#include "common.h"

#include <string>
#include <iostream>
#include <iomanip>
#include <fstream>
#include <sstream>
#include <time.h>

using namespace std;
const char* Months[] = { "", "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov","Dec"};

Common* Common::instance()
{
	static Common store;
	return &store;
}


void Common::logMessage(string msg)
{	
	time_t t = time(0);
	tm now;
	localtime_r(&t, &now);

	ostringstream out;
	out << Months[ now.tm_mon ] << " " << setw(2) << setfill('0') << now.tm_mday;
	out << " " << setw(2) << setfill('0') << now.tm_hour;
	out << ":" << setw(2) << setfill('0') << now.tm_min;
	out << ":" << setw(2) << setfill('0') << now.tm_sec;
	out << "  " << msg << endl;

	if (this->isDaemon && _logFile != "")
	{
		seteuid(0);
		ofstream of( _logFile.c_str(), ios_base::out | ios_base::app | ios_base::ate);//append mode
		if (of)
		{
			of << out.str();
			of.flush();
			of.close();
		}
		seteuid( this->uid);
	}
	else
	{
		cout << out.str();
		cout.flush();
	}
}

void Common::printUsage()
{
	cout << VERSION << endl;
	cout << "Usage --daemon|--debug [arguments]" << endl;
	cout << "Commandline arguments :" << endl;
	cout << "  --daemon : Run in daemon (background) mode" << endl;
	cout << "  --debug :  Run as normal (frontground) process," << endl;
	cout << "             with all messages written to std out" << endl;
	cout << "  --help :    Show this help screen" << endl;

	exit(0);
}

void Common::loadConfig(int argc, char* argv[])
{
	isDaemon = false;
	isDebug = false;

	for (int i = 1; i< argc; i++)
	{
		string current(argv[i]);
    	if (current == "--daemon")
		{
	        isDaemon = true;
			isDebug = false;
			
		}
		else if (current == "--debug")
		{
			isDaemon = false;
			isDebug = true;
		}
		else if (current == "-h" || current == "--help")
		{
			printUsage();
		}
		else
		{
			cout << VERSION;
			cout << "Unknown argument : " << current << endl; 
		}
	}

	if (! ( isDaemon || isDebug))
		printUsage();
}


std::string Common::getStatusMessage()
{
	long int now = time(0);

	long int diff = now - this->daemonStart;


	std::ostringstream out;
	out << "Uptime " << diff << " seconds. ";
	out << "Messages received:" << this->smsCounter.incomming << ". ";
	out << "Messages sent:" << this->smsCounter.outgoing << ".";
	
	return out.str();
}