#include <RTClib.h>
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 20, 4);
RTC_DS1307 rtc;
String text1 = "17:00:00";

int notes[] = {392, 311, 466, 369, 622};
int times[] = {100, 700, 600, 300, 200};


void setup() {
  Serial.begin(9600);
  Serial.println("17:00:00");
  lcd.init();
  lcd.backlight();
  pinMode(8, OUTPUT);
  if (!rtc.begin())
  {
    while(1);
  }
}

void loop() {
  DateTime now = rtc.now();
  String year, month, day, hour, minute, second;
  year = now.year();
  month = now.month();
  day = now.day();
  hour = now.hour();
  minute = now.minute();
  second = now.second();

  String time = "Time: " + hour + ":" + minute + ":" + second;
  String timealarm = hour + ":" + minute + ":" + second;
  String date = "Date: " + day + "." + month + "." + year;

  lcd.setCursor(0, 0);
  lcd.print(time);
  lcd.setCursor(0, 1);
  lcd.print(date);
  lcd.setCursor(0, 3);
  lcd.print("Created by Yaroslav");

  if (Serial.available())
  {
    String text = Serial.readString();
    Serial.println(text);
    text1 = text;
    Serial.println(text1);
  }

  if (text1 == timealarm)
  {
    for (int i = 0; i < 5; i++)
    {
      tone(8, notes[i], times[i]);
      delay(times[i]);
      noTone(8);
    }
  }
  delay(1000);
  lcd.clear();
}