/*******************************************************************************
 * 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.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.egiz.eaaf.core.api.idp.IAttributeGenerator;
import at.gv.egiz.eaaf.core.api.idp.IAuthData;
import at.gv.egiz.eaaf.core.api.idp.IPVPAttributeBuilder;
import at.gv.egiz.eaaf.core.api.idp.ISPConfiguration;
import at.gv.egiz.eaaf.core.exceptions.AttributeBuilderException;
import at.gv.egiz.eaaf.core.exceptions.InvalidDateFormatAttributeException;
import at.gv.egiz.eaaf.core.impl.idp.builder.attributes.PVPMETADATA;
import at.gv.egovernment.moa.id.data.IMOAAuthData;
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;
import at.gv.egovernment.moa.util.MiscUtil;

@PVPMETADATA
public class MandateNaturalPersonBirthDateAttributeBuilder implements IPVPAttributeBuilder {
	
	public String getName() {
		return MANDATE_NAT_PER_BIRTHDATE_NAME;
	}
	
	public <ATT> ATT build(ISPConfiguration oaParam, IAuthData authData,
			IAttributeGenerator<ATT> g) throws AttributeBuilderException {
		
		String attrValue = internalAttributGeneration(oaParam, authData);
		if (attrValue != null)
			return g.buildStringAttribute(MANDATE_NAT_PER_BIRTHDATE_FRIENDLY_NAME, MANDATE_NAT_PER_BIRTHDATE_NAME, attrValue);		
		else 
			return null;
				
	}
	
	public <ATT> ATT buildEmpty(IAttributeGenerator<ATT> g) {
		return g.buildEmptyAttribute(MANDATE_NAT_PER_BIRTHDATE_FRIENDLY_NAME, MANDATE_NAT_PER_BIRTHDATE_NAME);
	}
	
	
	protected String internalAttributGeneration(ISPConfiguration oaParam, IAuthData authData) throws InvalidDateFormatAttributeException, NoMandateDataAttributeException {		
		if (((IMOAAuthData)authData).isUseMandate()) {
			
			//get PVP attribute directly, if exists 
			String birthDayString = authData.getGenericData(MANDATE_NAT_PER_BIRTHDATE_NAME, String.class);
			
			if (MiscUtil.isEmpty(birthDayString)) {
				if (authData instanceof IMOAAuthData) {
					//read bPK from mandate if it is not directly included
					Element mandate = ((IMOAAuthData)authData).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.info("No physicalPerson mandate");
						throw new NoMandateDataAttributeException();
					}
				
					String dateOfBirth = physicalPerson.getDateOfBirth();
					try {
						DateFormat mandateFormat = new SimpleDateFormat(MandateBuilder.MANDATE_DATE_OF_BIRTH_FORMAT);
						mandateFormat.setLenient(false);
						Date date = mandateFormat.parse(dateOfBirth);
						DateFormat pvpDateFormat = new SimpleDateFormat(MANDATE_NAT_PER_BIRTHDATE_FORMAT_PATTERN);
						birthDayString = pvpDateFormat.format(date);
							
					}
					catch (ParseException e) {
						Logger.warn("MIS mandate birthday has an incorrect formt. (Value:" + dateOfBirth, e);
						throw new InvalidDateFormatAttributeException();
					
					}					
				} else
					Logger.info(MANDATE_NAT_PER_BIRTHDATE_FRIENDLY_NAME + " is only available in MOA-ID context");
				
			} else {
				try {
					DateFormat pvpDateFormat = new SimpleDateFormat(MANDATE_NAT_PER_BIRTHDATE_FORMAT_PATTERN);
					pvpDateFormat.setLenient(false);
					pvpDateFormat.parse(birthDayString);
					
				} catch (ParseException e) {
					Logger.warn("Format of direct included PVP Attribute " + MANDATE_NAT_PER_BIRTHDATE_FRIENDLY_NAME 
							+ " has an incorrect formt. (Value:" + birthDayString, e);
					throw new InvalidDateFormatAttributeException();
				}
				
			}
			
			return birthDayString;			
			
		}
		
		return null;
	}
	
	
}