/*
 * Created on 20/Out/2004
 *
 */
package net.sourceforge.fenixedu.applicationTier.Servico.student;

import pt.ist.fenixWebFramework.services.Service;

import pt.ist.fenixWebFramework.security.accessControl.Checked;

import net.sourceforge.fenixedu.applicationTier.FenixService;
import net.sourceforge.fenixedu.applicationTier.Servico.exceptions.ExistingServiceException;
import net.sourceforge.fenixedu.applicationTier.Servico.exceptions.FenixServiceException;
import net.sourceforge.fenixedu.applicationTier.Servico.exceptions.InvalidArgumentsServiceException;
import net.sourceforge.fenixedu.applicationTier.Servico.exceptions.InvalidSituationServiceException;
import net.sourceforge.fenixedu.domain.Grouping;
import net.sourceforge.fenixedu.domain.StudentGroup;

/**
 * @author joaosa & rmalo
 * 
 */
public class VerifyGroupingAndStudentGroupWithoutShift extends FenixService {

    @Checked("RolePredicates.STUDENT_PREDICATE")
    @Service
    public static Integer run(Integer studentGroupCode, Integer groupPropertiesCode, String shiftCodeString, String username)
	    throws FenixServiceException {
	Grouping groupProperties = rootDomainObject.readGroupingByOID(groupPropertiesCode);

	if (groupProperties == null) {
	    throw new ExistingServiceException();
	}

	StudentGroup studentGroup = rootDomainObject.readStudentGroupByOID(studentGroupCode);

	if (studentGroup == null) {
	    throw new InvalidSituationServiceException();
	}

	Integer shiftCode = null;
	if (shiftCodeString != null) {
	    shiftCode = Integer.valueOf(shiftCodeString);
	}

	if (studentGroup.getShift() != null && shiftCode == null) {
	    throw new InvalidArgumentsServiceException();
	}

	if (studentGroup.getShift() == null) {
	    if (shiftCode != null)
		throw new InvalidArgumentsServiceException();
	} else {
	    if (studentGroup.getShift().getIdInternal().intValue() != shiftCode.intValue()) {
		throw new InvalidArgumentsServiceException();
	    }
	}

	if (studentGroup.getShift() != null && groupProperties.getShiftType() != null) {
	    return Integer.valueOf(1);
	}

	if (studentGroup.getShift() != null && groupProperties.getShiftType() == null) {
	    return Integer.valueOf(2);
	}

	if (studentGroup.getShift() == null && groupProperties.getShiftType() != null) {
	    return Integer.valueOf(3);
	}

	if (studentGroup.getShift() == null && groupProperties.getShiftType() == null) {
	    return Integer.valueOf(4);
	}

	return Integer.valueOf(5);

    }
}