/*
 * 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.common.monitor.alerts.config;

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.AppdefEntityConstants;
import org.hyperic.hq.appdef.shared.AppdefEntityID;
import org.hyperic.hq.appdef.shared.AppdefEntityTypeID;
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.EventsBoss;
import org.hyperic.hq.events.shared.AlertDefinitionValue;
import org.hyperic.hq.ui.Constants;
import org.hyperic.hq.ui.action.BaseActionNG;
import org.hyperic.hq.ui.exception.ParameterNotFoundException;
import org.hyperic.hq.ui.util.RequestUtils;
import org.hyperic.util.pager.PageControl;
import org.hyperic.util.pager.PageList;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

/**
 * List all alert definitions for this entity
 * 
 */
@Component("listDefinitionsActionNG")
public class ListDefinitionsActionNG extends BaseActionNG implements
		ViewPreparer {

	private final Log log = LogFactory.getLog(ListDefinitionsActionNG.class
			.getName());
	@Autowired
	private EventsBoss eventsBoss;

	/**
	 * Retrieve this data and store it in request attributes.
	 */
	public void execute(TilesRequestContext tilesContext,
			AttributeContext attributeContext) {
		log.trace("in ListDefinitionAction");
		request = getServletRequest();

		Integer sessionId;
		try {
			sessionId = RequestUtils.getSessionId(request);

			PageControl pc = RequestUtils.getPageControl(request);

			AppdefEntityID appEntId;
			PageList<AlertDefinitionValue> alertDefs;
			try {
				appEntId = RequestUtils.getEntityTypeId(request);
				request.setAttribute("section",
						AppdefEntityConstants.typeToString(appEntId.getType()));
				alertDefs = eventsBoss
						.findAlertDefinitions(sessionId.intValue(),
								(AppdefEntityTypeID) appEntId, pc);
			} catch (ParameterNotFoundException e) {
				appEntId = RequestUtils.getEntityId(request);
				try {
					alertDefs = eventsBoss.findAlertDefinitions(
							sessionId.intValue(), appEntId, pc);
				} catch (PermissionException pe) {
					// user cant manage alerts... set empty list
					alertDefs = new PageList<AlertDefinitionValue>();
				}
			}
			request.setAttribute(Constants.RESOURCE_ATTR,
					RequestUtils.getResource(request));
			request.setAttribute(Constants.RESOURCE_OWNER_ATTR,
					request.getAttribute(Constants.RESOURCE_OWNER_ATTR));
			request.setAttribute(Constants.RESOURCE_MODIFIER_ATTR,
					request.getAttribute(Constants.RESOURCE_MODIFIER_ATTR));

			attributeContext.putAttribute(Constants.RESOURCE_ATTR,
					new Attribute(RequestUtils.getResource(request)));
			attributeContext.putAttribute(
					Constants.RESOURCE_OWNER_ATTR,
					new Attribute(request
							.getAttribute(Constants.RESOURCE_OWNER_ATTR)));
			attributeContext.putAttribute(
					Constants.RESOURCE_MODIFIER_ATTR,
					new Attribute(request
							.getAttribute(Constants.RESOURCE_MODIFIER_ATTR)));

			request.setAttribute(Constants.ALERT_DEFS_ATTR, alertDefs);
			request.setAttribute("DefinitionsCount", alertDefs.getTotalSize());
		} catch (ServletException e) {
			log.error(e);
		} catch (SessionNotFoundException e) {
			log.error(e);
		} catch (SessionTimeoutException e) {
			log.error(e);
		} catch (PermissionException e) {
			log.error(e);
		}
	}
}