package com.kidgrow.filecenter.service.impl;

import cn.hutool.core.util.IdUtil;
import com.aliyun.oss.model.OSSObject;
import com.aliyun.oss.model.ObjectMetadata;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.kidgrow.common.constant.CommonConstant;
import com.kidgrow.common.model.PageResult;
import com.kidgrow.common.model.ResultBody;
import com.kidgrow.common.utils.DateUtil;
import com.kidgrow.common.utils.RandomValueUtils;
import com.kidgrow.common.utils.StringUtils;
import com.kidgrow.filecenter.mapper.FileMapper;
import com.kidgrow.filecenter.model.FileInfo;
import com.kidgrow.filecenter.service.IFileService;
import com.kidgrow.filecenter.util.FileUtil;
import lombok.extern.slf4j.Slf4j;
import net.coobird.thumbnailator.Thumbnails;
import org.apache.commons.collections4.MapUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.multipart.MultipartFile;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;

import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.*;

/**
 * 石家庄喜高科技有限责任公司 版权所有 © Copyright 2020<br>
 *
 * @Description: <br>
 * @Project: <br>
 * @CreateDate: Created in 2020/2/18 11:24 <br>
 * @Author: <a href="4345453@kidgrow.com">liuke</a>
 */
@Slf4j
public abstract class AbstractIFileService extends ServiceImpl<FileMapper, FileInfo> implements IFileService {
    private static final String FILE_SPLIT = ".";
    private static Logger logger = LoggerFactory.getLogger(AbstractIFileService.class);

    @Value("${kidgrow.file-server.oss.domain}")
    private  String DOMAIN;
    @Value("${spring.profiles.active}")
    private String OssPathEn;
    @Override
    public FileInfo upload(MultipartFile file) throws Exception {
        FileInfo fileInfo = FileUtil.getFileInfo(file);
        FileInfo oldFileInfo = baseMapper.selectById(fileInfo.getId());
        if (oldFileInfo != null) {
            return oldFileInfo;
        }
        if (!fileInfo.getName().contains(FILE_SPLIT)) {
            throw new IllegalArgumentException("缺少后缀名");
        }
        uploadFile(file, fileInfo);
        // 设置文件来源
        fileInfo.setSource(fileType());
        // 将文件信息保存到数据库
        baseMapper.insert(fileInfo);

        return fileInfo;
    }

    @Override
    public FileInfo upload(MultipartFile file,String imgType) throws Exception {
        FileInfo fileInfo = FileUtil.getFileInfo(file);
        FileInfo oldFileInfo = baseMapper.selectById(fileInfo.getId());
        if (oldFileInfo != null) {
            return oldFileInfo;
        }
        if (!fileInfo.getName().contains(FILE_SPLIT)) {
            throw new IllegalArgumentException("缺少后缀名");
        }
        fileInfo.setImgType(imgType); // X光片或者Logo
        uploadFile(file, fileInfo);
        // 设置文件来源
        fileInfo.setSource(fileType());
        // 将文件信息保存到数据库
        baseMapper.insert(fileInfo);

        return fileInfo;
    }

    /**
     * 文件来源
     *
     * @return
     */
    protected abstract String fileType();

    /**
     * 上传文件
     *
     * @param file
     * @param fileInfo
     */
    protected abstract void uploadFile(MultipartFile file, FileInfo fileInfo) throws Exception;
    protected abstract void fileUpLoadOss(FileInfo fileInfo,String newFilePath, InputStream fileStream);
    protected abstract String FilePath(String imgType,String folderByDate,String hospitalId,String departmentId);
    protected abstract OSSObject down(String url);

    /**
     * 删除文件
     * @param id 文件id
     */
    @Override
    public void delete(String id) {
        FileInfo fileInfo = baseMapper.selectById(id);
        if (fileInfo != null) {
            baseMapper.deleteById(fileInfo.getId());
            this.deleteFile(fileInfo);
        }
    }

    /**
     * 删除文件资源
     *
     * @param fileInfo
     * @return
     */
    protected abstract boolean deleteFile(FileInfo fileInfo);

