/*]  Copyright (c) 2009-2010, Charles McGarvey  [**************************
**]  All rights reserved.
*
* vi:ts=4 sw=4 tw=75
*
* Distributable under the terms and conditions of the 2-clause BSD license;
* see the file COPYING for a complete text of the license.
*
**************************************************************************/

#include <fstream>

#if !defined(__WIN32)
#include <termios.h>
#else
int isatty(int dummy) { return 0; }
#endif


#include "log.hh"
#include "script.hh"


namespace moof {


enum log::level log::global_level_ = log::info;


void log::level(enum level level)
{
	global_level_ = level;
}

enum log::level log::level()
{
	return global_level_;
}


log::log(enum level level) :
	level_(level)
{
	if (isatty(1) == 0)
		switch (level)
		{
			case log::error:	prefix_ = "  error: ";	break;
			case log::warning:	prefix_ = "warning: ";	break;
			case log::info:		prefix_ = "   info: ";	break;
			case log::none:		break;
		}
	else
		switch (level)
		{
			case log::error:	prefix_ = "\033[101m  error: ";	break;
			case log::warning:	prefix_ = "\033[103mwarning: ";	break;
			case log::info:		prefix_ = "   info: ";			break;
			case log::none:		break;
		}
}

std::ostream& operator << (class log& log, log::endl_ endl)
{
	if (log::global_level_ < log.level_) return null_log;
	if (isatty(1) == 0) return moof::log << std::endl;
	else return moof::log << "\033[0m" << std::endl;
}

std::ostream& operator << (std::ostream& stream, log::endl_ endl)
{
	if (isatty(1) == 0) return stream << std::endl;
	else return stream << "\033[0m" << std::endl;
}


std::ostream& log(std::cout);

static std::ofstream null_log_;
std::ostream& null_log(null_log_);

class log log_error(  log::error);
class log log_warning(log::warning);
class log log_info(   log::info);


static int log_script(script& script, enum log::level level)
{
	static class log* logs[] = {0, &log_error, &log_warning, &log_info};

	script::slot param = script[1];

	while (!param.is_none())
	{
		(*logs[level])(param);
		++param.index;
	}

	return 0;
}

void log::import(script& script)
{
	script.import_function("LogError",
						  boost::bind(log_script, _1, log::error));
	script.import_function("LogWarning",
						  boost::bind(log_script, _1, log::warning));
	script.import_function("LogInfo",
						  boost::bind(log_script, _1, log::info));
	script.import_function("print",
						  boost::bind(log_script, _1, log::info));
}


} // namespace moof