package net.sourceforge.fenixedu.domain.time.calendarStructure;

import java.util.List;

import net.sourceforge.fenixedu.domain.ExecutionSemester;
import net.sourceforge.fenixedu.domain.ExecutionYear;
import net.sourceforge.fenixedu.domain.exceptions.DomainException;
import net.sourceforge.fenixedu.domain.time.chronologies.AcademicChronology;

import org.joda.time.DateTime;

import pt.utl.ist.fenix.tools.util.i18n.MultiLanguageString;

public class AcademicSemesterCE extends AcademicSemesterCE_Base {

    public AcademicSemesterCE(AcademicCalendarEntry parentEntry, MultiLanguageString title, MultiLanguageString description,
	    DateTime begin, DateTime end, AcademicCalendarRootEntry rootEntry) {

	super();
	super.initEntry(parentEntry, title, description, begin, end, rootEntry);
	createNewExecutionPeriod();
    }

    private AcademicSemesterCE(AcademicCalendarEntry parentEntry, AcademicSemesterCE academicSemesterCE) {
	super();
	super.initVirtualEntry(parentEntry, academicSemesterCE);
    }

    @Override
    public void delete(AcademicCalendarRootEntry rootEntry) {
	if (!isVirtual()) {
	    ExecutionSemester executionSemester = ExecutionSemester.getExecutionPeriod(this);
	    executionSemester.delete();
	}
	super.delete(rootEntry);
    }

    @Override
    protected void beforeRedefineEntry() {
	throw new DomainException("error.unsupported.operation");
    }

    @Override
    protected void afterRedefineEntry() {
	throw new DomainException("error.unsupported.operation");
    }

    @Override
    public boolean isOfType(AcademicPeriod period) {
	return period.equals(AcademicPeriod.SEMESTER);
    }

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

    @Override
    protected boolean isParentEntryInvalid(AcademicCalendarEntry parentEntry) {
	return !parentEntry.isAcademicYear();
    }

    @Override
    protected boolean exceededNumberOfChildEntries(AcademicCalendarEntry childEntry) {
	if (childEntry.isAcademicTrimester()) {
	    return getChildEntriesWithTemplateEntries(childEntry.getClass()).size() >= 2;
	}
	if (childEntry.isTeacherCreditsFilling()) {
	    return getChildEntriesWithTemplateEntries(childEntry.getClass()).size() >= 1;
	}
	return false;
    }

    @Override
    protected boolean areIntersectionsPossible(AcademicCalendarEntry entryToAdd) {
	if (entryToAdd.isTeacherCreditsFilling()) {
	    return true;
	}
	return false;
    }

    @Override
    protected boolean isPossibleToChangeTimeInterval() {
	return true;
    }

    @Override
    protected AcademicCalendarEntry createVirtualEntry(AcademicCalendarEntry parentEntry) {
	return new AcademicSemesterCE(parentEntry, this);
    }

    private void createNewExecutionPeriod() {
	ExecutionYear executionYear = ExecutionYear.getExecutionYear((AcademicYearCE) getParentEntry());
	new ExecutionSemester(executionYear, new AcademicInterval(this, getRootEntry()), getTitle().getContent());
    }

    @Override
    public int getAcademicSemesterOfAcademicYear(final AcademicChronology academicChronology) {
	final AcademicYearCE academicYearCE = (AcademicYearCE) academicChronology.findSameEntry(getParentEntry());
	List<AcademicCalendarEntry> list = academicYearCE.getChildEntriesWithTemplateEntries(academicYearCE.getBegin(),
		getBegin().minusDays(1), getClass());
	return list.size() + 1;
    }

    @Override
    public TeacherCreditsFillingForTeacherCE getTeacherCreditsFillingForTeacher(AcademicChronology academicChronology) {
	final AcademicSemesterCE academicSemesterCE = (AcademicSemesterCE) academicChronology.findSameEntry(this);
	List<AcademicCalendarEntry> childEntries = academicSemesterCE
		.getChildEntriesWithTemplateEntries(TeacherCreditsFillingForTeacherCE.class);
	return (TeacherCreditsFillingForTeacherCE) (!childEntries.isEmpty() ? childEntries.iterator().next() : null);
    }

    @Override
    public TeacherCreditsFillingForDepartmentAdmOfficeCE getTeacherCreditsFillingForDepartmentAdmOffice(
	    AcademicChronology academicChronology) {
	final AcademicSemesterCE academicSemesterCE = (AcademicSemesterCE) academicChronology.findSameEntry(this);
	List<AcademicCalendarEntry> childEntries = academicSemesterCE
		.getChildEntriesWithTemplateEntries(TeacherCreditsFillingForDepartmentAdmOfficeCE.class);
	return (TeacherCreditsFillingForDepartmentAdmOfficeCE) (!childEntries.isEmpty() ? childEntries.iterator().next() : null);
    }

    @Override
    protected boolean associatedWithDomainEntities() {
	return true;
    }

    @Override
    public String getPresentationName() {
	return getParentEntry().getTitle().getContent() + " - " + getTitle().getContent() + " - [" + getType() + "]";
    }
}