    @Override
    public PageResult<FileInfo> findList(Map<String, Object> params) {
        Page<FileInfo> page = new Page<>(MapUtils.getInteger(params, "page"), MapUtils.getInteger(params, "limit"));
        List<FileInfo> list = baseMapper.findList(page, params);
        return PageResult.<FileInfo>builder().data(list).code(0).count(page.getTotal()).build();
    }
    /**
     * 上传图片-并缩略，其实是给文件服务器存储了两个文件 一个原文件  一个缩略图文件
     * @param file form内的文件数据
     * @param imgType 业务类型 例如logo
     * @return 返回的实体中  path字段保存的是缩略图地址
     * @throws Exception
     */
    @Override
    public FileInfo uploadForThumbnails(MultipartFile file, String imgType) throws Exception {
        FileInfo fileInfo=this.upload(file,imgType);
        List<String> lassStr= Arrays.asList("png","bmp","dib","gif","jfif","jpe","jpeg","jpg","tif","tiff","ico");
        String suffix=file.getOriginalFilename().substring(file.getOriginalFilename().lastIndexOf(".")+1);
        if(!lassStr.contains(suffix)){
            return null;
        }
        if (StringUtils.isNotBlank(fileInfo.getUrl())) {
            //生成缩略图上传
//            File nowFile= MultipartFileUtils.multipartFileToFile(file);
//            File nowFile= new File(file.getOriginalFilename());
            //暂存目录  发布后真实存在的磁盘目录
            String result = CommonConstant.TEMP_IMAGE_PATH;
            //文件扩展名
            String newFileName= RandomValueUtils.uuid()+"."+suffix;
            //生成缩略图
            Thumbnails.of(file.getInputStream()).size(CommonConstant.TH_IMG_WIDTH, CommonConstant.TH_IMG_HEIGHT).toFile(result+newFileName);
            File thuFile= new File(result+newFileName);
            if (thuFile.exists()) {
                //将生成的文件转换为流
                InputStream inputStream=new FileInputStream(thuFile);
                String folderByDate = DateUtil.formatDate(new Date());
                String filefloder=this.FilePath(imgType,folderByDate,null,null);
                FileInfo newfileInfo=new FileInfo();
                newfileInfo.setName(newFileName);
                newfileInfo.setId(IdUtil.fastSimpleUUID());
                newfileInfo.setSize(thuFile.length());
                newfileInfo.setIsImg(true);
                newfileInfo.setContentType(file.getContentType());
                newfileInfo.setSource(fileInfo.getSource());
                newfileInfo.setImgType(imgType);
                newfileInfo.setCreateTime(new Date());
                //文件上传到oss
                this.fileUpLoadOss(newfileInfo,filefloder+newFileName,inputStream);
                inputStream.close();
//                //删除暂存文件
//                MultipartFileUtils.delteTempFile(thuFile);
                boolean delete = thuFile.delete();

                // 将文件信息保存到数据库
                baseMapper.insert(newfileInfo);
                fileInfo.setPath(newfileInfo.getUrl());
            }
            return fileInfo;
        }
        else
        {
            return fileInfo;
        }
    }

    @Override
    public FileInfo baseUplaod(String file, String imgType, String hospitalId, String departmentId) {
        if(file==null||"".equals(file.trim())){
            return null;
        }
        String name=file.split(",")[0];
        file = file.split(",")[1];
        BASE64Decoder decoder = new BASE64Decoder();
        try {
            byte[] bytes = decoder.decodeBuffer(file);
            ObjectMetadata objectMeta = new ObjectMetadata();
            objectMeta.setContentLength(file.length());
            //将字节码转换成流
            InputStream input = new ByteArrayInputStream(bytes);
            String fileName= UUID.randomUUID().toString().replaceAll("-","");
            //image/jpeg;base64
            String newFileName=fileName+"."+name.substring(name.lastIndexOf("/")+1,name.lastIndexOf(";"));
            FileInfo newfileInfo=new FileInfo();
            newfileInfo.setName(newFileName);
            newfileInfo.setId(IdUtil.fastSimpleUUID());
            newfileInfo.setSize(file.length());
            newfileInfo.setIsImg(true);
            newfileInfo.setContentType("image/jpeg");
            newfileInfo.setSource("aliyun");
            newfileInfo.setImgType(imgType);
            newfileInfo.setCreateTime(new Date());
            String folderByDate =DateUtil.formatDate(new Date());
            String filePath = FilePath(imgType, folderByDate, hospitalId, departmentId);
            this.fileUpLoadOss(newfileInfo,filePath+newFileName,input);
            input.close();
            baseMapper.insert(newfileInfo);
            return newfileInfo;
        } catch (IOException e) {
            e.printStackTrace();
        }
        return null;
    }

