package com.megatim.apifdxweb.core.impl.administration;

import com.bekosoftware.genericdaolayer.dao.ifaces.GenericDAO;
import com.bekosoftware.genericmanagerlayer.core.impl.AbstractGenericManager;
import com.google.common.hash.Hashing;
import com.megatim.apifdxweb.core.ifaces.administration.TokenGenerationManager;
import com.megatim.apifdxweb.dao.ifaces.administration.TokenGenerationDAO;
import com.megatim.apifdxweb.model.administration.TokenGeneration;
import com.megatim.apifdxweb.model.administration.User;
import com.megatim.apifdxweb.model.administration.enums.StatutTokenGeneration;
import java.nio.charset.StandardCharsets;
import java.time.LocalDateTime;
import javax.enterprise.context.Dependent;
import javax.inject.Inject;
import javax.transaction.Transactional;

@Dependent
public class TokenGenerationManagerImpl extends AbstractGenericManager<TokenGeneration, Long> implements TokenGenerationManager {

    @Inject
    protected TokenGenerationDAO dao;

    public TokenGenerationManagerImpl() {
    }

    @Override
    public GenericDAO<TokenGeneration, Long> getDao() {
        return dao;
    }

    @Override
    public String getEntityIdName() {
        return "id";
    }

    @Override
    @Transactional
    public void createTokenGeneration(User user, String token, int validite) {
        TokenGeneration currentTokenGeneration = dao.getCurrentGeneration(user.getUserName());
        if (currentTokenGeneration != null) {
            currentTokenGeneration.setStatutTokenGeneration(StatutTokenGeneration.ARCHIVE);
            dao.update(currentTokenGeneration.getId(), currentTokenGeneration);
        }

        TokenGeneration tokenGeneration = new TokenGeneration();
        tokenGeneration.setDateGeneration(LocalDateTime.now());
        tokenGeneration.setUser(user);
        tokenGeneration.setToken(getHash(token));
        tokenGeneration.setValidite(validite);
        tokenGeneration.setStatutTokenGeneration(StatutTokenGeneration.EN_COURS);

        dao.save(tokenGeneration);
    }

    @Override
    public boolean isTokenCorrect(String codeParticipant, String token) {
        TokenGeneration currentTokenGeneration = dao.getCurrentGeneration(codeParticipant);
        return currentTokenGeneration != null && currentTokenGeneration.getToken().equals(getHash(token));
    }

    private String getHash(String value) {
        return Hashing.sha256().hashString(value, StandardCharsets.UTF_8).toString();
    }

}