using System;
using System.Collections.Generic;
using Framework.Timer;
using Framework.Utils.SingletonTemplate;
using UnityEngine;

namespace Game.Component
{
    public class GyroscopeMgr : MgrMonoBase<GyroscopeMgr>
    {
        public Gyroscope Gyroscope => Input.gyro;
        
        protected override void InitMgr ()
        {
            this._UpdateList          = new List<Action<Vector3>> ();
        }

        private void OnEnable ()
        {
            GameUpdateMgr.Instance.AddUpdater (DoUpdate);
        }

        private void OnDisable ()
        {
            this._UpdateList?.Clear ();
            GameUpdateMgr.Instance.RemoveUpdater (DoUpdate);
        }

        private void CheckEnable ()
        {
            if (this._UpdateList is { Count: > 0 } && !Input.gyro.enabled)
            {
                Input.gyro.enabled        = true;
                Input.gyro.updateInterval = 0.1f;
                return;
            }

            if (this._UpdateList!.Count == 0 && Input.gyro.enabled)
            {
                Input.gyro.enabled = false;
                return;
            }
            
        }

        private List<Action<Vector3>> _UpdateList;
        
        private void _InvokeUpdate(List<Action<Vector3>> list)
        {
            if (list == null)
            {
                return;
            }
            for (int i = list.Count - 1; i >= 0; i--)
            {
                //在遍历时可能会出现外部操作list导致Count改变
                if (i >= list.Count)
                    continue;
                if (list[i] == null)
                {
                    list.RemoveAt(i);
                }
                else
                {
                    list[i].Invoke(Input.gyro.gravity);
                }
            }
        }
        private void DoUpdate() => this._InvokeUpdate(this._UpdateList);
        
        public void AddUpdater(Action<Vector3> updater)
        {
            this._UpdateList.Add(updater);
            CheckEnable ();
        }

        public void RemoveUpdater(Action<Vector3> updater)
        {
            this._UpdateList.Remove(updater);
            CheckEnable ();
        }
    }
}