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

namespace XSDVisualiser.Desktop.Converters;

public class OptionalToBorderBrushConverter : IValueConverter
{
    private static readonly IBrush RequiredBrush = new SolidColorBrush(Color.FromRgb(0x33, 0x99, 0x33));
    private static readonly IBrush OptionalBrush = new SolidColorBrush(Color.FromRgb(0xCC, 0x66, 0x33));

    public object? Convert(object? value, Type targetType, object? parameter, CultureInfo culture)
    {
        if (value is Occurs occ)
            // Optional if minOccurs == 0
            return occ.Min == 0 ? OptionalBrush : RequiredBrush;
        return RequiredBrush;
    }

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