/*-
 * ============LICENSE_START=======================================================
 * ECOMP Policy Engine
 * ================================================================================
 * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
 * ================================================================================
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * ============LICENSE_END=========================================================
 */

package org.openecomp.policy.daoImp;

import java.util.List;

import org.hibernate.Criteria;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.criterion.Conjunction;
import org.hibernate.criterion.Disjunction;
import org.hibernate.criterion.Restrictions;
import org.openecomp.policy.dao.PolicyRolesDao;
import org.openecomp.policy.rest.jpa.PolicyRoles;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import org.openecomp.policy.xacml.api.XACMLErrorConstants;

import org.openecomp.policy.common.logging.flexlogger.FlexLogger;
import org.openecomp.policy.common.logging.flexlogger.Logger;

@Service("PolicyRolesDao")
public class PolicyRolesDaoImpl implements PolicyRolesDao{
	private static final Logger logger = FlexLogger.getLogger(PolicyRolesDaoImpl.class);
	@Autowired
	SessionFactory sessionfactory;
	
	@SuppressWarnings("unchecked")
	@Override
	public List<PolicyRoles> getUserRoles() {
		Session session = sessionfactory.openSession();
		Transaction tx = session.beginTransaction();
		List<PolicyRoles> rolesData = null;
		try {
			Criteria cr = session.createCriteria(PolicyRoles.class);		
			Disjunction disjunction = Restrictions.disjunction(); 
			Conjunction conjunction1  = Restrictions.conjunction();
			conjunction1.add(Restrictions.eq("role", "admin"));
			Conjunction conjunction2  = Restrictions.conjunction();
			conjunction2.add(Restrictions.eq("role", "editor"));	
			Conjunction conjunction3  = Restrictions.conjunction();
			conjunction3.add(Restrictions.eq("role", "guest"));	
			disjunction.add(conjunction1);
			disjunction.add(conjunction2);
			disjunction.add(conjunction3);
			rolesData = cr.add(disjunction).list();
			tx.commit();
		} catch (Exception e) {
			logger.error(XACMLErrorConstants.ERROR_PROCESS_FLOW + "Error While Querying PolicyRoles Table"+e);	
		}finally{
			try{
				session.close();
			}catch(Exception e1){
				logger.error(XACMLErrorConstants.ERROR_PROCESS_FLOW + "Error While Closing Connection/Statement"+e1);
			}
		}
		return rolesData;
	}

	@Override
	public void save(PolicyRoles role) {
		Session session = sessionfactory.openSession();
		Transaction tx = session.beginTransaction();
		try {
			session.persist(role);
			tx.commit();	
		}catch(Exception e){
			logger.error(XACMLErrorConstants.ERROR_PROCESS_FLOW + "Error While Saving PolicyRoles Table"+e);	
		}finally{
			try{
				session.close();
			}catch(Exception e1){
				logger.error(XACMLErrorConstants.ERROR_PROCESS_FLOW + "Error While Closing Connection/Statement"+e1);
			}
		}
		
	}

	@Override
	public void delete(PolicyRoles role) {
		Session session = sessionfactory.openSession();
		Transaction tx = session.beginTransaction();
		try {
			session.delete(role);
			tx.commit();	
		}catch(Exception e){
			logger.error(XACMLErrorConstants.ERROR_PROCESS_FLOW + "Error While Deleting PolicyRoles Table"+e);	
		}finally{
			try{
				session.close();
			}catch(Exception e1){
				logger.error(XACMLErrorConstants.ERROR_PROCESS_FLOW + "Error While Closing Connection/Statement"+e1);
			}
		}
		
	}

	@Override
	public void update(PolicyRoles role) {
		Session session = sessionfactory.openSession();
		Transaction tx = session.beginTransaction();
		try {
			session.update(role);
			tx.commit();	
		}catch(Exception e){
			logger.error(XACMLErrorConstants.ERROR_PROCESS_FLOW + "Error While Updating PolicyRoles Table"+e);	
		}finally{
			try{
				session.close();
			}catch(Exception e1){
				logger.error(XACMLErrorConstants.ERROR_PROCESS_FLOW + "Error While Closing Connection/Statement"+e1);
			}
		}
		
	}

	@SuppressWarnings("unchecked")
	@Override
	public List<PolicyRoles> getRoles() {
		Session session = sessionfactory.openSession();
		Transaction tx = session.beginTransaction();
		List<PolicyRoles> rolesData = null;
		try {
			Criteria cr = session.createCriteria(PolicyRoles.class);		
			rolesData = cr.list();
			tx.commit();
		} catch (Exception e) {
			logger.error(XACMLErrorConstants.ERROR_PROCESS_FLOW + "Error While Querying PolicyRoles Table"+e);	
		}finally{
			try{
				session.close();
			}catch(Exception e1){
				logger.error(XACMLErrorConstants.ERROR_PROCESS_FLOW + "Error While Closing Connection/Statement"+e1);
			}
		}
		return rolesData;
	}

}