#include <stdio.h>
#include <stdarg.h>
#include <time.h>
#include <sys/time.h>
#include "log.h"

/* string equivalents to the severity values */
static const char *severities[] = { "FATAL", "ERROR", "WARN ", "INFO ", "DEBUG" };

static FILE *logfile = stdout;  /* log file pointer */

void Log(int level, const char *format, ...)
{
  va_list argp;
  struct timeval tv;
  struct tm tm;
  char timestamp[32];
  char buf[1024];

  va_start(argp, format);
  vsnprintf(buf, 1024, format, argp);
  va_end(argp);

  gettimeofday(&tv, NULL);
  localtime_r(&(tv.tv_sec), &tm);
  strftime(timestamp, 32, "%F %T", &tm);
  fprintf(logfile, "%s.%06u %s %s\n", timestamp, tv.tv_usec, severities[level], buf);
}

void Log_assert_failed(const char *test, const char *file, int line)
{
  Log(LERROR, "ASSERT FAILED: %s at %s:%d", test, file, line);
}