// Breno Correia Lociks
// Exercício 3

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

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

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

void printLocalTime() {
  struct tm timeinfo;

  if (!getLocalTime(&timeinfo)) {
    LCD.setCursor(0, 1);
    LCD.println("Erro conexao! " ) ;
    return;
  }

  LCD.setCursor(8, 0);
  LCD.println(&timeinfo, "%H:%M:%S");
  LCD.setCursor(0, 1);
  LCD.println(&timeinfo, "%d/%m/%Y %Z"); 
}

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(250);
  }

  Serial.println("");
  Serial.println("WiFi conectado!");
  Serial.print("Endereco IP: ");
  Serial.println(WiFi.localIP());
  
  LCD.clear();
  LCD.setCursor(0, 0);
  LCD.println("Online");
  LCD.setCursor(0, 1);
  LCD.println("Atualizando...");

  configTime(UTC_OFFSET, UTC_OFFSET_DST, NTP_SERVER);
}

void loop() {
  printLocalTime();
  delay(250); 
}