From b1ca38f22144fda24a6e98b87be4cd91854236bd Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marek=20Fi=C5=A1era?= <mara@neptuo.com>
Date: Fri, 22 Feb 2019 23:07:04 +0100
Subject: [PATCH] #218 - Sync parallel queries for profile.

---
 src/Money.UI.Blazor/Services/UserMiddleware.cs | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/src/Money.UI.Blazor/Services/UserMiddleware.cs b/src/Money.UI.Blazor/Services/UserMiddleware.cs
index 9e953caa..cd63226e 100644
--- a/src/Money.UI.Blazor/Services/UserMiddleware.cs
+++ b/src/Money.UI.Blazor/Services/UserMiddleware.cs
@@ -15,13 +15,20 @@ internal class UserMiddleware : HttpQueryDispatcher.IMiddleware,
         IEventHandler<EmailChanged>
     {
         private ProfileModel profile;
+        private Task getProfileTask;
 
         public async Task<object> ExecuteAsync(object query, HttpQueryDispatcher dispatcher, HttpQueryDispatcher.Next next)
         {
-            if (query is GetProfile)
+            if (query is GetProfile getProfile)
             {
                 if (profile == null)
-                    profile = (ProfileModel)await next(query);
+                {
+                    if (getProfileTask == null)
+                        getProfileTask = LoadProfileAsync(getProfile, next);
+
+                    await getProfileTask;
+                    getProfileTask = null;
+                }
 
                 return profile;
             }
@@ -29,6 +36,11 @@ public async Task<object> ExecuteAsync(object query, HttpQueryDispatcher dispatc
             return await next(query);
         }
 
+        private async Task LoadProfileAsync(GetProfile query, HttpQueryDispatcher.Next next)
+        {
+            profile = (ProfileModel)await next(query);
+        }
+
         Task IEventHandler<EmailChanged>.HandleAsync(EmailChanged payload)
         {
             if (profile != null)