/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/**
 * Copyright (c) 2013-2014 Regents of the University of California.
 *
 * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
 *
 * ndn-cxx library is free software: you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option) any later version.
 *
 * ndn-cxx library 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 Lesser General Public License for more details.
 *
 * You should have received copies of the GNU General Public License and GNU Lesser
 * General Public License along with ndn-cxx, e.g., in COPYING.md file.  If not, see
 * <http://www.gnu.org/licenses/>.
 *
 * See AUTHORS.md for complete list of ndn-cxx authors and contributors.
 */

#include "nfd-constants.hpp"
#include <iostream>
#include <map>

namespace ndn {
namespace nfd {

std::ostream&
operator<<(std::ostream& os, FaceScope faceScope)
{
  switch (faceScope) {
    case FACE_SCOPE_NONE:
      return os << "none";
    case FACE_SCOPE_NON_LOCAL:
      return os << "non-local";
    case FACE_SCOPE_LOCAL:
      return os << "local";
    default:
      return os << static_cast<unsigned>(faceScope);
  }
}

std::ostream&
operator<<(std::ostream& os, FacePersistency facePersistency)
{
  switch (facePersistency) {
    case FACE_PERSISTENCY_NONE:
      return os << "none";
    case FACE_PERSISTENCY_PERSISTENT:
      return os << "persistent";
    case FACE_PERSISTENCY_ON_DEMAND:
      return os << "on-demand";
    case FACE_PERSISTENCY_PERMANENT:
      return os << "permanent";
    default:
      return os << static_cast<unsigned>(facePersistency);
  }
}

std::ostream&
operator<<(std::ostream& os, LinkType linkType)
{
  switch (linkType) {
    case LINK_TYPE_NONE:
      return os << "none";
    case LINK_TYPE_POINT_TO_POINT:
      return os << "point-to-point";
    case LINK_TYPE_MULTI_ACCESS:
      return os << "multi-access";
    default:
      return os << static_cast<unsigned>(linkType);
  }
}

std::ostream&
operator<<(std::ostream& os, RouteOrigin routeOrigin)
{
  switch (routeOrigin) {
    case ROUTE_ORIGIN_NONE:
      return os << "none";
    case ROUTE_ORIGIN_APP:
      return os << "app";
    case ROUTE_ORIGIN_AUTOREG:
      return os << "autoreg";
    case ROUTE_ORIGIN_CLIENT:
      return os << "client";
    case ROUTE_ORIGIN_AUTOCONF:
      return os << "autoconf";
    case ROUTE_ORIGIN_NLSR:
      return os << "nlsr";
    case ROUTE_ORIGIN_STATIC:
      return os << "static";
    default:
      return os << static_cast<unsigned>(routeOrigin);
  }
}

std::ostream&
operator<<(std::ostream& os, RouteFlags routeFlags)
{
  if (routeFlags == ROUTE_FLAGS_NONE) {
    return os << "none";
  }

  bool isFirst = true;
  auto printToken = [&os, &isFirst] (const std::string& token) {
    if (isFirst) {
      isFirst = false;
    }
    else {
      os << '|';
    }
    os << token;
  };

  static const std::map<RouteFlags, std::string> knownBits = {
    {ROUTE_FLAG_CHILD_INHERIT, "child-inherit"},
    {ROUTE_FLAG_CAPTURE, "capture"}};
  for (const auto& pair : knownBits) {
    RouteFlags bit = ROUTE_FLAGS_NONE;
    std::string token;
    std::tie(bit, token) = pair;

    if ((routeFlags & bit) == 0) {
      continue;
    }

    printToken(token);
    routeFlags = static_cast<RouteFlags>(routeFlags & ~bit);
  }

  if (routeFlags != 0) {
    printToken("0x");
    std::ios_base::fmtflags oldFmt = os.flags();
    os << std::hex << std::nouppercase
       << static_cast<unsigned>(routeFlags);
    os.flags(oldFmt);
  }

  return os;
}

} // namespace nfd
} // namespace ndn