// \file serviceProgram.cpp
//
// Service program for testing CodeDweller::Service.
//
// Usage:
//
//    serviceProgram <logFileName>
//
// where <logFileName> is the name of a file to write to.
//
// This program:
//
//  1) Registers a callback for the Stop message that sets a stop
//     flag.
//
//  2) While the stop flag is false, output a message to the log file
//     every 2 seconds.
//
//  3) After Stop is received, output the value returned by
//     Service::receivedStop().
//
//  4) Call Service::clearReceivedStop(), and repeate step 3.
//
//  5) Exit.
//
// Copyright (C) 2014 MicroNeil Research Corporation.
//
// This program is part of the MicroNeil Research Open Library Project. For
// more information go to http://www.microneil.com/OpenLibrary/index.html
//
// This program 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 2 of the License, or (at your
// option) any later version.
//
// This program 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
// this program; if not, write to the Free Software Foundation, Inc., 59 Temple
// Place, Suite 330, Boston, MA 02111-1307 USA
//==============================================================================

#include <unistd.h>

#include <cstdlib>
#include <fstream>

#include "CodeDweller/service.hpp"

/// Callback functor for Stop message.
class StopCallback : public CodeDweller::Service::Callback {

public:

  StopCallback() : stopFlag(false) {}

  bool stopFlag;

  void operator()() {
    stopFlag = true;
  }

};

StopCallback stopCallback;

int CodeDweller::Service::run() {

  // Get the singleton.
  CodeDweller::Service &service = CodeDweller::Service::getInstance();

  // Get the log file name.
  auto arguments = service.arguments();

  if (arguments.size() != 2) {
    return(EXIT_FAILURE);
  }

  // Get log file.
  std::ofstream logStream(arguments[1]);
  
  // Register the Stop callback.
  service.onStopCall(&stopCallback);

  while (!stopCallback.stopFlag) {

    logStream << "Sleeping 2 s" << std::endl;
    sleep(2);

  }

  logStream << "receivedStop():  " << service.receivedStop() << std::endl;
  service.clearReceivedStop();
  logStream << "receivedStop():  " << service.receivedStop() << std::endl;

  logStream.close();

  return(EXIT_SUCCESS);
}