using System;

using System.Collections.Generic;

using System.Linq;

using System.Windows.Input;

using GalaSoft.MvvmLight;

using GalaSoft.MvvmLight.Command;

using GalaSoft.MvvmLight.Messaging;

using Pvp.App.Messaging;

using Pvp.Core.DirectShow;

using Pvp.Core.MediaEngine;

using Pvp.Core.MediaEngine.Description;



namespace Pvp.App.ViewModel

{

    public class MediaInformationViewModel : ViewModelBase

    {

        private readonly IMediaEngineFacade _engine;

        private readonly List<MediaInfoItem> _infoList;



        private ICommand _okCommand;



        public MediaInformationViewModel(IMediaEngineFacade engine)

        {

            _engine = engine;

            _infoList = new List<MediaInfoItem>();



            Load();

        }



        private void Load()

        {

            var info = _engine.MediaInfo;

            if (info != null)

            {

                AddInfoItem(Resources.Resources.infodialog_media_source, info.source);

                AddInfoItem(Resources.Resources.infodialog_type_format, info.GetStreamSubType());



                string s = String.Empty;

                if (info.StreamSubType != MediaSubType.DVD)

                {

                    var duration = _engine.Duration;

                    if (duration != TimeSpan.Zero)

                    {

                        AddInfoItem(Resources.Resources.infodialog_duration,

                                    string.Format("{0:d2}:{1:d2}:{2:d2}", duration.Hours, duration.Minutes, duration.Seconds));

                    }

                }

                else

                {

                    AddInfoItem(String.Empty, String.Empty);

                    DVD_DOMAIN domain;

                    if (_engine.GetCurrentDomain(out domain))

                    {

                        switch (domain)

                        {

                            case DVD_DOMAIN.DVD_DOMAIN_FirstPlay:

                                s = Resources.Resources.infodialog_dvddomain_FirstPlay;

                                break;

                            case DVD_DOMAIN.DVD_DOMAIN_VideoManagerMenu:

                                s = Resources.Resources.infodialog_dvddomain_VideoManagerMenu;

                                break;

                            case DVD_DOMAIN.DVD_DOMAIN_VideoTitleSetMenu:

                                s = Resources.Resources.infodialog_dvddomain_VideoTitleSetMenu;

                                break;

                            case DVD_DOMAIN.DVD_DOMAIN_Title:

                                s = Resources.Resources.infodialog_dvddomain_Title;

                                break;

                            case DVD_DOMAIN.DVD_DOMAIN_Stop:

                                s = Resources.Resources.infodialog_dvddomain_Stop;

                                break;

                        }



                        AddInfoItem(Resources.Resources.infodialog_Current_Domain, s);

                        if (domain == DVD_DOMAIN.DVD_DOMAIN_Title)

                        {

                            AddInfoItem(Resources.Resources.infodialog_Current_Title, _engine.CurrentTitle.ToString());

                            AddInfoItem(Resources.Resources.infodialog_Current_Chapter, _engine.CurrentChapter.ToString());

                            var duration = _engine.Duration;

                            if (duration != TimeSpan.Zero)

                            {

                                AddInfoItem(Resources.Resources.infodialog_Title_Duration,

                                            string.Format("{0:d2}:{1:d2}:{2:d2}", duration.Hours, duration.Minutes, duration.Seconds));

                            }

                        }

                    }

                }



                double d;

                int count = info.NumberOfStreams;

                for (int i = 0; i < count; i++)

                {

                    AddInfoItem(String.Empty, String.Empty);



                    var pStreamInfo = info.GetStreamInfo(i);

                    AddInfoItem(String.Format(Resources.Resources.infodialog_Stream_format, i + 1), pStreamInfo.GetMajorType());



                    if ((pStreamInfo.Flags & StreamInfoFlags.SI_FOURCC) != 0)

                        AddInfoItem(Resources.Resources.infodialog_Format_Type, pStreamInfo.GetVideoSubType());



                    if ((pStreamInfo.Flags & StreamInfoFlags.SI_DVDCOMPRESSION) != 0)

                        AddInfoItem(Resources.Resources.infodialog_Video_Format, pStreamInfo.GetDVDCompressionType());



                    if ((pStreamInfo.Flags & StreamInfoFlags.SI_DVDFRAMEHEIGHT) != 0)

                        AddInfoItem(Resources.Resources.infodialog_TV_System, String.Format(Resources.Resources.infodialog_tv_system_value_format,

                                                                                            pStreamInfo.ulFrameHeight, pStreamInfo.ulFrameRate));



                    if ((pStreamInfo.Flags & StreamInfoFlags.SI_RECT) != 0)

