/**
 * Project Sop 
 * 
 * Package presentationTier.Action.sop
 * 
 * Created on 2003/03/21
 *
 */
package net.sourceforge.fenixedu.presentationTier.Action.resourceAllocationManager;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import net.sourceforge.fenixedu.applicationTier.IUserView;
import net.sourceforge.fenixedu.applicationTier.Filtro.exception.FenixFilterException;
import net.sourceforge.fenixedu.applicationTier.Servico.exceptions.FenixServiceException;
import net.sourceforge.fenixedu.applicationTier.Servico.exceptions.NonExistingServiceException;
import net.sourceforge.fenixedu.applicationTier.Servico.resourceAllocationManager.EditExamRooms;
import net.sourceforge.fenixedu.applicationTier.Servico.resourceAllocationManager.ReadEmptyRoomsForExam;
import net.sourceforge.fenixedu.applicationTier.Servico.resourceAllocationManager.ReadExamsByExecutionCourseInitialsAndSeasonAndExecutionPeriod;
import net.sourceforge.fenixedu.dataTransferObject.InfoExam;
import net.sourceforge.fenixedu.dataTransferObject.InfoExecutionCourse;
import net.sourceforge.fenixedu.dataTransferObject.InfoRoom;
import net.sourceforge.fenixedu.dataTransferObject.InfoViewExamByDayAndShift;
import net.sourceforge.fenixedu.presentationTier.Action.exceptions.FenixActionException;
import net.sourceforge.fenixedu.presentationTier.Action.exceptions.NonExistingActionException;
import net.sourceforge.fenixedu.presentationTier.Action.resourceAllocationManager.base.FenixDateAndTimeAndCurricularYearsAndExecutionCourseAndExecutionDegreeAndCurricularYearContextDispatchAction;
import net.sourceforge.fenixedu.presentationTier.Action.resourceAllocationManager.utils.PresentationConstants;
import net.sourceforge.fenixedu.presentationTier.Action.resourceAllocationManager.utils.Util;
import net.sourceforge.fenixedu.presentationTier.Action.utils.ContextUtils;
import net.sourceforge.fenixedu.util.Season;

import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.DynaActionForm;

import pt.ist.fenixWebFramework.security.UserView;

/**
 * @author Luis Cruz & Sara Ribeiro
 */
public class EditExamRoomsDA extends
	FenixDateAndTimeAndCurricularYearsAndExecutionCourseAndExecutionDegreeAndCurricularYearContextDispatchAction {

    public ActionForward prepare(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response)
	    throws FenixActionException, FenixFilterException {
	IUserView userView = UserView.getUser();
	DynaActionForm editExamRoomsForm = (DynaActionForm) form;

	ContextUtils.setExecutionCourseContext(request);
	InfoExecutionCourse infoExecutionCourse = (InfoExecutionCourse) request
		.getAttribute(PresentationConstants.EXECUTION_COURSE);

	Season oldExamsSeason = new Season(Integer.valueOf(request.getParameter("oldExamSeason")));

	InfoExam infoExam = null;
	InfoViewExamByDayAndShift infoViewExamByDayAndShift = null;
	infoViewExamByDayAndShift = (ReadExamsByExecutionCourseInitialsAndSeasonAndExecutionPeriod.run(infoExecutionCourse
		.getSigla(), oldExamsSeason, infoExecutionCourse.getInfoExecutionPeriod()));
	infoExam = infoViewExamByDayAndShift.getInfoExam();

	List examRooms = infoExam.getAssociatedRooms();

	if (examRooms != null) {
	    String[] rooms = new String[examRooms.size()];
	    for (int i = 0; i < examRooms.size(); i++) {
		rooms[i] = ((InfoRoom) examRooms.get(i)).getIdInternal().toString();
	    }
	    editExamRoomsForm.set("selectedRooms", rooms);
	} else {
	    editExamRoomsForm.set("selectedRooms", null);
	}

	List availableRooms;
	try {
	    availableRooms = ReadEmptyRoomsForExam.run(infoExam);
	} catch (FenixServiceException e) {
	    throw new FenixActionException(e);
	}

	Map roomsHashTable = new HashMap();
	for (int i = 0; i < availableRooms.size(); i++) {
	    InfoRoom infoRoom = (InfoRoom) availableRooms.get(i);
	    List roomsOfBuilding = (List) roomsHashTable.get(infoRoom.getEdificio());
	    if (roomsOfBuilding == null) {
		roomsOfBuilding = new ArrayList();
		roomsHashTable.put(infoRoom.getEdificio(), roomsOfBuilding);
	    }
	    roomsOfBuilding.add(infoRoom);
	}

	List sortedRooms = new ArrayList();
	sortedRooms.addAll(roomsHashTable.values());

	request.setAttribute(PresentationConstants.AVAILABLE_ROOMS, sortedRooms);

	request.setAttribute(PresentationConstants.INFO_EXAMS_KEY, infoViewExamByDayAndShift);

	String input = request.getParameter("input");
	request.setAttribute(PresentationConstants.NEXT_PAGE, input);

	return mapping.findForward("ViewSelectRoomsForm");
    }

    public ActionForward select(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response)
	    throws FenixActionException, FenixFilterException {

	IUserView userView = UserView.getUser();
	DynaActionForm editExamRoomsForm = (DynaActionForm) form;

	ContextUtils.setExecutionCourseContext(request);
	InfoExecutionCourse infoExecutionCourse = (InfoExecutionCourse) request
		.getAttribute(PresentationConstants.EXECUTION_COURSE);

	Season oldExamsSeason = new Season(Integer.valueOf(request.getParameter("oldExamSeason")));

	InfoExam infoExam = null;
	InfoViewExamByDayAndShift infoViewExamByDayAndShift = null;
	infoViewExamByDayAndShift = (ReadExamsByExecutionCourseInitialsAndSeasonAndExecutionPeriod.run(infoExecutionCourse
		.getSigla(), oldExamsSeason, infoExecutionCourse.getInfoExecutionPeriod()));
	infoExam = infoViewExamByDayAndShift.getInfoExam();

	String[] rooms = (String[]) editExamRoomsForm.get("selectedRooms");
	List roomsToSet = new ArrayList();
	for (int i = 0; i < rooms.length; i++) {
	    roomsToSet.add(Integer.valueOf(rooms[i]));
	}

	try {
	    infoExam = EditExamRooms.run(infoExam, roomsToSet);
	} catch (NonExistingServiceException e) {
	    throw new NonExistingActionException(e);
	} catch (FenixServiceException e) {
	    throw new FenixActionException(e);
	}

	infoViewExamByDayAndShift.setInfoExam(infoExam);
	request.setAttribute(PresentationConstants.INFO_EXAMS_KEY, infoViewExamByDayAndShift);

	List horas = Util.getExamShifts();
	request.setAttribute(PresentationConstants.LABLELIST_HOURS, horas);

	List daysOfMonth = Util.getDaysOfMonth();
	request.setAttribute(PresentationConstants.LABLELIST_DAYSOFMONTH, daysOfMonth);

	List monthsOfYear = Util.getMonthsOfYear();
	request.setAttribute(PresentationConstants.LABLELIST_MONTHSOFYEAR, monthsOfYear);

	List examSeasons = Util.getExamSeasons();
	request.setAttribute(PresentationConstants.LABLELIST_SEASONS, examSeasons);

	String input = request.getParameter("input");
	request.setAttribute(PresentationConstants.NEXT_PAGE, input);

	return mapping.findForward("ViewEditExamForm");
    }

}