/*******************************************************************************
 * Copyright 2014 Federal Chancellery Austria
 * MOA-ID has been developed in a cooperation between BRZ, the Federal
 * Chancellery Austria - ICT staff unit, and Graz University of Technology.
 *
 * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by
 * the European Commission - subsequent versions of the EUPL (the "Licence");
 * You may not use this work except in compliance with the Licence.
 * You may obtain a copy of the Licence at:
 * http://www.osor.eu/eupl/
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the Licence is distributed on an "AS IS" basis,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the Licence for the specific language governing permissions and
 * limitations under the Licence.
 *
 * This product combines work with different licenses. See the "NOTICE" text
 * file for details on the various modules and licenses.
 * The "NOTICE" text file is part of the distribution. Any derivative works
 * that you distribute must include a readable copy of the "NOTICE" text file.
 *******************************************************************************/
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 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.util.MiscUtil;

public class BirthdateAttributeBuilder implements IPVPAttributeBuilder {
	
	public static final String IDENTITY_LINK_DATE_FORMAT = "yyyy-MM-dd";
	
	public String getName() {
		return BIRTHDATE_NAME;
	}
	
	public <ATT> ATT build(AuthenticationSession authSession, OAAuthParameter oaParam, AuthenticationData authData,
			IAttributeGenerator<ATT> g) throws AttributeException {
		try {
			DateFormat identityLinkFormat = new SimpleDateFormat(IDENTITY_LINK_DATE_FORMAT);
			
			if (MiscUtil.isNotEmpty(authSession.getIdentityLink().getDateOfBirth())) {			
				Date date = identityLinkFormat.parse(authSession.getIdentityLink().getDateOfBirth());
				DateFormat pvpDateFormat = new SimpleDateFormat(BIRTHDATE_FORMAT_PATTERN);
				String dateString = pvpDateFormat.format(date);
			
				return g.buildStringAttribute(BIRTHDATE_FRIENDLY_NAME, BIRTHDATE_NAME, dateString);
				
			} else {
				//build empty attribute if no Birthday date is found (STORK2)
				return g.buildEmptyAttribute(BIRTHDATE_FRIENDLY_NAME, BIRTHDATE_NAME);
				
			}
			
			//return buildStringAttribute(BIRTHDATE_FRIENDLY_NAME, BIRTHDATE_NAME, dateString);
		}
		catch (ParseException e) {
			e.printStackTrace();
			return null;
		}
	}
	
	public <ATT> ATT buildEmpty(IAttributeGenerator<ATT> g) {
		return g.buildEmptyAttribute(BIRTHDATE_FRIENDLY_NAME, BIRTHDATE_NAME);
	}
	
}