using System;
using Cysharp.Threading.Tasks;
using UnityEngine;

namespace Stary.Evo
{
    public interface FSMIStateAsync
    {
        IFsmSystemAsync FsmSystem { get; }
        string Name { get; }
        

        //进入该状态时调用
        UniTask OnEnterAsync();

        UniTask OnEnterAsync(object param);
        
        UniTask OnEnterAsync<T>(T param);

        UniTask OnEnterAsync<T1, T2>(T1 param1, T2 param2);

        //每帧调用
        void OnUpdate();
        //退出该状态时调用

        UniTask OnExitAsync();
    }

    public abstract class AbstractFSMIStateAsync : FSMIStateAsync
    {
        public IFsmSystemAsync FsmSystem { get; }
        public string Name { get; }

        public AbstractFSMIStateAsync(IFsmSystemAsync system)
        {
            FsmSystem = system;
            Name = GetType().Name;
        }

        public virtual UniTask OnEnterAsync(object param) 
        {
            return UniTask.CompletedTask;
        }

        public virtual UniTask OnEnterAsync<T>(T param)
        {
            return UniTask.CompletedTask;
        }

        public virtual UniTask OnEnterAsync<T1, T2>(T1 param1, T2 param2)
        {
            return UniTask.CompletedTask;
        }
        public abstract UniTask OnEnterAsync();

        public virtual void OnUpdate()
        {
            // Timer += Time.deltaTime;
        }


        public abstract UniTask OnExitAsync();
    }
}