/*
 * NOTE: This copyright does *not* cover user programs that use HQ
 * program services by normal system calls through the application
 * program interfaces provided as part of the Hyperic Plug-in Development
 * Kit or the Hyperic Client Development Kit - this is merely considered
 * normal use of the program, and does *not* fall under the heading of
 * "derived work".
 * 
 * Copyright (C) [2004, 2005, 2006], Hyperic, Inc.
 * This file is part of HQ.
 * 
 * HQ is free software; you can redistribute it and/or modify
 * it under the terms version 2 of the GNU General Public License as
 * published by the Free Software Foundation. This program 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 General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA.
 */

package org.hyperic.hq.ui.action.resource.platform.monitor.visibility;

import java.rmi.RemoteException;
import java.util.List;

import javax.servlet.ServletException;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.tiles.Attribute;
import org.apache.tiles.AttributeContext;
import org.apache.tiles.context.TilesRequestContext;
import org.apache.tiles.preparer.ViewPreparer;
import org.hyperic.hq.appdef.shared.AppdefEntityID;
import org.hyperic.hq.appdef.shared.AppdefEntityNotFoundException;
import org.hyperic.hq.appdef.shared.AppdefResourceValue;
import org.hyperic.hq.auth.shared.SessionNotFoundException;
import org.hyperic.hq.auth.shared.SessionTimeoutException;
import org.hyperic.hq.authz.shared.PermissionException;
import org.hyperic.hq.bizapp.shared.MeasurementBoss;
import org.hyperic.hq.bizapp.shared.uibeans.ResourceTypeDisplaySummary;
import org.hyperic.hq.ui.Constants;
import org.hyperic.hq.ui.action.BaseActionNG;
import org.hyperic.hq.ui.action.resource.common.monitor.visibility.ProblemMetricsDisplayFormNG;
import org.hyperic.hq.ui.util.RequestUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

/**
 * 
 * Fetch the children resources for the platform
 */
@Component("platformListChildrenActionNG")
public class ListChildrenActionNG extends BaseActionNG implements ViewPreparer {

	private final Log log = LogFactory.getLog(ListChildrenActionNG.class
			.getName());

	@Autowired
	private MeasurementBoss measurementBoss;

	/**
	 * Returns a <code>List</code> of <code>ResourceTypeSummaryBean</code>
	 * objects representing health summaries of the child resources of the
	 * currently viewed resource.
	 * 
	 * @param request
	 *            the current http request
	 * @param boss
	 *            the <code>MeasurementBoss</code> used to find metric data
	 * @param sessionId
	 *            the <code>int</code> representing the user's bizapp session
	 * @param entityId
	 *            an <code>AppdefEntityID</code> identifying the currently
	 *            viewed resource
	 * @param isInternal
	 *            a boolean indicating whether we are asking for internal or
	 *            deployed child resources
	 * @return List
	 */
	protected List<ResourceTypeDisplaySummary> getChildHealthSummaries(
			int sessionId, AppdefEntityID entityId, boolean isInternal)
			throws PermissionException, AppdefEntityNotFoundException,
			RemoteException, SessionNotFoundException, SessionTimeoutException,
			ServletException {

		if (isInternal) {
			// cheat and treat platform services as internal so as to not
			// disturb the whackadocious action class hierarchy
			return measurementBoss.findSummarizedPlatformServiceCurrentHealth(
					sessionId, entityId);
		}

		log.trace("getting deployed server healths for resource [" + entityId
				+ "]");

		return measurementBoss.findSummarizedServerCurrentHealth(sessionId,
				entityId);
	}

	public void execute(TilesRequestContext tilesContext,
			AttributeContext attributeContext) {
		AppdefResourceValue resource = RequestUtils
				.getResource(getServletRequest());

		if (resource == null) {
			addActionError(Constants.ERR_RESOURCE_NOT_FOUND);
			return;
		}

		AppdefEntityID entityId = resource.getEntityId();

		try {
			int sessionId = RequestUtils.getSessionId(getServletRequest())
					.intValue();

			Attribute attIsInternal = attributeContext
					.getAttribute(Constants.CTX_INTERNAL);
			Boolean isInternal = new Boolean((String) attIsInternal.getValue());

			List<ResourceTypeDisplaySummary> internalHealths = getChildHealthSummaries(
					sessionId, entityId, isInternal.booleanValue());

			tilesContext.getRequestScope().put(Constants.CTX_SUMMARIES,
					internalHealths);
			
			ProblemMetricsDisplayFormNG probForm = new ProblemMetricsDisplayFormNG();
			tilesContext.getRequestScope().put("probForm", probForm);
		} catch (ServletException e) {
			log.error(e);
		} catch (AppdefEntityNotFoundException e) {
			log.error(e);
		} catch (SessionNotFoundException e) {
			log.error(e);
		} catch (SessionTimeoutException e) {
			log.error(e);
		} catch (PermissionException e) {
			log.error(e);
		} catch (RemoteException e) {
			log.error(e);
		}

	}
}