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

import java.io.File;
import java.io.IOException;
import java.util.HashSet;
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 org.jfree.chart.JFreeChart;

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

import eu.smartlm.abs.portal.data.query.QueryConstructor;
import eu.smartlm.abs.portal.data.query.QueryConstructorDummy;
import eu.smartlm.abs.portal.data.query.ws.EBSServiceClient;
import eu.smartlm.abs.portal.graph.GraphConstructor;
import eu.smartlm.abs.portal.security.login.controller.LoginController;
import eu.smartlm.abs.portal.security.login.model.User;
import eu.smartlm.abs.portal.util.StringUtil;
import eu.smartlm.abs.portal.view.data.ABSQuery;
import eu.smartlm.abs.portal.view.event.EventData;
import eu.smartlm.abs.portal.view.event.LoginEventData;
import eu.smartlm.schemas.x2009.x06.urec.SmartLMUsageRecordType;

/**
 * Query constructor for the Accounting and Billing Portal
 * 
 * @author David García Pérez-CESGA
 * 
 */
public class QueryPortlet extends GenericPortlet {
	public static String TYPE_ACCOUNTING = "100";
	public static String TYPE_BILLING = "200";
	private String type;
	public static String QUERY = "query";
	private ABSQuery aBSquery = new ABSQuery();
	private boolean creation;
	private String ebsInterfaceURL;
	public static String EBS_INTERFACE_URL = "ebs_interface_url"; 
	private Set<String> securityUserFilter = new HashSet<String>();
	private Set<String> securityAccountingGroupFilter = new HashSet<String>();

	protected Set<String> getSecurityUserFilter() {
		return securityUserFilter;
	}

	protected Set<String> getSecurityAccountingGroupFilter() {
		return securityAccountingGroupFilter;
	}

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

		creation = true;
		aBSquery.setLoginStatus(LoginController.LOGGED_OUT);
	}

	@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(true);

		aBSquery.setSecurityUserFilter(securityUserFilter);
		aBSquery.setSecurityAccountingGroupFilter(securityAccountingGroupFilter);
		
		if (creation) { 
			aBSquery.reset();
			creation = false;
		} 
		
		Integer status = (Integer) session.getAttribute(LoginController.LOGIN_EVENT, PortletSession.APPLICATION_SCOPE);
		
		if(status != null) {
			System.out.println("CREATING VIEW ################################");
			setLoginStatus(status.intValue(), (User) session.getAttribute(LoginController.LOGIN_EVENT_USER, PortletSession.APPLICATION_SCOPE));
		}

		session.setAttribute(QUERY, aBSquery);
		session.setAttribute(EBS_INTERFACE_URL, ebsInterfaceURL);

		include(viewJSP, renderRequest, renderResponse);
	}

	@Override
	public void processAction(ActionRequest actionRequest, ActionResponse actionResponse) throws IOException, PortletException {

		String selection = actionRequest.getParameter("selection");
		String[] selectedOptions = actionRequest.getParameterValues("optionsFromSelection");

		String startDate = actionRequest.getParameter("startDate");
		String endDate = actionRequest.getParameter("endDate");

		if (startDate != null && startDate != "") {
			aBSquery.setStartDate(startDate);
		}
		if (endDate != null & endDate != "") {
			aBSquery.setEndDate(endDate);
		}

		if (actionRequest.getParameter("moreOptions") != null) {

			//We take different actions depending on the status
			if (selection != null && selectedOptions != null) {
				addToQuery(selection, selectedOptions);
				actAsStatus(selection);
			}
		} else if (actionRequest.getParameter("Submit") != null) {
			if (selection != null && selectedOptions != null) {
				addToQuery(selection, selectedOptions);
				actAsStatus(selection);
			}

			// We get the Usage Records
			QueryConstructor queryConstructor;
			if (ebsInterfaceURL.equalsIgnoreCase("DEMO")) {
				queryConstructor = new QueryConstructorDummy();
			} else {
				queryConstructor = new EBSServiceClient(); 

				   try {
					   File rampartDirectory = new File("rampart");
					   File clientPropertiesFile = new File("client.properties");
					   queryConstructor.setUpConnection(ebsInterfaceURL, rampartDirectory.getCanonicalPath(), clientPropertiesFile.getCanonicalPath());
				   } catch (Exception e) {
					   throw new PortletException("Unable to initialize ConfigurationContext.", e);
				   }      
			}

			// We establish the security restrinctions inside the query
			Set<String> users = new HashSet<String>();
			for(String user : aBSquery.getQueryUsers()) users.add(user);
			for(String filterUser : securityUserFilter) users.add(filterUser);
			Set<String> accountingGroups = new HashSet<String>();
			for(String accountingGroup :  aBSquery.getQueryAccountingGroups()) accountingGroups.add(accountingGroup);
			for(String filterAccountingGroup : securityAccountingGroupFilter) accountingGroups.add(filterAccountingGroup);

