/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/**
 * Copyright (c) 2013-2015 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 "management/nfd-controller.hpp"
#include "management/nfd-control-response.hpp"

#include <boost/tuple/tuple.hpp>

#include "boost-test.hpp"
#include "util/dummy-client-face.hpp"
#include "../make-interest-data.hpp"
#include "../unit-test-time-fixture.hpp"

namespace ndn {
namespace nfd {
namespace tests {

using ndn::util::DummyClientFace;
using ndn::util::makeDummyClientFace;

BOOST_AUTO_TEST_SUITE(Management)

class CommandFixture : public ndn::tests::UnitTestTimeFixture
{
protected:
  CommandFixture()
    : face(makeDummyClientFace(io))
    , controller(*face, keyChain)
    , commandSucceedCallback(bind(&CommandFixture::onCommandSucceed, this, _1))
    , commandFailCallback(bind(&CommandFixture::onCommandFail, this, _1, _2))
  {
  }

private:
  void
  onCommandSucceed(const ControlParameters& parameters)
  {
    commandSucceedHistory.push_back(boost::make_tuple(parameters));
  }

  void
  onCommandFail(uint32_t code, const std::string& reason)
  {
    commandFailHistory.push_back(boost::make_tuple(code, reason));
  }

protected:
  shared_ptr<DummyClientFace> face;
  KeyChain keyChain;
  Controller controller;

  Controller::CommandSucceedCallback commandSucceedCallback;
  typedef boost::tuple<ControlParameters> CommandSucceedArgs;
  std::vector<CommandSucceedArgs> commandSucceedHistory;

  Controller::CommandFailCallback commandFailCallback;
  typedef boost::tuple<uint32_t,std::string> CommandFailArgs;
  std::vector<CommandFailArgs> commandFailHistory;
};

BOOST_FIXTURE_TEST_SUITE(TestNfdController, CommandFixture)

BOOST_AUTO_TEST_CASE(CommandSuccess)
{
  ControlParameters parameters;
  parameters.setUri("tcp4://192.0.2.1:6363");

  BOOST_CHECK_NO_THROW(controller.start<FaceCreateCommand>(
                       parameters,
                       commandSucceedCallback,
                       commandFailCallback));

  advanceClocks(time::milliseconds(1));

  BOOST_REQUIRE_EQUAL(face->sentInterests.size(), 1);
  const Interest& requestInterest = face->sentInterests[0];

  FaceCreateCommand command;
  BOOST_CHECK(Name("/localhost/nfd/faces/create").isPrefixOf(requestInterest.getName()));
  // 9 components: ndn:/localhost/nfd/faces/create/<parameters>/<signed Interest x4>
  BOOST_REQUIRE_EQUAL(requestInterest.getName().size(), 9);
  ControlParameters request;
  // 4th component: <parameters>
  BOOST_REQUIRE_NO_THROW(request.wireDecode(requestInterest.getName().at(4).blockFromValue()));
  BOOST_CHECK_NO_THROW(command.validateRequest(request));
  BOOST_CHECK_EQUAL(request.getUri(), parameters.getUri());
  BOOST_CHECK_EQUAL(requestInterest.getInterestLifetime(), CommandOptions::DEFAULT_TIMEOUT);

  ControlParameters responseBody;
  responseBody.setUri("tcp4://192.0.2.1:6363")
              .setFaceId(22)
              .setFacePersistency(ndn::nfd::FacePersistency::FACE_PERSISTENCY_PERSISTENT);
  ControlResponse responsePayload(201, "created");
  responsePayload.setBody(responseBody.wireEncode());

  auto responseData = util::makeData(requestInterest.getName());
  responseData->setContent(responsePayload.wireEncode());
  face->receive(*responseData);

  advanceClocks(time::milliseconds(1));

  BOOST_CHECK_EQUAL(commandFailHistory.size(), 0);
  BOOST_REQUIRE_EQUAL(commandSucceedHistory.size(), 1);
  const ControlParameters& response = commandSucceedHistory[0].get<0>();
  BOOST_CHECK_EQUAL(response.getUri(), responseBody.getUri());
  BOOST_CHECK_EQUAL(response.getFaceId(), responseBody.getFaceId());
}

BOOST_AUTO_TEST_CASE(CommandInvalidRequest)
{
  ControlParameters parameters;
  parameters.setName("ndn:/should-not-have-this-field");
  // Uri is missing

  BOOST_CHECK_THROW(controller.start<FaceCreateCommand>(
                      parameters,
                      commandSucceedCallback,
                      commandFailCallback),
                    ControlCommand::ArgumentError);
}

BOOST_AUTO_TEST_CASE(CommandErrorCode)
{
  ControlParameters parameters;
  parameters.setUri("tcp4://192.0.2.1:6363");

