package at.gv.egovernment.moa.id.protocols.pvp2x.builder.attributes;

import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

import org.w3c.dom.Element;

import at.gv.e_government.reference.namespace.mandates._20040701_.Mandate;
import at.gv.e_government.reference.namespace.persondata._20020228_.PhysicalPersonType;
import at.gv.egovernment.moa.id.auth.data.AuthenticationSession;
import at.gv.egovernment.moa.id.config.auth.OAAuthParameter;
import at.gv.egovernment.moa.id.data.AuthenticationData;
import at.gv.egovernment.moa.id.protocols.pvp2x.builder.attributes.exceptions.AttributeException;
import at.gv.egovernment.moa.id.protocols.pvp2x.builder.attributes.exceptions.InvalidDateFormatAttributeException;
import at.gv.egovernment.moa.id.protocols.pvp2x.builder.attributes.exceptions.NoMandateDataAttributeException;
import at.gv.egovernment.moa.id.util.MandateBuilder;
import at.gv.egovernment.moa.logging.Logger;

public class MandateNaturalPersonBirthDateAttributeBuilder implements IPVPAttributeBuilder {
	
	public String getName() {
		return MANDATE_NAT_PER_BIRTHDATE_NAME;
	}
	
	public <ATT> ATT build(AuthenticationSession authSession, OAAuthParameter oaParam, AuthenticationData authData,
			IAttributeGenerator<ATT> g) throws AttributeException {
		if (authSession.getUseMandate()) {
			Element mandate = authSession.getMandate();
			if (mandate == null) {
				throw new NoMandateDataAttributeException();
			}
			Mandate mandateObject = MandateBuilder.buildMandate(mandate);
			if (mandateObject == null) {
				throw new NoMandateDataAttributeException();
			}
			PhysicalPersonType physicalPerson = mandateObject.getMandator().getPhysicalPerson();
			if (physicalPerson == null) {
				Logger.error("No physicalPerson mandate");
				throw new NoMandateDataAttributeException();
			}
			
			String dateOfBirth = physicalPerson.getDateOfBirth();
			try {
				DateFormat mandateFormat = new SimpleDateFormat(MandateBuilder.MANDATE_DATE_OF_BIRTH_FORMAT);
				Date date = mandateFormat.parse(dateOfBirth);
				DateFormat pvpDateFormat = new SimpleDateFormat(MANDATE_NAT_PER_BIRTHDATE_FORMAT_PATTERN);
				String dateString = pvpDateFormat.format(date);
				
				return g.buildStringAttribute(MANDATE_NAT_PER_BIRTHDATE_FRIENDLY_NAME, MANDATE_NAT_PER_BIRTHDATE_NAME, dateString);
			}
			catch (ParseException e) {
				e.printStackTrace();
				throw new InvalidDateFormatAttributeException();
			}
		}
		return null;
		
	}
	
	public <ATT> ATT buildEmpty(IAttributeGenerator<ATT> g) {
		return g.buildEmptyAttribute(MANDATE_NAT_PER_BIRTHDATE_FRIENDLY_NAME, MANDATE_NAT_PER_BIRTHDATE_NAME);
	}
	
}