/* log.h
 *
 * Tox DHT bootstrap daemon.
 * Logging utility with support of multipel logging backends.
 *
 *  Copyright (C) 2015-2016 Tox project All Rights Reserved.
 *
 *  This file is part of Tox.
 *
 *  Tox is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  Tox is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with Tox.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef LOG_H
#define LOG_H

#include <stdbool.h>

typedef enum LOG_BACKEND {
    LOG_BACKEND_SYSLOG,
    LOG_BACKEND_STDOUT
} LOG_BACKEND;

typedef enum LOG_LEVEL {
    LOG_LEVEL_INFO,
    LOG_LEVEL_WARNING,
    LOG_LEVEL_ERROR
} LOG_LEVEL;

/**
 * Initializes logger.
 * @param backend Specifies which backend to use.
 * @return true on success, flase if log is already opened.
 */
bool open_log(LOG_BACKEND backend);

/**
 * Releases all used resources by the logger.
 * @return true on success, flase if log is already closed.
 */
bool close_log();

/**
 * Writes a message to the log.
 * @param level Log level to use.
 * @param format printf-like format string.
 * @param ... Zero or more arguments, similar to printf function.
 * @return true on success, flase if log is closed.
 */
bool write_log(LOG_LEVEL level, const char *format, ...);


#endif // LOG_H
