TigerEmu/Utils/DependencyInjectionExtensions.cs

using System.Reflection;
using Microsoft.Extensions.DependencyInjection;
using Tiger.Communication.Messages.Interfaces;

namespace Tiger.Utils;

public static class DependencyInjectionExtensions
{
    public static void RegisterOnInherited<T>(this IServiceCollection services)
    {
        // Get the assembly you are interested in (this could be any Assembly)
        var assembly = Assembly.GetExecutingAssembly();

        // Get all types that implement IMessageEvent and are not abstract
        var types = assembly.GetTypes()
            .Where(t => t.GetInterfaces().Contains(typeof(T)) && !t.IsAbstract);

        // Register each type with AddSingleton
        foreach (var type in types)
        {
            services.AddSingleton(typeof(T), type);
        }
    }

}