#define BOOST_LOG_DYN_LINK 1

// clang++ -std=c++11 -l boost_log -l boost_log_setup -l boost_thread -l boost_system -l pthread boostlog.cpp

#include <iostream>
#include <fstream>
#include <string>

#include <boost/log/core.hpp>
#include <boost/log/trivial.hpp>
#include <boost/log/expressions.hpp>

#include <boost/log/sources/severity_logger.hpp>

#include <boost/log/utility/setup/common_attributes.hpp>
#include <boost/log/utility/setup/file.hpp>
#include <boost/log/utility/setup/console.hpp>
#include <boost/log/utility/setup/from_stream.hpp>


void setup_logging()
{
  std::string format = "Code: [%TimeStamp%]: %Message%";
  boost::log::add_file_log("sample.log",
                           boost::log::keywords::format = format);
  boost::log::add_console_log(std::cout,
                              boost::log::keywords::format = format);
  boost::log::core::get()->set_filter(
    boost::log::trivial::severity >= boost::log::trivial::info
    );

  std::ifstream settings_file("log.settings");
  boost::log::init_from_stream(settings_file);

}

int main(int argc, char** argv)
{
  setup_logging();
  boost::log::add_common_attributes();

  using namespace boost::log::trivial;
  boost::log::sources::severity_logger<severity_level> lg;

  BOOST_LOG_SEV(lg, trace) << "A trace severity message";
  BOOST_LOG_SEV(lg, debug) << "A debug severity message";
  BOOST_LOG_SEV(lg, info) << "An informational severity message";
  BOOST_LOG_SEV(lg, warning) << "A warning severity message";
  BOOST_LOG_SEV(lg, error) << "An error severity message";
  BOOST_LOG_SEV(lg, fatal) << "A fatal severity message";

  return 0;
}