/**
 * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

package eu.smartlm.abs.portal.view.portlet;

import java.io.IOException;
import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

import javax.portlet.ActionRequest;
import javax.portlet.ActionResponse;
import javax.portlet.Event;
import javax.portlet.EventRequest;
import javax.portlet.EventResponse;
import javax.portlet.GenericPortlet;
import javax.portlet.PortletException;
import javax.portlet.PortletRequestDispatcher;
import javax.portlet.PortletSession;
import javax.portlet.RenderRequest;
import javax.portlet.RenderResponse;

import com.liferay.portal.kernel.log.Log;
import com.liferay.portal.kernel.log.LogFactoryUtil;

import eu.smartlm.abs.portal.security.login.controller.LoginController;
import eu.smartlm.abs.portal.util.StringUtil;
import eu.smartlm.abs.portal.view.event.EventData;
import eu.smartlm.abs.portal.view.portlet.model.SmartLMUsageRecordTypeSorted;
import eu.smartlm.schemas.x2009.x06.urec.LicenseResourceType;
import eu.smartlm.schemas.x2009.x06.urec.SmartLMUsageRecordType;


/**
 * Shows the results of a query to the accounting and billing system. Both in graphs done by
 * JFreeChart and in a informative table.
 * 
 * @author David Garcia Perez-CESGA
 * 
 */
public class ResultPortlet extends GenericPortlet {
	private String type;
	public static String GRAPH_DONE = "graphDone"; 
	public static String GRAPH_DONE_BILLING = "graphDoneBilling";
	public static String GRAPH = "graph";
	public List<List<String>> usageInformationList = new ArrayList<List<String>>();
	protected String editJSP;
	protected String helpJSP;
	protected String viewJSP;
	private static Log _log = LogFactoryUtil.getLog(ResultPortlet.class);
	private DecimalFormat twoPlaces = new DecimalFormat("0.00");

	private EventData eventData = new EventData(false, null, new HashSet<SmartLMUsageRecordType>(), type, "", "");


	@Override
	public void init() throws PortletException {
		editJSP = getInitParameter("edit-jsp");
		helpJSP = getInitParameter("help-jsp");
		viewJSP = getInitParameter("view-jsp");
		type = getInitParameter("type");
	}

	@Override
	public void doDispatch(RenderRequest renderRequest, RenderResponse renderResponse) throws IOException, PortletException {

		String jspPage = renderRequest.getParameter("jspPage");

		if (jspPage != null) {
			include(jspPage, renderRequest, renderResponse);
		} else {
			super.doDispatch(renderRequest, renderResponse);
		}
	}

	@Override
	public void doEdit(RenderRequest renderRequest, RenderResponse renderResponse) throws IOException, PortletException {

		if (renderRequest.getPreferences() == null) {
			super.doEdit(renderRequest, renderResponse);
		} else {
			include(editJSP, renderRequest, renderResponse);
		}
	}

	@Override
	public void doHelp(RenderRequest renderRequest, RenderResponse renderResponse) throws IOException, PortletException {

		include(helpJSP, renderRequest, renderResponse);
	}

	@Override
	public void doView(RenderRequest renderRequest, RenderResponse renderResponse) throws IOException, PortletException {		
		PortletSession session = renderRequest.getPortletSession();
		
		// We show information if the user is logged in.
		int status = LoginController.LOGGED_OUT;
		Integer loginStatus = (Integer) session.getAttribute(LoginController.LOGIN_EVENT, PortletSession.APPLICATION_SCOPE);
		if(loginStatus != null) status = loginStatus.intValue();
		
		session.setAttribute("usageInformationList", usageInformationList);
		if(eventData.isRepresent() && eventData.getGraph() != null && status == LoginController.LOGGED_IN) {
			session.setAttribute("graph", eventData.getGraph(), PortletSession.APPLICATION_SCOPE);
			session.setAttribute("eventpdf", eventData, PortletSession.APPLICATION_SCOPE);
			session.setAttribute("representGraph", true);
			session.setAttribute("eventdata", eventData);
		} 
		else 
			session.setAttribute("representGraph", false);
		
		include(viewJSP, renderRequest, renderResponse);
	}

	@Override
	public void processAction(ActionRequest actionRequest, ActionResponse actionResponse) throws IOException, PortletException {
		
