// 本脚本只在不存在时会生成一次。组件逻辑写在当前脚本内。已存在不会再次生成覆盖 

using UnityEngine;
using FairyGUI;
using RenderHeads.Media.AVProVideo;

namespace NBF
{
    public enum VideoPlayMode
    {
        Top,
        Mid,
        Bottom
    }

    public partial class VideoPlayer : GComponent
    {
        private VideoPlayerComponent _playerComponent;

        private NTexture _texture;
        public bool IsLoading => stageCtrl.selectedIndex == 0;

        private VideoRetData _videoRetData;
        public int VideoIndex { get; private set; }

        private void OnInited()
        {
            BtnPause.onClick.Set(OnClickPause);
        }

        public void PlayVideo(int videoIndex, VideoPlayMode mode)
        {
            VideoIndex = videoIndex;
            name = videoIndex.ToString();
            gameObjectName = videoIndex.ToString();
            if (VideoIndex < 0) return;
            _videoRetData = Game.Instance.GetVideoDataByIndex(videoIndex);
            if (_playerComponent != null)
            {
                StopVideo();
            }

            // stageCtrl.selectedIndex = 0;
            // _videoRetData = videoRetData;
            _playerComponent = VideoManager.Instance.GetPlayer(VideoIndex);
            _playerComponent.VideoIndex = videoIndex;
            _playerComponent.OnPlayStart += OnPlayStart;
            _playerComponent.OnHandleEvent += OnHandleEvent;
            var videoUrl = $"{Net.Instance.ServerUrl}/files/videos/{_videoRetData.FilePath}";

            _playerComponent.ChangeVideo(videoUrl, mode == VideoPlayMode.Mid);
            SetRt();
            // _playerComponent = 
        }

        public void StopVideo()
        {
            // var offset = _playerComponent.VideoIndex
            // if(_playerComponent.VideoIndex)
            _playerComponent.OnPlayStart -= OnPlayStart;
            _playerComponent.OnHandleEvent -= OnHandleEvent;
        }

        protected override void OnUpdate()
        {
            base.OnUpdate();
            UpdateTick();
        }

        public override void Dispose()
        {
            StopVideo();
            // if (_texture != null)
            // {
            //     _texture.Dispose();
            // }

            base.Dispose();
        }


        #region 视频播放回调

        private void OnHandleEvent(MediaPlayerEvent.EventType eventType)
        {
            if (isDisposed) return;
            if (displayObject == null) return;
            if (displayObject.gameObject == null) return;
            if (eventType == MediaPlayerEvent.EventType.Paused)
            {
                pauseCtrl.selectedIndex = 1;
            }
            else if (eventType == MediaPlayerEvent.EventType.Unpaused)
            {
                pauseCtrl.selectedIndex = 0;
            }
            else if (eventType == MediaPlayerEvent.EventType.Started)
            {
                _watchCount = 1;
                pauseCtrl.selectedIndex = 0;
                stageCtrl.selectedIndex = 1;
                StartedAnim.Play();
            }
            else if (eventType == MediaPlayerEvent.EventType.StartedSeeking)
            {
                _watchCount++;
                Tick(); //重播时也上报tick
            }
        }

        private void OnPlayStart(RenderTexture rt)
        {
            // if (_texture != null)
            // {
            //     _texture.Dispose();
            // }
            //
            // if (_playerComponent != null)
            // {
            //     _texture = new NTexture(_playerComponent.NowRT);
            //     VideoVer.texture = _texture;
            // }

            if (_texture.width != rt.width || _texture.height != rt.height)
            {
                SetRt();
            }

            // _texture.width = rt.width;
            // _texture.
            stageCtrl.selectedIndex = 1;
        }

        private void SetRt()
        {
            if (_texture != null)
            {
                _texture.Dispose();
            }

            if (_playerComponent != null)
            {
                _texture = new NTexture(_playerComponent.NowRT)
                {
                    destroyMethod = DestroyMethod.Custom
                };
                VideoVer.texture = _texture;
            }
        }

        #endregion

        #region 播放控制

        private void OnClickPause()
        {
            _playerComponent.TogglePlayPause();
        }

        #endregion

        #region 视频播放tick

        private float _videoPlayTime;
        private int _watchCount;

        private void UpdateTick()
        {
            if (IsLoading) return;
            if (_playerComponent.IsPlaying)
            {
                _videoPlayTime += Time.deltaTime;
                if (_videoPlayTime >= 5)
                {
                    Tick(); //5秒上报一次
                }
            }
        }

        private void Tick()
        {
            if (_videoRetData == null) return;
            Net.Instance.Tick(_videoRetData.Id, (int)_videoPlayTime, _watchCount);
            _watchCount = 0;
            _videoPlayTime = 0;
        }

        #endregion
    }
}