package net.sourceforge.fenixedu.domain.student.curriculum;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;

import net.sourceforge.fenixedu.domain.Enrolment;
import net.sourceforge.fenixedu.domain.ExecutionYear;
import net.sourceforge.fenixedu.domain.StudentCurricularPlan;
import net.sourceforge.fenixedu.domain.student.Registration;

public class SimpleStudentCurriculum extends StudentCurriculumBase {

    public SimpleStudentCurriculum(final Registration registration, ExecutionYear executionYear) {
	super(registration, executionYear);
    }

    @Override
    final public Collection<ICurriculumEntry> getCurriculumEntries() {
	final StudentCurricularPlan studentCurricularPlan = getStudentCurricularPlan();
	if (studentCurricularPlan == null) {
	    return null;
	}

	final List<ICurriculumEntry> result = new ArrayList<ICurriculumEntry>();
	Collections.sort(result, ICurriculumEntry.COMPARATOR_BY_EXECUTION_PERIOD_AND_NAME_AND_ID);

	addCurricularEnrolments(result, studentCurricularPlan, getApprovedEnrolments());
	addCredits(result, studentCurricularPlan);

	return result;
    }

    @Override
    final protected EnrolmentSet getApprovedEnrolments() {
	final EnrolmentSet result = new EnrolmentSet(getExecutionYear());
	getRegistration().addApprovedEnrolments(result);
	return result;
    }

    final private void addCurricularEnrolments(final Collection<ICurriculumEntry> curriculumEntries,
	    final StudentCurricularPlan studentCurricularPlan, final EnrolmentSet approvedEnrolments) {
	for (final Enrolment enrolment : approvedEnrolments) {
	    curriculumEntries.add(new NotInDegreeCurriculumCurriculumEntry(enrolment));
	}
    }

    final private void addCredits(Collection<ICurriculumEntry> curriculumEntries, StudentCurricularPlan studentCurricularPlan) {
	if (studentCurricularPlan.hasGivenCredits()) {
	    curriculumEntries.add(new GivenCreditsEntry(studentCurricularPlan.getGivenCredits()));
	}
    }

}