using Android.App;
using Android.Content.Res;
using System;
using System.Linq;
using Vinno.vCloud.FIS.CrossPlatform.Common;
using Vinno.vCloud.FIS.CrossPlatform.Common.Enum;
using Vinno.vCloud.FIS.CrossPlatform.Common.Hardware;
using Vinno.vCloud.FIS.CrossPlatform.Common.LiveVideo;
using Vinno.vCloud.FIS.CrossPlatform.Common.LiveVideo.Interface;

namespace Vinno.vCloud.FIS.CrossPlatform.Android.LiveVideo.RTMP

{
    public class RtmpPusher : ILiveVideoPusher
    {
        private SmartPublisher _pusher;
        private CPCombineSmartPushConfiguration _pushConfiguration;

        private int _screenWidth;

        private int _screenHeight;

        private Action<EnumLiveStates> _updateState;

        /// <summary>
        /// Preview local camera capured changed, Rtmp  unused
        /// </summary>
        public event EventHandler<CPVideoFrameData> PreviewCameraCapured;

        /// <summary>
        /// The event to notificate the US to show or hide the live video out put window
        /// </summary>
        public event EventHandler<LiveNotificationArgs> LiveNotification;

        /// <summary>
        /// The event to notificate the Live Status Changed.
        /// Only used for RTMP pusher.
        /// </summary>
        public event EventHandler<EnumLiveStatus> StatusChanged;

        public int TerminalWidth { get; private set; }

        public int TerminalHeight { get; private set; }

        public int CameraWidth { get; private set; }

        public int CameraHeight { get; private set; }

        public RtmpPusher(Action<EnumLiveStates> updateState)
        {
            _updateState = updateState;
            var orientation = Application.Context.Resources.Configuration.Orientation;
            switch (orientation)
            {
                case Orientation.Landscape:
                    _screenWidth = Application.Context.Resources.DisplayMetrics.WidthPixels;
                    _screenHeight = Application.Context.Resources.DisplayMetrics.HeightPixels;
                    break;

                case Orientation.Portrait:
                    _screenWidth = Application.Context.Resources.DisplayMetrics.HeightPixels;
                    _screenHeight = Application.Context.Resources.DisplayMetrics.WidthPixels;
                    break;

                default:
                    var screenWidth = Application.Context.Resources.DisplayMetrics.WidthPixels;
                    var screenHeight = Application.Context.Resources.DisplayMetrics.HeightPixels;
                    if (screenHeight > screenWidth)
                    {
                        _screenWidth = screenHeight;
                        _screenHeight = screenWidth;
                    }
                    else
                    {
                        _screenHeight = screenHeight;
                        _screenWidth = screenWidth;
                    }
                    break;
            }
        }

        public bool Start(CPCombineSmartPushConfiguration configuration)
        {
            try
            {
                _pushConfiguration = configuration;
                UpdateResolution(_pushConfiguration);
                CrossPlatformHelper.Instance.LogWriter?.WriteLineInfo($"Started rtmp pusher: {configuration}");
                if (_pushConfiguration.ShouldPushData || _pushConfiguration.ShowPreviewImage)
                {
                    DoPush();
                }
                if (_pushConfiguration.ShouldPushData)
                {
                    _updateState?.Invoke(EnumLiveStates.TerminalIsPushing);
                }
                return true;
            }
            catch (Exception ex)
            {
                CrossPlatformHelper.Instance.LogWriter?.WriteLineError($"RtmpPusher: start failed ex:{ex}");
            }

