namespace QuikDawEditor.EditingClasses;

public partial class Track
{

    public void InitializeTrackAudio()
    {

        foreach (VstPluginReference vstref in TrackEffectVsts)
            vstref.ReturnedWithoutError = File.Exists(vstref.VstDllFileFullPath);

        foreach (VstPluginReference vstref in TrackInstrumentVsts)
            vstref.ReturnedWithoutError = File.Exists(vstref.VstDllFileFullPath);


        InitializeVsts();


        foreach (Clip c in Clips)
        {
            if (c.IsAudioClip)
            {
                c.IsOrphanClip = !File.Exists(c.clipSourceFullPath);

                if (c.IsOrphanClip)
                {
                    Debug.WriteLine("Could not find the file...." + c.ClipSourceFileName + " (looking for UNUSED files)");
                    if (File.Exists(EditingProjectClipsDirectory + "\\UNUSED_" + c.ClipSourceFileName))
                        File.Move(EditingProjectClipsDirectory + "\\UNUSED_" + c.ClipSourceFileName, c.clipSourceFullPath);
                }
                else
                {
                    AddClipSampleProviderToClip(c);
                    c.ApplyWaveBitmapSourcesToImage();
                }
                c.myTrack = this;
            }
        }

        if (IsSubmixTrack)
            foreach (Track strack in SubTracks)
                strack.InitializeTrackAudio();

    }

    public void InitializeVsts()
    {

        foreach (ActiveVstPlugin vplugin in this.TrackEffectVsts)
        {
            if (vplugin.ReturnedWithoutError)
            {  //Create vst contexts and set their parameters from saved data
                Application.Current.Dispatcher.Invoke(() =>
                { //must be invoke or else doesn't affect the plugin context
                    try
                    {
                        vplugin.OpenActivePluginContext();
                        for (int paramno = 0; paramno < vplugin.myContext.PluginInfo.ParameterCount; paramno++)
                            vplugin.myContext.PluginCommandStub.Commands.SetParameter(paramno, vplugin.VstParameters[paramno].ParameterValue);
                    }
                    catch (Exception ex) { Debug.WriteLine("error loading Effect vst:\n" + ex.Message); vplugin.ReturnedWithoutError = false; }

                }, DispatcherPriority.Normal);
            }

        }

        foreach (ActiveVstPlugin vplugin in this.TrackInstrumentVsts)
        {
            if (vplugin.ReturnedWithoutError)
            {  //Create vst contexts and set their parameters from saved data
                Application.Current.Dispatcher.Invoke(() =>
                { //must be invoke or else doesn't affect the plugin context
                    try
                    {
                        vplugin.OpenActivePluginContext();
                        for (int paramno = 0; paramno < vplugin.myContext.PluginInfo.ParameterCount; paramno++)
                            vplugin.myContext.PluginCommandStub.Commands.SetParameter(paramno, vplugin.VstParameters[paramno].ParameterValue);

                        if (vplugin.IsGeneralMidi)
                        { //Specific setting for channel 10 as drums

                            vplugin.Channel = vplugin.SelectedVstProgramIndex == 128 ? 10 : 1;  //128 ~ Standard Drum Kit

                            if (vplugin.SelectedVstProgramIndex == 128)
                            {
                                int offset = 9 * 0x28; //channel 10 data offset
                                Array.Copy(new byte[] { 0x00, 0x00, 0x00, 0x01 }, 0, vplugin.PluginChunk, 0xA70 + offset, 4); //prog
                                Array.Copy(new byte[] { 0x64 }, 0, vplugin.PluginChunk, 0xA83 + offset, 1); //vol
                                Array.Copy(new byte[] { 0x20 }, 0, vplugin.PluginChunk, 0xA78 + offset, 1); //pitchbend=0
                                Array.Copy(new byte[] { 0x40 }, 0, vplugin.PluginChunk, 0xA87 + offset, 1); //pan
                            }
                        }
                        else
                        {
                            vplugin.Channel = 1;
                            vplugin.myContext.PluginCommandStub.Commands.SetProgram(vplugin.SelectedVstProgramIndex);
                        }


                        if (vplugin.PluginChunk != null)
                            vplugin.myContext.PluginCommandStub.Commands.SetChunk(vplugin.PluginChunk, false);

                    }
                    catch (Exception ex) { Debug.WriteLine("error loading Instrument vst:\n" + ex.Message); vplugin.ReturnedWithoutError = false; }

                }, DispatcherPriority.Normal);
            }

        }

    }

    public void FlushVsts()
    {
        foreach (ActiveVstPlugin avp in this.TrackEffectVsts)
        {
            avp.myContext.PluginCommandStub.Commands.EditorIdle();
            avp.myContext.PluginCommandStub.Commands.StopProcess();
            avp.myContext.PluginCommandStub.Commands.MainsChanged(false);
            avp.myContext.PluginCommandStub.Commands.MainsChanged(true);
            avp.myContext.PluginCommandStub.Commands.StartProcess();
        }

        foreach (ActiveVstPlugin avp in this.TrackInstrumentVsts)
        {
            avp.myContext.PluginCommandStub.Commands.EditorIdle();
            avp.myContext.PluginCommandStub.Commands.StopProcess();
            avp.myContext.PluginCommandStub.Commands.MainsChanged(false);
            avp.myContext.PluginCommandStub.Commands.MainsChanged(true);
            avp.myContext.PluginCommandStub.Commands.StartProcess();
        }
    }

}