#nullable enable

using System.Collections;
using Cysharp.Threading.Tasks;
using NUnit.Framework;
using UnityEngine;
using UnityEngine.TestTools;

namespace ShrinkEventBus.PlayMode.Tests
{
    internal readonly struct MonoLifecycleEvent : IShrinkEvent
    {
        public MonoLifecycleEvent(int value) => Value = value;
        public int Value { get; }
    }

    [ShrinkEventSubscriber(DefaultBus = "game")]
    internal sealed class MonoLifecycleTarget : MonoBehaviour
    {
        public int Sum { get; private set; }

        [ShrinkSubscribe]
        private void OnEvent(MonoLifecycleEvent value) => Sum += value.Value;
    }

    public sealed class ShrinkMonoEventScopePlayModeTests
    {
        [UnityTest]
        public IEnumerator OnEnableAttachesAndOnDisableReleases()
        {
            var gameObject = new GameObject("ShrinkMonoEventScope-PlayMode");
            gameObject.SetActive(false);
            var target = gameObject.AddComponent<MonoLifecycleTarget>();
            gameObject.AddComponent<ShrinkMonoEventScope>();

            gameObject.SetActive(true);
            yield return null;
            yield return EventBus.PostAsync(new MonoLifecycleEvent(3)).ToCoroutine();
            Assert.AreEqual(3, target.Sum);

            gameObject.SetActive(false);
            yield return null;
            yield return EventBus.PostAsync(new MonoLifecycleEvent(5)).ToCoroutine();
            Assert.AreEqual(3, target.Sum);
            Object.Destroy(gameObject);
        }
    }
}