#include <NTPClient.h>
#include <WiFi.h>
#include <WiFiUdp.h>

const char* wifi_ssid = "Wokwi-GUEST";
const char* wifi_password = "";

WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP, "in.pool.ntp.org", -10800); // UTC offset for Argentina (3 hours later)

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);

  WiFi.begin(wifi_ssid, wifi_password);
  while ( WiFi.status() != WL_CONNECTED ) 
  {
    delay ( 500 );
    Serial.print ( "." );
  }
  Serial.println("Wifi Connected!");
  timeClient.begin();
  Serial.println("");
  Serial.println("Hello, ESP32!");
  timeClient.update();
}

void loop() {
  
  //Update NTP
  timeClient.update();

  //int  hours = timeClient.getHours();
  //String  minutes = String(timeClient.getMinutes());

  //Serial.println("Time: " + String(hours) + ":" + String(minutes));

  //Print Date/MM/Year
  printDate(timeClient.getEpochTime());

  //Print current time
  String time = (timeClient.getFormattedTime());
  Serial.println(time);

  String hour = time.substring(0, 2); //HH
  String minute = time.substring(3, 5); //MM

  String TimeStamp = hour + ":" + minute;

  //Serial.println("TimeStamp: "+ hour + ":"+minute);
  Serial.println("TimeStamp: "+ TimeStamp);
  
  delay(60000);

}

void printDate(unsigned long epochTime) {
  const char* months[] = {"01", "02", "03", "04", "05", "06", "07", "08", "09", "10", "11", "12"};
  
  time_t time = (time_t)epochTime;
  struct tm* tm_info = localtime(&time);
  
  String month = months[tm_info->tm_mon];
  int date  = tm_info->tm_mday;
  int year  = tm_info->tm_year + 1900;

  Serial.print(String(date)+"/"+ String(month)+"/"+String(year)+" - ");
}