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

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

WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP, "pool.ntp.org");

unsigned long lastUpdate = 0;

void setup() {
  Serial.begin(115200);
  
  // Connect to WiFi
  WiFi.begin(ssid, password);
  Serial.print("Connecting to WiFi");
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("\nWiFi connected");

  // Initialize NTP Client
  timeClient.begin();
  timeClient.setTimeOffset(0); // GMT offset in seconds
  
  // Wait for the time to be updated
  while (!timeClient.update()) {
    timeClient.forceUpdate();
  }
  
  // Print GMT time
  Serial.print("GMT time: ");
  Serial.println(timeClient.getFormattedTime());
  
  // Print Epoch time
  Serial.print("Epoch time: ");
  Serial.println(timeClient.getEpochTime());

  lastUpdate = millis();
}

void loop() {
  // Update time every 2 minutes
  if (millis() - lastUpdate > 120000) {
    if (timeClient.update()) {
      Serial.print("GMT time: ");
      Serial.println(timeClient.getFormattedTime());
      Serial.print("Epoch time: ");
      Serial.println(timeClient.getEpochTime());
      lastUpdate = millis();
    }
  }
  delay(1000);
}


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

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

// WiFiUDP ntpUDP;
// NTPClient timeClient(ntpUDP, "pool.ntp.org");

// unsigned long lastUpdate = 0;

// void setup() {
//   Serial.begin(115200);
  
//   // Connect to WiFi
//   WiFi.begin(ssid, password);
//   Serial.print("Connecting to WiFi");
//   while (WiFi.status() != WL_CONNECTED) {
//     delay(500);
//     Serial.print(".");
//   }
//   Serial.println("\nWiFi connected");

//   // Initialize NTP Client
//   timeClient.begin();
//   timeClient.setTimeOffset(25200); // 7 * 60 * 60 (GMT+7 offset in seconds)
  
//   // Wait for the time to be updated
//   while (!timeClient.update()) {
//     timeClient.forceUpdate();
//   }
  
//   // Print Jakarta time (GMT+7)
//   Serial.print("Jakarta time (GMT+7): ");
//   Serial.println(timeClient.getFormattedTime());
  
//   // Print Epoch time
//   Serial.print("Epoch time: ");
//   Serial.println(timeClient.getEpochTime());

//   lastUpdate = millis();
// }

// void loop() {
//   // Update time every 2 minutes
//   if (millis() - lastUpdate > 120000) {
//     if (timeClient.update()) {
//       Serial.print("Jakarta time (GMT+7): ");
//       Serial.println(timeClient.getFormattedTime());
//       Serial.print("Epoch time: ");
//       Serial.println(timeClient.getEpochTime() + 25200); // Add offset
//       lastUpdate = millis();
//     }
//   }
//   delay(1000);
// }