package com.qianwen.smartman.modules.dnc.util;

import cn.hutool.core.io.IoUtil;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.commons.CommonsMultipartFile;

public final class FileUtil {
    private FileUtil() {
        throw new UnsupportedOperationException("This is a utility class and cannot be instantiated");
    }

    public static MultipartFile fileToMultipartFile(InputStream inputStream, String fileName) {
        FileItem fileItem = createFileItem(inputStream, fileName);
        return new CommonsMultipartFile(fileItem);
    }

    public static FileItem createFileItem(InputStream inputStream, String fileName) {
        FileItem item = new DiskFileItemFactory(16, (File) null).createItem("file", "multipart/form-data", true, fileName);
        try {
            IoUtil.copy(inputStream, item.getOutputStream());
        } catch (IOException e) {
            e.printStackTrace();
        }
        return item;
    }
}