package tqq9.lc123.cloud.app.api.utils;

import com.kingdee.bos.qinglightapp.util.SslUtils;
import kd.bos.cache.CacheFactory;
import kd.bos.cache.TempFileCache;
import kd.bos.context.RequestContext;
import kd.bos.entity.MainEntityType;
import kd.bos.fileservice.FileItem;
import kd.bos.fileservice.FileService;
import kd.bos.fileservice.FileServiceFactory;
import kd.bos.logging.Log;
import kd.bos.logging.LogFactory;
import kd.bos.servicehelper.AttachmentServiceHelper;
import kd.bos.servicehelper.MetadataServiceHelper;
import kd.bos.servicehelper.user.UserServiceHelper;
import kd.bos.util.FileNameUtils;

import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLDecoder;
import java.net.URLEncoder;
import java.text.DecimalFormat;
import java.util.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * @author lxl
 */
public class AttachmentFileUtil {

    private final static Log logger = LogFactory.getLog(AttachmentFileUtil.class);

    /**
     * 将Base64字符串转换为InputStream
     *
     * @param base64String Base64编码的字符串
     * @return InputStream对象
     * @throws IllegalArgumentException 如果Base64字符串格式无效
     */
    public static InputStream toInputStream(String base64String) {
        if (base64String == null || base64String.trim().isEmpty()) {
            return new ByteArrayInputStream(new byte[0]);
        }

        try {
            // 移除可能的空白字符和换行符
            String cleanBase64 = base64String.replaceAll("\\s+", "");

            // 解码Base64
            byte[] decodedBytes = Base64.getDecoder().decode(cleanBase64);

            // 创建InputStream
            return new ByteArrayInputStream(decodedBytes);

        } catch (IllegalArgumentException e) {
            throw new IllegalArgumentException("无效的Base64字符串", e);
        }
    }


    /**
     * @param entity      目标单据实体标识
     * @param pk          目标数据id
     * @param fileName    带存入文件名称
     * @param base64Image base64文件流
     * @param attachKey   附件面板标识
     * @throws IOException
     */
    public static Map<String, Object> saveUrlFile2Attchment( String entity, Object pk, String fileName, String base64Image, String attachKey) {
        Map<String, Object> result = new HashMap<>();
        // 示例Base64字符串

        try (InputStream sourceFile = toInputStream(base64Image)) {
            int sourceFileSize = sourceFile.available();
            // 上传文件到缓存服务器
            String tempPath = CacheFactory.getCommonCacheFactory().getTempFileCache().saveAsUrl(fileName, sourceFile, 7200);
            if (tempPath.contains("tempfile/download.do?configKey")) {
                //持久化附件到服务器
                TempFileCache cache = CacheFactory.getCommonCacheFactory().getTempFileCache();
                InputStream in = cache.getInputStream(tempPath);
                FileService service = FileServiceFactory.getAttachmentFileService();
                FileService fs = FileServiceFactory.getAttachmentFileService();
                RequestContext requestContext = RequestContext.get();
                String uuid = UUID.randomUUID().toString().replace("-", "");
                // 生成文件路径-上传附件时远程服务器需要存储文件的位置
                String pathParam = FileNameUtils.getAttachmentFileName(requestContext.getTenantId(),
                        requestContext.getAccountId(), uuid, fileName);
                FileItem fileItem = new FileItem(fileName, pathParam, in);
                // cache.remove(url);
                // 上传附件到文件服务器
                tempPath =service.upload(fileItem);


            }
            //将文件缓存中的附件文件上传到正式文件服务器
//            MainEntityType dataEntityType = MetadataServiceHelper.getDataEntityType(entity);
//            String appId = dataEntityType.getAppId();
//            String path = AttachmentServiceHelper.saveTempToFileService(tempPath, appId, entity, pk, fileName);

            //创建附件
            List<Map<String, Object>> attachItems = new ArrayList<>();
            Map<String, Object> attachItem = new HashMap<>();
            attachItem.put("name", fileName);
            attachItem.put("size", sourceFileSize);


            attachItem.put("url", tempPath);
            attachItem.put("creator", UserServiceHelper.getCurrentUserId());


            attachItem.put("lastModified", System.currentTimeMillis());
//            attachItem.put("uid", uid1);
            attachItems.add(attachItem);
            //该方法仅处理数据记录不涉及文件存储。
            AttachmentServiceHelper.upload(entity, pk, attachKey, attachItems);

        } catch (Exception e) {
            e.printStackTrace();
            logger.info("附件上传失败,堆栈信息e:", e);
            result.put("isSuccess", "false");
            result.put("msg", "上传服务器异常：" + e);
            return result;
        }

        result.put("isSuccess", "true");
        result.put("msg", "附件上传成功");
        return result;
    }