            return true;
        }

        public bool Stop()
        {
            try
            {
                if (_pushConfiguration != null)
                {
                    if (!_pushConfiguration.ShouldPushData && _pushConfiguration.ShowPreviewImage)//本地预览
                    {
                        CloseSmartPusher();
                        CrossPlatformHelper.Instance.LogWriter?.WriteLineInfo($"Restart smart pusher");
                        DoPush();
                        CrossPlatformHelper.Instance.LogWriter?.WriteLineInfo($"RtmpPusher: stop and only show preview to restart push");
                        return true;
                    }
                    else
                    {
                        try
                        {
                            CloseSmartPusher();
                            CrossPlatformHelper.Instance.LogWriter?.WriteLineInfo($"RtmpPusher: Dispose");
                            return true;
                        }
                        catch (Exception ex)
                        {
                            CrossPlatformHelper.Instance.LogWriter?.WriteLineError($"RtmpPusher: stop failed to kill ex:{ex}");
                        }
                    }
                }
            }
            catch (Exception e)
            {
                CrossPlatformHelper.Instance.LogWriter?.WriteLineError($"RtmpPusher: stop failed ex:{e}");
            }
            finally
            {
                LiveNotification?.Invoke(this, new LiveNotificationArgs(false, TerminalWidth, TerminalHeight));
            }
            return false;
        }

        /// <summary>
        /// set push mute or ummute
        /// </summary>
        /// <param name="isMute"></param>
        public void SetMute(bool isMute)
        {
            if (_pusher != null)
            {
                _pusher.IsMute = isMute;
            }
        }

        public void SetPreviewCamera(bool isShowPreview)
        {
            if (isShowPreview)
            {
                _pusher.PreviewImageReceived += OnPreviewImageReceived;
            }
            else
            {
                if (_pushConfiguration.ShouldPushData)//如果正在推流
                {
                    _pusher.PreviewImageReceived -= OnPreviewImageReceived;
                }
                else
                {
                    Stop();
                }
            }
        }

        public void ChangeCamera(string cameraId)
        {
            if (_pusher != null && !_pushConfiguration.ShouldPushData)
            {
                Stop();
            }
        }

        public void ChangeMic(string micId)
        {
            if (_pusher != null && !_pushConfiguration.ShouldPushData)
            {
                Stop();
            }
        }

        public bool StartSpeedTest(uint appId, string userid, string userSign)
        {
            // throw new NotImplementedException();
            return true;
        }

        public void StopSpeedTest()
        {
            // throw new NotImplementedException();
        }

        private void DoPush()
        {
            switch (_pushConfiguration.Mode)
            {
                case EnumPushMode.Screen:
                    StartPushScreen();
                    break;

                case EnumPushMode.Camera when !string.IsNullOrEmpty(_pushConfiguration.VideoDevicePath):
                    StartPushCamera();
                    break;

                case EnumPushMode.CombineTerminal:
                case EnumPushMode.CombineTerminalGetResolution:
                    StartPush();
                    break;
            }
        }

        private bool StartPushScreen()
        {
            CrossPlatformHelper.Instance.LogWriter?.WriteLineInfo($"StartPushScreen begin");
            var noError = true;
            try
            {
                CloseSmartPusher();
                _pusher = new SuperScreenPublisher(_pushConfiguration.PushUrl, _updateState);
                _pusher.IsMute = _pushConfiguration.IsMute;
                _pusher.StatusChanged += OnStatusChanged;
                if (_pushConfiguration.ShouldPushData)
                {
                    _pusher.Start();
                }
                LiveNotification?.Invoke(this, new LiveNotificationArgs(true, TerminalWidth, TerminalHeight));
                CrossPlatformHelper.Instance.LogWriter?.WriteLineInfo($"StartPushScreen successfully");
            }
            catch (Exception e)
            {
                noError = false;
                CrossPlatformHelper.Instance.LogWriter?.WriteLineError($"StartPushScreen ex:{e}");
            }

            if (!noError)
            {
                return false;
            }
            CrossPlatformHelper.Instance.LogWriter?.WriteLineInfo("Start Push Screen Success");
            return true;
        }

