using System.Reflection;

namespace AdventOfCodeLibrary.Shared
{
    public class AnswerableListBuilder
    {
        public static IEnumerable<Answerable> AnswerableList()
        {
            Type type = typeof(Answerable);
            IEnumerable<Answerable?> instances =
                Assembly.GetExecutingAssembly().GetTypes()
                .Where(t =>
                        t.GetInterfaces().Contains(type) &&
                        t.GetConstructor(Type.EmptyTypes) != null
                        )
                .Select(t => Activator.CreateInstance(t) as Answerable)
                .Where(i => i != null);

            // try to filter null
            var noneNull = instances.Where(i => i != null);


            return new List<Answerable>();
        }
    }
}