    /**
     * @param entity    目标单据实体标识
     * @param pk        目标数据id
     * @param fileUrl   待存入文件的url
     * @param fileName  带存入文件名称
     * @param fileSize  带存入文件大小
     * @param attachKey 附件面板标识
     * @throws IOException
     */
    public static Map<String, Object> saveUrlFile2Attchment(String uid1, String entity, Object pk, String fileUrl, String fileName, String fileSize, String attachKey) {
        List<Map<String, Object>> attachments = new ArrayList<>();
        Map<String, Object> attachItem = new HashMap<>();
        Map<String, Object> result = new HashMap<>();
        attachItem.put("name", fileName);
        attachItem.put("uid", uid1);
        InputStream inputStream = null;
        HttpURLConnection conn = null;
        String tempUrl = null;
        try {
//        	连接url并 获取输入流
//            fileUrl = URLEncoder.encode(fileUrl,"UTF-8");
//            fileUrl = java.net.URLDecoder.decode(fileUrl, "UTF-8");
            fileUrl = encode(fileUrl, "UTF-8");
            logger.info("fileUrl:" + fileUrl);
            URL url = new URL(fileUrl);
            //忽略证书
            SslUtils.ignoreSsl();
            conn = (HttpURLConnection) url.openConnection();
            conn.setRequestMethod("GET");
            conn.setConnectTimeout(25 * 1000);
            conn.setReadTimeout(25 * 1000);
            conn.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)");
            conn.setInstanceFollowRedirects(false);
            inputStream = conn.getInputStream();
            logger.info("inputStream -- size:" + inputStream.available());
            System.out.println("inputStream:" + inputStream);
//            inputStream =  getInputStreamFromURL(fileUrl);
            attachItem.put("size", getFileSizeByUrl(fileUrl));
//            苍穹自带
            TempFileCache cache = CacheFactory.getCommonCacheFactory().getTempFileCache();
            tempUrl = cache.saveAsFullUrl((String) attachItem.get("name"), inputStream, 600);
            logger.info("tempUrl -- inputStream -- size:" + CacheFactory.getCommonCacheFactory().getTempFileCache().getInputStream(tempUrl).available());
            System.out.println(":tempUrl" + tempUrl);
        } catch (Exception e) {
            logger.info("附件上传失败,堆栈信息:", e);
            result.put("isSuccess", "false");
            result.put("msg", "转文件流异常" + e);
            return result;
        } finally {
            try {
                if (inputStream != null) {
                    inputStream.close();
                }
            } catch (Exception e) {
                logger.info("附件上传失败,堆栈信息01:", e);
                result.put("isSuccess", "false");
                result.put("msg", "文件流关闭异常：" + e);
                conn.disconnect();
                return result;
            }
            conn.disconnect();
        }
        try {
            attachItem.put("lastModified", System.currentTimeMillis());
            MainEntityType dataEntityType = MetadataServiceHelper.getDataEntityType(entity);
            String appId = dataEntityType.getAppId();

            //上传到临时文件服务器
            String actUrl = AttachmentServiceHelper.saveTempToFileService(tempUrl, appId, entity, pk, (String) attachItem.get("name"));
            logger.info("actUrl:" + actUrl);
            System.out.println("actUrl:" + actUrl);
            TempFileCache cache = CacheFactory.getCommonCacheFactory().getTempFileCache();
            InputStream in = cache.getInputStream(tempUrl);
            FileService service = FileServiceFactory.getAttachmentFileService();
            RequestContext requestContext = RequestContext.get();
            String uuid = UUID.randomUUID().toString().replace("-", "");
            String pathParam = FileNameUtils.getAttachmentFileName(requestContext.getTenantId(),
                    requestContext.getAccountId(), uuid, fileName);
            System.out.println("pathParam" + pathParam);
            FileItem fileItem = new FileItem(fileName, pathParam, in);

            //从临时上传至 文件服务器
            String downUrl = service.upload(fileItem);
            logger.info("downUrl:" + downUrl);
            System.out.println("downUrl:" + downUrl);

            attachItem.put("url", actUrl);
            attachments.add(attachItem);
            //        绑定单据
            AttachmentServiceHelper.upload(entity, pk, attachKey, attachments);

        } catch (Exception e1) {
            logger.info("附件上传失败,堆栈信息e1:", e1);
            result.put("isSuccess", "false");
            result.put("msg", "上传服务器异常：" + e1);
            return result;
        }
        result.put("isSuccess", "true");
        result.put("msg", "附件上传成功");
        return result;
    }

    public static String ioPost(String tempUrl, String fileName, String entity, String size, String attachKey, Object pk) {
        List<Map<String, Object>> attachments = new ArrayList<>();
        Map<String, Object> attachItem = new HashMap<>();
        try {
            MainEntityType dataEntityType = MetadataServiceHelper.getDataEntityType(entity);
            String appId = dataEntityType.getAppId();