                        AddInfoItem(Resources.Resources.infodialog_Video_Size, String.Format("{0} x {1}",

                                                                                             pStreamInfo.rcSrc.right, pStreamInfo.rcSrc.bottom));



                    if ((pStreamInfo.Flags & StreamInfoFlags.SI_ASPECTRATIO) != 0)

                        AddInfoItem(Resources.Resources.infodialog_Aspect_Ratio, String.Format("{0} : {1}",

                                                                                               pStreamInfo.dwPictAspectRatioX, pStreamInfo.dwPictAspectRatioY));



                    if ((pStreamInfo.Flags & StreamInfoFlags.SI_FRAMERATE) != 0)

                    {

                        d = CoreDefinitions.ONE_SECOND;

                        double dTimePerFrame = pStreamInfo.AvgTimePerFrame;

                        d /= dTimePerFrame;

                        AddInfoItem(Resources.Resources.infodialog_Frame_Rate,

                                    String.Format(Resources.Resources.infodialog_framerate_value_format, d));

                    }



                    //		if ((pStreamInfo.Flags & StreamInfoFlags.SI_DVDFRAMERATE)!=0)

                    //			AddInfoItem("Frame Rate", pStreamInfo.ulFrameRate);



                    if ((pStreamInfo.Flags & StreamInfoFlags.SI_INTERLACEMODE) != 0)

                        AddInfoItem(Resources.Resources.infodialog_Interlace_Mode, pStreamInfo.GetInterlaceMode());



                    if ((pStreamInfo.Flags & StreamInfoFlags.SI_WAVEFORMAT) != 0)

                        AddInfoItem(Resources.Resources.infodialog_Format_Type, pStreamInfo.GetWaveFormat());



                    if ((pStreamInfo.Flags & StreamInfoFlags.SI_DVDAUDIOFORMAT) != 0)

                        AddInfoItem(Resources.Resources.infodialog_Format_Type, pStreamInfo.GetDVDAudioFormat());



                    if ((pStreamInfo.Flags & StreamInfoFlags.SI_DVDAUDIOSTREAMNAME) != 0)

                        AddInfoItem(Resources.Resources.infodialog_Language, pStreamInfo.strDVDAudioStreamName);



                    s = String.Empty;

                    string s1;

                    if ((pStreamInfo.Flags & StreamInfoFlags.SI_SAMPLERATE) != 0)

                        s = String.Format(Resources.Resources.infodialog_samplerate_value_format, pStreamInfo.nSamplesPerSec);



                    if ((pStreamInfo.Flags & StreamInfoFlags.SI_DVDFREQUENCY) != 0)

                        s = String.Format(Resources.Resources.infodialog_dvd_frequency_value_format, pStreamInfo.dwFrequency);



                    if ((pStreamInfo.Flags & StreamInfoFlags.SI_WAVECHANNELS) != 0)

                    {

                        if (pStreamInfo.nChannels == 1)

                            s1 = String.Format(Resources.Resources.infodialog_channel_format, pStreamInfo.nChannels);

                        else

                            s1 = String.Format(Resources.Resources.infodialog_channels_format, pStreamInfo.nChannels);

                        s += s1;

                    }



                    if ((pStreamInfo.Flags & StreamInfoFlags.SI_BITSPERSAMPLE) != 0

                        && pStreamInfo.wBitsPerSample != 0)

                    {

                        s1 = String.Format(Resources.Resources.infodialog_bits_per_sample_format, pStreamInfo.wBitsPerSample);

                        s += s1;

                    }



                    if (s.Length != 0)

                        AddInfoItem(Resources.Resources.infodialog_Format, s);



                    if ((pStreamInfo.Flags & StreamInfoFlags.SI_AUDIOBITRATE) != 0)

                        AddInfoItem(Resources.Resources.infodialog_Bit_Rate,

                                    String.Format(Resources.Resources.infodialog_bitrate_value_format, 8 * pStreamInfo.nAvgBytesPerSec / 1000));

                }

            }

        }



        private void AddInfoItem(string name, string value)

        {

            _infoList.Add(new MediaInfoItem(name, value));

        }



        public IEnumerable<MediaInfoItem> MediaInfo

        {

            get { return _infoList; }

        }



        public ICommand OkCommand

        {

            get

            {

                if (_okCommand == null)

                {

                    _okCommand = new RelayCommand(

                        () =>

                        {

                            Messenger.Default.Send<CommandMessage>(new CommandMessage(Command.MediaInformationWindowClose));

                        });

                }



                return _okCommand;

            }

        }

    }

}