#include "log/Log.h"

#include <string.h>
#include <time.h>
#include <stdio.h>
#include <stdarg.h>

#define LOG_FILE_PATH_MAX 256
// #define LOG_LINE_MAX 256

static FILE* logFile = NULL;
static char logFilePath[LOG_FILE_PATH_MAX];

void initLogger(const char* logfile)
{
  strcpy(logFilePath, logfile);
  if (logFile != NULL) {
    fclose(logFile);
  }
  logFile = fopen(logFilePath, "a");
  if (logFile == NULL) {
      fprintf(stderr, "Unable to open logfile\n");
  }
}

void clearLogs(void)
{
  if (logFile != NULL) {
    closeLogger();
  }
  if (remove(logFilePath) != 0) {
    fprintf(stderr, "Unable to remove logfile\n");
  }
  initLogger(logFilePath);
}

__attribute__((__format__ (__printf__, 2, 0)))
void writeLog(const char* tag, const char* format, ...)
{
  time_t now = time(NULL);
  struct tm* timeinfo = localtime(&now);
  char timestamp[20];
  va_list args;

  strftime(timestamp, sizeof(timestamp), "%Y-%m-%d %H:%M:%S", timeinfo);
  
  va_start(args, format);
  fprintf(logFile, "%s %s ", timestamp, tag);
  vfprintf(logFile, format, args);
  fprintf(logFile, "\n");
  va_end(args);

  fflush(logFile);
}

void closeLogger(void)
{
  if (logFile != NULL) {
    fclose(logFile);
    logFile = NULL;
  }
}