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/*

 *

 *  Copyright (C) 2010  Mattias Runge

 *

 *  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.,

 *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 */

#include <signal.h>

#include <boost/program_options.hpp>

#include <boost/thread/mutex.hpp>

#include <boost/thread/condition.hpp>

#include <boost/thread/locks.hpp>

#include "logging/Logger.h"

#include "net/Manager.h"

#include "timer/Manager.h"

#include "config/Manager.h"

#include "can/Protocol.h"

#include "broker/Manager.h"

#include "can/Manager.h"

#include "can/Network.h"

#include "can/Monitor.h"

#include "vm/Manager.h"

#include "vm/plugin/System.h"

#include "vm/plugin/Timer.h"

#include "vm/plugin/Module.h"

using namespace atom;

logging::Logger LOG("Main");

std::vector<broker::Subscriber::Pointer> subscribers;

boost::condition on_message_condition;

boost::mutex guard_mutex;

void Handler(int status);

void CleanUp();

int main(int argc, char **argv)

{

    LOG.Info("Atom version 1.5.0 starting...");

    LOG.Info("Written by Mattias Runge 2010.");

    LOG.Info("Released under GPL version 2.");

    signal(SIGTERM, Handler);

    signal(SIGINT, Handler);

    signal(SIGQUIT, Handler);

    signal(SIGABRT, Handler);

    signal(SIGPIPE, Handler);

    config::Manager::Create();

    if (!config::Manager::Instance()->Set(argc, argv))

    {

        CleanUp();

        return EXIT_SUCCESS;

    }

    if (config::Manager::Instance()->Exist("LogFile"))

    {

        logging::Logger::OpenFile(config::Manager::Instance()->GetAsString("LogFile"));

    }

    if (config::Manager::Instance()->Exist("LogLevel"))

    {

        logging::Logger::SetLevel((logging::Logger::Level)config::Manager::Instance()->GetAsInt("LogLevel"));

    }

    if (config::Manager::Instance()->Exist("daemon"))

    {

        LOG.Info("Entering daemon mode...");

        if (daemon(0, 0) == -1)

        {

            LOG.Error("Could not enter daemon mode. Exiting...");

            CleanUp();

            return EXIT_FAILURE;

        }

        LOG.Info("Deamon mode entered successfully!");

    }

    timer::Manager::Create();

    broker::Manager::Create();

    net::Manager::Create();

    can::Protocol::Create();

    can::Manager::Create();

    vm::Manager::Create();

    if (config::Manager::Instance()->Exist("ProtocolFile"))

    {

        can::Protocol::Instance()->Load(config::Manager::Instance()->GetAsString("ProtocolFile"));

    }

    if (config::Manager::Instance()->Exist("MonitorPort"))

    {

        subscribers.push_back(can::Monitor::Pointer(new can::Monitor(config::Manager::Instance()->GetAsInt("MonitorPort"))));  

    }

    subscribers.push_back(can::Manager::Instance());  

    if (config::Manager::Instance()->Exist("CanNet"))

    {

        type::StringList cannetworks = config::Manager::Instance()->GetAsStringVector("CanNet");

        for (int n = 0; n < cannetworks.size(); n++)

        {

            subscribers.push_back(can::Network::Pointer(new can::Network(cannetworks[n])));            

        }

    }

    vm::Manager::Instance()->AddPlugin(vm::Plugin::Pointer(new vm::plugin::System()));

    vm::Manager::Instance()->AddPlugin(vm::Plugin::Pointer(new vm::plugin::Timer()));

    vm::Manager::Instance()->AddPlugin(vm::Plugin::Pointer(new vm::plugin::Module()));

    if (config::Manager::Instance()->Exist("ScriptPath"))

    {

        vm::Manager::Instance()->Start(config::Manager::Instance()->GetAsString("ScriptPath"));

    }

    LOG.Info("Initialization complete.");

    boost::mutex::scoped_lock guard(guard_mutex);

    on_message_condition.wait(guard);

    LOG.Info("Cleaning up...");

    CleanUp();

    LOG.Info("Thank you for using Atom. Goodbye!");

    return EXIT_SUCCESS;

}

void CleanUp()

{

    subscribers.clear();

    config::Manager::Delete();

    timer::Manager::Delete();

    can::Manager::Delete();

    vm::Manager::Delete();

    can::Protocol::Delete();

    broker::Manager::Delete();

    net::Manager::Delete();

}

void Handler(int status)

{

    std::string signal_name = "Unknown";

    switch (status)

    {

        case SIGTERM:

        {

            signal_name = "Terminate";

            break;

        }  

        case SIGINT:

        {

            signal_name = "Interupt";

            break;

        }  

        case SIGQUIT:

        {

            signal_name = "Quit";

            break;

        }  

        case SIGABRT:

        {

            signal_name = "Abort";

            break;

        }  

        case SIGIO:

        {

            signal_name = "I/O";

            break;

        }  

        case SIGPIPE:

        {

            signal_name = "Pipe";

            break;

        }

    }

    LOG.Debug("Received signal " + signal_name + "(" + boost::lexical_cast<std::string>(status) + ").");

    if (status != SIGPIPE)

    {

        on_message_condition.notify_all();

    }

}