        private bool StartPushCamera()
        {
            var noError = true;
            try
            {
                CloseSmartPusher();
                CrossPlatformHelper.Instance.LogWriter?.WriteLineInfo($"StartPushCamera begin");
                _pusher = new SuperDevicePublisher(_pushConfiguration.VideoDevicePath, _pushConfiguration.PushUrl, _updateState);
                _pusher.IsMute = _pushConfiguration.IsMute;
                _pusher.StatusChanged += OnStatusChanged;
                if (_pushConfiguration.EnablePreviewImage)
                {
                    _pusher.EnablePreview = true;
                    _pusher.PreviewImageReceived += OnPreviewImageReceived;
                }

                if (_pushConfiguration.ShouldPushData)
                {
                    _pusher.Start();
                }
                else if (_pushConfiguration.ShowPreviewImage)
                {
                    _pusher.StartOnlyPreview();
                }
                CrossPlatformHelper.Instance.LogWriter?.WriteLineInfo($"StartPushCamera successfully");
            }
            catch (Exception e)
            {
                CrossPlatformHelper.Instance.LogWriter?.WriteLineError($"StartPushCamera ex:{e}");
                noError = false;
            }

            if (!noError)
            {
                return false;
            }

            return true;
        }


        /// <summary>
        /// update  TerminalWidth TerminalHeight CameraWidth CameraHeight
        /// </summary>
        /// <param name="configuration"></param>
        public void UpdateResolution(CPCombineSmartPushConfiguration configuration)
        {
            var pusher = new CombineSmartPublisher(configuration.PushDataSourceType, configuration.VideoDevicePath, configuration.PushUrl, null);
            var resolutions = pusher.GetDeviceResolutions();
            if (resolutions != null)
            {
                if (resolutions != null)
                {
                    TerminalWidth = resolutions.TerminalWidth;
                    TerminalHeight = resolutions.TerminalHeight;
                    CameraWidth = resolutions.CameraWidth;
                    CameraHeight = resolutions.CameraHeight;
                }
            }
            pusher.Dispose();
        }

        private void StartPush()
        {
            EnumPushDataSourceType pushDataSourceType = _pushConfiguration.PushDataSourceType;
            CrossPlatformHelper.Instance.LogWriter?.WriteLineInfo($"StartPushCombine begin");
            try
            {
                CloseSmartPusher();

                _pusher = new CombineSmartPublisher(pushDataSourceType, _pushConfiguration.VideoDevicePath, _pushConfiguration.PushUrl, _updateState);
                _pusher.IsMute = _pushConfiguration.IsMute;

                _pusher.StatusChanged += OnStatusChanged;
                if (_pushConfiguration.EnablePreviewImage)
                {
                    _pusher.EnablePreview = true;
                    _pusher.PreviewImageReceived += OnPreviewImageReceived;
                }
                if (_pushConfiguration.ShouldPushData)
                {
                    _pusher.Start();
                }
                else if (_pushConfiguration.ShowPreviewImage)
                {
                    _pusher.StartOnlyPreview();
                }
                LiveNotification?.Invoke(this, new LiveNotificationArgs(true, TerminalWidth, TerminalHeight));
                CrossPlatformHelper.Instance.LogWriter?.WriteLineInfo("Start Push Screen and Camera Success");
            }
            catch (Exception e)
            {
                CrossPlatformHelper.Instance.LogWriter?.WriteLineError($"StartPushScreen ex:{e}");
            }
        }

        private void OnStatusChanged(object sender, CPLiveStatusData publisherStatusData)
        {
            CrossPlatformHelper.Instance.LogWriter?.WriteLineInfo($"SamrtPusher status changed:{publisherStatusData.Status}");
            StatusChanged?.Invoke(this, publisherStatusData.Status);
        }

        private void OnPreviewImageReceived(object sender, CPVideoFrameData e)
        {
            PreviewCameraCapured?.Invoke(this, e);
        }

        private void CloseSmartPusher()
        {
            if (_pusher != null)
            {
                _pusher.PreviewImageReceived -= OnPreviewImageReceived;
                _pusher.StatusChanged -= OnStatusChanged;
                _pusher.Dispose();
                _pusher = null;
            }
        }
    }
}