annotations/Azaion.Annotator/DTO/AnnotationResult.cs

using System.Windows.Media;
using Azaion.Annotator.Extensions;
using Newtonsoft.Json;

namespace Azaion.Annotator.DTO;

public class AnnotationResult
{
    private readonly Config _config = null!;

    [JsonProperty(PropertyName = "f")]
    public string   Image   { get; set; } = null!;

    [JsonProperty(PropertyName = "t")]
    public TimeSpan Time                   { get; set; }

    public double   Lat                    { get; set; }
    public double   Lon                    { get; set; }
    public List<Detection> Detections      { get; set; } = new();

    #region For Display in the grid

    [JsonIgnore]
    //For XAML Form
    public string TimeStr => $"{Time:h\\:mm\\:ss}";

    private List<int>? _detectionClasses = null!;

    //For Form
    [JsonIgnore]
    public string ClassName
    {
        get
        {
            if (Detections.Count == 0)
                return "";
            _detectionClasses ??= Detections.Select(x => x.ClassNumber).Distinct().ToList();

            return _detectionClasses.Count > 1
                ? string.Join(", ", _detectionClasses.Select(x => _config.AnnotationClassesDict[x].ShortName))
                : _config.AnnotationClassesDict[_detectionClasses.FirstOrDefault()].Name;
        }
    }


    [JsonIgnore]
    public Color ClassColor1 => GetAnnotationClass(0);
    [JsonIgnore]
    public Color ClassColor2 => GetAnnotationClass(1);
    [JsonIgnore]
    public Color ClassColor3 => GetAnnotationClass(2);
    [JsonIgnore]
    public Color ClassColor4 => GetAnnotationClass(3);

    private Color GetAnnotationClass(int colorNumber)
    {
        if (Detections.Count == 0)
            return (-1).ToColor();

        _detectionClasses ??= Detections.Select(x => x.ClassNumber).Distinct().ToList();

        return colorNumber >= _detectionClasses.Count
            ? _config.AnnotationClassesDict[_detectionClasses.LastOrDefault()].Color
            : _config.AnnotationClassesDict[_detectionClasses[colorNumber]].Color;
    }


    #endregion
    
    public AnnotationResult() { }
    public AnnotationResult(TimeSpan time, string timeName, List<Detection> detections, Config config)
    {
        _config = config;
        Detections = detections;
        Time = time;
        Image = $"{timeName}.jpg";
    }
}