/*
 *      Copyright (c) 2018-2028, Chill Zhuang All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions are met:
 *
 *  Redistributions of source code must retain the above copyright notice,
 *  this list of conditions and the following disclaimer.
 *  Redistributions in binary form must reproduce the above copyright
 *  notice, this list of conditions and the following disclaimer in the
 *  documentation and/or other materials provided with the distribution.
 *  Neither the name of the dreamlu.net developer nor the names of its
 *  contributors may be used to endorse or promote products derived from
 *  this software without specific prior written permission.
 *  Author: Chill 庄骞 (smallchill@163.com)
 */
package org.sxkj.gd.common;

import org.springblade.core.tool.utils.StringUtil;
import org.springframework.mock.web.MockMultipartFile;
import org.springframework.web.multipart.MultipartFile;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;

public class GdMultipartFileUtil {

	private GdMultipartFileUtil() {
	}

	public static MultipartFile fromFile(File file, String contentType) throws IOException {
		if (file == null || !file.exists()) {
			throw new RuntimeException("文件不存在");
		}
		String fileName = file.getName();
		String finalContentType = StringUtil.isBlank(contentType) ? "application/octet-stream" : contentType;
		try (FileInputStream inputStream = new FileInputStream(file)) {
			return new MockMultipartFile(fileName, fileName, finalContentType, inputStream);
		}
	}

	public static MultipartFile fromFile(File file) throws IOException {
		return fromFile(file, "application/octet-stream");
	}
}