package org.sxkj.common.utils;

import org.springframework.mock.web.MockMultipartFile;
import org.springframework.web.multipart.MultipartFile;

import java.io.*;
import java.util.UUID;

public class MultipartFileTOFileUtil {
    /**
     * MultiparFile转File
     * @param multipartFile
     * @param unzipPath
     * @return
     */
    public static File multipartFile2File(MultipartFile multipartFile, String unzipPath) {
        // 创建临时文件
        String randomFileName = UUID.randomUUID().toString();
        String tmpFileDir = unzipPath + randomFileName;
        File file = new File(tmpFileDir);
        InputStream inputStream = null;
        FileOutputStream outputStream = null;
        try {
            // 获取文件输入流
            inputStream = multipartFile.getInputStream();
            if (!file.exists()) {
                file.createNewFile();
            }
            // 创建输出流
            outputStream = new FileOutputStream(file);
            byte[] bytes = new byte[1024];
            int len;
            // 写入到创建的临时文件
            while ((len = ((InputStream) inputStream).read(bytes)) > 0) {
                outputStream.write(bytes, 0, len);
            }
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
        return file;
    }
	//压转换文件格式
	public static MultipartFile converts(File file) throws IOException {
		if (!file.exists()) {
			throw new FileNotFoundException("File not found: " + file.getAbsolutePath());
		}
		//输入文件流
		FileInputStream input = new FileInputStream(file);
		//转换成MultipartFile格式
		MultipartFile multipartFile = new MockMultipartFile("file",
			file.getName(), "application/octet-stream", input);
		return multipartFile;
	}
    public static MultipartFile convert(File file) throws IOException {
        FileInputStream input = new FileInputStream(file);
        MultipartFile multipartFile = new MockMultipartFile("file",
                file.getName(), "application/octet-stream", input);
        return multipartFile;
    }
    /**
     * 将文件转换为MultipartFile类型。
     * @param file 需要转换的文件对象，不可为null。
     * @throws IOException 如果在读取文件时发生错误，则抛出IOException。
     */
    public static void deleteFile(File file) {
        if (file.exists()) {
            file.delete();
        }
    }
}