public sealed class EventProcessorFactory(IServiceProvider provider): IEventProcessorFactory
{
    private static readonly Lazy<Dictionary<string, Type>> processors = new(DiscoverEventProcessors);

    public IEventProcessor? GetProcessor(string eventName)
    {
        if(!processors.Value.TryGetValue(eventName, out var type))
            return null;

        return (IEventProcessor)provider.GetRequiredService(type);
    }

    private static Dictionary<string, Type> DiscoverEventProcessors()
    {
        var processorTypes = Assembly.GetExecutingAssembly().GetTypes()
            .Where(t => typeof(IEventProcessor).IsAssignableFrom(t) && t.IsClass)
            .ToArray();

        var discoverEventProcessors = new Dictionary<string, Type>();

        foreach(var processorType in processorTypes)
        {
            var handledEvents = processorType
                .GetProperty(nameof(IEventProcessor.HandledEvents))
                ?.GetValue(null) as IReadOnlyCollection<string>;

            foreach(var handledEvent in handledEvents ?? [])
                discoverEventProcessors[handledEvent] = processorType;
        }

        return discoverEventProcessors;
    }
}

public sealed class EventProcessorFactory(IServiceProvider provider): IEventProcessorFactory
{
    private static readonly Lazy<Dictionary<string, Type>> processors = new(DiscoverEventProcessors);

    public IEventProcessor? GetProcessor(string eventName)
    {
        if(!processors.Value.TryGetValue(eventName, out var type))
            return null;

        return (IEventProcessor)provider.GetRequiredService(type);
    }

    private static Dictionary<string, Type> DiscoverEventProcessors()
    {
        var processorTypes = Assembly.GetExecutingAssembly().GetTypes()
            .Where(t => typeof(IEventProcessor).IsAssignableFrom(t) && t.IsClass)
            .ToArray();

        var discoverEventProcessors = new Dictionary<string, Type>();

        foreach(var processorType in processorTypes)
        {
            var handledEvents = processorType
                .GetProperty(nameof(IEventProcessor.HandledEvents))
                ?.GetValue(null) as IReadOnlyCollection<string>;

            foreach(var handledEvent in handledEvents ?? [])
                discoverEventProcessors[handledEvent] = processorType;
        }

        return discoverEventProcessors;
    }
}

var terminal = (isInbound, isOutbound) switch
{
     (false, true) => "Inbound",
     (true, false) => "Outbound",
     _ => ""
};

var terminal = (isInbound, isOutbound) switch
{
     (false, true) => "Inbound",
     (true, false) => "Outbound",
     _ => ""
};