package com.sercurityControl.proteam.util;

import lombok.extern.slf4j.Slf4j;

import java.io.*;
import java.net.URL;
import java.net.URLConnection;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import java.util.Map;

import static org.springframework.util.FileCopyUtils.BUFFER_SIZE;

@Slf4j
public class DownLoadUtil {



    public static void downFile(String filePath,String fileType){
        try{
            String savePath = "/data/vmw/queryDownload/"; // linux 系统路径
            String os = System.getProperty("os.name");

            if (os.toLowerCase().startsWith("win")) {
                savePath = "D://files/queryDownload/";
            }
            // 构造URL
            URL url = new URL(filePath);
            // 打开连接
            URLConnection con = url.openConnection();
            //设置请求超时为20s
            con.setConnectTimeout(20 * 1000);
            //文件路径不存在 则创建
            File sf = new File(savePath);
            if (!sf.exists()) {
                sf.mkdirs();
            }
            //jdk 1.7 新特性自动关闭
            try (InputStream in = con.getInputStream();
                 OutputStream out = new FileOutputStream(sf.getPath() + "\\" + "filename."+fileType)) {
                //创建缓冲区
                byte[] buff = new byte[1024];
                int n;
                // 开始读取
                while ((n = in.read(buff)) >= 0) {
                    out.write(buff, 0, n);
                }
            } catch (Exception e) {
                e.printStackTrace();
            }

        }catch (Exception e){
            log.error(e.toString(),e);
        }

    }



    public static void DownLoadFile(String url ,String fileType){
        BufferedReader in=null;
        try{
            URL realUrl = new URL(url);
            // 打开和URL之间的连接
            URLConnection connection = realUrl.openConnection();
            // 设置通用的请求属性
            connection.setRequestProperty("accept", "*/*");
            connection.setRequestProperty("connection", "Keep-Alive");
            connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            // 建立实际的连接
            connection.connect();
            // 获取所有响应头字段
            Map<String, List<String>> map = connection.getHeaderFields();
            // 遍历所有的响应头字段
            for (String key : map.keySet()) {
                System.out.println(key + "--->" + map.get(key));
            }

            Date date = new Date();
            SimpleDateFormat dateFormat= new SimpleDateFormat("yyyyMMddhhmmss");

            InputStream inputStream = connection.getInputStream();

            String videoFiles = "/data/vmw/queryDownload/"; // linux 系统路径
            String os = System.getProperty("os.name");

            if (os.toLowerCase().startsWith("win")) {
                videoFiles = "D://files/queryDownload/";
            }
          String  filesPath = videoFiles + "pictureWebFile/" + dateFormat.format(date) + "." + fileType;
            File saveFile = new File(filesPath);
            //生成文件夹
            if (!saveFile.getParentFile().exists()) {
                saveFile.getParentFile().mkdirs();
            }
            FileOutputStream outputStream = new FileOutputStream(saveFile);
            byte[] buffer = new byte[BUFFER_SIZE];
            int bytesRead = -1;
            System.out.println("Receiving data...");
            while ((bytesRead = inputStream.read(buffer)) != -1) {
                outputStream.write(buffer, 0, bytesRead);
            }
            System.out.println("Data received.");
            outputStream.close();
            inputStream.close();
            // 定义 BufferedReader输入流来读取URL的响应
             in  = new BufferedReader(new InputStreamReader(connection.getInputStream(), "utf-8"));
        }catch (Exception e){
            System.out.println("发送GET请求出现异常！" + e);
            log.error(e.toString(),e);
        }
        finally {
            try {
                if (in != null) {
                    in.close();
                }
            } catch (Exception e2) {
                e2.printStackTrace();
            }
        }


    }



}