/*
 * Copyright (c) 2019.  黄钰朝
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.hyc.wechat.util;

import com.hyc.wechat.exception.ServiceException;
import com.hyc.wechat.model.po.Chat;
import com.hyc.wechat.model.po.User;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.Part;
import java.io.IOException;

import static com.hyc.wechat.util.UUIDUtils.getUUID;

/**
 * @author <a href="mailto:kobe524348@gmail.com">黄钰朝</a>
 * @program wechat
 * @description 用于上传文件
 * @date 2019-04-19 13:31
 */
public class UploadUtils {


    /**
     * 用于上传一个文件，返回该文件的文件名(写入photo文件夹)
     *
     * @return String 存储的文件名
     * @name toPhotoName
     * @notice none
     * @author <a href="mailto:kobe524348@gmail.com">黄钰朝</a>
     * @date 2019/4/19
     */
    public static String toPhotoName(Part part) throws IOException {
        String head = part.getHeader("Content-Disposition");
        String filename = getUUID() + head.substring(head.lastIndexOf("."), head.lastIndexOf("\""));
        part.write("photo/"+filename);
        return filename;
    }
    /**
     * 用于上传一个文件，返回该文件的文件名(写入file文件夹)
     *
     * @return String 存储的文件名
     * @name toFileName
     * @notice none
     * @author <a href="mailto:kobe524348@gmail.com">黄钰朝</a>
     * @date 2019/5/14
     */
    public static String toFileName(Part part) throws IOException {
        String head = part.getHeader("Content-Disposition");
        String filename = getUUID() + head.substring(head.lastIndexOf("."), head.lastIndexOf("\""));
        part.write("file/"+filename);
        return filename;
    }

}