Methods to retrieve OneDrive storage ID

src/Adapter/OneDriveAdapter.php

@@ -195,6 +195,22 @@ public function listContents($directory = '', $recursive = false)
         return $result;
     }
 
+
+    public function getUserDriveMetadata() 
+    {
+        $response = $this->client->getUserDriveMetadata();
+        $responseContent = json_decode((string) $response->getBody());
+        return $responseContent;
+    }
+
+
+    public function getOneDriveStorageId() 
+    {
+        $userDriveMetadata = $this->getUserDriveMetadata();
+        return $userDriveMetadata->id;
+    }
+
+
     public function getType($path)
     {
         $metadata = $this->getMetadata($path);

src/Client/OneDriveClient.php

@@ -119,6 +119,18 @@ public function getMetadata($path)
         return $this->getResponse('GET', $url);
     }
 
+    /**
+     * @return \Psr\Http\Message\ResponseInterface
+     *
+     * @link https://dev.onedrive.com/resources/drive.htm
+     */
+    public function getUserDriveMetadata()
+    {
+        $url = self::BASE_URI.$this->getPathUserDriveMetadata();
+
+        return $this->getResponse('GET', $url);
+    }
+
     /**
      * @param string $path
      * @param string $content
@@ -389,6 +401,16 @@ private function getPathUnderRootDrive($path)
         return 'drive/root:/'.$path;
     }
 
+    /**
+     * @param string $path
+     *
+     * @return string
+     */
+    private function getPathUserDriveMetadata()
+    {
+        return 'drive';
+    }
+
     /**
      * @param string $method
      * @param string $path