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

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

// NTP Client setup
WiFiUDP ntpUDP;
NTPClient timeClient(ntpUDP, "pool.ntp.org", 25200, 3600000); // UTC, update every hour

unsigned long lastNTPSync = 0;
unsigned long messageCount = 0;

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

  // Initialize NTP Client
  timeClient.begin();
  timeClient.update();
}

void loop() {
  // Sync time every hour
  if (millis() - lastNTPSync >= 3600000) {
    timeClient.update();
    lastNTPSync = millis();
    Serial.println("NTP time synced");
  }

  // Send serial message every second
  static unsigned long lastMessage = 0;
  if (millis() - lastMessage >= 1000) {
    // Get current time
    time_t epochTime = timeClient.getEpochTime();
    struct tm *ptm = gmtime(&epochTime);

    // Format message with current time and message count
    char message[100];
    snprintf(message, sizeof(message), 
      "Message %lu: %02d:%02d:%02d %02d/%02d/%04d", 
      messageCount++, 
      ptm->tm_hour, ptm->tm_min, ptm->tm_sec,
      ptm->tm_mday, ptm->tm_mon + 1, ptm->tm_year + 1900
    );
    
    Serial.println(message);
    lastMessage = millis();
  }
  delay(100);
}

//slow af