/**
 * @brief ISAAC - deep Q learning with neural networks for predicting the next sentence of a conversation
 *
 * @file main.hpp
 * @author  Norbert Bátfai <nbatfai@gmail.com>
 * @version 0.0.1
 *
 * @section LICENSE
 *
 * Copyright (C) 2015 Norbert Bátfai, batfai.norbert@inf.unideb.hu
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 *
 * @section DESCRIPTION
 * SAMU
 *
 * The main purpose of this project is to allow the evaluation and
 * verification of the results of the paper entitled "A disembodied
 * developmental robotic agent called Samu Bátfai". It is our hope
 * that Samu will be the ancestor of developmental robotics chatter
 * bots that will be able to chat in natural language like humans do.
 *
 */

#include <iostream>
#include <string>
#include <sstream>
#include <signal.h>
#include "samu.hpp"

Samu samu;
bool halted {false};

void save_samu ( int sig )
{

  if ( halted )
    return;
  halted = true;

#ifndef Q_LOOKUP_TABLE
  std::string samuImage {"samu.image.txt"};
  samu.save ( samuImage );
#endif

  samu.halt();
  exit ( 0 );
}

int main ( int argc, char **argv )
{

#ifndef Q_LOOKUP_TABLE
  std::string samuImage {"samu.image.txt"};

  std::fstream samuFile ( samuImage,  std::ios_base::in );
  if ( samuFile )
    samu.load ( samuFile );
#endif


  struct sigaction sa;
  sa.sa_handler = save_samu;
  sigemptyset ( &sa.sa_mask );
  sa.sa_flags = SA_RESTART;

  sigaction ( SIGINT, &sa, NULL );
  sigaction ( SIGTERM, &sa, NULL );
  sigaction ( SIGKILL, &sa, NULL );
  sigaction ( SIGHUP, &sa, NULL );

  // Do not remove this copyright notice!
  std::cout << "This program is Isaac, the son of Samu Bátfai."
            << std::endl
            << "Copyright (C) 2015 Norbert Bátfai"
            << std::endl
            << "License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>"
            << std::endl
            << "This is free software: you are free to change and redistribute it."
            << std::endl
            << "There is NO WARRANTY, to the extent permitted by law."
            << std::endl
            << std::endl;


  std::cout << "The prenatal development phase has started."
            << std::endl;
  //
  std::cout << "The prenatal development phase has finished."
            << std::endl;


  std::string test[] =
  {
    "A rare black squirrel has become a regular visitor to a suburban garden",
    "This is a car",
    "This car is mine",
    "I have a little car",
    "The sky is blue",
    "The little brown bear has eaten all of the honey",
    "I love Samu"
  };

  int j {0};

  for ( ; samu.run(); )
    {
      double sum {0.0};
      if ( samu.sleep() )
        {
          for ( int i {0}; i<7; ++i )
            {
              samu << test[i];
              sum += samu.reward();
              //sleep(1);
            }
          std::cerr << "###### " << ++j << "-th iter " << sum << std::endl;

/*
          if ( j == 5 )
            {
              // samu.t();

              std::string samuImage {"samu.image.txt"};

              std::fstream samuFile ( samuImage,  std::ios_base::in );
              if ( samuFile )
                samu.load ( samuFile );


            }
*/

        }
        else
	  sleep(1);
    }

  return 0;
}