/*
 * JBoss, Home of Professional Open Source
 * Copyright 2010, Red Hat Inc., and individual contributors as indicated
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.jboss.as.ejb3.deployment.processors.merging;

import org.jboss.as.ee.component.EEApplicationClasses;
import org.jboss.as.ee.component.EEModuleClassDescription;
import org.jboss.as.ee.metadata.ClassAnnotationInformation;
import org.jboss.as.ejb3.component.EJBComponentDescription;
import org.jboss.as.server.deployment.DeploymentUnit;
import org.jboss.as.server.deployment.DeploymentUnitProcessingException;
import org.jboss.as.server.deployment.reflect.DeploymentReflectionIndex;
import org.jboss.metadata.javaee.spec.SecurityRoleRefMetaData;
import org.jboss.metadata.javaee.spec.SecurityRoleRefsMetaData;

import javax.annotation.security.DeclareRoles;

/**
 * Merging process for @DeclareRoles
 *
 * @author Stuart Douglas
 */
public class DeclareRolesMergingProcessor extends AbstractMergingProcessor<EJBComponentDescription> {

    public DeclareRolesMergingProcessor() {
        super(EJBComponentDescription.class);
    }

    @Override
    protected void handleAnnotations(final DeploymentUnit deploymentUnit, final EEApplicationClasses applicationClasses, final DeploymentReflectionIndex deploymentReflectionIndex, final Class<?> componentClass, final EJBComponentDescription description) throws DeploymentUnitProcessingException {
        final EEModuleClassDescription clazz = applicationClasses.getClassByName(componentClass.getName());
        //we only care about annotations on the bean class itself
        if (clazz == null) {
            return;
        }
        final ClassAnnotationInformation<DeclareRoles, String[]> declareRoles = clazz.getAnnotationInformation(DeclareRoles.class);
        if (declareRoles == null) {
            return;
        }
        if (!declareRoles.getClassLevelAnnotations().isEmpty()) {
            description.addDeclaredRoles(declareRoles.getClassLevelAnnotations().get(0));
        }
    }

    @Override
    protected void handleDeploymentDescriptor(final DeploymentUnit deploymentUnit, final DeploymentReflectionIndex deploymentReflectionIndex, final Class<?> componentClass, final EJBComponentDescription description) throws DeploymentUnitProcessingException {
        if (description.getDescriptorData() == null) {
            return;
        }
        final SecurityRoleRefsMetaData roleRefs = description.getDescriptorData().getSecurityRoleRefs();

        if (roleRefs != null) {
            for(SecurityRoleRefMetaData ref : roleRefs) {
                description.addDeclaredRoles(ref.getRoleName());
            }
        }
    }
}