#include "logger_syslog.hh"

#include <string>
#include <syslog.h>

#include "logger_base.hh"

namespace {

class LoggerSyslogImpl : public LoggerBase {
public:
  explicit LoggerSyslogImpl(std::string const& prgname)
    : ident_(prgname) {
    openlog(ident_.c_str(), LOG_PID, LOG_DAEMON);
  }

  ~LoggerSyslogImpl() override {
    closelog();
  }

protected:
  void msg(Level lvl, std::string_view msg) override {
    int prio;
    switch (lvl) {
    case Level::ERR:
      prio = LOG_ERR;
      break;
    case Level::WARN:
      prio = LOG_WARNING;
      break;
    case Level::INFO:
      prio = LOG_INFO;
      break;
    case Level::DBG:
      prio = LOG_DEBUG;
      break;
    }
    syslog(prio, "%.*s", static_cast<int>(msg.length()), msg.data());
  }

private:
  std::string const ident_;
};

}  // namespace

std::unique_ptr<Logger> LoggerSyslog::create(std::string const& prgname) {
  return std::make_unique<LoggerSyslogImpl>(prgname);
}