using System.Windows.Media.Imaging;
using FellowOakDicom;
using FellowOakDicom.Imaging;
using FellowOakDicom.Imaging.Codec;
using FellowOakDicom.Imaging.Render;
using Livia.Utility;

namespace DicomViewer.Models;

internal class DicomDataTuple
{
    public BitmapImage Image { get; }

    private readonly IPixelData _pixelData;
    private readonly DicomDataset _dataset;
    
    public DicomDataTuple(string path, int frame = 0)
    {
        _dataset = DicomFile.Open(path).Clone(DicomTransferSyntax.ImplicitVRLittleEndian).Dataset;
        Image = new DicomImage(_dataset).RenderImage(frame).AsClonedBitmap().ToBitmapImage();

        _pixelData = PixelDataFactory.Create(DicomPixelData.Create(_dataset), frame);
    }

    public double GetPixel(int x, int y)
    {
        return _pixelData.GetPixel(x, y) * _dataset.GetSingleValueOrDefault(DicomTag.RescaleSlope, 1.0) + _dataset.GetSingleValueOrDefault(DicomTag.RescaleIntercept, 0);
    }

}