package net.sourceforge.fenixedu.domain.teacher;

import net.sourceforge.fenixedu.domain.Teacher;
import net.sourceforge.fenixedu.domain.exceptions.DomainException;

public class TeacherPastService extends TeacherPastService_Base {

    public TeacherPastService(TeacherService teacherService, Double credits) {
	super();
	if (teacherService == null || credits == null) {
	    throw new DomainException("arguments can't be null");
	}
	if (countPastServices(teacherService.getTeacher()) >= 1) {
	    throw new DomainException("There is already one Past Service, there can't be more");
	}
	setTeacherService(teacherService);
	setCredits(credits);
    }

    @Override
    public void setCredits(Double credits) {
	if (credits == null) {
	    throw new DomainException("arguments can't be null");
	}
	super.setCredits(credits);
    }

    private int countPastServices(Teacher teacher) {
	int count = 0;
	for (TeacherService teacherService : teacher.getTeacherServices()) {
	    if (teacherService.getPastService() != null) {
		count++;
	    }
	}
	return count;
    }
}