using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Events;
using UnityEngine.UI;
using DG.Tweening;
/********************************************************************************
*Create By CG
*Function 图片序列帧动画
*********************************************************************************/
namespace CG.UTility
{
    public class SpriteImgAnm : MonoBehaviour
    {
        [Header("自动播放")]
        public bool PlayAwake;
        [Header("循环播放")]
        public bool Loop = false;
        [Tooltip("序列帧的图片")]
        [SerializeField]
        private Sprite[] m_frames;
        [Header("播放总用时")]
        public float TotalTime = 2.0f;
        [Header("插入事件位置")]
        public int ActionFrame = -1;
        [SerializeField]
        private UnityEvent m_frameEvent;

        private SpriteRenderer _container;
        private Image _containerImg;
        private int _ticked;
        private bool _doAnim;

        public bool DoAnim { get { return _doAnim; } set { _doAnim = value; } }

        private void Start()
        {
            _container = GetComponent<SpriteRenderer>();
            if (_container == null)
            {
                _containerImg = GetComponent<Image>();
            }
            Init();
        }

        private void Init()
        {
            _ticked = 0;
            if (PlayAwake)
            {
                Play();
            }
            _doAnim = PlayAwake;
        }
        private void SetContainerSprite(Sprite sprite)
        {
            if (_container != null)
                _container.sprite = sprite;
            else
                _containerImg.sprite = sprite;
        }

        public void Play()
        {
            _ticked = 0;
            _doAnim = true;
            float startTimeTemp = 0.0f;
            if (Loop)
            {
                Sequence sequence = DOTween.Sequence();
                sequence.Append(DOTween.To(() => _ticked, x => _ticked = x, m_frames.Length, TotalTime).OnUpdate(() =>
                {
                    SetContainerSprite(m_frames[_ticked]);
                    if (_ticked == ActionFrame)
                        m_frameEvent.Invoke();
                })).
                Insert(0.5f, DOTween.To(() => startTimeTemp, x => startTimeTemp = x, 1.0f, 0.5f).OnComplete(() =>
                {
                    transform.GetChild(0).gameObject.SetActive(true);
                })).
                Insert(TotalTime - 0.5f, DOTween.To(() => startTimeTemp, x => startTimeTemp = x, 1.0f, 0.5f).OnPlay(() =>
                {
                    transform.GetChild(0).gameObject.SetActive(false);
                })).SetLoops(-1, LoopType.Restart).SetId("anmLoop");
            }
            else
            {                
                Sequence sequence = DOTween.Sequence();
                sequence.Append(DOTween.To(() => _ticked, x => _ticked = x, m_frames.Length, TotalTime).OnUpdate(() =>
                {
                    SetContainerSprite(m_frames[_ticked]);
                    if (_ticked == ActionFrame)
                        m_frameEvent.Invoke();
                })).
                Insert(0.5f, DOTween.To(() => startTimeTemp, x => startTimeTemp = x, 1.0f, 0.5f).OnComplete(() =>
                {
                    transform.GetChild(0).gameObject.SetActive(true);
                })).
                Insert(TotalTime-0.5f, DOTween.To(() => startTimeTemp, x => startTimeTemp = x, 1.0f, 0.5f).OnPlay(() =>
                {
                    transform.GetChild(0).gameObject.SetActive(false);
                })).SetId("anmLoop");
            }            
        }

        public void Pause()
        {
            _doAnim = false;
            DOTween.Pause("anmLoop");
        }

        public void Resume()
        {
            _doAnim = true;
            DOTween.Play("anmLoop");
        }

        public void Stop()
        {
            _ticked = 0;
            DOTween.Kill("anmLoop");
            _doAnim = false;
        }
    }
}