/*
 * This file is a part of Winix
 * and is distributed under the 2-Clause BSD licence.
 * Author: Tomasz Sowa <t.sowa@ttmath.org>
 */

/*
 * Copyright (c) 2008-2018, Tomasz Sowa
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 */

#include "filelog.h"
#include <ctime>
#include <string.h>
#include "utf8/utf8.h"
#include "timezones.h"



namespace Winix
{



FileLog::FileLog()
{
	log_stdout = false;
	log_file_open = false;
	time_zones = nullptr;
	synchro = nullptr;
	log_time_zone_id = 0;
}


FileLog::~FileLog()
{
}


void FileLog::set_synchro(Synchro * synchro)
{
	this->synchro = synchro;
}


void FileLog::init(const std::wstring & log_file, bool log_stdout, int log_level, bool save_each_line, size_t log_time_zone_id)
{
	this->log_stdout = log_stdout;
	this->log_time_zone_id = log_time_zone_id;
	this->log_level = log_level;
	this->save_each_line = save_each_line;
	PT::WideToUTF8(log_file, this->log_file);
	// don't open the file here
	// because it would be created with the root as an owner
}


void FileLog::set_time_zones(TimeZones * time_zones)
{
	this->time_zones = time_zones;
}


int FileLog::get_log_level()
{
	return log_level;
}


bool FileLog::should_save_each_line()
{
	return save_each_line;
}




PT::Date FileLog::get_local_date(const PT::Date & date)
{
	if( time_zones )
	{
		TimeZone * tz = time_zones->GetZone(log_time_zone_id);

		if( tz )
		{
			PT::Date local_date = tz->ToLocal(date);
			return local_date;
		}
		else
		{
			return date;
		}
	}
	else
	{
		return date;
	}
}



void FileLog::open_file()
{
	if( !log_file.empty() )
	{
		file.open( log_file.c_str(), std::ios_base::out | std::ios_base::app );
		log_file_open = true;
	}
}



void FileLog::save_log(TextStream<std::wstring> * buffer)
{
	if( buffer->Str().empty() )
		return;

	if( synchro )
	{
		synchro->Lock();
	}

	try
	{
		if( log_stdout )
			PT::WideToUTF8(buffer->Str(), std::cout);

		if( log_file.empty() )
			return;

		if( !log_file_open || !file )
		{
			file.close();
			file.clear();

			open_file();

			if( !file )
				return;
		}

		PT::WideToUTF8(buffer->Str(), file);
		file.flush();
	}
	catch(...)
	{
	}

	if( synchro )
	{
		synchro->Unlock();
	}
}





} // namespace Winix