package fr.istic.taa.jaxrs.DAO;

import fr.istic.taa.jaxrs.metier.Question;
import jakarta.persistence.EntityTransaction;
import fr.istic.taa.jaxrs.metier.Quizz;

public class QuizzDAO extends AbstractJpaDao<Integer, Quizz> {
    public QuizzDAO(){
        super();
        this.setClass(Quizz.class);
    }

    public void deleteAllQuestion(int quizzId) {
        EntityTransaction t = em.getTransaction();
        try {
            if (!t.isActive()) t.begin();
            Quizz quizz = em.find(Quizz.class, quizzId);
            if (quizz != null) {
                quizz.getQuestions().clear();
                em.merge(quizz);
            }
            t.commit();
        } catch (Exception e) {
            if (t.isActive()) t.rollback();
            e.printStackTrace();
            throw e;
        }
    }

    public void addQuestion(int quizzId, int questionId) {
        EntityTransaction t = em.getTransaction();
        try {
            if (!t.isActive()) t.begin();
            Quizz quizz = em.find(Quizz.class, quizzId);
            Question question = em.find(Question.class, questionId);

            if (quizz != null && question != null) {
                quizz.getQuestions().add(question);
                em.merge(quizz);
            }
            t.commit();
        } catch (Exception e) {
            if (t.isActive()) t.rollback();
            e.printStackTrace();
            throw e;
        }
    }
}