annotations/Azaion.Common/DTO/AnnotationResult.cs

using System.Windows.Media;
using Azaion.Common.Database;
using Azaion.Common.Extensions;
using Newtonsoft.Json;

namespace Azaion.Common.DTO;

public class AnnotationResult
{
    public Annotation Annotation { get; set; }

    public string           ImagePath   { get; set; }
    public string           TimeStr     { get; set; }

    public string           ClassName   { get; set; }

    public Color            ClassColor0 { get; set; }
    public Color            ClassColor1 { get; set; }
    public Color            ClassColor2 { get; set; }
    public Color            ClassColor3 { get; set; }


    public AnnotationResult(Dictionary<int, DetectionClass> allDetectionClasses, Annotation annotation)
    {
        Annotation = annotation;
        var detections = annotation.Detections.ToList();

        Color GetAnnotationClass(List<int> detectionClasses, int colorNumber)
        {
            if (detections.Count == 0)
                return (-1).ToColor();

            return colorNumber >= detectionClasses.Count
                ? allDetectionClasses[detectionClasses.LastOrDefault()].Color
                : allDetectionClasses[detectionClasses[colorNumber]].Color;
        }

        TimeStr = $"{annotation.Time:h\\:mm\\:ss}";
        ImagePath = annotation.ImagePath;

        var detectionClasses = detections.Select(x => x.ClassNumber).Distinct().ToList();

        ClassName = detectionClasses.Count > 1
            ? string.Join(", ", detectionClasses.Select(x => allDetectionClasses[x].ShortName))
            : allDetectionClasses[detectionClasses.FirstOrDefault()].Name;

        ClassColor0 = GetAnnotationClass(detectionClasses, 0);
        ClassColor1 = GetAnnotationClass(detectionClasses, 1);
        ClassColor2 = GetAnnotationClass(detectionClasses, 2);
        ClassColor3 = GetAnnotationClass(detectionClasses, 3);
    }
}