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/*
 * Jooby https://jooby.io
 * Apache License Version 2.0 https://jooby.io/LICENSE.txt
 * Copyright 2014 Edgar Espina
 */
package io.jooby.internal.netty;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.DefaultByteBufHolder;
import io.netty.handler.codec.DecoderResult;
import io.netty.handler.codec.http.HttpHeaders;
import io.netty.handler.codec.http.LastHttpContent;

/**
 * Helper wrapper class which allows to assemble a ByteBuf and a HttpHeaders into one "packet" and
 * so more efficient write it through the pipeline.
 *
 * @author Norman Maurer
 */
class AssembledLastHttpContent extends DefaultByteBufHolder implements LastHttpContent {

  private final HttpHeaders trailingHeaders;
  private DecoderResult result;

  AssembledLastHttpContent(ByteBuf buf, HttpHeaders trailingHeaders) {
    this(buf, trailingHeaders, DecoderResult.SUCCESS);
  }

  AssembledLastHttpContent(ByteBuf buf, HttpHeaders trailingHeaders, DecoderResult result) {
    super(buf);
    this.trailingHeaders = trailingHeaders;
    this.result = result;
  }

  @Override
  public HttpHeaders trailingHeaders() {
    return trailingHeaders;
  }

  @Override
  public LastHttpContent copy() {
    throw new UnsupportedOperationException();
  }

  @Override
  public LastHttpContent retain(int increment) {
    super.retain(increment);
    return this;
  }

  @Override
  public LastHttpContent retain() {
    super.retain();
    return this;
  }

  @Override
  public LastHttpContent duplicate() {
    throw new UnsupportedOperationException();
  }

  @Override
  public LastHttpContent replace(ByteBuf content) {
    throw new UnsupportedOperationException();
  }

  @Override
  public LastHttpContent retainedDuplicate() {
    throw new UnsupportedOperationException();
  }

  @Override
  public DecoderResult decoderResult() {
    return result;
  }

  @Override
  public DecoderResult getDecoderResult() {
    return result;
  }

  @Override
  public void setDecoderResult(DecoderResult result) {
    this.result = result;
  }

  @Override
  public AssembledLastHttpContent touch() {
    super.touch();
    return this;
  }

  @Override
  public AssembledLastHttpContent touch(Object hint) {
    super.touch(hint);
    return this;
  }
}