#include "SmsDaemon.h"

#include <string>

#include <sstream>
#include <stdlib.h>

#include "Common.h"

#include "ISmsTransceiver.h"

#include "Plugin.h"
#include "kbhit.h"

#include "Util.h"

#include "TaskManager.h"
#include "PluginManager.h"
#include "ConfigFile.h"
#include "Logger.h"
#include "AccessManager.h"

#include "version.h"

using namespace std;

void SmsDaemon::CreateLogMessage(SMS& sms,bool hasPlugin)
{
	ostringstream os;
	os << "Recieved sms from " << sms.GetSender() << " ; command=" << sms.ExtractCommand();
	if (!hasPlugin)
		os << " -- PLUGIN NOT FOUND";

	Logger::logMessage(os.str());
}


void SmsDaemon::CheckSms()
{
	const int INTERVAL = 1000; //no of milliseconds between sms checks
	timeval now = Util::GetTimeOfDay();

	if ( Util::mTimeDiff(_lastSmsCheck,now) < INTERVAL)
		return;

	_lastSmsCheck = now;

	Common* cmn = Common::instance();

	PluginManager* manager = cmn->GetPluginManager();
	vector<SMS> sms = _modem.ReadSms();

	for (unsigned int i=0; i<sms.size(); ++i)
	{
		string cmd = sms[i].ExtractCommand();

		cmd = Util::str_tolower(cmd);

		Plugin* pl = manager->GetPlugin(cmd);

		CreateLogMessage(sms[i], pl != 0);

		if (pl)
		{
			pl->Execute(_modem, sms[i]);
		}
		else
		{
			_modem.SendSms(sms[i].GetSender(), "Unknown command!", false);
		}

		cmn->smsCounter.incomming++;
	}
}


void SmsDaemon::MainLoop()
{
	Common* cmn = Common::instance();
	volatile bool& mainContinue = cmn->mainContinue;
	volatile bool& reloadConfig = cmn->reloadConfig;

	mainContinue = true;

	while (mainContinue)
	{

		CheckSms();

		cmn->GetTaskManager()->ExecuteTasks(_modem);

		if (cmn->isDebug && kbhit())
			break;

		if (reloadConfig)
			ReloadConfig();

		Util::Sleep(100);

	}
}

void SmsDaemon::ReloadConfig()
{
	Common* cmn = Common::instance();
	cmn->reloadConfig = false;

	cmn->GetConfigfile()->Reload();

	cmn->GetPluginManager()->DestroyPlugins();
	cmn->GetPluginManager()->LoadPlugins();

	cmn->GetTaskManager()->DestroyTasks();
	cmn->GetTaskManager()->LoadTasks();

	AccessManager::Load(); //reload blaclist & privileged list
}

void SmsDaemon::Start()
{
	Common* cmn = Common::instance();
	string transceiver = cmn->GetConfigfile()->GetValue("smsdaemon","transceiver");

	srand(time(0));

	cmn->daemonStart = time(0);
	_lastSmsCheck = Util::GetTimeOfDay();

	Logger::logMessage("--------------------------------");
	Logger::logMessage( VERSION );
	Logger::logMessage( SVNVERSION );
	Logger::logMessage( string("Transceiver: ") + transceiver );

	AccessManager::Load(); //reload blaclist & privileged list
	cmn->GetTaskManager()->LoadTasks();
	cmn->GetPluginManager()->LoadPlugins();
	Logger::logMessage("SMS daemon started");


	try
	{
		MainLoop();
	}
	catch (std::exception& e)
	{
		Logger::logMessage( e.what() );
	}
	catch (...)
	{
		Logger::logMessage( "Caught unknown exception" );
	}

	cmn->GetPluginManager()->DestroyPlugins();

	Logger::logMessage( cmn->getStatusMessage() );
}