            //上传到临时文件服务器
            System.out.println(tempUrl);
            String actUrl = AttachmentServiceHelper.saveTempToFileService(tempUrl, appId, entity, pk, fileName);
            System.out.println("actUrl:" + actUrl);
            TempFileCache cache = CacheFactory.getCommonCacheFactory().getTempFileCache();
            InputStream in = cache.getInputStream(tempUrl);
            FileService service = FileServiceFactory.getAttachmentFileService();
            RequestContext requestContext = RequestContext.get();
            String uuid = UUID.randomUUID().toString().replace("-", "");
            String pathParam = FileNameUtils.getAttachmentFileName(requestContext.getTenantId(),
                    requestContext.getAccountId(), uuid, fileName);
            System.out.println("pathParam:" + pathParam);
            FileItem fileItem = new FileItem(fileName, pathParam, in);

            //从临时上传至 文件服务器
            String downUrl = service.upload(fileItem);
            System.out.println("downUrl:" + downUrl);

            attachItem.put("name", fileName);
            attachItem.put("size", size);
            attachItem.put("lastModified", System.currentTimeMillis());
            attachItem.put("url", actUrl);

            attachments.add(attachItem);
            //        绑定单据
            AttachmentServiceHelper.upload(entity, pk, attachKey, attachments);
        } catch (Exception e) {
            System.out.println(e);
            return e.toString();
        }
        return "ss";
    }

    /**
     * 根据地址获得数据的字节流并转换成大小
     *
     * @param strUrl 网络连接地址
     * @return
     */
    public static int getFileSizeByUrl(String strUrl) {
        InputStream inStream = null;
        ByteArrayOutputStream outStream = null;
        int size = 0;
        try {
            URL url = new URL(strUrl);
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            conn.setRequestMethod("GET");
            conn.setConnectTimeout(5 * 1000);
            inStream = conn.getInputStream();

            outStream = new ByteArrayOutputStream();
            byte[] buffer = new byte[1024];
            int len = 0;
            while ((len = inStream.read(buffer)) != -1) {
                outStream.write(buffer, 0, len);
            }
            byte[] bt = outStream.toByteArray();

            if (null != bt && bt.length > 0) {
                DecimalFormat df = new DecimalFormat("#");
                size = Integer.parseInt(df.format((double) bt.length));

                System.out.println("文件大小=：" + size);
            } else {
                System.out.println("没有从该连接获得内容");
            }
            inStream.close();
            outStream.close();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (inStream != null) {
                    inStream.close();
                }
                if (outStream != null) {
                    outStream.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return size;
    }

    private static InputStream getInputStreamFromURL(String urlString) throws IOException {
        URL url = null;
        try {
            url = new URL(urlString);
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            //设置超时间为3秒
            conn.setConnectTimeout(3 * 1000);
            //防止屏蔽程序抓取而返回403错误
            conn.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)");
            //得到输入流
            return conn.getInputStream();
        } catch (Exception e) {
            System.out.println(e);
        }
        return null;
    }

    /**
     * 处理url里的中文
     *
     * @param url
     * @return
     */
    private static String zhPattern = "[\\u4e00-\\u9fa5]";

    /**
     * 替换字符串卷
     *
     * @param str     被替换的字符串
     * @param charset 字符集
     * @return 替换好的
     * @throws UnsupportedEncodingException 不支持的字符集
     */
    public static String encode(String str, String charset) throws UnsupportedEncodingException {
        Pattern p = Pattern.compile(zhPattern);
        Matcher m = p.matcher(str);
        StringBuffer b = new StringBuffer();
        while (m.find()) {
            m.appendReplacement(b, URLEncoder.encode(m.group(0), charset));
        }
        m.appendTail(b);
        return b.toString();
    }

    public static void downloadFile(String fileUrl, String saveDir) throws IOException {
        URL url = new URL(fileUrl);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        connection.setRequestMethod("GET");

        int responseCode = connection.getResponseCode();
        if (responseCode == HttpURLConnection.HTTP_OK) {
            String fileName = "";
            String disposition = connection.getHeaderField("Content-Disposition");
            String contentType = connection.getContentType();

            if (disposition != null) {
                int index = disposition.indexOf("filename=");
                if (index > 0) {
                    fileName = disposition.substring(index + 10, disposition.length() - 1);
                }
            } else {
                fileUrl = URLDecoder.decode(fileUrl);//前面中文encode了，这里decode才能保持原文件名
                fileName = fileUrl.substring(fileUrl.lastIndexOf("/") + 1);
            }

            InputStream inputStream = connection.getInputStream();
            File saveFile = new File(saveDir);
            if (!saveFile.exists()) {
                saveFile.mkdirs();
            }
            String saveFilePath = saveDir + File.separator + fileName;

            FileOutputStream outputStream = new FileOutputStream(saveFilePath);

            int bytesRead;
            byte[] buffer = new byte[1024];
            while ((bytesRead = inputStream.read(buffer)) != -1) {
                outputStream.write(buffer, 0, bytesRead);
            }

            outputStream.close();
            inputStream.close();
            System.out.println(saveDir + "文件下载完成");
        } else {
            System.out.println("文件下载失败，错误码：" + responseCode + ";错误文件为" + saveDir);
        }
        connection.disconnect();
    }

}