    @Override
    public ResultBody baseDownLoad(Map<String, Object> map) throws Exception {
        String urlDiZhi=MapUtils.getString(map,"url");
        if(!urlDiZhi.contains(DOMAIN)&&!urlDiZhi.contains(DOMAIN.replace("https","http"))){
            ByteArrayOutputStream outPut = new ByteArrayOutputStream();
            byte[] data = new byte[1024];
            try {
                // 创建URL
                URL url = new URL(urlDiZhi);
                // 创建链接
                HttpURLConnection conn = (HttpURLConnection) url.openConnection();
                conn.setRequestMethod("GET");
                conn.setConnectTimeout(10 * 1000);
                InputStream inStream = conn.getInputStream();
                int len = -1;
                while ((len = inStream.read(data)) != -1) {
                    outPut.write(data, 0, len);
                }
                inStream.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
            String substring = urlDiZhi.substring(urlDiZhi.lastIndexOf(".") + 1, urlDiZhi.length());
            String str="data:image/" + substring + ";base64,";
            // 对字节数组Base64编码
            BASE64Encoder encoder = new BASE64Encoder();
            System.out.println(encoder.encode(outPut.toByteArray()));
            return ResultBody.ok().data(str+encoder.encode(outPut.toByteArray()).replaceAll("\n", "").replaceAll("\r", ""));
        }else {
            List<FileInfo> fileInfos = baseMapper.selectByMap(map);
            if (fileInfos.size() > 0) {
                FileInfo fileInfo = fileInfos.get(0);
                OSSObject down = this.down(fileInfo.getUrl().replace(DOMAIN, "").replace(DOMAIN.replace("https","http"),""));
                InputStream objectContent = down.getObjectContent();
                //返回Base64编码过的字节数组字符串
                byte[] data = null;
                // 读取图片字节数组
                try {
                    ByteArrayOutputStream swapStream = new ByteArrayOutputStream();
                    byte[] buff = new byte[100];
                    int rc = 0;
                    while ((rc = objectContent.read(buff, 0, 100)) > 0) {
                        swapStream.write(buff, 0, rc);
                    }
                    data = swapStream.toByteArray();
                } catch (IOException e) {
                    e.printStackTrace();
                } finally {
                    if (objectContent != null) {
                        try {
                            objectContent.close();
                            down.close();
                        } catch (IOException e) {
                            throw new Exception("输入流关闭异常");
                        }
                    }
                }
                String encode = "data:" + fileInfo.getContentType() + ";base64," + Base64.getEncoder().encodeToString(data);
                return ResultBody.ok().data(encode);
            } else {
                return ResultBody.failed("获取数据失败");
            }
        }
    }

    public static void main(String[] args) {

        ByteArrayOutputStream outPut = new ByteArrayOutputStream();
        byte[] data = new byte[1024];
        try {
            // 创建URL
            URL url = new URL("http://192.168.2.25:8008/123/J-1.jpg");
            // 创建链接
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            conn.setRequestMethod("GET");
            conn.setConnectTimeout(10 * 1000);
            InputStream inStream = conn.getInputStream();
            int len = -1;
            while ((len = inStream.read(data)) != -1) {
                outPut.write(data, 0, len);
            }
            inStream.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        // 对字节数组Base64编码
        BASE64Encoder encoder = new BASE64Encoder();
        System.out.println(encoder.encode(outPut.toByteArray()));

    }

    @Override
    public FileInfo byteUplaod(String fileName, InputStream inputStream,int size) throws IOException {
        String houzhui=fileName.substring(fileName.lastIndexOf(".")+1);
        String newFileName= RandomValueUtils.uuid()+"."+houzhui;
        FileInfo newfileInfo=new FileInfo();
        newfileInfo.setName(newFileName);
        newfileInfo.setId(IdUtil.fastSimpleUUID());
        newfileInfo.setSize(size);
        newfileInfo.setIsImg(false);
        newfileInfo.setContentType("byte[]");
        newfileInfo.setSource("aliyun");
        newfileInfo.setImgType(houzhui);
        newfileInfo.setCreateTime(new Date());
        this.fileUpLoadOss(newfileInfo,"pdf/"+newFileName,inputStream);
        baseMapper.insert(newfileInfo);
        inputStream.close();
        return newfileInfo;
    }

    @Override
    public FileInfo feignUploadHosIdAndDepId(MultipartFile file, String imgType, String hospitalId, String departmentId) throws Exception {
        List<String> lassStr= Arrays.asList("png","bmp","dib","gif","jfif","jpe","jpeg","jpg","tif","tiff","ico");
        String suffix=file.getOriginalFilename().substring(file.getOriginalFilename().lastIndexOf(".")+1);
        if(!lassStr.contains(suffix.toLowerCase())){
            return null;
        }
        String name = file.getOriginalFilename();
        String fileName= UUID.randomUUID().toString().replaceAll("-","");
        //image/jpeg;base64
        String newFileName=fileName+name.substring(name.lastIndexOf("."));
        FileInfo newfileInfo=new FileInfo();
        newfileInfo.setName(newFileName);
        newfileInfo.setId(IdUtil.fastSimpleUUID());
        newfileInfo.setSize(file.getSize());
        newfileInfo.setIsImg(true);
        newfileInfo.setContentType("image/jpeg");
        newfileInfo.setSource("aliyun");
        newfileInfo.setImgType(imgType);
        newfileInfo.setCreateTime(new Date());
        String folderByDate =DateUtil.formatDate(new Date());
        String filePath = FilePath(imgType, folderByDate, hospitalId, departmentId);
        InputStream inputStream = file.getInputStream();
        this.fileUpLoadOss(newfileInfo,filePath+newFileName,inputStream);
        inputStream.close();
        baseMapper.insert(newfileInfo);
        return newfileInfo;
    }
}