  BOOST_CHECK_NO_THROW(controller.start<FaceCreateCommand>(
                         parameters,
                         commandSucceedCallback,
                         commandFailCallback));
  advanceClocks(time::milliseconds(1));

  BOOST_REQUIRE_EQUAL(face->sentInterests.size(), 1);
  const Interest& requestInterest = face->sentInterests[0];

  ControlResponse responsePayload(401, "Not Authenticated");

  auto responseData = util::makeData(requestInterest.getName());
  responseData->setContent(responsePayload.wireEncode());
  face->receive(*responseData);
  advanceClocks(time::milliseconds(1));

  BOOST_CHECK_EQUAL(commandSucceedHistory.size(), 0);
  BOOST_REQUIRE_EQUAL(commandFailHistory.size(), 1);
  BOOST_CHECK_EQUAL(commandFailHistory[0].get<0>(), 401);
}

BOOST_AUTO_TEST_CASE(CommandInvalidResponse)
{
  ControlParameters parameters;
  parameters.setUri("tcp4://192.0.2.1:6363");

  BOOST_CHECK_NO_THROW(controller.start<FaceCreateCommand>(
                         parameters,
                         commandSucceedCallback,
                         commandFailCallback));
  advanceClocks(time::milliseconds(1));

  BOOST_REQUIRE_EQUAL(face->sentInterests.size(), 1);
  const Interest& requestInterest = face->sentInterests[0];

  ControlParameters responseBody;
  responseBody.setUri("tcp4://192.0.2.1:6363")
              .setName("ndn:/should-not-have-this-field");
  // FaceId is missing
  ControlResponse responsePayload(201, "created");
  responsePayload.setBody(responseBody.wireEncode());

  auto responseData = util::makeData(requestInterest.getName());
  responseData->setContent(responsePayload.wireEncode());
  face->receive(*responseData);
  advanceClocks(time::milliseconds(1));

  BOOST_CHECK_EQUAL(commandSucceedHistory.size(), 0);
  BOOST_REQUIRE_EQUAL(commandFailHistory.size(), 1);
}

BOOST_AUTO_TEST_CASE(CommandNack)
{
  ControlParameters parameters;
  parameters.setUri("tcp4://192.0.2.1:6363");

  BOOST_CHECK_NO_THROW(controller.start<FaceCreateCommand>(
                       parameters,
                       commandSucceedCallback,
                       commandFailCallback));
  advanceClocks(time::milliseconds(1));

  BOOST_REQUIRE_EQUAL(face->sentInterests.size(), 1);
  const Interest& requestInterest = face->sentInterests[0];

  auto responseNack = util::makeNack(requestInterest, lp::NackReason::NO_ROUTE);
  face->receive(responseNack);
  advanceClocks(time::milliseconds(1));

  BOOST_REQUIRE_EQUAL(commandFailHistory.size(), 1);
  BOOST_CHECK_EQUAL(commandFailHistory[0].get<0>(), Controller::ERROR_NACK);
}

BOOST_AUTO_TEST_CASE(OptionsPrefix)
{
  ControlParameters parameters;
  parameters.setName("/ndn/com/example");
  parameters.setFaceId(400);

  CommandOptions options;
  options.setPrefix("/localhop/net/example/router1/nfd");

  BOOST_CHECK_NO_THROW(controller.start<RibRegisterCommand>(
                       parameters,
                       commandSucceedCallback,
                       commandFailCallback,
                       options));
  advanceClocks(time::milliseconds(1));

  BOOST_REQUIRE_EQUAL(face->sentInterests.size(), 1);
  const Interest& requestInterest = face->sentInterests[0];

  FaceCreateCommand command;
  BOOST_CHECK(Name("/localhop/net/example/router1/nfd/rib/register").isPrefixOf(
              requestInterest.getName()));
}

BOOST_AUTO_TEST_CASE(OptionsTimeout)
{
  ControlParameters parameters;
  parameters.setUri("tcp4://192.0.2.1:6363");

  CommandOptions options;
  options.setTimeout(time::milliseconds(50));

  BOOST_CHECK_NO_THROW(controller.start<FaceCreateCommand>(
                       parameters,
                       commandSucceedCallback,
                       commandFailCallback,
                       options));
  advanceClocks(time::milliseconds(1), 101); // Face's PIT granularity is 100ms

  BOOST_REQUIRE_EQUAL(commandFailHistory.size(), 1);
  BOOST_CHECK_EQUAL(commandFailHistory[0].get<0>(), Controller::ERROR_TIMEOUT);
}

BOOST_AUTO_TEST_SUITE_END() // TestController
BOOST_AUTO_TEST_SUITE_END() // Management

} // namespace tests
} // namespace nfd
} // namespace ndn