using ChatApi.Services.Classifier;
using ChatApi.Services.ClassifyHandlers;

namespace ChatApi.Services
{
    public enum EnumClassification
    {
        Company=0,
        Estimate=1,
        BotRHCall = 2,
        Chat = 3,
        CantDetect=4
    }

    /// <summary>
    /// enum
    /// </summary>
    public class TextClassifier
    {
        private readonly TextFilter _textFilter;
        private readonly ClassifierPersistence _classifierPersistence;

        public TextClassifier(TextFilter textFilter, ClassifierPersistence classifierPersistence)
        {
            _textFilter = textFilter;
            _classifierPersistence = classifierPersistence;
        }
        public async Task<EnumClassification> ClassifyQuestion(string sessionId, string question)
        {
            var state = _classifierPersistence.GetState(sessionId);

            if (state!=null && (state.ClassificationType == EnumClassificationType.Stay))
            {
                return state.Classification;
            }
            else
            {
                var classifyCompany = new ClassifyCompany();
                var classifyChat = new ClassifyChat();
                var botChat = new ClassifyBotRHCall();

                classifyCompany
                    .SetNext(botChat)
                    .SetNext(classifyChat);

                var classify = classifyCompany.Handle(question);

                _classifierPersistence.SaveState(new ClassifierSate
                {
                    Id = sessionId,
                    UsuarioId = sessionId,
                    Classification = classify,
                    DhInicio = DateTime.Now,
                    ClassificationType = botChat.MyClassification == classify ? EnumClassificationType.Stay : EnumClassificationType.Free
                });
                return classify;
            }
        }
    }
}