/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.cxf.systest.sts.deployment;

import java.net.URI;
import java.util.ArrayList;
import java.util.List;

import org.apache.cxf.rt.security.claims.Claim;
import org.apache.cxf.rt.security.claims.ClaimCollection;
import org.apache.cxf.sts.claims.ClaimsHandler;
import org.apache.cxf.sts.claims.ClaimsParameters;
import org.apache.cxf.sts.claims.ProcessedClaim;
import org.apache.cxf.sts.claims.ProcessedClaimCollection;
import org.apache.wss4j.common.saml.OpenSAMLUtil;
import org.opensaml.core.xml.XMLObjectBuilder;
import org.opensaml.core.xml.XMLObjectBuilderFactory;
import org.opensaml.core.xml.config.XMLObjectProviderRegistrySupport;
import org.opensaml.core.xml.schema.XSInteger;
import org.opensaml.saml.saml2.core.AttributeValue;

/**
 * A custom ClaimsHandler implementation for use in the tests.
 */
public class CustomClaimsHandler implements ClaimsHandler {

    public static final URI ROLE =
            URI.create("http://schemas.xmlsoap.org/ws/2005/05/identity/claims/role");
    public static final URI GIVEN_NAME =
        URI.create("http://schemas.xmlsoap.org/ws/2005/05/identity/claims/givenname");
    public static final URI LANGUAGE =
        URI.create("http://schemas.mycompany.com/claims/language");
    public static final URI NUMBER =
        URI.create("http://schemas.mycompany.com/claims/number");

    public ProcessedClaimCollection retrieveClaimValues(
            ClaimCollection claims, ClaimsParameters parameters) {

        if (claims != null && !claims.isEmpty()) {
            ProcessedClaimCollection claimCollection = new ProcessedClaimCollection();
            for (Claim requestClaim : claims) {
                ProcessedClaim claim = new ProcessedClaim();
                claim.setClaimType(requestClaim.getClaimType());
                claim.setIssuer("Test Issuer");
                claim.setOriginalIssuer("Original Issuer");
                if (ROLE.equals(requestClaim.getClaimType())) {
                    claim.addValue("admin-user");
                } else if (GIVEN_NAME.equals(requestClaim.getClaimType())) {
                    claim.addValue(parameters.getPrincipal().getName());
                } else if (NUMBER.equals(requestClaim.getClaimType())) {
                    // Create and add a custom Attribute (Integer)
                    OpenSAMLUtil.initSamlEngine();
                    XMLObjectBuilderFactory builderFactory = XMLObjectProviderRegistrySupport.getBuilderFactory();

                    @SuppressWarnings("unchecked")
                    XMLObjectBuilder<XSInteger> xsIntegerBuilder =
                        (XMLObjectBuilder<XSInteger>)builderFactory.getBuilder(XSInteger.TYPE_NAME);
                    XSInteger attributeValue =
                        xsIntegerBuilder.buildObject(AttributeValue.DEFAULT_ELEMENT_NAME, XSInteger.TYPE_NAME);
                    attributeValue.setValue(5);

                    claim.addValue(attributeValue);
                }
                claimCollection.add(claim);
            }
            return claimCollection;
        }
        return null;
    }

    public List<URI> getSupportedClaimTypes() {
        List<URI> list = new ArrayList<>();
        list.add(ROLE);
        list.add(GIVEN_NAME);
        list.add(LANGUAGE);
        list.add(NUMBER);
        return list;
    }

}
