namespace Gs.Toolbox
{
    public static class TypeHelper
    {
        public static bool IsPrimitiveExtended(Type type, bool includeNullables = true, bool includeEnums = false)
        {
            if (IsPrimitiveExtendedInternal(type, includeEnums))
            {
                return true;
            }

            if (includeNullables && IsNullable(type) && type.GenericTypeArguments.Any())
            {
                return IsPrimitiveExtendedInternal(type.GenericTypeArguments[0], includeEnums);
            }

            return false;
        }
        public static bool IsNullable(Type type)
        {
            return type.IsGenericType && type.GetGenericTypeDefinition() == typeof(Nullable<>);
        }
        private static bool IsPrimitiveExtendedInternal(Type type, bool includeEnums)
        {
            if (type.IsPrimitive)
            {
                return true;
            }

            if (includeEnums && type.IsEnum)
            {
                return true;
            }

            return type == typeof(string) ||
                   type == typeof(decimal) ||
                   type == typeof(DateTime) ||
                   type == typeof(DateTimeOffset) ||
                   type == typeof(TimeSpan) ||
                   type == typeof(Guid);
        }

    }
}