// Original code dervied from:
// https://github.com/thelinuxlich/artemis_CSharp/blob/master/Artemis_XNA_INDEPENDENT/ComponentPoolable.cs

// --------------------------------------------------------------------------------------------------------------------
// <copyright file="ComponentPoolable.cs" company="GAMADU.COM">
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// </copyright>
// <summary>
//   Class ComponentPool-able.
// </summary>
// --------------------------------------------------------------------------------------------------------------------

using MonoGame.Extended.Collections;

namespace MonoGame.Extended.Entities
{
    public abstract class EntityComponent : IPoolable
    {
        private ReturnToPoolDelegate _returnToPoolDelegate;

        public Entity Entity { get; internal set; }

        IPoolable IPoolable.NextNode { get; set; }
        IPoolable IPoolable.PreviousNode { get; set; }

        protected EntityComponent()
        {
        }

        public virtual void Reset()
        {
        }

        void IPoolable.Initialize(ReturnToPoolDelegate returnDelegate)
        {
            Reset();
        }

        void IPoolable.Return()
        {
            Return();
        }

        internal void Return()
        {
            Reset();

            if (_returnToPoolDelegate == null)
            {
                return;
            }

            Entity = null;

            _returnToPoolDelegate.Invoke(this);
            _returnToPoolDelegate = null;
        }

        public override string ToString()
        {
            return $"Entity: {Entity}";
        }
    }
}