/**
* Copyright © 2002 Instituto Superior Técnico
*
* This file is part of FenixEdu Academic.
*
* FenixEdu Academic is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* FenixEdu Academic is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with FenixEdu Academic. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* Created on 28/Ago/2003
*
*/
package org.fenixedu.academic.domain.student;
import static org.fenixedu.academic.predicate.AccessControl.check;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import org.fenixedu.academic.domain.Attends;
import org.fenixedu.academic.domain.Grouping;
import org.fenixedu.academic.domain.Shift;
import org.fenixedu.academic.domain.StudentGroup;
import org.fenixedu.academic.predicate.RolePredicates;
import org.fenixedu.academic.service.services.exceptions.FenixServiceException;
import org.fenixedu.academic.service.services.exceptions.InvalidArgumentsServiceException;
import org.fenixedu.academic.service.services.exceptions.InvalidSituationServiceException;
import org.fenixedu.academic.service.services.exceptions.InvalidStudentNumberServiceException;
import org.fenixedu.academic.service.services.exceptions.NoChangeMadeServiceException;
import org.fenixedu.academic.service.services.exceptions.NonExistingServiceException;
import org.fenixedu.academic.service.services.exceptions.NonValidChangeServiceException;
import org.fenixedu.academic.service.services.exceptions.NotAuthorizedException;
import org.fenixedu.academic.service.strategy.groupEnrolment.strategys.GroupEnrolmentStrategyFactory;
import org.fenixedu.academic.service.strategy.groupEnrolment.strategys.IGroupEnrolmentStrategy;
import org.fenixedu.academic.service.strategy.groupEnrolment.strategys.IGroupEnrolmentStrategyFactory;
import org.fenixedu.bennu.core.domain.Bennu;
import pt.ist.fenixframework.Atomic;
import pt.ist.fenixframework.FenixFramework;
/**
* @author asnr and scpo
*
*/
public class GroupEnrolment {
@Atomic
public static Boolean run(String groupingID, String shiftID, Integer groupNumber, List<String> studentUsernames,
String studentUsername) throws FenixServiceException {
check(RolePredicates.STUDENT_AND_TEACHER_PREDICATE);
return enrole(groupingID, shiftID, groupNumber, studentUsernames, studentUsername);
}
public static Boolean enrole(String groupingID, String shiftID, Integer groupNumber, List<String> studentUsernames,
String studentUsername) throws FenixServiceException {
final Bennu rootDomainObject = Bennu.getInstance();
final Grouping grouping = FenixFramework.getDomainObject(groupingID);
if (grouping == null) {
throw new NonExistingServiceException();
}
final Registration userStudent = Registration.readByUsername(studentUsername);
final IGroupEnrolmentStrategyFactory enrolmentGroupPolicyStrategyFactory = GroupEnrolmentStrategyFactory.getInstance();
final IGroupEnrolmentStrategy strategy = enrolmentGroupPolicyStrategyFactory.getGroupEnrolmentStrategyInstance(grouping);
if (grouping.getStudentAttend(studentUsername) == null) {
throw new NoChangeMadeServiceException();
}
Shift shift = null;
if (shiftID != null) {
shift = FenixFramework.getDomainObject(shiftID);
}
Set<String> allStudentsUsernames = new HashSet<String>(studentUsernames);
allStudentsUsernames.add(studentUsername);
Integer result = strategy.enrolmentPolicyNewGroup(grouping, allStudentsUsernames.size(), shift);
if (result.equals(Integer.valueOf(-1))) {
throw new InvalidArgumentsServiceException();
}
if (result.equals(Integer.valueOf(-2))) {
throw new NonValidChangeServiceException();
}
if (result.equals(Integer.valueOf(-3))) {
throw new NotAuthorizedException();
}
final Attends userAttend = grouping.getStudentAttend(userStudent);
if (userAttend == null) {
throw new InvalidStudentNumberServiceException();
}
if (strategy.checkAlreadyEnroled(grouping, studentUsername)) {
throw new InvalidSituationServiceException();
}
StudentGroup newStudentGroup = grouping.readStudentGroupBy(groupNumber);
if (newStudentGroup != null) {
throw new FenixServiceException();
}
if (!strategy.checkStudentsUserNamesInGrouping(studentUsernames, grouping)) {
throw new InvalidStudentNumberServiceException();
}
checkStudentUsernamesAlreadyEnroledInStudentGroup(strategy, studentUsernames, grouping);
newStudentGroup = new StudentGroup(groupNumber, grouping, shift);
for (final String studentUsernameIter : studentUsernames) {
Attends attend = grouping.getStudentAttend(studentUsernameIter);
attend.addStudentGroups(newStudentGroup);
}
userAttend.addStudentGroups(newStudentGroup);
grouping.addStudentGroups(newStudentGroup);
return true;
}
private static void checkStudentUsernamesAlreadyEnroledInStudentGroup(final IGroupEnrolmentStrategy strategy,
final List<String> studentUsernames, final Grouping grouping) throws FenixServiceException {
for (final String studentUsername : studentUsernames) {
if (strategy.checkAlreadyEnroled(grouping, studentUsername)) {
throw new InvalidSituationServiceException();
}
}
}
}