using System;
using System.Threading;
using System.Threading.Tasks;
using ShrinkEventBus;

internal readonly struct PingEvent : IShrinkEvent
{
    public PingEvent(int value) => Value = value;
    public int Value { get; }
}

[ShrinkEventSubscriber]
internal sealed partial class SmokeSubscriber
{
    public int Sum { get; private set; }
    public int ThreadId { get; private set; }

    [ShrinkSubscribe]
    private void OnPing(PingEvent evt)
    {
        Sum += evt.Value;
        ThreadId = Thread.CurrentThread.ManagedThreadId;
    }
}

[ShrinkEventSubscriber(DefaultBus = "game")]
internal static partial class StaticSmokeSubscriber
{
    public static int Sum { get; set; }

    [ShrinkSubscribe]
    private static void OnPing(PingEvent evt) => Sum += evt.Value;
}

internal static class Program
{
    private static async Task<int> Main()
    {
        using var host = new ShrinkEventBusHost();
        var game = host.CreateBus(ShrinkBusKey.Game, ShrinkBusOptions.Inline());
        var workerKey = new ShrinkBusKey("worker", "smoke");
        var worker = host.CreateBus(workerKey, ShrinkBusOptions.DedicatedThread());
        var gameSubscriber = new SmokeSubscriber();
        var workerSubscriber = new SmokeSubscriber();
        var callerThread = Thread.CurrentThread.ManagedThreadId;

        using var gameBinding = host.Attach(gameSubscriber, ShrinkBusKey.Game);
        using var workerBinding = host.Attach(workerSubscriber, workerKey);
        game.Post(new PingEvent(2));
        await worker.PostAsync(new PingEvent(3));

        if (gameSubscriber.Sum != 2 || workerSubscriber.Sum != 3 || StaticSmokeSubscriber.Sum != 2 ||
            workerSubscriber.ThreadId == callerThread)
        {
            Console.Error.WriteLine("FAIL");
            return 1;
        }

        Console.WriteLine("PASS");
        return 0;
    }
}