/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/**
 * Copyright (c) 2014-2016,  Regents of the University of California,
 *                           Arizona Board of Regents,
 *                           Colorado State University,
 *                           University Pierre & Marie Curie, Sorbonne University,
 *                           Washington University in St. Louis,
 *                           Beijing Institute of Technology,
 *                           The University of Memphis.
 *
 * This file is part of NFD (Named Data Networking Forwarding Daemon).
 * See AUTHORS.md for complete list of NFD authors and contributors.
 *
 * NFD is free software: you can redistribute it and/or modify it under the terms
 * of the GNU General Public License as published by the Free Software Foundation,
 * either version 3 of the License, or (at your option) any later version.
 *
 * NFD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 * PURPOSE.  See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * NFD, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef NFD_DAEMON_FACE_PROTOCOL_FACTORY_HPP
#define NFD_DAEMON_FACE_PROTOCOL_FACTORY_HPP

#include "channel.hpp"
#include <ndn-cxx/encoding/nfd-constants.hpp>

namespace nfd {

/**
 * \brief Abstract base class for all protocol factories
 */
class ProtocolFactory
{
public:
  /**
   * \brief Base class for all exceptions thrown by protocol factories
   */
  class Error : public std::runtime_error
  {
  public:
    explicit
    Error(const std::string& what)
      : std::runtime_error(what)
    {
    }
  };

  /** \brief Try to create Face using the supplied FaceUri
   *
   * This method should automatically choose channel, based on supplied FaceUri
   * and create face.
   *
   * \param uri remote URI of the new face
   * \param persistency persistency of the new face
   * \param wantLocalFieldsEnabled whether local fields should be enabled on the face
   * \param onCreated callback if face creation succeeds
   *                  If a face with the same remote URI already exists, its persistency and
   *                  LocalFieldsEnabled setting will not be modified.
   * \param onFailure callback if face creation fails
   */
  virtual void
  createFace(const FaceUri& uri,
             ndn::nfd::FacePersistency persistency,
             bool wantLocalFieldsEnabled,
             const FaceCreatedCallback& onCreated,
             const FaceCreationFailedCallback& onFailure) = 0;

  virtual std::vector<shared_ptr<const Channel>>
  getChannels() const = 0;
};

} // namespace nfd

#endif // NFD_DAEMON_FACE_PROTOCOL_FACTORY_HPP