From d643c323b37535c79b4cf2299d9a80a1563b3119 Mon Sep 17 00:00:00 2001
From: Mikhail Shabanov <dr.mboga@yahoo.com>
Date: Thu, 12 Mar 2020 19:44:41 +0100
Subject: [PATCH] Clan info with caching

---
 .../ObjectTypes/PlayerClanInfoObjectType.cs   | 20 +++++++++++++------
 WotBlitzStatistics.GraphQl/Startup.cs         |  3 +++
 .../WotBlitzStatistics.GraphQl.csproj         | 10 ++++++----
 3 files changed, 23 insertions(+), 10 deletions(-)

diff --git a/WotBlitzStatistics.GraphQl/ObjectTypes/PlayerClanInfoObjectType.cs b/WotBlitzStatistics.GraphQl/ObjectTypes/PlayerClanInfoObjectType.cs
index 3650d20..b4ccdfc 100644
--- a/WotBlitzStatistics.GraphQl/ObjectTypes/PlayerClanInfoObjectType.cs
+++ b/WotBlitzStatistics.GraphQl/ObjectTypes/PlayerClanInfoObjectType.cs
@@ -1,4 +1,7 @@
-using HotChocolate.Types;
+using System.Threading;
+using GreenDonut;
+using HotChocolate.Resolvers;
+using HotChocolate.Types;
 using WotBlitzStatisticsPro.WgApiClient;
 using WotBlitzStatisticsPro.WgApiClient.Model;
 
@@ -10,10 +13,15 @@ namespace WotBlitzStatistics.GraphQl.ObjectTypes
         {
 			// ToDo: Cache clan info!
 			// https://hotchocolate.io/docs/dataloaders
-			descriptor.Field("clanInfo")
-                .Resolver(c => c.Service<IWargamingApiClient>()
-                    .GetClanInfo(c.Parent<ClanAccountInfo>().ClanId.Value));
-
-		}
+            descriptor.Field("clanInfo")
+                .Resolver(c =>
+                {
+                    var warGamingClient = c.Service<IWargamingApiClient>();
+                    var clanDataLoader = c.CacheDataLoader<long, ClanInfo>(
+                        "clanInfoById",
+                        clanId => warGamingClient.GetClanInfo(clanId));
+                    return clanDataLoader.LoadAsync(c.Parent<ClanAccountInfo>().ClanId.Value);
+                });
+        }
 	}
 }
diff --git a/WotBlitzStatistics.GraphQl/Startup.cs b/WotBlitzStatistics.GraphQl/Startup.cs
index 017a79a..82c6d7c 100644
--- a/WotBlitzStatistics.GraphQl/Startup.cs
+++ b/WotBlitzStatistics.GraphQl/Startup.cs
@@ -30,6 +30,9 @@ namespace WotBlitzStatistics.GraphQl
 			services.AddSingleton<IWargamingApiSettings>(wgApiConfig);
 			services.AddHttpClient<IWargamingApiClient, WargamingApiClient>();
 
+            // this enables you to use DataLoader in your resolvers.
+            services.AddDataLoaderRegistry();
+
 			// Add GraphQL Services
 			services.AddGraphQL(sp => SchemaBuilder.New()
 				.AddServices(sp)
diff --git a/WotBlitzStatistics.GraphQl/WotBlitzStatistics.GraphQl.csproj b/WotBlitzStatistics.GraphQl/WotBlitzStatistics.GraphQl.csproj
index 0ae6de8..b55e7bc 100644
--- a/WotBlitzStatistics.GraphQl/WotBlitzStatistics.GraphQl.csproj
+++ b/WotBlitzStatistics.GraphQl/WotBlitzStatistics.GraphQl.csproj
@@ -5,10 +5,12 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="HotChocolate.AspNetCore" Version="10.3.5" />
-    <PackageReference Include="HotChocolate.AspNetCore.Authorization" Version="10.3.5" />
-    <PackageReference Include="HotChocolate.AspNetCore.Playground" Version="10.3.5" />
-    <PackageReference Include="HotChocolate.AspNetCore.Voyager" Version="10.3.5" />
+    <PackageReference Include="HotChocolate.AspNetCore" Version="10.3.6" />
+    <PackageReference Include="HotChocolate.AspNetCore.Abstractions" Version="10.3.6" />
+    <PackageReference Include="HotChocolate.AspNetCore.Authorization" Version="10.3.6" />
+    <PackageReference Include="HotChocolate.AspNetCore.Playground" Version="10.3.6" />
+    <PackageReference Include="HotChocolate.AspNetCore.Voyager" Version="10.3.6" />
+    <PackageReference Include="HotChocolate.Types.Filters" Version="10.3.6" />
     <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
   </ItemGroup>