ChatApi/Services/Bot/Structs/Question.cs

namespace ChatApi.Services.Bot.Structs
{
    public class Question
    {
        public string Text { get; }
        public Func<string, bool> Validator { get; }
        public int CountTry { get; set; }
        public Func<Dictionary<int, string>, bool> Condition { get; }
        public Func<string, string> ConvertToSave { get; }

        private const int MaxTentativas = 2;

        public Question(string texto, Func<string, bool> validador, Func<Dictionary<int, string>, bool> condition=null, Func<string,string> convertToSave = null)
        {
            Text = texto;
            Validator = validador;
            CountTry = 0;
            Condition = condition;
            ConvertToSave = convertToSave;
        }

        public bool MustShow(Dictionary<int, string> respostasAnteriores)
        {
            return Condition == null || Condition(respostasAnteriores);
        }

        public string TryToAnswer(string resposta)
        {
            if (Validator(resposta))
            {
                return "";
            }

            CountTry++;
            if (CountTry >= MaxTentativas)
            {
                CountTry = 0;
                return "Não entendi sua resposta. Vamos reiniciar.";
            }

            return "Resposta inválida. Tente novamente.";
        }
    }
}