package net.sourceforge.fenixedu.domain.enrolment;

import net.sourceforge.fenixedu.domain.CurricularCourse;
import net.sourceforge.fenixedu.domain.DomainReference;
import net.sourceforge.fenixedu.domain.ExecutionSemester;
import net.sourceforge.fenixedu.domain.degreeStructure.Context;
import net.sourceforge.fenixedu.domain.degreeStructure.DegreeModule;
import net.sourceforge.fenixedu.domain.studentCurriculum.CurriculumGroup;

public class OptionalDegreeModuleToEnrol extends DegreeModuleToEnrol {

    /**
     * 
     */
    private static final long serialVersionUID = -7335154953414429996L;

    private DomainReference<CurricularCourse> curricularCourse;

    public OptionalDegreeModuleToEnrol(CurriculumGroup curriculumGroup, Context context, ExecutionSemester executionSemester,
	    CurricularCourse curricularCourse) {
	super(curriculumGroup, context, executionSemester);
	setCurricularCourse(curricularCourse);

    }

    public CurricularCourse getCurricularCourse() {
	return (this.curricularCourse != null) ? this.curricularCourse.getObject() : null;
    }

    public void setCurricularCourse(CurricularCourse curricularCourse) {
	this.curricularCourse = (curricularCourse != null) ? new DomainReference<CurricularCourse>(curricularCourse) : null;
    }

    @Override
    public boolean equals(Object obj) {
	if (obj instanceof OptionalDegreeModuleToEnrol) {
	    return super.equals(obj) && ((OptionalDegreeModuleToEnrol) obj).getCurricularCourse() == getCurricularCourse();
	}

	return false;
    }

    @Override
    public int hashCode() {
	int result = 17;
	result = 37 * result + getContext().hashCode();
	result = 37 * result + getCurriculumGroup().hashCode();
	result = 37 * result + getCurricularCourse().hashCode();
	return result;
    }

    public String getKey() {
	return super.getKey() + getCurricularCourse().getClass().getName() + ":" + getCurricularCourse().getIdInternal();
    }

    @Override
    public boolean isOptional() {
	return true;
    }

    @Override
    public Double getEctsCredits(final ExecutionSemester executionSemester) {
	return getCurricularCourse().getEctsCredits(executionSemester);
    }

    @Override
    public boolean isFor(DegreeModule degreeModule) {
	return getDegreeModule() == degreeModule || getCurricularCourse() == degreeModule;
    }

}