SoftawareCqsExtensions.cs

using softaware.Cqs;
using softaware.Cqs.DependencyInjection;

namespace Microsoft.Extensions.DependencyInjection;

/// <summary>
/// Provides extension methods for the SimpleInjector container to configure the softaware CQS infrastructure.
/// </summary>
public static class SoftawareCqsExtensions
{
    /// <summary>
    /// Adds the softaware CQS infrastructure and registers all required instances in the <paramref name="services"/> collection.
    /// </summary>
    /// <param name="services">The service collection.</param>
    /// <param name="softawareCqsTypesBuilderAction">The types builder for registering assemblies from where to find <see cref="IRequestHandler{TRequest, TResult}"/> instances.</param>
    /// <returns>The softaware CQS builder.</returns>
    public static SoftawareCqsBuilder AddSoftawareCqs(
        this IServiceCollection services,
        Action<SoftawareCqsTypesBuilder> softawareCqsTypesBuilderAction)
    {
        var typesBuilder = new SoftawareCqsTypesBuilder();
        softawareCqsTypesBuilderAction.Invoke(typesBuilder);

        services
            .Scan(scan => scan
                .FromAssemblies(typesBuilder.RegisteredAssemblies)
                .AddClasses(classes => classes.AssignableTo(typeof(IRequestHandler<,>))
                                              .Where(t => !t.GetDecoratorInfo().IsDecorator))
                .AsImplementedInterfaces()
                .WithTransientLifetime());

        services.AddTransient<IRequestProcessor, DynamicRequestProcessor>();

        return new SoftawareCqsBuilder(services);
    }
}