/**
    * 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.neethi.PolicyComponent;
  import org.apache.neethi.PolicyContainingAssertion;
  import org.apache.wss4j.policy.SPConstants;
  
  import javax.xml.namespace.QName;
  import javax.xml.stream.XMLStreamException;
  import javax.xml.stream.XMLStreamWriter;
  import java.util.Iterator;
  import java.util.List;
  
  public class Trust10 extends AbstractSecurityAssertion implements PolicyContainingAssertion {
  
      private Policy nestedPolicy;
      private boolean mustSupportClientChallenge;
      private boolean mustSupportServerChallenge;
      private boolean requireClientEntropy;
      private boolean requireServerEntropy;
      private boolean mustSupportIssuedTokens;
  
      public Trust10(SPConstants.SPVersion version, Policy nestedPolicy) {
          super(version);
          this.nestedPolicy = nestedPolicy;
  
          parseNestedTrust10Policy(nestedPolicy, this);
      }
  
      @Override
      public Policy getPolicy() {
          return nestedPolicy;
      }
  
      @Override
      public QName getName() {
          return getVersion().getSPConstants().getTrust10();
      }
  
      @Override
      public boolean equals(Object object) {
          if (object == this) {
              return true;
          }
          if (!(object instanceof Trust10)) {
              return false;
          }
  
          Trust10 that = (Trust10)object;
          if (mustSupportClientChallenge != that.mustSupportClientChallenge
              || mustSupportServerChallenge != that.mustSupportServerChallenge
              || requireClientEntropy != that.requireClientEntropy
              || requireServerEntropy != that.requireServerEntropy
              || mustSupportIssuedTokens != that.mustSupportIssuedTokens) {
              return false;
          }
  
          return super.equals(object);
      }
  
      @Override
      public int hashCode() {
          int result = 17;
          result = 31 * result + Boolean.hashCode(mustSupportClientChallenge);
          result = 31 * result + Boolean.hashCode(mustSupportServerChallenge);
          result = 31 * result + Boolean.hashCode(requireClientEntropy);
          result = 31 * result + Boolean.hashCode(requireServerEntropy);
          result = 31 * result + Boolean.hashCode(mustSupportIssuedTokens);
  
          return 31 * result + super.hashCode();
      }
  
      @Override
      public PolicyComponent normalize() {
          return super.normalize(getPolicy());
      }
  
      @Override
      public void serialize(XMLStreamWriter writer) throws XMLStreamException {
          super.serialize(writer, getPolicy());
     }
 
     @Override
     protected AbstractSecurityAssertion cloneAssertion(Policy nestedPolicy) {
         return new Trust10(getVersion(), nestedPolicy);
     }
 
     protected void parseNestedTrust10Policy(Policy nestedPolicy, Trust10 trust10) {
         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 mustSupportClientChallenge = getVersion().getSPConstants().getMustSupportClientChallenge();
                 if (mustSupportClientChallenge.getLocalPart().equals(assertionName)
                     && mustSupportClientChallenge.getNamespaceURI().equals(assertionNamespace)) {
                     if (trust10.isMustSupportClientChallenge()) {
                         throw new IllegalArgumentException(SPConstants.ERR_INVALID_POLICY);
                     }
                     trust10.setMustSupportClientChallenge(true);
                     continue;
                 }
 
                 QName mustSupportServerChallenge = getVersion().getSPConstants().getMustSupportServerChallenge();
                 if (mustSupportServerChallenge.getLocalPart().equals(assertionName)
                     && mustSupportServerChallenge.getNamespaceURI().equals(assertionNamespace)) {
                     if (trust10.isMustSupportServerChallenge()) {
                         throw new IllegalArgumentException(SPConstants.ERR_INVALID_POLICY);
                     }
                     trust10.setMustSupportServerChallenge(true);
                     continue;
                 }
 
                 QName requireClientEntropy = getVersion().getSPConstants().getRequireClientEntropy();
                 if (requireClientEntropy.getLocalPart().equals(assertionName)
                     && requireClientEntropy.getNamespaceURI().equals(assertionNamespace)) {
                     if (trust10.isRequireClientEntropy()) {
                         throw new IllegalArgumentException(SPConstants.ERR_INVALID_POLICY);
                     }
                     trust10.setRequireClientEntropy(true);
                     continue;
                 }
 
                 QName requireServerEntropy = getVersion().getSPConstants().getRequireServerEntropy();
                 if (requireServerEntropy.getLocalPart().equals(assertionName)
                     && requireServerEntropy.getNamespaceURI().equals(assertionNamespace)) {
                     if (trust10.isRequireServerEntropy()) {
                         throw new IllegalArgumentException(SPConstants.ERR_INVALID_POLICY);
                     }
                     trust10.setRequireServerEntropy(true);
                     continue;
                 }
 
                 QName mustSupportIssuedTokens = getVersion().getSPConstants().getMustSupportIssuedTokens();
                 if (mustSupportIssuedTokens.getLocalPart().equals(assertionName)
                     && mustSupportIssuedTokens.getNamespaceURI().equals(assertionNamespace)) {
                     if (trust10.isMustSupportIssuedTokens()) {
                         throw new IllegalArgumentException(SPConstants.ERR_INVALID_POLICY);
                     }
                     trust10.setMustSupportIssuedTokens(true);
                     continue;
                 }
             }
         }
     }
 
     public boolean isMustSupportClientChallenge() {
         return mustSupportClientChallenge;
     }
 
     protected void setMustSupportClientChallenge(boolean mustSupportClientChallenge) {
         this.mustSupportClientChallenge = mustSupportClientChallenge;
     }
 
     public boolean isMustSupportServerChallenge() {
         return mustSupportServerChallenge;
     }
 
     protected void setMustSupportServerChallenge(boolean mustSupportServerChallenge) {
         this.mustSupportServerChallenge = mustSupportServerChallenge;
     }
 
     public boolean isRequireClientEntropy() {
         return requireClientEntropy;
     }
 
     protected void setRequireClientEntropy(boolean requireClientEntropy) {
         this.requireClientEntropy = requireClientEntropy;
     }
 
     public boolean isRequireServerEntropy() {
         return requireServerEntropy;
     }
 
     protected void setRequireServerEntropy(boolean requireServerEntropy) {
         this.requireServerEntropy = requireServerEntropy;
     }
 
     public boolean isMustSupportIssuedTokens() {
         return mustSupportIssuedTokens;
     }
 
     protected void setMustSupportIssuedTokens(boolean mustSupportIssuedTokens) {
         this.mustSupportIssuedTokens = mustSupportIssuedTokens;
     }
 }