src/Vegasco.Server.Api/Common/DependencyInjectionExtensions.cs

@@ -3,7 +3,9 @@ using FluentValidation;
 using Microsoft.AspNetCore.Authentication.JwtBearer;
 using Microsoft.Extensions.Options;
 using System.Diagnostics;
+using System.Globalization;
 using System.Reflection;
+using Microsoft.AspNetCore.Localization;
 using Vegasco.Server.Api.Authentication;
 using Vegasco.Server.Api.Common;
 using Vegasco.Server.Api.Persistence;
@@ -29,9 +31,9 @@ public static class DependencyInjectionExtensions
 
 	private static IServiceCollection AddMiscellaneousServices(this IServiceCollection services)
 	{
-		services.AddSingleton(sp =>
+		services.AddSingleton(() =>
 		{
-			var assemblyName = Assembly.GetExecutingAssembly()
+			string assemblyName = Assembly.GetExecutingAssembly()
 				.GetName()
 				.Name ?? "Vegasco.Server.Api";
 			return new ActivitySource(assemblyName);
@@ -50,6 +52,21 @@ public static class DependencyInjectionExtensions
 
 		services.AddHostedService<ApplyMigrationsService>();
 		
+		services.AddRequestLocalization(o =>
+		{
+			string[] cultures =
+			[
+				"en-US",
+				"en",
+				"de-DE",
+				"de"
+			];
+			
+			o.SetDefaultCulture(cultures[0])
+				.AddSupportedCultures(cultures)
+				.AddSupportedUICultures(cultures);
+		});
+
 		return services;
 	}
 

src/Vegasco.Server.Api/Common/StartupExtensions.cs

@@ -23,15 +23,7 @@ internal static class StartupExtensions
 	{
 		app.UseRequestLocalization(o =>
 		{
-			o.SupportedCultures =
-			[
-				new CultureInfo("en")
-			];
-
-			o.SupportedUICultures = o.SupportedCultures;
-
-			CultureInfo defaultCulture = o.SupportedCultures[0];
-			o.DefaultRequestCulture = new RequestCulture(defaultCulture);
+			o.ApplyCurrentCultureToResponseHeaders = true;
 		});
 
 		app.UseHttpsRedirection();