package com.mzl.flower.service;

import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.mzl.flower.config.OssProperties;
import com.mzl.flower.utils.UUIDGenerator;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.io.InputStream;

@Service
@Transactional
public class UploadService {

    @Autowired
    private OssProperties ossProperties;

    public String upload(InputStream inputStream, String fileName) {
        //获取阿里云存储相关常量
        String endPoint= ossProperties.getEndpoint();
        String accessKeyId = ossProperties.getKeyid();
        String accessKeySecret = ossProperties.getKeysecret();
        String bucketName = ossProperties.getBucketname();
        try {
            //创建OssClient实例
            OSS ossClient = new OSSClientBuilder().build(endPoint, accessKeyId, accessKeySecret);

            //获取文件名称
            String filename = fileName;
            //使文件名称唯一
            String uuid = UUIDGenerator.getUUID();
            filename = uuid + filename;
            String dir = uuid.substring(0, 2);
            filename = dir + "/" + filename;
            //调用oss方法实现上传
            //参数：bucketName；上传到oss文件路径和文件名称；上传文件输入流
            ossClient.putObject(bucketName, filename, inputStream);
            //关闭OSSclient
            ossClient.shutdown();
            // 把上传之后文件路径返回，需手动拼接上传到阿里云的oss路径
            // https://edu-mys.oss-cn-chengdu.aliyuncs.com/yy.JPG
            String url = bucketName + "." + endPoint + "/" + filename;
            return url;
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
}