#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 0
#define UTC_OFFSET_DST 0

void spinner(){
  static int8_t counter=0;
  const char* glyphs="\xa1\xa5\xdb";
  LCD.setCursor(15,1);
  LCD.print(glyphs[counter++]);
  if(counter==strlen(glyphs)){
    counter=0;
  }
}

void printLocalTime(){
  struct tm timeinfo;
  if(!getLocalTime(&timeinfo)) {
    LCD.setCursor(0,1);
    LCD.println("Connection Err");
    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("Connecting to");
  LCD.setCursor(0,1);
  LCD.print("WiFi");
  WiFi.begin("Wokwi-GUEST","",6);
  while(WiFi.status()!=WL_CONNECTED){
    delay(250);
    spinner();
  }

  Serial.println("");
  Serial.println("WiFi connected");
  Serial.print("IP address");
  Serial.println(WiFi.localIP());

  LCD.clear();
  LCD.setCursor(0,0);
  LCD.println("Online");
  LCD.setCursor(0,1);
  LCD.println("Updating time...");
  configTime(UTC_OFFSET,UTC_OFFSET_DST,NTP_SERVER);
}


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