#include "logging.h"

#include <time.h>

#include <stdio.h>

#include <stdarg.h>

#include <stdlib.h>

static int flib_loglevel = FLIB_LOGLEVEL_INFO;

static FILE *flib_logfile = NULL;

char* flib_format_ip(uint32_t numip) {

	static char ip[16];

	snprintf(ip, 16, "%u.%u.%u.%u", (unsigned)(numip>>24), (unsigned)((numip>>16)&0xff), (unsigned)((numip>>8)&0xff), (unsigned)(numip&0xff));

	return ip;

}

static inline FILE *flib_log_getfile() {

	if(flib_logfile==NULL) {

		return stdout;

	} else {

		return flib_logfile;

	}

}

static void log_time() {

    time_t timer;

    char buffer[25];

    struct tm* tm_info;

    time(&timer);

    tm_info = localtime(&timer);

    strftime(buffer, 25, "%Y-%m-%d %H:%M:%S", tm_info);

    fprintf(flib_log_getfile(), "%s", buffer);

}

static void flib_vflog(const char *prefix, int level, const char *fmt, va_list args) {

	FILE *logfile = flib_log_getfile();

	if(level >= flib_loglevel) {

		fprintf(logfile, "%s ", prefix);

		log_time(logfile);

		fprintf(logfile, "  ", prefix);

		vfprintf(logfile, fmt, args);

		fprintf(logfile, "\n");

		fflush(logfile);

	}

}

void flib_log_e(const char *fmt, ...) {

	va_list argp;

	va_start(argp, fmt);

	flib_vflog("E", FLIB_LOGLEVEL_ERROR, fmt, argp);

	va_end(argp);

}

void flib_log_w(const char *fmt, ...) {

	va_list argp;

	va_start(argp, fmt);

	flib_vflog("W", FLIB_LOGLEVEL_WARNING, fmt, argp);

	va_end(argp);

}

void flib_log_i(const char *fmt, ...) {

	va_list argp;

	va_start(argp, fmt);

	flib_vflog("I", FLIB_LOGLEVEL_INFO, fmt, argp);

	va_end(argp);

}

void flib_log_d(const char *fmt, ...) {

	va_list argp;

	va_start(argp, fmt);

	flib_vflog("D", FLIB_LOGLEVEL_DEBUG, fmt, argp);

	va_end(argp);

}

int flib_log_getLevel() {

	return flib_loglevel;

}

void flib_log_setLevel(int level) {

	flib_loglevel = level;

}

void flib_log_setFile(FILE *file) {

	flib_logfile = file;

}

bool flib_log_isActive(int level) {

	return level >= flib_log_getLevel();

}