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


const int buzzerPin = 27; 
const int ledPin = 26; 

RTC_DS1307 rtc;
LiquidCrystal_I2C lcd (0x27,28,4);

void setup () {
  Serial.begin(115200);
  lcd.init();
  lcd.backlight();
  pinMode(buzzerPin, OUTPUT);
  pinMode(ledPin, OUTPUT);

  if (! rtc.begin()) {
    Serial.println("Couldn't find RTC");
    Serial.flush();
    abort();
  }

  if (! rtc.isrunning()) {
    Serial.println("RTC is NOT running, let's set the time!");
    rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
  }
}

void loop() {
 DateTime time = rtc.now();
 lcd.setCursor(2,0);
 lcd.print(time.timestamp(DateTime::TIMESTAMP_DATE));
 lcd.setCursor(4,1);
 lcd.print(time.timestamp(DateTime::TIMESTAMP_TIME));
 checkAlarm(time);
 delay(500);
}

void checkAlarm(DateTime currentTime) {
  if (currentTime.hour() == 8 && currentTime.minute() == 0 && currentTime.second() == 0) {
    triggerAlarm();
  }
  if (currentTime.hour() == 10 && currentTime.minute() == 29 && currentTime.second() == 20) {
    triggerAlarm();
  }
  if (currentTime.hour() == 12 && currentTime.minute() == 44 && currentTime.second() == 0) {
    triggerAlarm();
  }
  if (currentTime.hour() == 15 && currentTime.minute() == 14 && currentTime.second() == 0) {
    triggerAlarm();
  }
  if (currentTime.hour() == 17 && currentTime.minute() == 49 && currentTime.second() == 0) {
    triggerAlarm();
  }
}

void triggerAlarm() {
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Alarm triggered!");
  tone(buzzerPin, 1000);
  digitalWrite(ledPin, HIGH);
  delay (1000);
  lcd.clear();
  digitalWrite(ledPin, LOW);
  noTone(buzzerPin);
}