/*******************************************************************************
 * 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.verification;

import java.util.ArrayList;
import java.util.List;

import org.opensaml.saml2.metadata.provider.MetadataProvider;
import org.opensaml.security.MetadataCredentialResolver;
import org.opensaml.xml.security.keyinfo.BasicProviderKeyInfoCredentialResolver;
import org.opensaml.xml.security.keyinfo.KeyInfoCredentialResolver;
import org.opensaml.xml.security.keyinfo.KeyInfoProvider;
import org.opensaml.xml.security.keyinfo.provider.DSAKeyValueProvider;
import org.opensaml.xml.security.keyinfo.provider.InlineX509DataProvider;
import org.opensaml.xml.security.keyinfo.provider.RSAKeyValueProvider;
import org.opensaml.xml.signature.SignatureTrustEngine;
import org.opensaml.xml.signature.impl.ExplicitKeySignatureTrustEngine;
//import org.opensaml.xml.signature.impl.PKIXSignatureTrustEngine;
//import edu.internet2.middleware.shibboleth.common.security.MetadataPKIXValidationInformationResolver;

public class TrustEngineFactory {

//	public static SignatureTrustEngine getSignatureTrustEngine() {
//		try {
//			MetadataPKIXValidationInformationResolver mdResolver = new MetadataPKIXValidationInformationResolver(
//					MOAMetadataProvider.getInstance());
//
//			List<KeyInfoProvider> keyInfoProvider = new ArrayList<KeyInfoProvider>();
//			keyInfoProvider.add(new DSAKeyValueProvider());
//			keyInfoProvider.add(new RSAKeyValueProvider());
//			keyInfoProvider.add(new InlineX509DataProvider());
//
//			KeyInfoCredentialResolver keyInfoResolver = new BasicProviderKeyInfoCredentialResolver(
//					keyInfoProvider);
//
//			PKIXSignatureTrustEngine engine = new PKIXSignatureTrustEngine(
//					mdResolver, keyInfoResolver);
//
//			return engine;
//
//		} catch (Exception e) {
//			e.printStackTrace();
//			return null;
//		}
//	}

	public static SignatureTrustEngine getSignatureKnownKeysTrustEngine(MetadataProvider provider) {
		MetadataCredentialResolver resolver;

		resolver = new MetadataCredentialResolver(provider);

		List<KeyInfoProvider> keyInfoProvider = new ArrayList<KeyInfoProvider>();
		keyInfoProvider.add(new DSAKeyValueProvider());
		keyInfoProvider.add(new RSAKeyValueProvider());
		keyInfoProvider.add(new InlineX509DataProvider());

		KeyInfoCredentialResolver keyInfoResolver = new BasicProviderKeyInfoCredentialResolver(
				keyInfoProvider);

		ExplicitKeySignatureTrustEngine engine = new ExplicitKeySignatureTrustEngine(
				resolver, keyInfoResolver);

		return engine;

	}

}