using System;
using System.Collections.Generic;
using NBC;
using RenderHeads.Media.AVProVideo;
using UnityEngine;

namespace NBF
{
    public class VideoManager : MonoBehaviour
    {
        [SerializeField] private MediaPlayer _mediaPlayer;

        public static VideoManager Instance { get; private set; }
        public ResolveToRenderTexture ResolveToRenderTexture;

        public RenderTexture NowRT;

        public Action<RenderTexture> OnPlayStart;
        public Action<MediaPlayerEvent.EventType> OnHandleEvent;

        private int _nowPlayUrlIndex = 0;

        public float PlayProgress { get; private set; } = 0f;

        private List<string> _urls = new List<string>()
        {
            "http://10.10.0.158:9888/files/video/1.mp4",
            "http://10.10.0.158:9888/files/video/2.mp4",
            "http://10.10.0.158:9888/files/video/3.mp4",
        };

        private void Awake()
        {
            Instance = this;
            _mediaPlayer.Events.AddListener(HandleEvent);

            // Start adaptive stream using the highest resolution - ExoPlayer only
            _mediaPlayer.PlatformOptionsAndroid.videoApi = Android.VideoApi.ExoPlayer;
            _mediaPlayer.PlatformOptionsAndroid.startWithHighestBitrate = true;

            // Set the maximum adaptive resolution to 1080p - ExoPlayer only
            _mediaPlayer.PlatformOptionsAndroid.videoApi = Android.VideoApi.ExoPlayer;
            _mediaPlayer.PlatformOptionsAndroid.preferredMaximumResolution =
                MediaPlayer.OptionsAndroid.Resolution._1080p;

            // // Set the peak adaptive bitrate to 4Mbps - ExoPlayer only
            // _mediaPlayer.PlatformOptionsAndroid.videoApi = Android.VideoApi.ExoPlayer;
            // _mediaPlayer.PlatformOptionsAndroid.preferredPeakBitRate = 4.0f;
            // _mediaPlayer.PlatformOptionsAndroid.preferredPeakBitRateUnits =
            //     MediaPlayer.OptionsAndroid.BitRateUnits.Mbps;
        }

        private void Update()
        {
            if (!_mediaPlayer) return;

            if (_mediaPlayer.Info != null)
            {
                TimeRange timelineRange = GetTimelineRange();
                double t = 0.0;
                if (timelineRange.duration > 0.0)
                {
                    t = ((_mediaPlayer.Control.GetCurrentTime() - timelineRange.startTime) / timelineRange.duration);
                }

                PlayProgress = Mathf.Clamp01((float)t);
            }
        }

        #region 事件

        void HandleEvent(MediaPlayer mp, MediaPlayerEvent.EventType eventType, ErrorCode code)
        {
            Debug.Log("MediaPlayer " + mp.name + " generated event: " + eventType.ToString());
            OnHandleEvent?.Invoke(eventType);
            if (eventType == MediaPlayerEvent.EventType.Error)
            {
                Debug.LogError("Error: " + code);
            }
            else if (eventType == MediaPlayerEvent.EventType.MetaDataReady)
            {
                Log.Info("播放数据已准备====");
            }
            else if (eventType == MediaPlayerEvent.EventType.Started)
            {
                var width = mp.Info.GetVideoWidth();
                var height = mp.Info.GetVideoHeight();
                Log.Info("播放开始====");
                if (NowRT != null)
                {
                    NowRT.Release();
                }

                NowRT = new RenderTexture(width, height, 0, RenderTextureFormat.ARGB32);

                ResolveToRenderTexture.ExternalTexture = NowRT;
                OnPlayStart?.Invoke(NowRT);
            }
        }

        #endregion

        #region 播放控制

        public void TogglePlayPause()
        {
            if (_mediaPlayer && _mediaPlayer.Control != null)
            {
                if (_mediaPlayer.Control.IsPlaying())
                {
                    Pause();
                }
                else
                {
                    Play();
                }
            }
        }

        public void Play()
        {
            if (_mediaPlayer && _mediaPlayer.Control != null)
            {
                _mediaPlayer.Play();

#if UNITY_ANDROID || UNITY_OPENHARMONY
                Screen.sleepTimeout = SleepTimeout.NeverSleep;
#endif
            }
        }

        private void Pause()
        {
            if (_mediaPlayer && _mediaPlayer.Control != null)
            {
                _mediaPlayer.Pause();
#if UNITY_ANDROID || UNITY_OPENHARMONY
                Screen.sleepTimeout = SleepTimeout.SystemSetting;
#endif
            }
        }

        #endregion


        private TimeRange GetTimelineRange()
        {
            if (_mediaPlayer.Info != null)
            {
                return Helper.GetTimelineRange(_mediaPlayer.Info.GetDuration(),
                    _mediaPlayer.Control.GetSeekableTimes());
            }

            return new TimeRange();
        }

        public void Next()
        {
            if (_nowPlayUrlIndex >= _urls.Count - 1)
            {
                _nowPlayUrlIndex = 0;
            }
            else
            {
                _nowPlayUrlIndex++;
            }

            ChangeVideo();
        }

        public void Previous()
        {
            if (_nowPlayUrlIndex <= 0)
            {
                _nowPlayUrlIndex = _urls.Count - 1;
            }
            else
            {
                _nowPlayUrlIndex--;
            }

            ChangeVideo();
        }

        public void ChangeVideo()
        {
            _mediaPlayer.CloseMedia();
            _mediaPlayer.SetMediaPath(new MediaPath(_urls[_nowPlayUrlIndex], MediaPathType.AbsolutePathOrURL));
            _mediaPlayer.OpenMedia();
        }
    }
}