using System.Globalization;
using Avalonia;
using Avalonia.Data.Converters;
using XSDVisualiser.Core;

namespace XSDVisualiser.Desktop.Converters;

public class OptionalToThicknessConverter : IValueConverter
{
    private static readonly Thickness Required = new(2);
    private static readonly Thickness Optional = new(2);

    public object? Convert(object? value, Type targetType, object? parameter, CultureInfo culture)
    {
        if (value is Occurs occ)
            // We could vary thickness; for now same thickness regardless, reserved for future styling.
            return occ.Min == 0 ? Optional : Required;
        return Required;
    }

    public object? ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture)
    {
        throw new NotSupportedException();
    }
}