annotations/Azaion.Common/Services/DetectionClassProvider.cs

using System.Windows.Media;
using Azaion.Common.Database;
using Azaion.Common.DTO;
using Azaion.Common.DTO.Config;
using Microsoft.Extensions.Options;

namespace Azaion.Common.Services;

public class DetectionClassProvider : IDetectionClassProvider
{
    private readonly Dictionary<int, DetectionClass> _detectionClasses;

    public DetectionClassProvider(IOptions<AnnotationConfig> annotationConfig)
    {
        _detectionClasses = annotationConfig.Value.DetectionClassesDict;
    }

    public Dictionary<int, DetectionClass> GetDetectionClasses() => _detectionClasses;

    public List<(Color Color, double Confidence)> GetColors(Annotation annotation)
    {
        return annotation.Detections
            .Select(d => (_detectionClasses[d.ClassNumber].Color, d.Confidence))
            .ToList();
    }

    public string GetClassName(Annotation annotation)
    {
        var detectionClasses = annotation.Detections.Select(x => x.ClassNumber).Distinct().ToList();
        return detectionClasses.Count > 1
            ? string.Join(", ", detectionClasses.Select(x => _detectionClasses[x].UIName))
            : _detectionClasses[detectionClasses.FirstOrDefault()].UIName;
    }
}