package net.sourceforge.fenixedu.domain;

import java.util.Collections;
import java.util.Set;

import net.sourceforge.fenixedu.domain.curriculum.EnrollmentCondition;
import net.sourceforge.fenixedu.domain.enrolment.ExternalDegreeEnrolmentWrapper;
import net.sourceforge.fenixedu.domain.enrolment.IDegreeModuleToEvaluate;
import net.sourceforge.fenixedu.domain.exceptions.DomainException;
import net.sourceforge.fenixedu.domain.studentCurriculum.CurriculumGroup;
import net.sourceforge.fenixedu.util.EnrolmentAction;

import org.apache.commons.lang.StringUtils;

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

public class ExternalDegreeEnrolment extends ExternalDegreeEnrolment_Base {

    public ExternalDegreeEnrolment() {
	super();
    }

    public ExternalDegreeEnrolment(final StudentCurricularPlan studentCurricularPlan, final CurriculumGroup curriculumGroup,
	    final CurricularCourse curricularCourse, final ExecutionSemester executionSemester,
	    final EnrollmentCondition enrolmentCondition, final String createdBy) {

	this();
	checkParameters(studentCurricularPlan, curriculumGroup, curricularCourse, executionSemester, enrolmentCondition,
		createdBy);
	checkInitConstraints(studentCurricularPlan, curricularCourse, executionSemester);
	initializeAsNew(studentCurricularPlan, curriculumGroup, curricularCourse, executionSemester, enrolmentCondition,
		createdBy);
	createCurriculumLineLog(EnrolmentAction.ENROL);
    }

    private void checkParameters(final StudentCurricularPlan studentCurricularPlan, final CurriculumGroup curriculumGroup,
	    final CurricularCourse curricularCourse, final ExecutionSemester executionSemester,
	    final EnrollmentCondition enrolmentCondition, final String createdBy) {

	if (studentCurricularPlan == null || curriculumGroup == null || curricularCourse == null || executionSemester == null
		|| enrolmentCondition == null || createdBy == null) {
	    throw new DomainException("error.ExternalDegreeEnrolment.invalid.parameters");
	}
    }

    @Override
    public MultiLanguageString getName() {
	final MultiLanguageString multiLanguageString = new MultiLanguageString();

	if (!StringUtils.isEmpty(this.getDegreeModule().getName())) {
	    multiLanguageString.setContent(Language.pt, getDegreeModule().getName() + " ("
		    + getDegreeCurricularPlanOfDegreeModule().getName() + ")");
	}
	if (!StringUtils.isEmpty(this.getDegreeModule().getNameEn())) {
	    multiLanguageString.setContent(Language.en, getDegreeModule().getNameEn() + " ("
		    + getDegreeCurricularPlanOfDegreeModule().getName() + ")");
	}
	return multiLanguageString;
    }

    @Override
    final public StringBuilder print(String tabs) {
	final StringBuilder builder = new StringBuilder();
	builder.append(tabs);
	builder.append("[E ").append(getDegreeModule().getName()).append(" (");
	builder.append(getDegreeCurricularPlanOfDegreeModule().getName()).append(") ]\n");
	return builder;
    }

    @Override
    public Set<IDegreeModuleToEvaluate> getDegreeModulesToEvaluate(ExecutionSemester executionSemester) {
	if (isValid(executionSemester) && isEnroled()) {
	    return Collections.<IDegreeModuleToEvaluate> singleton(new ExternalDegreeEnrolmentWrapper(this, executionSemester));
	}
	return Collections.emptySet();
    }
}