using System.Collections.Generic;

namespace AibisDream.Kit
{
    internal interface IActionQueueCallback
    {
        void Call();
    }

    internal struct ActionQueueRecycleCallback<T> : IActionQueueCallback
    {
        public SimpleObjectPool<T> pool;
        public T action;

        public ActionQueueRecycleCallback(SimpleObjectPool<T> pool, T action)
        {
            this.pool = pool;
            this.action = action;
        }

        public void Call()
        {
            pool.Recycle(action);
            pool = null;
            action = default;
        }
    }
    
    internal class ActionQueue : Singleton<ActionQueue>
    {
        private readonly List<IActionQueueCallback> _actionQueueCallbacks = new();

        public static void AddCallback(IActionQueueCallback actionQueueCallback)
        {
            Instance._actionQueueCallbacks.Add(actionQueueCallback);
        }

        // Update is called once per frame
        private void Update()
        {
            if (_actionQueueCallbacks.Count > 0)
            {
                foreach (var actionQueueCallback in _actionQueueCallbacks)
                {
                    actionQueueCallback.Call();
                }
                
                _actionQueueCallbacks.Clear();
            }
        }
    }
}