using System;
using System.Collections.Generic;
using BITKit.StateMachine;
using UnityEngine;

namespace BITKit.Entities.Player
{
	/// <summary>
	/// 基于状态机的玩家组件
	/// </summary>
	/// <typeparam name="T">状态,继承于<see cref="IState"/></typeparam>
	public abstract class StateBasedPlayerBehavior<T> : EntityPlayerBehavior,IStateMachine<T> where T :  IState
	{
		[SerializeField] private MonoStateMachine<T> stateMachine;
		public override void OnAwake()
		{
			stateMachine?.Initialize();
			base.OnAwake();
		}

		public bool Enabled
		{
			get => stateMachine.Enabled;
			set => stateMachine.Enabled = value;
		}

		public T CurrentState
		{
			get => stateMachine.CurrentState;
			set => stateMachine.CurrentState = value;
		}

		public event Action<T, T> OnStateChanged
		{
			add => stateMachine.OnStateChanged += value;
			remove => stateMachine.OnStateChanged -= value;
		}

		public IDictionary<Type, T> StateDictionary => stateMachine.StateDictionary;

        void IStateMachine<T>.Initialize()
		{
			stateMachine.Initialize();
		}

		public void UpdateState(float deltaTime)
		{
			stateMachine.UpdateState(deltaTime);
		}

		public void DisposeState()
		{
			stateMachine.DisposeState();
		}

		public void TransitionState<State>() where State : T
		{
			stateMachine.TransitionState<State>();
		}

		public void TransitionState(T state)
		{
			stateMachine.TransitionState(state);
		}
	}
}