/*
    * Copyright 2013 The Netty Project
    *
    * The Netty Project 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:
    *
    *   https://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 io.netty.handler.codec.memcache.binary;
  
  import io.netty.buffer.ByteBuf;
  import io.netty.buffer.Unpooled;
  import io.netty.util.internal.ObjectUtil;
  import io.netty.util.internal.UnstableApi;
  
  /**
   * The default implementation of a {@link FullBinaryMemcacheResponse}.
   */
  @UnstableApi
  public class DefaultFullBinaryMemcacheResponse extends DefaultBinaryMemcacheResponse
      implements FullBinaryMemcacheResponse {
  
      private final ByteBuf content;
  
      /**
       * Create a new {@link DefaultFullBinaryMemcacheResponse} with the header, key and extras.
       *
       * @param key    the key to use.
       * @param extras the extras to use.
       */
      public DefaultFullBinaryMemcacheResponse(ByteBuf key, ByteBuf extras) {
          this(key, extras, Unpooled.buffer(0));
      }
  
      /**
       * Create a new {@link DefaultFullBinaryMemcacheResponse} with the header, key, extras and content.
       *
       * @param key     the key to use.
       * @param extras  the extras to use.
       * @param content the content of the full request.
       */
      public DefaultFullBinaryMemcacheResponse(ByteBuf key, ByteBuf extras,
          ByteBuf content) {
          super(key, extras);
          this.content = ObjectUtil.checkNotNull(content, "content");
          setTotalBodyLength(keyLength() + extrasLength() + content.readableBytes());
      }
  
      @Override
      public ByteBuf content() {
          return content;
      }
  
      @Override
      public FullBinaryMemcacheResponse retain() {
          super.retain();
          return this;
      }
  
      @Override
      public FullBinaryMemcacheResponse retain(int increment) {
          super.retain(increment);
          return this;
      }
  
      @Override
      public FullBinaryMemcacheResponse touch() {
          super.touch();
          return this;
      }
  
      @Override
      public FullBinaryMemcacheResponse touch(Object hint) {
          super.touch(hint);
          content.touch(hint);
          return this;
      }
  
      @Override
      protected void deallocate() {
          super.deallocate();
          content.release();
      }
  
      @Override
      public FullBinaryMemcacheResponse copy() {
          ByteBuf key = key();
          if (key != null) {
              key = key.copy();
          }
          ByteBuf extras = extras();
          if (extras != null) {
             extras = extras.copy();
         }
         return newInstance(key, extras, content().copy());
     }
 
     @Override
     public FullBinaryMemcacheResponse duplicate() {
         ByteBuf key = key();
         if (key != null) {
             key = key.duplicate();
         }
         ByteBuf extras = extras();
         if (extras != null) {
             extras = extras.duplicate();
         }
         return newInstance(key, extras, content().duplicate());
     }
 
     @Override
     public FullBinaryMemcacheResponse retainedDuplicate() {
         return replace(content().retainedDuplicate());
     }
 
     @Override
     public FullBinaryMemcacheResponse replace(ByteBuf content) {
         ByteBuf key = key();
         if (key != null) {
             key = key.retainedDuplicate();
         }
         ByteBuf extras = extras();
         if (extras != null) {
             extras = extras.retainedDuplicate();
         }
         return newInstance(key, extras, content);
     }
 
     private FullBinaryMemcacheResponse newInstance(ByteBuf key, ByteBuf extras, ByteBuf content) {
         DefaultFullBinaryMemcacheResponse newInstance = new DefaultFullBinaryMemcacheResponse(key, extras, content);
         copyMeta(newInstance);
         return newInstance;
     }
 }