using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using BITFALL.Player.Movement;
using BITFALL.Props;
using BITKit;
using BITKit.Entities;
using BITKit.Sensors;
using UnityEngine;

namespace BITFALL.AI
{
	public class AIBehavour : EntityBehavior,IStunObject
	{
		[SerializeReference,SubclassSelector] private ISensor sensor;

		[SerializeReference, SubclassSelector] private IReference stunAnimation;
		
		private readonly Optional<IEntityMovement> grabTarget=new();
		
		[Inject]
		private IHealth _health;
		public override void OnStart()
		{
			base.OnStart();
			UnityEntity.AddListener<string>(OnCommand);
			
			_health.OnSetAlive += OnSetAlive;
		}

		private void OnSetAlive(bool obj)
		{
			if (obj) return;
            if(grabTarget.Allow)
			{
				grabTarget.Value.ExecuteCommand(new PlayerDisableMovementCommand()
				{
					LockFile = this,
					Disable = false
				});
				grabTarget.Clear();
			}
		}

		private async void OnCommand(string obj)
		{
			switch (obj)
			{
				case "Grapple":
					await sensor.Execute();
					if (destroyCancellationToken.IsCancellationRequested) return;
					var target = sensor.Get().FirstOrDefault();
					if (target && target.TryGetComponent<IEntityMovement>(out var movement))
					{
						movement.ExecuteCommand(new PlayerDisableMovementCommand()
						{
							LockFile = this,
							Disable = true,
							Duration = 2,
							Source = "<color=yellow>被抓住了</color>"
						});
						UnityEntity.Invoke(Constant.Animation.Play,"Grapple");
						grabTarget.SetValueThenAllow(movement);
					}
					break;
			}
		}

		public float Weight { get; set; }
		public event Action<float> OnWeightChanged;
		public void Stun(float distance, float duration)
		{
			if (stunAnimation is null) return;
			UnityEntity.Invoke(Constant.Animation.Play,stunAnimation.Value);
		}
	}

}