using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Interop;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;
using System.Windows.Threading;
using Jacobi.Vst.Core;
using Jacobi.Vst.Core.Host;
using QuikDawEditor.VST;
using static QuikDawEditor.EDITING.MiscMethods;
using static QuikDawEditor.EDITING.StaticProperties;

namespace QuikDawEditor;

public partial class EditorHostWindow : Window
{

    private IVstPluginCommandStub myplugstub;
    internal ActiveVstPlugin myActiveVstPlugin;
    //public ObservableCollection<VstParameter> currentPluginParameters;
    private DispatcherTimer parameterChangeMonitorTimer = new DispatcherTimer();

    private void Window_PreviewMouseDown(object sender, MouseButtonEventArgs e)   {  this.Topmost = true;  }

    //public EditorHostWindow(Point openWinLoc, IVstPluginCommandStub plugstub,  ObservableCollection<VstParameter> currPlugInParams, string pinID)
    public EditorHostWindow(Point openWinLoc, IVstPluginCommandStub plugstub, ActiveVstPlugin activePlugin, string pinID)
    {
        InitializeComponent();
        myplugstub = plugstub;
        //currentPluginParameters = currPlugInParams;
        myActiveVstPlugin = activePlugin;
        this.Left = openWinLoc.X;
        this.Top = openWinLoc.Y;
    }

    private void Window_ContentRendered(object sender, EventArgs e)
    {
        myplugstub.Commands.EditorOpen(new WindowInteropHelper(this).Handle);
        myplugstub.Commands.MainsChanged(true);

        if (myplugstub.Commands.EditorGetRect(out System.Drawing.Rectangle wndRect))
        {
            WinFormsHost.Width = wndRect.Width / dpiXFac;
            WinFormsHost.Height = wndRect.Height / dpiYFac;
        }

        //Debug.WriteLine("\nWinformshostWidth=" + WinFormsHost.Width.ToString() + "/////formrectwidth=" + wndRect.Width.ToString() + " (" + (wndRect.Width / dpiXFac).ToString());

        this.Title = myplugstub.Commands.GetEffectName();

        parameterChangeMonitorTimer.Interval = new TimeSpan(0, 0, 0, 1);  //Update every second
        parameterChangeMonitorTimer.Tick += ParameterChangeMonitorTimer_Tick; 
        parameterChangeMonitorTimer.Start();

    }

    private void ParameterChangeMonitorTimer_Tick(object sender, EventArgs e)
    {
        try
        {
            //Check and update only changed parameters
            for (int paramno = 0; paramno < myplugstub.PluginContext.PluginInfo.ParameterCount; paramno++)
            {
                float paramval = myplugstub.Commands.GetParameter(paramno);
                if (myActiveVstPlugin.VstParameters[paramno].ParameterValue != paramval)
                    myActiveVstPlugin.VstParameters[paramno].ParameterValue = paramval;
            }

            myActiveVstPlugin.UpdateGetProgName();

        }
        catch (Exception ex) { Debug.WriteLine("error in parameter timer: " + ex.Message); parameterChangeMonitorTimer.Stop(); }

    }

    private void Window_Closing(object sender, System.ComponentModel.CancelEventArgs e)
    {
        parameterChangeMonitorTimer.Stop();
        parameterChangeMonitorTimer = null;

        if (!e.Cancel)
            myplugstub.Commands.EditorClose();

        editingProject.NeedsSaving = true;

    }

    private void Window_LocationChanged(object sender, EventArgs e)
    {
        editingProject.NeedsSaving = true;
    }
}