refactor(File): Extract qiniu upload token request method

Author: Hybrid-Force

lib/file.js

@@ -502,6 +502,42 @@
       return request._thenRunCallbacks(options);
     },
 
+    /**
+     * Request Qiniu upload token
+     * @param {string} type
+     * @return {AV.Promise} Resolved with the response
+     * @private
+     */
+    _qiniuToken: function(type) {
+      var self = this;
+      //Create 16-bits uuid as qiniu key.
+      var extName;
+      if (AV._isNode) {
+        var path = require('path');
+        extName = path.extname(self._name);
+      } else {
+        var nameParts = self._name.split('.');
+        extName = '.' + nameParts[nameParts.length - 1];
+      }
+      var hexOctet = function() {
+        return Math.floor((1+Math.random())*0x10000).toString(16).substring(1);
+      };
+      var key = hexOctet() + hexOctet() + hexOctet() + hexOctet() + hexOctet()
+          + extName;
+
+      var data = {
+        key: key,
+        ACL: self._acl,
+        name:self._name,
+        mime_type: type,
+        metaData: self._metaData
+      };
+      if(type && self._metaData.mime_type == null)
+        self._metaData.mime_type = type;
+      self._qiniu_key = key;
+      return AV._request("qiniu", null, null, 'POST', data);
+    },
+
     /**
      * @callback UploadProgressCallback
      * @param {XMLHttpRequestProgressEvent} event - The progress event with 'loaded' and 'total' attributes
@@ -526,29 +562,12 @@
       if (!self._previousSave) {
         if(self._source){
           if(AV._isNode){
-            //Use qiniu sdk to upload files to qiniu.
-            var qiniu = require('qiniu');
-            var path = require('path');
             self._previousSave = self._source.then(function(base64, type) {
-              //Create 16-bits uuid as qiniu key.
-              var hexOctet = function() {
-                return Math.floor((1+Math.random())*0x10000).toString(16).substring(1);
-              };
-              var key = hexOctet() + hexOctet() + hexOctet() + hexOctet()
-                          + path.extname(self._name);
-              var data = {
-                key: key,
-                ACL: self._acl,
-                name:self._name,
-                mime_type: type,
-                metaData: self._metaData
-              };
-              if(type && self._metaData.mime_type == null)
-                self._metaData.mime_type = type;
-              self._qiniu_key = key;
               self._base64 = base64;
-              return AV._request("qiniu", null, null, 'POST', data);
+              return self._qiniuToken(type);
             }).then(function(response) {
+              //Use qiniu sdk to upload files to qiniu.
+              var qiniu = require('qiniu');
               self._url = response.url;
               self._bucket = response.bucket;
               self.id = response.objectId;
@@ -573,27 +592,9 @@
               return promise;
             });
           } else if (this._isBlob) {
-
             self._previousSave = self._source.then(function(blob, type) {
-              //Create 16-bits uuid as qiniu key.
-              var hexOctet = function() {
-                return Math.floor((1+Math.random())*0x10000).toString(16).substring(1);
-              };
-              var nameParts = self._name.split('.');
-              var key = hexOctet() + hexOctet() + hexOctet() + hexOctet() + hexOctet()
-                  + '.' + nameParts[nameParts.length - 1];
-              var data = {
-                key: key,
-                ACL: self._acl,
-                name:self._name,
-                mime_type: type,
-                metaData: self._metaData
-              };
-              if(type && self._metaData.mime_type == null)
-                self._metaData.mime_type = type;
-              self._qiniu_key = key;
               self._blob = blob;
-              return AV._request("qiniu", null, null, 'POST', data);
+              return self._qiniuToken(type);
             }).then(function(response) {
               self._url = response.url;
               self._bucket = response.bucket;