/*
 * Copyright (C) 2013 Red Hat, Inc.
 * Authors:
 * Thomas Woerner <twoerner@redhat.com>
 *
 * This program 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 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#include "fwlog.h"

#include <stdio.h>
#include <stdarg.h>
#include <syslog.h>
#include <errno.h>
#include <glib.h>

int fwlog_level_info;
int fwlog_level_debug;

char *fwlog_priorities[] = {
    "FATAL",
    "ERROR",
    "WARNING",
    "INFO",
    "DEBUG",
    NULL
};

void fwlog_init(int info_level, int debug_level)
{
    g_assert(info_level >= FWLOG_NO_INFO);
    g_assert(info_level <= FWLOG_INFO_MAX);
    g_assert(debug_level >= FWLOG_NO_DEBUG);
    g_assert(debug_level <= FWLOG_DEBUG_MAX);

    fwlog_level_info = info_level;
    fwlog_level_debug = debug_level;
}

void fwlog_set_info_level(int level)
{
    g_assert(level >= FWLOG_NO_INFO);
    g_assert(level <= FWLOG_INFO_MAX);

    fwlog_level_info = level;
}

void fwlog_set_debug_level(int level)
{
    g_assert(level >= FWLOG_NO_DEBUG);
    g_assert(level <= FWLOG_DEBUG_MAX);

    fwlog_level_debug = level;
}

int
fwlog_log(int priority,
       int level,
       const char *format,
       ...)
{
    char buffer[LINE_MAX];
    time_t t;
    struct tm *timep;
    size_t used=0;
    va_list ap;
    size_t res=0;

    /* date */
    t = time(NULL);
    timep = localtime(&t);
    if (timep != NULL) {
	res = strftime(buffer, sizeof(buffer), "%Y-%m-%d %H:%M:%S ", timep);
    }
    used += res;

    /* proiority */
    if (priority == FWLOG_INFO || priority == FWLOG_DEBUG)
	res = snprintf(buffer+used, sizeof(buffer)-used, "%s%d: ",
		       fwlog_priorities[priority], level);
    else
	res = snprintf(buffer+used, sizeof(buffer)-used, "%s: ",
		       fwlog_priorities[priority]);
    used += res;

    /* format+ap */
    va_start(ap, format);
    res = vsnprintf(buffer+used, sizeof(buffer)-used, format, ap);
    va_end(ap);
    used += res;

    /* newline */
    res = snprintf(buffer+used, sizeof(buffer)-used, "\n");

    g_print(buffer);
    /* syslog(priority, buffer); */

    return used+res;
}