package com.agentdriving.driver.modular.system.util;

import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileItemFactory;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.commons.CommonsMultipartFile;

import java.io.*;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.net.URLConnection;
import java.util.UUID;

/**
 * @author zhibing.pu
 * @date 2023/5/23 18:29
 */
public class MultipartFileUtil {

    private MultipartFileUtil() { }

//    public static MultipartFile fileToMultipartFile(String path) {
//        URL url = new URL(path);
//        URLConnection urlConnection = url.openConnection();
//        InputStream inputStream = urlConnection.getInputStream();
//
//        FileItem fileItem = createFileItem(inputStream, file);
//        MultipartFile multipartFile = new CommonsMultipartFile(fileItem);
//        return multipartFile;
//    }


    public static MultipartFile fileToMultipartFile(File file) {
        FileItem fileItem = createFileItem(file);
        MultipartFile multipartFile = new CommonsMultipartFile(fileItem);
        return multipartFile;
    }

    private static FileItem createFileItem(File file) {
        FileItemFactory factory = new DiskFileItemFactory(16, null);
        FileItem item = factory.createItem("textField", "text/plain", true, file.getName());
        int bytesRead = 0;
        byte[] buffer = new byte[8192];
        try {
            FileInputStream fis = new FileInputStream(file);
            OutputStream os = item.getOutputStream();
            while ((bytesRead = fis.read(buffer, 0, 8192)) != -1) {
                os.write(buffer, 0, bytesRead);
            }
            os.close();
            fis.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return item;
    }



    private static FileItem createFileItem(InputStream inputStream, String fileName) {
        FileItemFactory factory = new DiskFileItemFactory(16, null);
        FileItem item = factory.createItem("textField", "text/plain", true, fileName);
        int bytesRead = 0;
        byte[] buffer = new byte[8192];
        try {
            OutputStream os = item.getOutputStream();
            while ((bytesRead = inputStream.read(buffer, 0, 8192)) != -1) {
                os.write(buffer, 0, bytesRead);
            }
            os.close();
            inputStream.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return item;
    }


    public static void main(String[] ages){
//        String url = "https://csxdj.obs.cn-south-1.myhuaweicloud.com:443/admin%2F%2Fstorage%2Femulated%2F0%2FAndroid%2Fdata%2Fcom.cheaper.driver%2Fcache%2Fimage%2F1681352347391.jpg";
//        MultipartFile multipartFile = MultipartFileUtil.fileToMultipartFile(url);
//        System.err.println(multipartFile.getName());
    }
}