			Set<SmartLMUsageRecordType> usageRecords = queryConstructor.getListOfSmartLMUsageRecords(
					StringUtil.getDate(aBSquery.getStartDate(), false),
					StringUtil.getDate(aBSquery.getEndDate(), true),
					users,
					aBSquery.getQueryProducts(),
					aBSquery.getQueryProjects(),
					aBSquery.getQueryHosts(),
					aBSquery.getQuerySubmitHosts(),
					new HashSet<String>(),
					accountingGroups);

			// We construct the graph
			JFreeChart graph = null;
			if (type.equals(TYPE_ACCOUNTING)) {
				graph = GraphConstructor.constructHourGraph(aBSquery, GraphConstructor.GRAPH_TYPE_BARCHAR3D, usageRecords);
			} else if (type.equals(TYPE_BILLING)) {
				graph = GraphConstructor.constructBillingGraph(aBSquery, GraphConstructor.GRAPH_TYPE_BARCHAR3D, usageRecords);
			}

			EventData eventData = new EventData(true, graph, usageRecords, type, aBSquery.getStartDate(), aBSquery.getEndDate());
			eventData.setQueryUsers(StringUtil.copyStringList(aBSquery.getQueryUsers()));
			eventData.setQueryProducts(StringUtil.copyStringList(aBSquery.getQueryProducts()));
			eventData.setQueryProjects(StringUtil.copyStringList(aBSquery.getQueryProjects()));
			eventData.setQueryHosts(StringUtil.copyStringList(aBSquery.getQueryHosts()));
			eventData.setQuerySubmitHosts(StringUtil.copyStringList(aBSquery.getQuerySubmitHosts()));
			eventData.setQueryAccountingGroups(StringUtil.copyStringList(aBSquery.getQueryAccountingGroups()));

			// We reset the query at the end.
			aBSquery.reset();

			// We send an event that a Graph needs to be represented.
			if (type.equals(TYPE_ACCOUNTING)) {
				actionResponse.setEvent(ResultPortlet.GRAPH_DONE, eventData);
			} else if (type.equals(TYPE_BILLING)) {
				actionResponse.setEvent(ResultPortlet.GRAPH_DONE_BILLING, eventData);
			}
		} else if (actionRequest.getParameter("Reset") != null) {
			aBSquery.reset();
			EventData eventData = new EventData(false, null, new HashSet<SmartLMUsageRecordType>(), type, "", "");
			//actionResponse.setEvent(ResultPortlet.GRAPH_DONE, eventData);

			// We send an event that a Graph needs to be represented.
			if (type.equals(TYPE_ACCOUNTING)) {
				actionResponse.setEvent(ResultPortlet.GRAPH_DONE, eventData);
			} else if (type.equals(TYPE_BILLING)) {
				actionResponse.setEvent(ResultPortlet.GRAPH_DONE_BILLING, eventData);
			}
		}
	}

	@Override
	public void processEvent(EventRequest eventRequest, EventResponse eventResponse) {
		System.out.println("GETS EVENT - " + type);
		System.out.println("PROCESS EVENT #####################");
		Event event = eventRequest.getEvent();

		if(event.getName().equals(LoginController.LOGIN_EVENT)) {
			LoginEventData loginEventData = (LoginEventData) event.getValue();
			setLoginStatus(loginEventData.getStatus(), loginEventData.getUser());
		}
	}
	
	private void printStatus(int status) {
		if(type.equals(TYPE_ACCOUNTING)) {
			if(status == LoginController.LOGGED_IN) System.out.println("ACCOUNTING PORTLET - USER LOGGED IN");
			else System.out.println("ACCOUNTING PORTLET - USER LOGGED OUT");
		} else {
			if(status == LoginController.LOGGED_IN) System.out.println("BILLING PORTLET - USER LOGGED IN");
			else System.out.println("BILLING PORTLET - USER LOGGED OUT");
		}
	}
	
	private void setLoginStatus(int status, User user) {
		
		printStatus(status);
		
		aBSquery.setLoginStatus(status);

		if(aBSquery.getLoginStatus() == LoginController.LOGGED_OUT) {
			aBSquery.reset();
			securityAccountingGroupFilter = new HashSet<String>();
			securityUserFilter = new HashSet<String>();
			aBSquery.setSecurityAccountingGroupFilter(securityAccountingGroupFilter);
			aBSquery.setSecurityUserFilter(securityUserFilter);			
		} else if (aBSquery.getLoginStatus() == LoginController.LOGGED_IN) {
			setFilters(user);
			aBSquery.setSecurityAccountingGroupFilter(securityAccountingGroupFilter);
			aBSquery.setSecurityUserFilter(securityUserFilter);
		}
	}

