#include "Logger.h"

#include "Common.h"
#include "ConfigFile.h"
#include <iostream>
#include <sstream>
#include <fstream>
#include <iomanip>

#include <stdlib.h>
#include <syslog.h>

using namespace std;

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

namespace Logger
{
	string _logFile;

	std::vector<std::string> logBuffer;

	enum LogDest
	{
		LogFile,
		LogSyslog,
		LogStdout
	};

	LogDest logger;

	void initLog()
	{
		Common* cmn = Common::instance();
		string logmethod = cmn->GetConfigfile()->GetValue("smsdaemon","log","");
		if (logmethod == "syslog")
		{
			logger = LogSyslog;

			openlog("smsdaemon", 0 , LOG_DAEMON);
		}
		else if (logmethod == "logfile")
		{
			logger = LogFile;
		}
		else
		{
			cerr << "Invalid config file setting for 'log' : " << logmethod << endl;
			exit(1);
		}

		if (cmn->isDebug)
		{
			logger = LogStdout;
		}
	}

	void setLogfile(std::string file)
	{
		_logFile = file;
	}

	void logMessage(string msg)
	{
		Common* cmn = Common::instance();
		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;

		logBuffer.push_back( out.str() );

		if (logger == LogFile || logger == LogStdout)
		{
			if (cmn->isDaemon && _logFile != "" && cmn->daemonized)
			{
				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( cmn->uid);
			}
			else
			{
				cout << out.str();
				cout.flush();
			}
		}
		else  // logSyslog
		{
			syslog(LOG_INFO, "%s", msg.c_str());
		}
	}
}