package cn.haodehaode.utils;

 import com.qiniu.android.http.ResponseInfo;

 import com.qiniu.android.storage.UpCompletionHandler;

 import com.qiniu.android.storage.UploadManager;

 import com.qiniu.android.utils.UrlSafeBase64;

 import org.json.JSONObject;

 import java.net.URLEncoder;

 import java.util.List;

 import javax.crypto.Mac;

 import javax.crypto.SecretKey;

 import javax.crypto.spec.SecretKeySpec;

 import cn.haodehaode.utils.upload.UploadCallBack;

 /**

  * 七牛上传工具类

  *

  * @author JALEN  c9n9m@163.com QQ:30338970 https://shop157209029.taobao.com/

  * @version V1.0

  * @Title: ${FILE_NAME}

  * @Package cn.haodehaode.utils

  * @Description: ${todo}

  * @date 15/10/31 15:32

  */

 public class LxQiniuUploadUtils {

     //七牛后台的key

     private static String AccessKey = HDConstants.QN_ACCESSKEY;

     //七牛后台的secret

     private static String SecretKey = HDConstants.QN_SECRETKEY;

     private static final String MAC_NAME = "HmacSHA1";

     private static final String ENCODING = "UTF-8";

     //unix时间戳:2065-12-31 00:00:00

     private static long delayTimes = 3029414400l;

     /**

      * 上传

      *

      * @param domain bucketName的名字

      * @param path   上传文件的路径地址

      */

     public static void uploadPic(final String domain, final String path, final String keys, final UploadCallBack callBack) {

         try {

             // 1:第一种方式 构造上传策略

             JSONObject _json = new JSONObject();

             _json.put("deadline", delayTimes);// 有效时间为一个小时

             _json.put("scope", domain);

             String _encodedPutPolicy = UrlSafeBase64.encodeToString(_json

                     .toString().getBytes());

             byte[] _sign = HmacSHA1Encrypt(_encodedPutPolicy, SecretKey);

             String _encodedSign = UrlSafeBase64.encodeToString(_sign);

             final String _uploadToken = AccessKey + ':' + _encodedSign + ':'

                     + _encodedPutPolicy;

             UploadManager uploadManager = new UploadManager();

             uploadManager.put(path, keys, _uploadToken,

                     new UpCompletionHandler() {

                         @Override

                         public void complete(String key, ResponseInfo info,

                                              JSONObject response) {

                             if (info.isOK()) {

                                 String urls = getFileUrl(domain, keys);

                                 callBack.success(urls);

                             } else

                                 callBack.fail(key, info);

                         }

                     }, null);

         } catch (Exception e) {

             e.printStackTrace();

         }

     }

     /**

      * 使用 HMAC-SHA1 签名方法对对encryptText进行签名

      *

      * @param encryptText 被签名的字符串

      * @param encryptKey  密钥

      * @return

      * @throws Exception

      */

     public static byte[] HmacSHA1Encrypt(String encryptText, String encryptKey)

             throws Exception {

         byte[] data = encryptKey.getBytes(ENCODING);

         // 根据给定的字节数组构造一个密钥,第二参数指定一个密钥算法的名称

         SecretKey secretKey = new SecretKeySpec(data, MAC_NAME);

         // 生成一个指定 Mac 算法 的 Mac 对象

         Mac mac = Mac.getInstance(MAC_NAME);

         // 用给定密钥初始化 Mac 对象

         mac.init(secretKey);

         byte[] text = encryptText.getBytes(ENCODING);

         // 完成 Mac 操作

         return mac.doFinal(text);

     }

     /**

      * 通过key获取上传的资源文件的全路径

      *

      * @param key

      * @param domain

      * @return

      */

     public static String getFileUrl(String domain, String key) {

         String url = HdUtils.transDomai2Zone(domain);

         StringBuilder sb = new StringBuilder();

         sb.append(url);

         try {

             //1:构造URL

             String encode = URLEncoder.encode(key, "UTF-8");

             sb.append(encode);

             //2:为url加上过期时间  unix时间

             sb.append("?e=" + delayTimes);//delayTimes = 1451491200

             //3:对1 2 操作后的url进行hmac-sha1签名 secrect

             String s = sb.toString();

             byte[] bytes = HmacSHA1Encrypt(s, SecretKey);

             String sign = UrlSafeBase64.encodeToString(bytes);

             //4:将accsesskey 连接起来

             sb.append("&token=" + AccessKey + ":" + sign);

         } catch (Exception e) {

             e.printStackTrace();

         }

         return sb.toString();

     }

 }