using Microsoft.AspNetCore.Components.Forms;

namespace BlazorAdmin.Shared
{
    /// <summary>
    /// This is needed until 5.0 ships with native support
    /// https://www.pragimtech.com/blog/blazor/inputselect-does-not-support-system.int32/
    /// </summary>
    /// <typeparam name="TValue"></typeparam>
    public class CustomInputSelect<TValue> : InputSelect<TValue>
    {
        protected override bool TryParseValueFromString(string value, out TValue result,
            out string validationErrorMessage)
        {
            if (typeof(TValue) == typeof(int))
            {
                if (int.TryParse(value, out var resultInt))
                {
                    result = (TValue)(object)resultInt;
                    validationErrorMessage = null;
                    return true;
                }
                else
                {
                    result = default;
                    validationErrorMessage =
                        $"The selected value {value} is not a valid number.";
                    return false;
                }
            }
            else
            {
                return base.TryParseValueFromString(value, out result,
                    out validationErrorMessage);
            }
        }
    }
}