DurationToStringConverter.cs

using System;
using System.Globalization;
using Microsoft.Maui.Controls;
using NeuroAccessMaui.UI.Pages.Contracts.ObjectModel;
using NeuroAccessMaui.UI.Rendering.ContractParameters;
using Waher.Content;
using Waher.Networking.XMPP.Contracts.HumanReadable;
 
namespace NeuroAccessMaui.UI.Converters
{
    public class DurationToStringConverter : IValueConverter
    {
        private static readonly DurationParameterValueRenderer renderer = new DurationParameterValueRenderer();
        public object Convert(object? value, Type targetType, object? parameter, CultureInfo culture)
        {
            Duration Duration;
 
            if (value is Duration Direct)
            {
                Duration = Direct;
            }
            else if (value is string Str && Duration.TryParse(Str, out Duration Parsed))
            {
                Duration = Parsed;
            }
            else
            {
                return string.Empty;
            }
 
            string Language = culture?.Name ?? CultureInfo.CurrentUICulture.Name;
            MarkdownSettings MarkdownSettings = new MarkdownSettings(null, MarkdownType.ForRendering);
 
            try
            {
                return renderer.ToString(Duration, Language, MarkdownSettings).GetAwaiter().GetResult();
            }
            catch
            {
                return Duration.ToString();
            }
        }
 
        public object ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture)
        {
            if (value is string Str && Duration.TryParse(Str, out Duration Parsed))
                return Parsed;
 
            return Duration.Zero;
        }
    }
}