package net.sourceforge.fenixedu.presentationTier.Action.student;

import java.util.List;

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

import net.sourceforge.fenixedu.applicationTier.Filtro.exception.FenixFilterException;
import net.sourceforge.fenixedu.applicationTier.Servico.exceptions.FenixServiceException;
import net.sourceforge.fenixedu.applicationTier.Servico.student.ReadStudentTimeTable;
import net.sourceforge.fenixedu.dataTransferObject.InfoLesson;
import net.sourceforge.fenixedu.domain.student.Registration;
import net.sourceforge.fenixedu.presentationTier.Action.base.FenixDispatchAction;
import net.sourceforge.fenixedu.presentationTier.Action.exceptions.FenixActionException;

import org.apache.commons.lang.StringUtils;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.DynaActionForm;

/**
 * 
 * @author naat
 * @author zenida
 * 
 */
public class ViewStudentTimeTable extends FenixDispatchAction {

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

	List<Registration> registrations = getUserView(request).getPerson().getStudent().getActiveRegistrations();
	if (registrations.size() == 1) {
	    return forwardToShowTimeTable(registrations.get(0), mapping, request);
	} else {
	    request.setAttribute("registrations", registrations);
	    return mapping.findForward("chooseRegistration");
	}
    }

    public ActionForward showTimeTable(ActionMapping mapping, ActionForm actionForm, HttpServletRequest request,
	    HttpServletResponse response) throws FenixActionException, FenixFilterException, FenixServiceException {

	return forwardToShowTimeTable(getRegistration(actionForm, request), mapping, request);
    }

    private ActionForward forwardToShowTimeTable(Registration registration, ActionMapping mapping, HttpServletRequest request)
	    throws FenixActionException, FenixFilterException, FenixServiceException {

	List<InfoLesson> infoLessons = (List) ReadStudentTimeTable.run(registration);

	request.setAttribute("infoLessons", infoLessons);
	request.setAttribute("registrationId", registration.getIdInternal());
	return mapping.findForward("showTimeTable");
    }

    private Registration getRegistration(final ActionForm form, final HttpServletRequest request) {
	Integer registrationId = (Integer) ((DynaActionForm) form).get("registrationId");
	if (registrationId == null && !StringUtils.isEmpty(request.getParameter("registrationId"))) {
	    registrationId = Integer.valueOf(request.getParameter("registrationId"));
	}
	return rootDomainObject.readRegistrationByOID(registrationId);
    }
}