package net.sourceforge.fenixedu.presentationTier.renderers.converters;

import java.text.ParseException;
import java.util.ArrayList;
import java.util.List;

import net.sourceforge.fenixedu.domain.ExecutionPeriod;
import net.sourceforge.fenixedu.domain.enrolment.EnroledCurriculumModuleForImprovementWrapper;
import net.sourceforge.fenixedu.domain.enrolment.EnroledCurriculumModuleForSpecialSeasonWrapper;
import net.sourceforge.fenixedu.domain.studentCurriculum.CurriculumModule;
import net.sourceforge.fenixedu.util.DateFormatUtil;

import org.joda.time.YearMonthDay;

import pt.iscte.ci.metadata.ISCTE;
import pt.ist.fenixWebFramework.renderers.components.converters.ConversionException;
import pt.ist.fenixWebFramework.renderers.components.converters.Converter;
import pt.ist.utl.fenix.utils.Pair;

@ISCTE(author = "ajsco")
public class SpecialSeasonCurriculumModuleEnroledWrapperConverter extends Converter {

    @Override
    public Object convert(Class type, Object value) {
	if (value == null) {
	    return null;
	}

	final DomainObjectKeyConverter converter = new DomainObjectKeyConverter();
	final List<EnroledCurriculumModuleForSpecialSeasonWrapper> result = new ArrayList<EnroledCurriculumModuleForSpecialSeasonWrapper>();
	final String[] values = (String[]) value;
	List<Pair<String, String>> errors = new ArrayList<Pair<String, String>>();
	for (int i = 0; i < values.length; i++) {
	    String key = values[i];

	    String[] parts = key.split(",");
	    if (parts.length < 3) {
		throw new ConversionException("invalid key format: " + key);
	    }

	    final CurriculumModule curriculumModule = (CurriculumModule) converter.convert(type, parts[0]);
	    final ExecutionPeriod executionPeriod = (ExecutionPeriod) converter.convert(type, parts[1]);

	    YearMonthDay enrollmentDate = null;
	    String strDate = parts[2];
	    try {
		enrollmentDate = YearMonthDay.fromDateFields(DateFormatUtil.parse(DateFormatUtil.DEFAULT_DATE_FORMAT, strDate));
	    } catch (ParseException e) {
		errors.add(new Pair<String, String>(EnroledCurriculumModuleForImprovementWrapper.ERROR_INVALID_DATE, strDate));
	    }

	    EnroledCurriculumModuleForSpecialSeasonWrapper wrapper = new EnroledCurriculumModuleForSpecialSeasonWrapper(
		    curriculumModule, executionPeriod, enrollmentDate, errors);
	    result.add(wrapper);
	}

	return result;
    }
}