package com.megatim.fdxconsultation.dao.impl.administration;

import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;

import com.bekosoftware.genericdaolayer.dao.impl.AbstractGenericDAO;
import com.bekosoftware.genericdaolayer.dao.tools.RestrictionsContainer;
import com.megatim.commons.tools.CommonsTools;
import com.megatim.fdxcommons.model.enumeration.TypeOperation;
import com.megatim.fdxconsultation.dao.ifaces.administration.UserDAO;
import com.megatim.fdxconsultation.model.administration.Role;
import com.megatim.fdxconsultation.model.administration.User;
import java.util.ArrayList;
import java.util.List;
import java.util.Optional;
import javax.enterprise.context.Dependent;

@Dependent
public class UserDAOImpl extends AbstractGenericDAO<User, Long> implements UserDAO {

    @PersistenceContext(unitName = "fdxConsultationPersistenceUnit")
    protected EntityManager em;

    public UserDAOImpl() {
    }

    @Override
    public EntityManager getEntityManager() {
        return em;
    }

    @Override
    public Class<User> getManagedEntityClass() {
        return (User.class);
    }

    @Override
    public User getById(Long id) {
        Optional<User> optional = em.createQuery("SELECT u from User u"
                + " LEFT JOIN FETCH u.typeFichiers "
                + " WHERE u.id = :id")
                .setParameter("id", id)
                .getResultList()
                .stream()
                .findFirst();;
        return optional.isPresent() ? optional.get() : null;
    }

    @Override
    public User getCurrentUser() {
        RestrictionsContainer requeteur = RestrictionsContainer.newInstance();
        requeteur.addEq("typeOperation", TypeOperation.AJOUTER);
        return filter(requeteur.getPredicats(), null, null, 0, 1).stream().findAny().orElse(null);
    }

    @Override
    public User recuperUtilisateur(String username, String motDePasse) {
        //Variables
        List<User> resutlats = null;
        User user = null;
        boolean isCorrect = false;
        RestrictionsContainer requeteur = RestrictionsContainer.newInstance();

        //On construit la requete
        requeteur.addEq("userName", username);
        requeteur.addEq("typeOperation", TypeOperation.AJOUTER);

        //On execute la requte
        resutlats = filter(requeteur.getPredicats(), null, null, 0, 1);

        //Si liste non vide
        if (resutlats != null && !resutlats.isEmpty()) {

            try {

                //On recupere le user
                user = resutlats.get(0);

                //On verifie si le mot de passe est correct
                isCorrect = CommonsTools.validerMotDePasse(motDePasse, user.getPwd());

                //Si incorrect
                if (!isCorrect) {

                    //Utilisateur non trouvé
                    user = null;

                }

            } catch (Exception ex) {

                //On affiche l'erreur
                ex.printStackTrace();

            }

        }

        return user;
    }

    @Override
    public User recuperUtilisateur(String username) {
        Optional<User> optional = em.createQuery("SELECT u from User u"
                + " LEFT JOIN FETCH u.typeFichiers "
                + " LEFT JOIN FETCH u.participants "
                + " WHERE u.userName = :username AND u.typeOperation = :typeOperation")
                .setParameter("username", username)
                .setParameter("typeOperation", TypeOperation.AJOUTER)
                .getResultList()
                .stream()
                .findFirst();
        return optional.isPresent() ? optional.get() : null;
    }

    @Override
    public List<User> obtenirListeUtilisateursRole(Role role) {

        //variables
        List<User> utilisateurs = null;
        RestrictionsContainer requeteur = RestrictionsContainer.newInstance();

        //On construit la requete
        requeteur.addEq("role", role);
        requeteur.addEq("typeOperation", TypeOperation.AJOUTER);

        //On execute la requte
        utilisateurs = filter(requeteur.getPredicats(), null, null, 0, -1);

        //Si liste null
        if (utilisateurs == null) {

            //On crée une instance vide
            utilisateurs = new ArrayList<User>();

        }

        return utilisateurs;
    }
}