/*
 * Copyright 2016 Red Hat, Inc. and/or its affiliates
 * and other contributors as indicated by the @author tags.
 *
 * 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.
 */
package org.keycloak.subsystem.server.extension;

import org.jboss.as.ee.component.EEModuleDescription;
import org.jboss.as.server.deployment.DeploymentPhaseContext;
import org.jboss.as.server.deployment.DeploymentUnit;
import org.jboss.as.server.deployment.DeploymentUnitProcessingException;
import org.jboss.as.server.deployment.DeploymentUnitProcessor;
import org.jboss.msc.service.ServiceName;
import org.jboss.msc.service.ServiceTarget;

/**
 * DUP responsible for setting the web context of a Keycloak auth server.
 *
 * @author Stan Silvert ssilvert@redhat.com (C) 2014 Red Hat Inc.
 */
public class KeycloakServerDeploymentProcessor implements DeploymentUnitProcessor {

    private static final ServiceName cacheContainerService = ServiceName.of("jboss", "infinispan", "keycloak");

    @Override
    public void deploy(DeploymentPhaseContext phaseContext) throws DeploymentUnitProcessingException {
        DeploymentUnit deploymentUnit = phaseContext.getDeploymentUnit();
        KeycloakAdapterConfigService config = KeycloakAdapterConfigService.INSTANCE;
        String deploymentName = deploymentUnit.getName();

        if (!config.isKeycloakServerDeployment(deploymentName)) {
            return;
        }

        final EEModuleDescription description = deploymentUnit.getAttachment(org.jboss.as.ee.component.Attachments.EE_MODULE_DESCRIPTION);
        String webContext = config.getWebContext();
        if (webContext == null) {
            throw new DeploymentUnitProcessingException("Can't determine web context/module for Keycloak Server");
        }
        description.setModuleName(webContext);

        addInfinispanCaches(phaseContext);
    }

    private void addInfinispanCaches(DeploymentPhaseContext context) {
        if (context.getServiceRegistry().getService(cacheContainerService) != null) {
            ServiceTarget st = context.getServiceTarget();
            st.addDependency(cacheContainerService);
            st.addDependency(cacheContainerService.append("realms"));
            st.addDependency(cacheContainerService.append("users"));
            st.addDependency(cacheContainerService.append("sessions"));
            st.addDependency(cacheContainerService.append("offlineSessions"));
            st.addDependency(cacheContainerService.append("loginFailures"));
        }
    }

    @Override
    public void undeploy(DeploymentUnit du) {
    }
}
