/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/**
 * Copyright (c) 2014-2017,  The University of Memphis,
 *                           Regents of the University of California,
 *                           Arizona Board of Regents.
 *
 * This file is part of NLSR (Named-data Link State Routing).
 * See AUTHORS.md for complete list of NLSR authors and contributors.
 *
 * NLSR 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.
 *
 * NLSR 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
 * NLSR, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
 **/

#include "test-common.hpp"
#include "sequencing-manager.hpp"
#include <boost/test/unit_test.hpp>
#include <boost/filesystem.hpp>
#include <string>
#include <iostream>
#include <fstream>

using namespace ndn;

namespace nlsr {

namespace test {

class SequencingManagerFixture : public BaseFixture
{
public:
  SequencingManagerFixture()
  : m_seqNumbers("")
  , m_seqManager()
  {
    setFileDir();
  }

  ~SequencingManagerFixture()
  {
    boost::filesystem::remove(seqFile);
  }

  void
  setFileDir() {
    m_seqManager.setSeqFileDirectory("/tmp");
  }

  void
  writeToFile(const std::string& testSeq) {
    std::ofstream outputFile(seqFile, std::ofstream::trunc);
    outputFile << testSeq;
    outputFile.close();
  }

  void
  initiateFromFile(const int& type) {
    m_seqManager.initiateSeqNoFromFile(type);
  }

  void
  checkSeqNumbers(const uint64_t& name, const uint64_t& adj, const uint64_t& cor) {
    BOOST_CHECK_EQUAL(m_seqManager.getNameLsaSeq(), name);

    BOOST_CHECK_EQUAL(m_seqManager.getAdjLsaSeq(), adj);

    BOOST_CHECK_EQUAL(m_seqManager.getCorLsaSeq(), cor);
  }

private:
  std::string m_seqNumbers;
  std::string seqFile = "/tmp/nlsrSeqNo.txt";
  SequencingManager m_seqManager;
};

BOOST_FIXTURE_TEST_SUITE(TestSequencingManager, SequencingManagerFixture)

BOOST_AUTO_TEST_CASE(CombinedSeqNumber)
{
  // LS
  writeToFile("27121653322350672");

  initiateFromFile(HYPERBOLIC_STATE_OFF);

  checkSeqNumbers(24667+10, 80+10, 0);

  // HR
  writeToFile("27121653322350672");

  initiateFromFile(HYPERBOLIC_STATE_ON);

  // AdjLsa is set to 0 since HR is on
  checkSeqNumbers(24667+10, 0, 0+10);
}

BOOST_AUTO_TEST_CASE(SeparateSeqNumber)
{
  // LS
  writeToFile("NameLsaSeq 100\nAdjLsaSeq 100\nCorLsaSeq 0");

  initiateFromFile(HYPERBOLIC_STATE_OFF);

  checkSeqNumbers(100+10, 100+10, 0);

  // HR
  writeToFile("NameLsa 100\nAdjLsa 0\nCorLsa 100");

  initiateFromFile(HYPERBOLIC_STATE_ON);

  // AdjLsa is set to 0 since HR is on
  checkSeqNumbers(100+10, 0, 100+10);
}

BOOST_AUTO_TEST_SUITE_END()

} // namespace test
} // namespace nlsr