using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using BITFALL.Scene;
using BITKit;
using BITKit.Entities;
using Cysharp.Threading.Tasks;
using UnityEngine;

namespace BITFALL.GameMode
{
	public class BotQuotaController : MonoBehaviour
	{
		[BITCommand]
		public static void bot_quota(int quota)
		{
			Data.Set(BITConstant.Environment.bot_quota, quota);
		}
		[SerializeField] private Entity[] initialBots;
		[SerializeField] private Entity botPrefab;
		[SerializeReference,SubclassSelector] private ISpawnPointService _spawnPointService;
		private readonly List<Entity> _bots = new();
		private void Start()
		{
			foreach (var x in initialBots)
			{
				_bots.Add(x);
			}
			Data.AddListener<int>(BITConstant.Environment.bot_quota, OnBotQuotaChanged,true);
			destroyCancellationToken.Register(() =>
			{
				Data.RemoveListender<int>(BITConstant.Environment.bot_quota, OnBotQuotaChanged);
			});
		}
		private async void OnBotQuotaChanged(int quota)
		{
			try
			{
				await UniTask.SwitchToMainThread(destroyCancellationToken);
				var currentQuota=_bots.Count;
				BIT4Log.Log<BotQuotaController>($"正在更改机器人配额,当前配额为{currentQuota},目标配额为{quota}");
				while (currentQuota < quota)
				{
					Matrix4x4 spawnPoint = _spawnPointService.RequestSpawnPoint();
					var instance = Instantiate(botPrefab,spawnPoint.GetPosition(),spawnPoint.rotation);
					_bots.Add(instance);
					BIT4Log.Log<BotQuotaController>("已添加bot");
					currentQuota++;
				}
				while (currentQuota > quota)
				{
					var bot = _bots.Last();
						_bots.Remove(bot);
					Destroy(bot.gameObject);
					BIT4Log.Log<BotQuotaController>($"已移除bot:{bot.gameObject.name}");
					currentQuota--;
				}
			}
			catch (Exception e)
			{
				BIT4Log.LogException(e);
			}
		
		}
	}
}