// 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 System;
using UnityEngine;
using FairyGUI;
using NBC;
using RenderHeads.Media.AVProVideo;

namespace NBF
{
    public partial class VideoPlayer : GComponent
    {
        private NTexture _texture;
        private float _defY;

        private void OnInited()
        {
            VideoManager.Instance.OnPlayStart += OnPlayStart;
            VideoManager.Instance.OnHandleEvent += OnHandleEvent;
            BtnPause.onClick.Set(OnClickPause);

            SwipeGesture gesture = new SwipeGesture(BtnPause);
            gesture.onBegin.Set(OnSwipeBegin);
            gesture.onMove.Set(OnSwipeMove);
            gesture.onEnd.Set(OnSwipeEnd);
            gesture.onAction.Add(OnSwipeGesture);
            _defY = VideoVer.y;
            // Video.texture = new NTexture(Game.Instance.RT);
            // Player.on
            // Player.OpenMedia()
        }

        public override void Dispose()
        {
            VideoManager.Instance.OnPlayStart -= OnPlayStart;
            VideoManager.Instance.OnHandleEvent -= OnHandleEvent;
            if (_texture != null)
            {
                _texture.Dispose();
            }

            base.Dispose();
        }

        #region 手势

        private float _offsetValue;

        private void OnSwipeBegin(EventContext context)
        {
        }

        private void OnSwipeMove(EventContext context)
        {
            var gesture = context.sender as SwipeGesture;
            if (gesture == null) return;
            Log.Info($"gesture.delta.y={gesture.delta.y}");
            _offsetValue += gesture.delta.y;
            VideoVer.y = _defY + _offsetValue;
        }

        private void OnSwipeEnd(EventContext context)
        {
            _offsetValue = 0;
            VideoVer.y = _defY;
        }

        private void OnSwipeGesture(EventContext context)
        {
            SwipeGesture swipeGesture = (SwipeGesture)context.sender;
            var value = Math.Abs(swipeGesture.position.y);
            if (value < 200)
            {
                return;
            }
            
            if (swipeGesture.position.y < 0) //向上滑动
            {
                Log.Info($"向上滑动 y={swipeGesture.position.y}");
                VideoManager.Instance.Next();
            }
            else
            {
                Log.Info($"向下滑动 y={swipeGesture.position.y}");
                VideoManager.Instance.Previous();
            }

            VideoVer.alpha = 0;
        }

        #endregion


        private void OnHandleEvent(MediaPlayerEvent.EventType eventType)
        {
            if (eventType == MediaPlayerEvent.EventType.Paused)
            {
                // pauseCtrl.selectedIndex = 1;
            }
            // else if (eventType == MediaPlayerEvent.EventType.Unpaused ||
            //          eventType == MediaPlayerEvent.EventType.Started)
            // {
            //     // pauseCtrl.selectedIndex = 0;
            // }
            else if (eventType == MediaPlayerEvent.EventType.Started)
            {
                StartedAnim.Play();
            }
        }

        private void OnPlayStart(RenderTexture rt)
        {
            if (_texture != null)
            {
                _texture.Dispose();
            }

            _texture = new NTexture(rt);
            VideoVer.texture = _texture;
        }


        #region 播放控制

        private void OnClickPause()
        {
            VideoManager.Instance.TogglePlayPause();
        }

        #endregion
    }
}