using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using RenderHeads.Media.AVProVideo;
using UnityEngine.UI;
using LzFramework.UI;
using DG.Tweening;
namespace DisComputer
{
    /// <summary>
    /// 视频控制器
    /// </summary>
    public class VideoPlayer : MonoBehaviour
    {

        public MediaPlayer _mediaPlayer;

        public MediaPlayer _mediaPlayerB;


        public DisplayUGUI _mediaDisplay;

        public RectTransform _bufferedSliderRect;

        public Slider _videoSeekSlider;
        private float _setVideoSeekSliderValue;
        private bool _wasPlayingOnScrub;

        public MediaPlayer.FileLocation _location = MediaPlayer.FileLocation.RelativeToStreamingAssetsFolder;

        public string _folder = "DisVideo";
        public string[] _videoFiles = { ""};

        private int _VideoIndex = 0;

        private Image _bufferedSliderImage;



        public Button _play_btn;

        public Button _pause_btn;

        public Button _close_btn;

        public Button _full_btn;


        private MediaPlayer _loadingPlayer;
        public MediaPlayer PlayingPlayer
        {
            get
            {
                if (LoadingPlayer == _mediaPlayer)
                    return _mediaPlayerB;

                return _mediaPlayer;
            }
        }

        public MediaPlayer LoadingPlayer
        {
            get
            {
                return _loadingPlayer;
            }
        }

        private void SwapPlayers()
        {
            // Pause the previously playing video
            PlayingPlayer.Control.Pause();

            // Swap the videos
            if (LoadingPlayer == _mediaPlayer)
            {
                _loadingPlayer = _mediaPlayerB;
            }
            else
            {
                _loadingPlayer = _mediaPlayer;
            }

            // Change the displaying video
            _mediaDisplay.CurrentMediaPlayer = PlayingPlayer;
        }

        public void OnOpenVideoFile()
        {
            LoadingPlayer.m_VideoPath = System.IO.Path.Combine(_folder, _videoFiles[_VideoIndex]);
            _VideoIndex = (_VideoIndex + 1) % (_videoFiles.Length);
            if (string.IsNullOrEmpty(LoadingPlayer.m_VideoPath))
            {
                LoadingPlayer.CloseVideo();
                _VideoIndex = 0;
            }
            else
            {
                LoadingPlayer.OpenVideoFromFile(_location, LoadingPlayer.m_VideoPath);
            }

            if (_bufferedSliderRect != null)
            {
                _bufferedSliderImage = _bufferedSliderRect.GetComponent<Image>();
            }
        }

        public void OnPlayButton()
        {
            if (PlayingPlayer)
            {
                PlayingPlayer.Control.Play();
            }
        }
        public void OnPauseButton()
        {
            if (PlayingPlayer)
            {
                PlayingPlayer.Control.Pause();
            }
        }


        public void OnVideoSeekSlider()
        {
            if (PlayingPlayer && _videoSeekSlider && _videoSeekSlider.value != _setVideoSeekSliderValue)
            {
                PlayingPlayer.Control.Seek(_videoSeekSlider.value * PlayingPlayer.Info.GetDurationMs());
            }
        }

        public void OnVideoSliderDown()
        {
            if (PlayingPlayer)
            {
                _wasPlayingOnScrub = PlayingPlayer.Control.IsPlaying();
                if (_wasPlayingOnScrub)
                {
                    PlayingPlayer.Control.Pause();
                }
                OnVideoSeekSlider();
            }
        }

        public void OnVideoSliderUp()
        {
            if (PlayingPlayer && _wasPlayingOnScrub)
            {
                PlayingPlayer.Control.Play();
                _wasPlayingOnScrub = false;
            }
        }

        public void OnRewindButton()
        {
            if (PlayingPlayer)
            {
                PlayingPlayer.Control.Rewind();
            }
        }


        private void Awake()
        {
            _loadingPlayer = _mediaPlayerB;
        }


        private void OnEnable()
        {
            if (PlayingPlayer)
            {
                PlayingPlayer.Events.AddListener(OnVideoEvent);

                if (LoadingPlayer)
                {
                    LoadingPlayer.Events.AddListener(OnVideoEvent);
                }

                OnOpenVideoFile();
            }
        }

        void Start()
        {
            _full_btn.onClick.AddListener(OnClickFull);

            _close_btn.onClick.AddListener(OnClickClose);

