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) 
    {
        var assembly = Assembly.GetExecutingAssembly();
        IEnumerable<Type> types;

        if (typeof(T).IsInterface)
        {
            types = assembly.GetTypes()
                .Where(t => t.GetInterfaces().Contains(typeof(T)) && !t.IsAbstract);
        }
        else
        {
            types = assembly.GetTypes().Where(t => t.BaseType == typeof(T));
        }

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

}