Ensure check if simple di already added

Author: jjxtra

DigitalRuby.SimpleDi/DigitalRuby.SimpleDi.csproj

@@ -8,7 +8,7 @@
 		<IsPackable>true</IsPackable>
 		<Title>DigitalRuby.SimpleDi</Title>
 		<Description>Simple, declarative dependency injection and configuration using attributes - without all the boilerplate code.</Description>
-		<Version>1.0.7</Version>
+		<Version>1.0.8</Version>
 		<GeneratePackageOnBuild>True</GeneratePackageOnBuild>
 		<Company>Digital Ruby, LLC</Company>
 		<Copyright>(c) 2022-Present Digital Ruby, LLC</Copyright>

DigitalRuby.SimpleDi/ServicesHelper.cs renamed to DigitalRuby.SimpleDi/ServicesExtensions.cs

@@ -3,7 +3,7 @@
 /// <summary>
 /// Dependency injection helper for services
 /// </summary>
-public static class ServicesHelper
+public static class ServicesExtensions
 {
     /// <summary>
     /// Ensures that we don't double-call any UseSimpleDi types
@@ -19,7 +19,7 @@ private class BindingAttributeClearService : BackgroundService
         protected override Task ExecuteAsync(CancellationToken stoppingToken)
         {
             BindingAttribute.Clear();
-            ServicesHelper.typesCalledInUseSimpleDi.Clear();
+            ServicesExtensions.typesCalledInUseSimpleDi.Clear();
             return Task.CompletedTask;
         }
     }
@@ -37,6 +37,11 @@ protected override Task ExecuteAsync(CancellationToken stoppingToken)
     /// <param name="namespaceFilterRegex"></param>
     public static void AddSimpleDi(this IServiceCollection services, IConfiguration configuration, string? namespaceFilterRegex = null)
     {
+        if (services.SimpleDiAdded())
+        {
+            return;
+        }
+
         BindBindingAttributes(services, namespaceFilterRegex);
 
         // this will clear the binding attribute cache and then immediately terminate, removing itself from the list of hosted services