feat: DependentExtensions für extensions mit Abhängigkeiten hinzugefügt

- Methoden `AddDependentExtensions` und `TryGetByRoute` hinzugefügt, um die Konfiguration von `AuthApiParams` und das Abrufen von Deskriptoren zu ermöglichen.

src/DigitalData.Auth.API/Config/DependentExtensions.cs

@@ -0,0 +1,39 @@
+using DigitalData.Core.Abstractions.Security;
+using Microsoft.Extensions.Options;
+
+namespace DigitalData.Auth.API.Config
+{
+    public static class DependentExtensions
+    {
+        private static AuthApiParams? _authApiParams;
+
+        private static AuthApiParams AuthApiParams
+        {
+            get => _authApiParams
+                ?? throw new InvalidOperationException(
+                    $"DependentExtensions have not been added to the application or are not configured correctly. {typeof(AuthApiParams)} cannot be provided."
+                    );
+            set => _authApiParams = value;
+        }
+
+        public static IApplicationBuilder AddDependentExtensions(this IApplicationBuilder application)
+        {
+            var authApiParamOptions = application.ApplicationServices.GetRequiredService<IOptions<AuthApiParams>>();
+            _authApiParams = authApiParamOptions.Value;
+            return application;
+        }
+
+        public static bool TryGetByRoute(this IEnumerable<IAsymmetricTokenDescriptor> descriptors, string consumerRoute, out IAsymmetricTokenDescriptor descriptor)
+        {
+#pragma warning disable CS8625 // Cannot convert null literal to non-nullable reference type.
+            descriptor = null;
+#pragma warning restore CS8625 // Cannot convert null literal to non-nullable reference type.
+            if (!AuthApiParams.Consumers.TryGetByRoute(consumerRoute, out var consumer)
+                || descriptors.TryGet(AuthApiParams.Issuer, consumer.Audience, out var _descriptor))
+                return false;
+
+            descriptor = _descriptor;
+            return true;
+        }
+    }
+}

src/DigitalData.Auth.API/Program.cs

@@ -12,6 +12,7 @@ using Microsoft.IdentityModel.JsonWebTokens;
 using Microsoft.IdentityModel.Tokens;
 using Microsoft.OpenApi.Models;
 using System.Security.Claims;
+using static System.Net.Mime.MediaTypeNames;
 
 var builder = WebApplication.CreateBuilder(args);
 
@@ -116,6 +117,8 @@ builder.Services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
 
 var app = builder.Build();
 
+app.AddDependentExtensions();
+
 issuerSigningKeyInitiator = new Lazy<SecurityKey>(() =>
 {
     var factory = app.Services.GetRequiredService<ICryptoFactory>();