				String entryName = entry.getName();
				DncSendBackData d = new DncSendBackData();
				d.setProgramName(entryName);
				if(entry.isDirectory()){
					d.setHasChildren(true);
				}
				list.add(d);

				//if (entryName.startsWith(dirPath) && !entry.isDirectory()) {
				//	fileList.add(entryName);
				//}
			}
		}
		return list;
	}
}