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/*
 * Copyright 2016 Objectos, Fábrica de Software LTDA.
 *
 * Licensed 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 br.com.objectos.http;

import java.io.IOException;

import br.com.objectos.io.ByteSource;

/**
 * @author [email protected] (Marcio Endo)
 */
class MessageBody implements SocketWritable {

  private static final MessageBody EMPTY = new MessageBody();

  private MessageBody() {
  }

  public static MessageBody empty() {
    return EMPTY;
  }

  public static MessageBody ofByteSource(ByteSource source) {
    return new ByteSourceMessageBody(source);
  }

  public static MessageBody ofString(String value) {
    return new StringMessageBody(value);
  }

  @Override
  public void writeTo(SocketWriter writer) throws IOException {
  }

  private static class ByteSourceMessageBody extends MessageBody {

    private final ByteSource source;

    public ByteSourceMessageBody(ByteSource source) {
      this.source = source;
    }

    @Override
    public void writeTo(SocketWriter writer) throws IOException {
      writer.newLine();
      writer.newLine();
      writer.write(source);
    }

  }

  private static class StringMessageBody extends MessageBody {

    private final String value;

    public StringMessageBody(String value) {
      this.value = value;
    }

    @Override
    public void writeTo(SocketWriter writer) throws IOException {
      writer.newLine();
      writer.newLine();
      writer.writeString(value);
    }

  }

}