	private void addToQuery(String selection, String[] selectedOptions) {

		Set<String> selectedOptionsList = new HashSet<String>();
		//We convert the String[] to a List
		for (int i = 0; i < selectedOptions.length; i++) {
			selectedOptionsList.add(selectedOptions[i]);
		}

		if (selection.equals(ABSQuery.PRODUCT)) {
			aBSquery.setQueryProducts(selectedOptionsList);
		} else if (selection.equals(ABSQuery.USER)) {
			aBSquery.setQueryUsers(selectedOptionsList);
		} else if (selection.equals(ABSQuery.ACCOUNTINGGROUP)) {
			aBSquery.setQueryAccountingGroups(selectedOptionsList);
		} else if (selection.equals(ABSQuery.PROJECT)) {
			aBSquery.setQueryProjects(selectedOptionsList);
		} else if (selection.equals(ABSQuery.HOST)) {
			aBSquery.setQueryHosts(selectedOptionsList);
		} else if (selection.equals(ABSQuery.SUBMITHOST)) {
			aBSquery.setQuerySubmitHosts(selectedOptionsList);
		}
	}

	private void actAsStatus(String parameterSelection) {

		int numberOfOptions = aBSquery.getNumberOptions();

		// We decrease the number of options.
		if (!parameterSelection.equals("Select Option")) {
			aBSquery.setNumberOptions(numberOfOptions - 1);
		}

		if (parameterSelection.equals(ABSQuery.PRODUCT)) {
			aBSquery.setProducts(false);

			if (numberOfOptions == ABSQuery.NUMBER_OF_OPTIONS) {
				aBSquery.setFirstOption(ABSQuery.PRODUCT);
			} else if (numberOfOptions == (ABSQuery.NUMBER_OF_OPTIONS - 1)) {
				aBSquery.setSecondOption(ABSQuery.PRODUCT);
			}
		} else if (parameterSelection.equals(ABSQuery.USER)) {
			aBSquery.setUsers(false);

			if (numberOfOptions == ABSQuery.NUMBER_OF_OPTIONS) {
				aBSquery.setFirstOption(ABSQuery.USER);
			} else if (numberOfOptions == (ABSQuery.NUMBER_OF_OPTIONS - 1)) {
				aBSquery.setSecondOption(ABSQuery.USER);
			}
		} else if (parameterSelection.equals(ABSQuery.ACCOUNTINGGROUP)) {
			aBSquery.setAccountingGroups(false);

			if (numberOfOptions == ABSQuery.NUMBER_OF_OPTIONS) {
				aBSquery.setFirstOption(ABSQuery.ACCOUNTINGGROUP);
			} else if (numberOfOptions == (ABSQuery.NUMBER_OF_OPTIONS - 1)) {
				aBSquery.setSecondOption(ABSQuery.ACCOUNTINGGROUP);
			}
		} else if (parameterSelection.equals(ABSQuery.PROJECT)) {
			aBSquery.setProjects(false);

			if (numberOfOptions == ABSQuery.NUMBER_OF_OPTIONS) {
				aBSquery.setFirstOption(ABSQuery.PROJECT);
			} else if (numberOfOptions == (ABSQuery.NUMBER_OF_OPTIONS - 1)) {
				aBSquery.setSecondOption(ABSQuery.PROJECT);
			}
		} else if (parameterSelection.equals(ABSQuery.HOST)) {
			aBSquery.setHosts(false);

			if (numberOfOptions == ABSQuery.NUMBER_OF_OPTIONS) {
				aBSquery.setFirstOption(ABSQuery.HOST);
			} else if (numberOfOptions == (ABSQuery.NUMBER_OF_OPTIONS - 1)) {
				aBSquery.setSecondOption(ABSQuery.HOST);
			}
		} else if (parameterSelection.equals(ABSQuery.SUBMITHOST)) {
			aBSquery.setSubmithosts(false);

			if (numberOfOptions == ABSQuery.NUMBER_OF_OPTIONS) {
				aBSquery.setFirstOption(ABSQuery.SUBMITHOST);
			} else if (numberOfOptions == (ABSQuery.NUMBER_OF_OPTIONS - 1)) {
				aBSquery.setSecondOption(ABSQuery.SUBMITHOST);
			}
		}
	}

	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);
		}
	}
	protected String editJSP;
	protected String helpJSP;
	protected String viewJSP;
	private static Log _log = LogFactoryUtil.getLog(QueryPortlet.class);

	/**
	 * Sets the filter that are going to be added to all queries... 
	 * @param user
	 */
	public void setFilters(User user) {
		// We empty first the previous filters
		securityUserFilter = new HashSet<String>();
		securityAccountingGroupFilter = new HashSet<String>();

		if(user.isSeeAccountingGroupData() && !user.isSeeAll()) {
			securityAccountingGroupFilter.add(user.getAccountingGroup());
		} else if(!user.isSeeAll()){
			securityUserFilter.add(user.getAccountingUsername());
		}
	}
}