More changes

- Enable nullable and removed a null check
- Validate auth options on startup

Author: davidfowl

src/TodoApp/ApiModule.cs

@@ -52,7 +52,7 @@ public static IEndpointRouteBuilder MapTodoApiRoutes(this IEndpointRouteBuilder
             ITodoService service,
             CancellationToken cancellationToken) =>
             {
-                if (model is null || string.IsNullOrWhiteSpace(model.Text))
+                if (string.IsNullOrWhiteSpace(model.Text))
                 {
                     return Results.Problem("No item text specified.", statusCode: StatusCodes.Status400BadRequest);
                 }

src/TodoApp/AuthenticationModule.cs

@@ -55,6 +55,7 @@ public static IServiceCollection AddGitHubAuthentication(this IServiceCollection
                     options.ClaimActions.MapJsonKey(GitHubAvatarClaim, "avatar_url");
                 }
             })
+            .ValidateOnStart()
             .Services;
     }
 

src/TodoApp/TodoApp.csproj

@@ -6,6 +6,7 @@
     <TypeScriptCompileBlocked>true</TypeScriptCompileBlocked>
     <TypeScriptToolsVersion>latest</TypeScriptToolsVersion>
     <UserSecretsId>TodoApp</UserSecretsId>
+    <Nullable>enable</Nullable>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="AspNet.Security.OAuth.GitHub" Version="6.0.0-preview.6.21378.61" />