/*
  Forum: https://forum.arduino.cc/t/old-working-code-no-longer-compiles/1448406
  Wokwi: https://wokwi.com/projects/466814814856110081

  Definition of struct tm:
  Member  Type Meaning                  Range
  tm_sec  int seconds after the minute  0-61*
  tm_min  int minutes after the hour    0-59
  tm_hour int hours since midnight      0-23
  tm_mday int day of the month          1-31
  tm_mon  int months since January      0-11
  tm_year int years since 1900
  tm_wday int days since Sunday         0-6
  tm_yday int days since January 1     0-365
  tm_isdst  int Daylight Saving Time flag
  (source: https://github.com/SensorsIot/NTP-time-for-ESP8266-and-ESP32/blob/master/NTP_Example/NTP_Example.ino)

  Simple Example how to synchronize the ESP32 time with a NTP Server

  2026/06/14
  ec2021

*/

#include <WiFi.h>

const char* ssid = "Wokwi-GUEST";
const char* password = "";

/** includes, constants and variables for NTP **/
#include "time.h"
const char* ntpServer = "pool.ntp.org";
const long  gmtOffset_sec = 3600 * 2;
const int   daylightOffset_sec = 3600 * 0;
struct tm timeinfo;
/**********************************************/

int lastSecond = -1;

void setup() {
  Serial.begin(115200);

  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);
  Serial.println("\nConnecting");

  while (WiFi.status() != WL_CONNECTED) {
    Serial.print(".");
    delay(100);
  }

  Serial.println("\nConnected to the WiFi network");
  Serial.print("Local ESP32 IP: ");
  Serial.println(WiFi.localIP());

  /**            Setup for NTP Server                    **/
  configTime(gmtOffset_sec, daylightOffset_sec, ntpServer);
  /********************************************************/
}


void loop() {
  if (getLocalTime(&timeinfo)) {
    if (timeinfo.tm_sec != lastSecond) {
      Serial.println(&timeinfo, "%A, %B %d %Y %H:%M:%S");
      lastSecond = timeinfo.tm_sec;
      if (WiFi.status() == WL_CONNECTED) WiFi.disconnect();
    }
  } else {
    Serial.println("Failed to obtain time");
    if (WiFi.status() != WL_CONNECTED) WiFi.reconnect();
  };
}