#include <mutex>
  #include <stdio.h>
  #include <stdint.h>
  #include <stdarg.h>
  #include <sys/time.h>
  #include <string>
  #include <string.h>
  #include <time.h>
  #include <unistd.h>
  #include "main.h"
  #include "tools.h"
  
  std::mutex log_mutex;
  
  void lprintf(const char *format, ...)
  {
    // Only print if debug flag is set, else do nothing
    if (debugFlag) {
      va_list ap;
      char fmt[2048];

      //actual time
      time_t rawtime;
      struct tm *timeinfo;
      time(&rawtime);
      timeinfo = localtime(&rawtime);
      char buf[256];
      strcpy(buf, asctime(timeinfo));
      buf[strlen(buf)-1] = 0;

      //connect with args
      snprintf(fmt, sizeof(fmt), "%s %s\n", buf, format);

      //put on screen:
      va_start(ap, format);
      vprintf(fmt, ap);
      va_end(ap);

      //to the logfile:
      static FILE *log;
      log_mutex.lock();
      log = fopen(LOG_FILE, "a");
      va_start(ap, format);
      vfprintf(log, fmt, ap);
      va_end(ap);
      fclose(log);
      log_mutex.unlock();
    }
  }
  
  
  int print_help()
  {
    printf("USAGE:  skymax [-r <raw command>] | [-h | --help]\n\n");
    printf("RAW COMMAND EXAMPLES (see protocol manual for complete list):\n");
    printf("Set output source priority  POP00     (Utility first)\n");
    printf("                            POP01     (Solar first)\n");
    printf("                            POP02     (SBU)\n");
    printf("Set charger priority        PCP00     (Utility first)\n");
    printf("                            PCP01     (Solar first)\n");
    printf("                            PCP02     (Solar and utility)\n");
    printf("                            PCP03     (Solar only)\n");
    printf("Set other commands          PEa / PDa (Enable/disable buzzer)\n");
    printf("                            PEb / PDb (Enable/disable overload bypass)\n");
    printf("                            PEj / PDj (Enable/disable power saving)\n");
    printf("                            PEu / PDu (Enable/disable overload restart)\n");
    printf("                            PEx / PDx (Enable/disable backlight)\n");
    return 1;
  }