/*
    * 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.maven.shared.release.transform.jdom2;
  
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.OutputStream;
  import java.io.PrintStream;
  import java.io.PrintWriter;
  import java.io.Reader;
  import java.io.Writer;
  import java.util.Enumeration;
  import java.util.InvalidPropertiesFormatException;
  import java.util.Properties;
  import java.util.Set;
  
  import org.jdom2.Element;
  
  /**
   * JDOM2 implementation of poms PROPERTIES element
   * Only few methods are properly implemented as the underlying data structure of {@link java.util.Hashtable} is never populated.
   *
   * @author Robert Scholte
   * @since 3.0
   */
  public class JDomProperties extends Properties {
      private final Element properties;
  
      /**
       * <p>Constructor for JDomProperties.</p>
       *
       * @param properties a {@link org.jdom2.Element} object
       */
      public JDomProperties(Element properties) {
          this.properties = properties;
      }
  
      @Override
      public synchronized Object put(Object key, Object value) {
          Element property = properties.getChild((String) key, properties.getNamespace());
  
          if (property == null) {
              property = new Element((String) key, properties.getNamespace());
          }
          JDomUtils.rewriteValue(property, (String) value);
  
          // todo follow specs of Hashtable.put
          return null;
      }
  
      @Override
      public synchronized void load(Reader reader) throws IOException {
          throw new UnsupportedOperationException();
      }
  
      @Override
      public synchronized void load(InputStream inStream) throws IOException {
          throw new UnsupportedOperationException();
      }
  
      @SuppressWarnings("deprecation")
      @Override
      public void save(OutputStream out, String comments) {
          throw new UnsupportedOperationException();
      }
  
      @Override
      public void store(Writer writer, String comments) throws IOException {
          throw new UnsupportedOperationException();
      }
  
      @Override
      public void store(OutputStream out, String comments) throws IOException {
          throw new UnsupportedOperationException();
      }
  
      @Override
      public synchronized void loadFromXML(InputStream in) throws IOException, InvalidPropertiesFormatException {
          throw new UnsupportedOperationException();
      }
  
      @Override
      public void storeToXML(OutputStream os, String comment) throws IOException {
         throw new UnsupportedOperationException();
     }
 
     @Override
     public void storeToXML(OutputStream os, String comment, String encoding) throws IOException {
         throw new UnsupportedOperationException();
     }
 
     @Override
     public String getProperty(String key) {
         Element property = properties.getChild(key, properties.getNamespace());
 
         if (property == null) {
             return null;
         } else {
             return property.getTextTrim();
         }
     }
 
     @Override
     public boolean containsKey(Object key) {
         if (key instanceof String) {
             Element property = properties.getChild((String) key, properties.getNamespace());
             return property != null;
         }
         return false;
     }
 
     @Override
     public String getProperty(String key, String defaultValue) {
         String property = getProperty(key);
 
         return property == null ? defaultValue : property;
     }
 
     @Override
     public Enumeration<?> propertyNames() {
         throw new UnsupportedOperationException();
     }
 
     @Override
     public Set<String> stringPropertyNames() {
         throw new UnsupportedOperationException();
     }
 
     @Override
     public void list(PrintStream out) {
         throw new UnsupportedOperationException();
     }
 
     @Override
     public void list(PrintWriter out) {
         throw new UnsupportedOperationException();
     }
 }