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.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 net.sourceforge.fenixedu.presentationTier.Action.sop.utils.ServiceUtils;

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().getRegistrations();
        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) ServiceUtils.executeService(getUserView(request),
                                               "ReadStudentTimeTable", 
                                               new Object[] { registration });
	
	request.setAttribute("infoLessons", infoLessons);
	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);
    }
}