/*
 * Created on 13/Jan/2005
 *
 */
package net.sourceforge.fenixedu.applicationTier.Servico.teacher;

import java.util.ArrayList;
import java.util.List;

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.domain.Grouping;
import net.sourceforge.fenixedu.domain.Shift;
import net.sourceforge.fenixedu.domain.StudentGroup;

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

    public Boolean run(Integer executionCourseCode, Integer groupPropertiesCode, Integer shiftCode) throws FenixServiceException {
	final Grouping grouping = rootDomainObject.readGroupingByOID(groupPropertiesCode);

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

	final Shift shift = rootDomainObject.readShiftByOID(shiftCode);

	if (!shift.containsType(grouping.getShiftType())) {
	    return false;
	}

	final List studentGroups = grouping.getStudentGroups();
	List studentGroupsAux = getStudentGroupsByShift(grouping, shift);

	if (studentGroups.size() == studentGroupsAux.size()) {
	    return false;
	}

	return true;
    }

    private List getStudentGroupsByShift(Grouping grouping, Shift shift) {
	List result = new ArrayList();
	List<StudentGroup> studentGroups = grouping.getStudentGroupsWithShift();
	for (final StudentGroup studentGroup : studentGroups) {
	    if (studentGroup.getShift().equals(shift)) {
		result.add(studentGroup);
	    }
	}
	return result;
    }

}