logger.h

#ifndef LOGGER_H_INCLUDED_
#define LOGGER_H_INCLUDED_

#include "kblib/stringops.h"

namespace detail {
void log(std::string_view str);
} // namespace detail

enum class log_level {
    silent = 0,
    err = 1,
    warn = 2,
    notice = 3,
    info = 4,
    debug = 5,
};

void set_log_level(log_level);
log_level get_log_level();

void set_log_output(std::ostream&);

template <typename... Strings>
void log_debug(Strings&&... strings) {
    if (get_log_level() >= log_level::debug) {
        detail::log(kblib::concat("DEBUG: ", strings...));
    }
}

template <typename... Strings>
void log_info(Strings&&... strings) {
    if (get_log_level() >= log_level::info) {
        detail::log(kblib::concat("INFO: ", strings...));
    }
}

template <typename... Strings>
void log_notice(Strings&&... strings) {
    if (get_log_level() >= log_level::notice) {
        detail::log(kblib::concat("NOTICE: ", strings...));
    }
}

template <typename... Strings>
void log_warn(Strings&&... strings) {
    if (get_log_level() >= log_level::warn) {
        detail::log(kblib::concat("WARN: ", strings...));
    }
}

template <typename... Strings>
void log_err(Strings&&... strings) {
    if (get_log_level() >= log_level::err) {
        detail::log(kblib::concat("ERROR: ", strings...));
    }
}

#endif // LOGGER_H_INCLUDED_