	}
	
	@Override
	public void processEvent(EventRequest eventRequest, EventResponse eventResponse) {
		Event event = eventRequest.getEvent();
		
		// We check if we need to represent the Graph.
		if(type.equals(QueryPortlet.TYPE_ACCOUNTING)) {
			if(event.getName().equals(ResultPortlet.GRAPH_DONE)) {
				eventData = (EventData) event.getValue();
				prepareUsageInformationList(type);
			}
		}
		else if (type.equals(QueryPortlet.TYPE_BILLING)) {
			if(event.getName().equals(ResultPortlet.GRAPH_DONE_BILLING)) {
				eventData = (EventData) event.getValue();
				double total = prepareUsageInformationList(type);
				String totalString = twoPlaces.format(total);
				eventData.setTotal(totalString);
			}
		}
	}

	protected void include(String path, RenderRequest renderRequest, RenderResponse renderResponse) throws IOException, PortletException {

		PortletRequestDispatcher portletRequestDispatcher = getPortletContext().getRequestDispatcher(path);

		if (portletRequestDispatcher == null) {
			_log.error(path + " is not a valid include");
		} else {
			portletRequestDispatcher.include(renderRequest, renderResponse);
		}
	}
	
	private double prepareUsageInformationList(String type) {
		// First we empty any list that can exists
		usageInformationList.clear();
		// We retrieve the usage  records
		Set<SmartLMUsageRecordType> usageRecords = eventData.getUsageRecords();
		ArrayList<SmartLMUsageRecordTypeSorted> records = new ArrayList<SmartLMUsageRecordTypeSorted>();
		
		for(SmartLMUsageRecordType usageRecord : usageRecords) {
			SmartLMUsageRecordTypeSorted record = new SmartLMUsageRecordTypeSorted(usageRecord);
			records.add(record);
		}
		
		Collections.sort(records);
		
		// We create the first line of information in the table
		List<String> line = new ArrayList<String>();
		line.add("User"); line.add("Product"); line.add("Start Time"); line.add("End Time"); line.add("AccountingGroup"); //line.add("Project"); //line.add("Host"); line.add("SubmitHost");
		if(type.equals(QueryPortlet.TYPE_BILLING)) line.add("Charge");
		usageInformationList.add(line);
		
		double total = 0.0;
		for(SmartLMUsageRecordTypeSorted record: records) {
			SmartLMUsageRecordType usageRecord = record.getUsagerecord();
			String user = StringUtil.sortString(usageRecord.getUserIdentityArray(0).getLocalUserId()); 
			//String host = usageRecord.getHostArray(0).getStringValue();
			//String submitHost = usageRecord.getSubmitHostArray(0).getStringValue();
			//String project = usageRecord.getProjectNameArray(0).getStringValue();
			
			LicenseResourceType[] licenseResources = usageRecord.getLicenseResourceArray();
			
			for(int i = 0; i < licenseResources.length; i++) {
				LicenseResourceType licenseResource = licenseResources[i];
				String product = licenseResource.getLicense().getProduct().getName();
				String accountingGroup = StringUtil.sortString(licenseResource.getAccountingGroup());
				String start = licenseResource.getAccountingPeriod().getStartTime().toString();
				String end = licenseResource.getAccountingPeriod().getEndTime().toString();
				
				List<String> newLine = new ArrayList<String>();
				newLine.add(user); newLine.add(product); newLine.add(start); newLine.add(end); newLine.add(accountingGroup);// newLine.add(project); newLine.add(host); newLine.add(submitHost);
				if(type.equals(QueryPortlet.TYPE_BILLING)) {
					double charge = Double.parseDouble(licenseResource.getCharge().getStringValue());
					if(charge < 0.0) charge = 0.0;
					total = total + charge;
					newLine.add(twoPlaces.format(charge)+"€");
				}
				usageInformationList.add(newLine);
			}
		}
		
		return total;
	}
}