using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using BITKit;
using BITKit.SubSystems;
namespace BITKit.Entities
{

    public interface IDamageType { }
    public record DamageMessage
    {
        public IEntity initiator;
        public IEntity target;
        public int damage;
        public IDamagable hit;
        public Location location;
        public IDamageType damageType;
    }
    public interface IDamageCallback
    {
        void OnGetDamage(DamageMessage message);
    }
    public interface IDamagable
    {
        IEntity Entity { get; }
        Rigidbody Rigidbody { get; }
        void GiveDamage(DamageMessage message);
    }
    [SubSystemConfig(isMainThread = true)]
    public class DamageSystem : SubBITSystem
    {
        static Queue<DamageMessage> messages = new();
        public static void Excute(DamageMessage damageMessage)
        {
            messages.Enqueue(damageMessage);
        }
        public override void OnCreate()
        {
            messages.Clear();
        }
        public override void OnFixedUpdate(float deltaTime)
        {
            while (messages.TryDequeue(out var damageMessage))
            {
                damageMessage.hit?.GiveDamage(damageMessage);
                damageMessage.initiator?.Invoke(damageMessage);
                //damageMessage.initiator?.Invoke(damageMessage);
                //damageMessage.target?.Invoke(damageMessage);
            }
        }
    }
}