annotations/Azaion.Annotator/DTO/FormState.cs

using System.Collections.ObjectModel;
using System.IO;
using System.Windows;

namespace Azaion.Annotator.DTO;

public class FormState
{
    public MediaFileInfo? CurrentMedia { get; set; }
    public string VideoName => string.IsNullOrEmpty(CurrentMedia?.Name)
        ? ""
        : Path.GetFileNameWithoutExtension(CurrentMedia.Name).Replace(" ", "");

    public string CurrentMrl { get; set; }
    public Size CurrentVideoSize { get; set; }
    public TimeSpan CurrentVideoLength { get; set; }

    public bool BackgroundShown { get; set; }
    public int CurrentVolume { get; set; } = 100;
    public ObservableCollection<AnnotationResult> AnnotationResults { get; set; } = [];
    public WindowsEnum ActiveWindow { get; set; }

    public string GetTimeName(TimeSpan? ts) => $"{VideoName}_{ts:hmmssf}";

    public TimeSpan? GetTime(string name)
    {
        var timeStr = name.Split("_").LastOrDefault();
        if (string.IsNullOrEmpty(timeStr) || timeStr.Length < 6)
            return null;

        //For some reason, TimeSpan.ParseExact doesn't work on every platform.
        if (!int.TryParse(timeStr[0..1], out var hours))
            return null;
        if (!int.TryParse(timeStr[1..3], out var minutes))
            return null;
        if (!int.TryParse(timeStr[3..5], out var seconds))
            return null;
        if (!int.TryParse(timeStr[5..6], out var milliseconds))
            return null;
        return new TimeSpan(0, hours, minutes, seconds, milliseconds * 100);
    }
}