#include <WiFi.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <time.h>

LiquidCrystal_I2C LCD(0x27, 16, 2);  

const char* ssid     = "Wokwi-GUEST";
const char* password = "";  
const char* ntpServer = "pool.ntp.org";
const long  gmtOffset_sec = 3 * 3600;    
const int   daylightOffset_sec = 0;

void setup() {
  Serial.begin(115200);
  LCD.init();
  LCD.backlight();

  LCD.setCursor(0, 0);
  LCD.print("welcome to...");

  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    LCD.print(".");
  }

  LCD.clear();
  LCD.setCursor(0, 0);
  LCD.print("WiFi Connected");

  configTime(gmtOffset_sec, daylightOffset_sec, ntpServer);
}

void loop() {
  struct tm timeinfo;
  if (!getLocalTime(&timeinfo)) {
    LCD.setCursor(0, 0);
    LCD.print("Time Error");
    return;
  }

  char timeStr[16];
  strftime(timeStr, sizeof(timeStr), "%I:%M:%S %p", &timeinfo);

  char dateStr[16];
  strftime(dateStr, sizeof(dateStr), "%a %d/%m/%Y", &timeinfo);

  LCD.setCursor(0, 0);
  LCD.print(timeStr);
  LCD.setCursor(0, 1);
  LCD.print(dateStr);

  delay(1000);  
}