package at.gv.egovernment.moa.id.protocols.eidas.attributes.builder.eid4u;

import java.io.IOException;

import org.apache.commons.lang3.StringUtils;

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.ISPConfiguration;
import at.gv.egiz.eaaf.core.exceptions.AttributeBuilderException;
import at.gv.egiz.eid4u.api.attributes.Definitions;
import at.gv.egovernment.moa.id.protocols.eidas.attributes.builder.IeIDASAttribute;
import at.gv.egovernment.moa.id.protocols.eidas.attributes.builder.eIDASMetadata;
import at.gv.egovernment.moa.logging.Logger;
import at.gv.egovernment.moa.util.Base64Utils;
import eu.eidas.auth.commons.attribute.AttributeValueMarshallingException;
import eu.eidas.auth.commons.protocol.eidas.impl.CurrentAddressAttributeValueMarshaller;
import eu.eidas.auth.commons.protocol.eidas.impl.PostalAddress;
import eu.eidas.auth.commons.protocol.eidas.impl.PostalAddressAttributeValue;

@eIDASMetadata
public class TemporaryAddressAttrBuilder implements IeIDASAttribute {

	@Override
	public <ATT> ATT build(ISPConfiguration oaParam, IAuthData authData, IAttributeGenerator<ATT> g)
			throws AttributeBuilderException {
		
		Object obj= authData.getGenericData(getName(), Object.class);
		
		if (obj instanceof PostalAddress) {			
			try {
				return g.buildStringAttribute(Definitions.TEMPORARYADDRESS_FRIENDLYNAME, getName(), 
						new CurrentAddressAttributeValueMarshaller().marshal(
								new PostalAddressAttributeValue((PostalAddress) obj)));
								
			} catch (AttributeValueMarshallingException e) {
				Logger.warn("Can NOT build attribute: " + getName(), e);
				
			}

		} else if (obj instanceof String) {		
			if (StringUtils.isNotEmpty((String)obj))
				try {
					return g.buildStringAttribute(Definitions.TEMPORARYADDRESS_FRIENDLYNAME, getName(), 
							Base64Utils.encode(((String) obj).getBytes()));
					
				} catch (IOException e) {
					Logger.warn("Can NOT build attribute: " + getName(), e);
					
				}
		
		}
		
		throw new AttributeBuilderException("Attribute '" + getName() + "' is not available");
		
	}

	@Override
	public <ATT> ATT buildEmpty(IAttributeGenerator<ATT> g) {
		return g.buildEmptyAttribute(Definitions.TEMPORARYADDRESS_FRIENDLYNAME, getName());
	}

	@Override
	public String getName() {
		return Definitions.TEMPORARYADDRESS_NAME;
		
	}

}