/**
    * 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.wss4j.policy.model;
  
  import org.apache.neethi.Assertion;
  import org.apache.neethi.Policy;
  import org.apache.wss4j.policy.SPConstants;
  
  import javax.xml.namespace.QName;
  import java.util.Iterator;
  import java.util.List;
  
  public class KeyValueToken extends AbstractToken {
  
      private boolean rsaKeyValue;
  
      public KeyValueToken(SPConstants.SPVersion version, SPConstants.IncludeTokenType includeTokenType,
                           Policy nestedPolicy) {
          super(version, includeTokenType, null, null, null, nestedPolicy);
          setIncludeTokenType(includeTokenType);
  
          parseNestedPolicy(nestedPolicy, this);
      }
  
      @Override
      public QName getName() {
          return getVersion().getSPConstants().getKeyValueToken();
      }
  
      @Override
      public boolean equals(Object object) {
          if (object == this) {
              return true;
          }
          if (!(object instanceof KeyValueToken)) {
              return false;
          }
  
          KeyValueToken that = (KeyValueToken)object;
          if (rsaKeyValue != that.rsaKeyValue) {
              return false;
          }
  
          return super.equals(object);
      }
  
      @Override
      public int hashCode() {
          int result = 17;
          result = 31 * result + Boolean.hashCode(rsaKeyValue);
  
          return 31 * result + super.hashCode();
      }
  
      @Override
      protected AbstractSecurityAssertion cloneAssertion(Policy nestedPolicy) {
          return new KeyValueToken(getVersion(), getIncludeTokenType(), nestedPolicy);
      }
  
      protected void parseNestedPolicy(Policy nestedPolicy, KeyValueToken keyValueToken) {
          Iterator<List<Assertion>> alternatives = nestedPolicy.getAlternatives();
          //we just process the first alternative
          //this means that if we have a compact policy only the first alternative is visible
          //in contrary to a normalized policy where just one alternative exists
          if (alternatives.hasNext()) {
              List<Assertion> assertions = alternatives.next();
              for (Assertion assertion : assertions) {
                  String assertionName = assertion.getName().getLocalPart();
                  String assertionNamespace = assertion.getName().getNamespaceURI();
  
                  QName rsaKeyValue = getVersion().getSPConstants().getRsaKeyValue();
                  if (rsaKeyValue.getLocalPart().equals(assertionName)
                      && rsaKeyValue.getNamespaceURI().equals(assertionNamespace)) {
                      if (keyValueToken.isRsaKeyValue()) {
                          throw new IllegalArgumentException(SPConstants.ERR_INVALID_POLICY);
                      }
                      keyValueToken.setRsaKeyValue(true);
                      continue;
                  }
              }
          }
      }
  
     public boolean isRsaKeyValue() {
         return rsaKeyValue;
     }
 
     protected void setRsaKeyValue(boolean rsaKeyValue) {
         this.rsaKeyValue = rsaKeyValue;
     }
 }