            _play_btn.onClick.AddListener(OnClickPlay);

            _pause_btn.onClick.AddListener(OnClickPause);

        }


        private void OnDestroy()
        {
            if (LoadingPlayer)
            {
                LoadingPlayer.Events.RemoveListener(OnVideoEvent);
            }
            if (PlayingPlayer)
            {
                PlayingPlayer.Events.RemoveListener(OnVideoEvent);
            }
        }

        void Update()
        {
            if (PlayingPlayer && PlayingPlayer.Info != null && PlayingPlayer.Info.GetDurationMs() > 0f)
            {
                float time = PlayingPlayer.Control.GetCurrentTimeMs();
                float duration = PlayingPlayer.Info.GetDurationMs();
                float d = Mathf.Clamp(time / duration, 0.0f, 1.0f);

             
                _setVideoSeekSliderValue = d;
                _videoSeekSlider.value = d;

                if (_bufferedSliderRect != null)
                {
                    if (PlayingPlayer.Control.IsBuffering())
                    {
                        float t1 = 0f;
                        float t2 = PlayingPlayer.Control.GetBufferingProgress();
                        if (t2 <= 0f)
                        {
                            if (PlayingPlayer.Control.GetBufferedTimeRangeCount() > 0)
                            {
                                PlayingPlayer.Control.GetBufferedTimeRange(0, ref t1, ref t2);
                                t1 /= PlayingPlayer.Info.GetDurationMs();
                                t2 /= PlayingPlayer.Info.GetDurationMs();
                            }
                        }

                        Vector2 anchorMin = Vector2.zero;
                        Vector2 anchorMax = Vector2.one;

                        if (_bufferedSliderImage != null &&
                            _bufferedSliderImage.type == Image.Type.Filled)
                        {
                            _bufferedSliderImage.fillAmount = d;
                        }
                        else
                        {
                            anchorMin[0] = t1;
                            anchorMax[0] = t2;
                        }

                        _bufferedSliderRect.anchorMin = anchorMin;
                        _bufferedSliderRect.anchorMax = anchorMax;
                    }
                }
            }
        }

        // Callback function to handle events
        public void OnVideoEvent(MediaPlayer mp, MediaPlayerEvent.EventType et, ErrorCode errorCode)
        {
            switch (et)
            {
                case MediaPlayerEvent.EventType.ReadyToPlay:
                    break;
                case MediaPlayerEvent.EventType.Started:
                    break;
                case MediaPlayerEvent.EventType.FirstFrameReady:
                    SwapPlayers();
                    break;
                case MediaPlayerEvent.EventType.FinishedPlaying:
                    break;
            }

            Debug.Log("Event: " + et.ToString());
        }



        private void OnClickFull()
        {
            if (PlayingPlayer)
            {
                if (PlayingPlayer.Control.IsPlaying())
                {

                    OnPauseButton();
                    _pause_btn.gameObject.SetActive(true);
                    
                    _pause_btn.GetComponent<Image>().DOFade(1.0f,0.35f).OnComplete(()=> 
                    {
                        _pause_btn.GetComponent<Image>().DOFade(.0f, 0.35f).SetDelay(1.0f).OnComplete(()=> 
                        {
                            _pause_btn.gameObject.SetActive(false);
                        });
                    });
                   

                }else
                {
                    _play_btn.gameObject.SetActive(true);

                    _play_btn.GetComponent<Image>().DOFade(1.0f, 0.35f).OnComplete(() =>
                    {
                        _play_btn.GetComponent<Image>().DOFade(.0f, 0.35f).SetDelay(1.0f).OnComplete(() =>
                        {
                            _play_btn.gameObject.SetActive(false);
                        });
                    });

                    OnPlayButton();
                }
            }
        }

        private void OnClickPlay()
        {
            _play_btn.GetComponent<Image>().DOFade(.0f, 0.0f);
            _play_btn.gameObject.SetActive(false);
            OnPlayButton();
        }

        private void OnClickPause()
        {
            _pause_btn.GetComponent<Image>().DOFade(.0f, 0.0f);
            _pause_btn.gameObject.SetActive(false);
            OnPauseButton();
        }

        private void OnClickClose() {

            if (PlayingPlayer)
            {
                PlayingPlayer.CloseVideo();
            }
            TTUIPage.ClosePage<VideoView>();
        }
    }
}