package converter;

import java.util.Map;
import org.apache.struts2.util.StrutsTypeConverter;
import org.joda.time.DateTime;
import org.joda.time.DateTimeZone;
import org.joda.time.format.DateTimeFormat;

public final class JodaTimeConverter extends StrutsTypeConverter
{
    @Override
    public String convertToString(Map map, Object dateTime)
    {
        if (dateTime instanceof DateTime)
        {
            DateTime time = (DateTime) dateTime;
            if (time.getHourOfDay() + time.getMinuteOfHour() + time.getSecondOfMinute() == 0)
            {
                return time.toString("dd-MMM-yyyy");
            }
            else
            {
                return time.toString("dd-MMM-yyyy HH:mm:ss");
            }
        }
        return null;
    }

    @Override
    public Object convertFromString(Map map, String[] values, Class clazz)
    {
        if (values != null && values.length > 0)
        {
            return parseValue(values[0]);
        }
        return null;
    }

    private DateTime parseValue(String value)
    {
        value = value.trim();
        try
        {
            if (!value.contains(" ")) //date contained
            {
                return DateTimeFormat.forPattern("MM/dd/yyyy").parseDateTime(value).withZone(DateTimeZone.UTC);
            }
            else //time only
            {
                return DateTimeFormat.forPattern("MM/dd/yyyy HH:mm:ss").parseDateTime(value).withZone(DateTimeZone.UTC);
            }
        } catch (Exception e) {
            return null;
        }
    }
}