using Avalar.Models.Interfaces;
using Avalonia.Media.Imaging;
using Avalonia.Threading;
using ReactiveUI;
using System;
using System.ComponentModel;

namespace Avalar.ViewModels.Image
{
    public class ImageLoadedViewModel : ReactiveObject
    {
        private IImageModel m_ImageModel;

        public ImageLoadedViewModel(IBitmap bitmap, IImageModel imageModel)
        {
            Bitmap = bitmap;
            m_ImageModel = imageModel ?? throw new ArgumentNullException(nameof(imageModel));

            m_ImageModel.PropertyChanged += OnImageModelChanged;
        }

        private void OnImageModelChanged(object sender, PropertyChangedEventArgs e)
        {
            Dispatcher.UIThread.InvokeAsync(() =>
            {
                Bitmap = m_ImageModel.LatestResult;
            });
        }

        private IBitmap m_Bitmap;
        public IBitmap Bitmap
        {
            get => m_Bitmap;
            set => this.RaiseAndSetIfChanged(ref m_Bitmap, value);
        }
    }
}