package com.ycl.utils;

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.ObjectMetadata;
import com.aliyun.oss.model.PutObjectResult;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;
import org.springframework.web.multipart.MultipartFile;

import java.io.ByteArrayInputStream;
import java.io.InputStream;
import java.util.Date;
import java.util.UUID;

@Component
public class AliyunUtils {
    private static String endpoint;
    private static String keyId;
    private static String keySecret;
    private static String bucketName;

    @Value("${aliyun.oss.endpoint}")
    public void setEndpoint(String endpoint) {
        AliyunUtils.endpoint = endpoint;
    }
    @Value("${aliyun.oss.keyId}")
    public void setKeyId(String keyId) {
        AliyunUtils.keyId = keyId;
    }
    @Value("${aliyun.oss.keySecret}")
    public void setKeySecret(String keySecret) {
        AliyunUtils.keySecret = keySecret;
    }
    @Value("${aliyun.oss.bucketName}")
    public void setBucketName(String bucketName) {
        AliyunUtils.bucketName = bucketName;
    }

//    public static String upload(InputStream inputStream, String orginalFileName){
//        // 创建OSSClient实例。
//        OSS ossClient = new OSSClientBuilder().build(endpoint, keyId, keySecret);
//        // 文件名
//        String fileName = UUID.randomUUID().toString();
//        //文件扩展名
//        String fileExtention = orginalFileName.substring(orginalFileName.lastIndexOf("."));
//        //最终的路径 类似avatar/2021/12/05/xxxxxxxxx.jpg
//        String objectName = fileName+fileExtention;
//        ossClient.putObject(bucketName, objectName, inputStream);
//        // 关闭OSSClient。
//        ossClient.shutdown();
//        return "https://"+bucketName+"."+endpoint+"/"+objectName;
//    }

    public String upload(MultipartFile file) {

        String accessKeyId = keyId;
        String accessKeySecret = keySecret;

        // 创建OSSClient实例。
        OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
        // 上传文件流
        try {
            // 获取文件的名称
            String fileName = file.getOriginalFilename();
            ObjectMetadata objectMetadata = new ObjectMetadata();
            objectMetadata.setContentType(getcontentType(fileName.substring(fileName.lastIndexOf("."))));
            // 调用oss的方法实现长传
            // 第一个参数 bucketName
            // 第二个参数 上传到oss的文件路径和文件名称
            ossClient.putObject(bucketName, fileName, new ByteArrayInputStream(file.getBytes()),objectMetadata);
            // 关闭OSSClient。
            ossClient.shutdown();
            // 把上传的文件路径返回 （手动拼接）
            // 这里设置图片有效时间 我设置了30年
            Date expiration = new Date(System.currentTimeMillis() + 946080000 * 1000);
            String url = ossClient.generatePresignedUrl(bucketName, fileName, expiration).toString();
            return url;
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }

    public static void delete(String link){
        if (link == null || link.equals("")) {
            return;
        }

        OSS ossClient = new OSSClientBuilder().build(endpoint, keyId, keySecret);
        try {
            ossClient.deleteObject(bucketName, link);
        } catch (OSSException oe) {
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
        } catch (ClientException ce) {
            System.out.println("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
    }


    // 实现图片的预览功能
    public static String getcontentType(String FilenameExtension) {
        if (FilenameExtension.equalsIgnoreCase(".bmp")) {
            return "image/bmp";
        }
        if (FilenameExtension.equalsIgnoreCase(".gif")) {
            return "image/gif";
        }
        if (FilenameExtension.equalsIgnoreCase(".jpeg") ||
                FilenameExtension.equalsIgnoreCase(".jpg") ||
                FilenameExtension.equalsIgnoreCase(".png")) {
            return "image/jpg";
        }
        if (FilenameExtension.equalsIgnoreCase(".html")) {
            return "text/html";
        }
        if (FilenameExtension.equalsIgnoreCase(".txt")) {
            return "text/plain";
        }
        if (FilenameExtension.equalsIgnoreCase(".vsd")) {
            return "application/vnd.visio";
        }
        if (FilenameExtension.equalsIgnoreCase(".pptx") ||
                FilenameExtension.equalsIgnoreCase(".ppt")) {
            return "application/vnd.ms-powerpoint";
        }
        if (FilenameExtension.equalsIgnoreCase(".docx") ||
                FilenameExtension.equalsIgnoreCase(".doc")) {
            return "application/msword";
        }
        if (FilenameExtension.equalsIgnoreCase(".xml")) {
            return "text/xml";
        }
        return "image/jpg";
    }



}