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

namespace AI.Converters
{
    /// <summary>
    /// 表单数字字段与字符串双向转换（NumericUpDown Value 与 CurrentValue 绑定）
    /// </summary>
    public class FormNumberConverter : IValueConverter
    {
        public object? Convert(object? value, Type targetType, object? parameter, CultureInfo culture)
        {
            if (value is string s && double.TryParse(s?.Trim(), NumberStyles.Any, culture, out var n))
                return n;
            return 0d;
        }

        public object? ConvertBack(object? value, Type targetType, object? parameter, CultureInfo culture)
        {
            if (value is double d)
            {
                return d.ToString(culture);
            }

            if (value is decimal dec)
            {
                return dec.ToString(culture);
            }
            return "0";
        }
    }
}