last ...

Constants/XApiAccountEndpoint.cs

@@ -64,6 +64,12 @@ namespace xIdentityService.Constants
         SetAvatar,
         #endregion
 
+        //
+        #region Search ...
+        [StringValue("Account/OpenToSearch/Query")]
+        QueryOpenToSearchProfiles,
+        #endregion
+
         //
         #region Registration ...
         [StringValue("Account/CanRegisterUserName/{userName}")]

Interfaces/IXIdentityProvider.cs

@@ -122,6 +122,20 @@ namespace xIdentityService.Interfaces
         );
         #endregion
 
+        //
+        #region Search ...
+        /// <summary>
+        /// Query Open To Search User Profiles ...
+        /// </summary>
+        /// <param name="tokens">requested user's identifiers</param>
+        /// <param name="query">how to filter results based on <see>XQuery</see> structure</param>
+        /// <returns>an instance of <see>XQueryResult</see> of <see>XUserProfileDto</see></returns>
+        Task<XQueryResult<XUserProfileDto>> QueryOpenToSearchUsers(
+            XTokenResponse tokens,
+            XQuery query
+        );
+        #endregion
+
         //
         #region Registration ...
         Task<bool> CanRegister(string userSelectByParam);

Partial/XIdentityProvider+Search.cs

@@ -0,0 +1,57 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using xHttpService.Constants;
+using xHttpService.Extensions;
+using xIdentityModels.Dtos;
+using xIdentityModels.Models;
+using xIdentityService.Constants;
+using xModels.Dtos;
+
+namespace xIdentityService.Providers
+{
+    public partial class XIdentityProvider
+    {
+        //
+        #region Actions ...
+        /// <summary>
+        /// Query Open To Search User Profiles ...
+        /// </summary>
+        /// <param name="tokens">requested user's identifiers</param>
+        /// <param name="query">how to filter results based on <see>XQuery</see> structure</param>
+        /// <returns>an instance of <see>XQueryResult</see> of <see>XUserProfileDto</see></returns>
+        public async Task<XQueryResult<XUserProfileDto>> QueryOpenToSearchUsers(
+            XTokenResponse tokens,
+            XQuery query
+        )
+        {
+            //
+            // Validate Args ...
+            await validationProvider
+                .GroupValidationBuilder()
+                .AddNotNull(tokens, query)
+                .AddNotEmpty(tokens.AccessToken)
+                .ValidateGroupAsync();
+
+            //
+            var client = GetRestClient(tokens);
+
+            //
+            var request = GetRestRequet(XApiAccountEndpoint.QueryOpenToSearchProfiles);
+
+            //
+            // Attach XQuery to Request ...
+            request = request.AttachXQuery(query);
+
+            //
+            var response = await RunRestRequest<XQueryResult<XUserProfileDto>>(
+                client,
+                request,
+                XHttpMethod.GET
+            );
+            return response;
+        }
+        #endregion
+    }
+}