/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil -*- */
/*
 * Copyright (c) 2012-2014 University of California, Los Angeles
 *
 * This file is part of ChronoSync, synchronization library for distributed realtime
 * applications for NDN.
 *
 * ChronoSync 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.
 *
 * ChronoSync 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
 * ChronoSync, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <boost/test/unit_test.hpp>
#include <boost/test/output_test_stream.hpp>
#include <map>
using boost::test_tools::output_test_stream;

#include <boost/make_shared.hpp>
#include "sync-scheduler.h"
#include "sync-logic.h"

using namespace Sync;
using namespace std;
using namespace boost;


// void funcUpdate (const std::string &, const SeqNo &newSeq, const SeqNo &oldSeq)
// {
//   cout << "funcUpdate\n";
// }

// void funcRemove (const std::string &)
// {
//   cout << "funcRemove\n";
// }

enum SCHEDULE_LABELS
  {
    TEST_LABEL,
    ANOTHER_LABEL
  };

struct SchedulerFixture
{
  SchedulerFixture ()
    : counter (0)
  {}

  int counter;

  Scheduler *scheduler;

  void everySecond ()
  {
    // cout << "." << flush;
    counter ++;

    if (counter < 9)
    scheduler->schedule (boost::posix_time::milliseconds (100),
                         boost::bind (&SchedulerFixture::everySecond, this),
                         TEST_LABEL);
  }

  void setCounterFive ()
  {
    counter = 5;
  }

  void setCounterThree ()
  {
    counter = 3;
  }
};


#ifdef _DEBUG

BOOST_FIXTURE_TEST_SUITE (SchedulerTestSuite, SchedulerFixture)

BOOST_AUTO_TEST_CASE (BasicTest)
{
  BOOST_CHECK_NO_THROW (scheduler = new Scheduler ());

  scheduler->schedule (posix_time::milliseconds (100),
                       bind (&SchedulerFixture::everySecond, this),
                       TEST_LABEL);

  sleep (1);
  // cout << counter << endl;
  BOOST_CHECK_EQUAL (counter, 9); // generally, should be 9

  scheduler->schedule (posix_time::seconds (2),
		       bind (&SchedulerFixture::setCounterFive, this),
                       TEST_LABEL);

  this_thread::sleep (posix_time::milliseconds (400)); // just in case

  scheduler->schedule (posix_time::milliseconds (600),
		       bind (&SchedulerFixture::setCounterThree, this),
                       TEST_LABEL);

  this_thread::sleep (posix_time::milliseconds (500));
  BOOST_CHECK_EQUAL (counter, 9); // still 9

  this_thread::sleep (posix_time::milliseconds (200));
  BOOST_CHECK_EQUAL (counter, 3);

  this_thread::sleep (posix_time::milliseconds (1000));
  BOOST_CHECK_EQUAL (counter, 5);

  scheduler->schedule (posix_time::milliseconds (100),
		       bind (&SchedulerFixture::setCounterThree, this),
                       ANOTHER_LABEL);
  this_thread::sleep (posix_time::milliseconds (50));
  scheduler->cancel (ANOTHER_LABEL);
  this_thread::sleep (posix_time::milliseconds (150));
  BOOST_CHECK_EQUAL (counter, 5);

  BOOST_CHECK_NO_THROW (delete scheduler);
}

BOOST_AUTO_TEST_SUITE_END ()


void funcUpdate( const std::string &/*prefix*/, const SeqNo &/*newSeq*/, const SeqNo &/*oldSeq*/ )
{
}

void funcPass( const std::vector<MissingDataInfo> &v)
{
}

void funcRemove( const std::string &/*prefix*/ )
{
}

BOOST_AUTO_TEST_CASE (SyncLogicSchedulerTest)
{
  SyncLogic *logic = 0;
  BOOST_CHECK_NO_THROW (logic = new SyncLogic ("/prefix", funcPass, funcRemove));
  this_thread::sleep (posix_time::milliseconds (100));

  Scheduler &scheduler = logic->getScheduler ();
  BOOST_CHECK_EQUAL (scheduler.getEventsSize (), 1);

  BOOST_CHECK_NO_THROW (logic->respondSyncInterest ("/prefix/e5fa44f2b31c1fb553b6021e7360d07d5d91ff5e"));
  BOOST_CHECK_EQUAL (scheduler.getEventsSize (), 2);

  this_thread::sleep (posix_time::milliseconds (100)); // max waiting time
  BOOST_CHECK_EQUAL (scheduler.getEventsSize (), 1);

  BOOST_CHECK_NO_THROW (logic->respondSyncInterest ("/prefix/e5fa44f2b31c1fb553b6021e7360d07d5d91ff5e"));
  BOOST_CHECK_NO_THROW (logic->respondSyncInterest ("/prefix/e5fa44f2b31c1fb553b6021e7360d07d5d91ff5e"));
  BOOST_CHECK_NO_THROW (logic->respondSyncInterest ("/prefix/e5fa44f2b31c1fb553b6021e7360d07d5d91ff5e"));
  BOOST_CHECK_NO_THROW (logic->respondSyncInterest ("/prefix/e5fa44f2b31c1fb553b6021e7360d07d5d91ff5e"));
  BOOST_CHECK_EQUAL (scheduler.getEventsSize (), 5);

  this_thread::sleep (posix_time::milliseconds (19)); // min waiting time is 20
  BOOST_CHECK_EQUAL (scheduler.getEventsSize (), 5);

  this_thread::sleep (posix_time::milliseconds (100)); // max waiting time
  BOOST_CHECK_EQUAL (scheduler.getEventsSize (), 1);

  BOOST_CHECK_NO_THROW (delete logic);
}

#endif