using BigSpace.XRCore.RunningScene;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Playables;
using UnityEngine.Video;

namespace BigSpace.XRCore.Video
{
    public class VideoPlayControll : MonoBehaviour
    {
        public string videoName;
        VideoPlayer video;
        private bool playOnAwake = false;

        public VideoData videoData = new VideoData();

        float recoveryTime = 0;

        // Start is called before the first frame update
        void Awake()
        {
            video = this.gameObject.GetComponent<VideoPlayer>();
            video.url = VideoPathUtil.GetVideoUrlPath(videoName);
            videoData.name = videoName;
            playOnAwake = video.playOnAwake;
            video.playOnAwake = false;
            video.Prepare();
            video.prepareCompleted += OnPrepared;

            RunningSceneMgr.Instance.videoCtr = this;
        }
        void OnPrepared(VideoPlayer vp)
        {
            Debug.Log("加载视频好了");
            //if (RunningSceneMgr.Instance.RecoverData == null) //无断线数据
            //{
            //    Debug.Log("没有离线视频数据");
                vp.Play();
            //}
            //else
            //{
            //    Debug.Log("有离线视频数据");
            //    StartCoroutine(WaitPlay(vp));
            //}
        }

        IEnumerator WaitPlay(VideoPlayer vp)
        {
            yield return new WaitForSeconds(0.5f);
            //有离线数据
            Play(recoveryTime);
            recoveryTime = 0;
        }


        void Update()
        {
            if (video.isPlaying)
            {
                videoData.time = (float)video.time;
                //Debug.Log("视频时间:"+ video.time);
            }
        }

        public void NormalPlay()
        {
            if (playOnAwake)
                Play();
        }

        public void RecoveryPlay(float time)
        {
            Debug.Log("有离线视频进度:" + time);
            recoveryTime = time;  //这里视频可能没有加载完成，所以要等视频加载完才能播放
        }

        private void Play(float time = 0f)
        {
            //Debug.Log("播放video走这里了:" + time + "||" + transform.parent.name + "||" + transform.parent.parent.name);
            if (time != 0) //0不需要重新播放会闪两次
            {
                Debug.Log("传来:" + time + " 视频最长多少:" + video.length);
                if (time >= video.length)
                {
                    time = (float)(video.length - 1);
                }
                video.time = time;
                video.Play();
            }
        }

        public void Stop()
        {
            if (video != null)
                video.Stop();
        }

        public void ChangePlaySpeed(bool isSpeedUp)
        {
            if (video.isPlaying)
                video.playbackSpeed = isSpeedUp ? 8 : 1;
        }

        public IEnumerator IsAllPrepared()
        {
            while (true)
            {
                var isRet = true;
                if (!video.isPrepared)
                {
                    isRet = false;
                    break;
                }
                if (!isRet)
                    yield return null;
                else
                    yield break;
            }
        }

        private void OnDestroy()
        {
            video.clip = null;
            video.prepareCompleted -= OnPrepared;
            if (RunningSceneMgr.Instance != null)
                RunningSceneMgr.Instance.videoCtr = null;
        }
    }
}