last works on XFile Provider by Implememnting Tag Provider and also add Global Supports for ProvidedFor and References inside File Provider ...

Interfaces/IXFileProvider.cs

@@ -22,6 +22,7 @@ namespace xFileService.Interfaces
     {
         //
         #region Props ...
+        IXFileTagProvider TagProvider { get; }
         IHubContext<XFileEntityHub> Hub { get; }
         IXFileRepository FileRepository { get; }
         IXStorageProvider StorageProvider { get; }
@@ -53,6 +54,72 @@ namespace xFileService.Interfaces
         Task<XQueryResult<XFileDto>> ToDtoQueryResult(XQueryResult<XFile> queryResult);
         #endregion
 
+        //
+        #region Tags ...
+        /// <summary>
+        /// Attach Tag to Specified File ...
+        /// </summary>
+        /// <param name="tag"></param>
+        /// <param name="id"></param>
+        /// <param name="userInfo"></param>
+        /// <returns></returns>
+        Task TagAttach(
+            string tag, 
+            Guid id,
+            XUserClaimsInfoDto userInfo = null
+        );
+
+        /// <summary>
+        /// Detach Tag fro Specified File ...
+        /// </summary>
+        /// <param name="tag"></param>
+        /// <param name="id"></param>
+        /// <param name="userInfo"></param>
+        /// <returns></returns>
+        Task TagDetach(
+            string tag, 
+            Guid id,
+            XUserClaimsInfoDto userInfo = null
+        );
+
+        /// <summary>
+        /// Attach Tags for Specified File ...
+        /// </summary>
+        /// <param name="tags"></param>
+        /// <param name="id"></param>
+        /// <param name="userInfo"></param>
+        /// <returns></returns>
+        Task TagsAttach(
+            IEnumerable<string> tags, 
+            Guid id,
+            XUserClaimsInfoDto userInfo = null
+        );
+
+        /// <summary>
+        /// Detach Tags for Specified File ...
+        /// </summary>
+        /// <param name="tags"></param>
+        /// <param name="id"></param>
+        /// <param name="userInfo"></param>
+        /// <returns></returns>
+        Task TagsDetach(
+            IEnumerable<string> tags, 
+            Guid id,
+            XUserClaimsInfoDto userInfo = null
+        );
+        
+        /// <summary>
+        /// Detach all Attached Tags for Specified File ...
+        /// </summary>
+        /// <param name="id"></param>
+        /// <param name="userInfo"></param>
+        /// <returns></returns>
+        Task TagsDetach(
+            Guid id,
+            XUserClaimsInfoDto userInfo = null
+        );
+        #endregion
+
         //
         #region Tools ...
         /// <summary>
@@ -120,6 +187,56 @@ namespace xFileService.Interfaces
         Task<XFileStreamDescriptorDto> GetFileDescriptor(string fileName);
         #endregion
 
+        //
+        #region Reference ...
+        /// <summary>
+        /// Get Reference Identifier for Specified Provider and Specified File ...
+        /// </summary>
+        /// <param name="providedFor"></param>
+        /// <param name="id"></param>
+        /// <returns></returns>
+        string GetIdentifier(
+            string providedFor, 
+            Guid id
+        );
+
+        /// <summary>
+        /// Check Specified File has Refernce to Provider ...
+        /// </summary>
+        /// <param name="providedFor"></param>
+        /// <returns></returns>
+        Task<bool> IsProvidedFor(
+            string providedFor, 
+            Guid id
+        );
+
+        /// <summary>
+        /// Add Specified Reference to Specified File ...
+        /// </summary>
+        /// <param name="providedFor"></param>
+        /// <param name="id"></param>
+        /// <param name="userInfo"></param>
+        /// <returns></returns>
+        Task AddReference(
+            string providedFor, 
+            Guid id,
+            XUserClaimsInfoDto userInfo = null
+        );
+
+        /// <summary>
+        /// Remove Specified Reference from Specified File ...
+        /// </summary>
+        /// <param name="providedFor"></param>
+        /// <param name="id"></param>
+        /// <param name="userInfo"></param>
+        /// <returns></returns>
+        Task RemoveReference(
+            string providedFor, 
+            Guid id,
+            XUserClaimsInfoDto userInfo = null
+        );
+        #endregion
+
         //
         #region Data Model ...
         /// <summary>