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

LiquidCrystal_I2C LCD=LiquidCrystal_I2C(0x27,16,2);

#define NTP_SERVER "pool.ntp.org"
#define UTC_OFFSET -10800
#define UTC_OFFSET_DST 0

void printLocalTime() {
  struct tm timeinfo;
  if (!getLocalTime(&timeinfo)) {
    LCD.setCursor(0, 1);
    LCD.print("Erro conexao!");
    return;
  }
  LCD.setCursor(8, 0);
  LCD.print(&timeinfo, "%H:%M:%S");
  LCD.setCursor(0, 1);
  LCD.print(&timeinfo, "%d/%m/%Y     ");
}

void setup() {
  Serial.begin(115200); 
  LCD.init();
  LCD.backlight();
  LCD.setCursor(0, 0);
  LCD.print("Conectando... ");
  LCD.setCursor(0, 1);
  LCD.print("WiFi ");

  WiFi.begin("Wokwi-GUEST", "", 6);
  while (WiFi.status() != WL_CONNECTED) { 
    delay(100); 
    Serial.print("."); 
  }
  Serial.println("Conectado!");
  Serial.print("Endereco IP: ");
  Serial.println(WiFi.localIP());

  LCD.clear();
  LCD.setCursor(0, 0);
  LCD.print("Online");
  LCD.setCursor(0, 1);
  LCD.print("Atualizando...");

  configTime(UTC_OFFSET, UTC_OFFSET_DST, NTP_SERVER);
} 

void loop() { 
  printLocalTime();
  delay(500);
}