package net.sourceforge.fenixedu.applicationTier.Servico.publico;

import java.util.ArrayList;
import java.util.List;

import net.sourceforge.fenixedu.applicationTier.FenixService;
import net.sourceforge.fenixedu.applicationTier.Servico.exceptions.FenixServiceException;
import net.sourceforge.fenixedu.applicationTier.Servico.exceptions.NonExistingServiceException;
import net.sourceforge.fenixedu.dataTransferObject.InfoCurricularCourse;
import net.sourceforge.fenixedu.dataTransferObject.InfoCurricularCourseScope;
import net.sourceforge.fenixedu.dataTransferObject.InfoCurriculum;
import net.sourceforge.fenixedu.dataTransferObject.InfoExecutionCourse;
import net.sourceforge.fenixedu.domain.CurricularCourse;
import net.sourceforge.fenixedu.domain.CurricularCourseScope;
import net.sourceforge.fenixedu.domain.Curriculum;
import net.sourceforge.fenixedu.domain.ExecutionCourse;
import net.sourceforge.fenixedu.domain.ExecutionSemester;
import net.sourceforge.fenixedu.util.PeriodState;
import pt.ist.fenixWebFramework.services.Service;

public class ReadCurriculumByCurricularCourseCode extends FenixService {

    @Service
    public static InfoCurriculum run(final Integer curricularCourseCode) throws FenixServiceException {

	if (curricularCourseCode == null) {
	    throw new FenixServiceException("nullCurricularCourse");
	}

	final CurricularCourse curricularCourse = (CurricularCourse) rootDomainObject.readDegreeModuleByOID(curricularCourseCode);
	if (curricularCourse == null) {
	    throw new NonExistingServiceException();
	}

	final Curriculum curriculum = curricularCourse.findLatestCurriculum();
	final InfoCurriculum infoCurriculum = (curriculum != null) ? InfoCurriculum.newInfoFromDomain(curriculum)
		: new InfoCurriculum();
	infoCurriculum.setInfoCurricularCourse(InfoCurricularCourse.newInfoFromDomain(curricularCourse));

	List infoExecutionCourses = buildExecutionCourses(curricularCourse);
	infoCurriculum.getInfoCurricularCourse().setInfoAssociatedExecutionCourses(infoExecutionCourses);

	List activeInfoScopes = buildActiveScopes(curricularCourse);
	infoCurriculum.getInfoCurricularCourse().setInfoScopes(activeInfoScopes);

	return infoCurriculum;
    }

    private static List buildExecutionCourses(final CurricularCourse curricularCourse) {
	final List<InfoExecutionCourse> infoExecutionCourses = new ArrayList<InfoExecutionCourse>();
	for (final ExecutionCourse executionCourse : curricularCourse.getAssociatedExecutionCourses()) {
	    final ExecutionSemester executionSemester = executionCourse.getExecutionPeriod();
	    if (executionSemester.getState().equals(PeriodState.OPEN) || executionSemester.getState().equals(PeriodState.CURRENT)) {
		infoExecutionCourses.add(InfoExecutionCourse.newInfoFromDomain(executionCourse));
	    }
	}
	return infoExecutionCourses;
    }

    private static List<InfoCurricularCourseScope> buildActiveScopes(final CurricularCourse curricularCourse) {
	final List<InfoCurricularCourseScope> activeInfoCurricularCourseScopes = new ArrayList<InfoCurricularCourseScope>();
	for (final CurricularCourseScope curricularCourseScope : curricularCourse.getScopes()) {
	    if (curricularCourseScope.isActive()) {
		activeInfoCurricularCourseScopes.add(InfoCurricularCourseScope.newInfoFromDomain(curricularCourseScope));
	    }
	}
	return activeInfoCurricularCourseScopes;
    }
}