#include <PCD8544.h>
#include <Wire.h>
#include <RTClib.h>

static PCD8544 lcd;
RTC_DS3231 rtc;

const int buzzerPin = 9; // Connect buzzer to pin 9

// Define multiple alarms
const int numAlarms = 3;
const int alarmTimes[numAlarms][3] = {
  {8, 30, 0},  // Alarm 1: 8:30:00
  {9, 48, 0}, // Alarm 2: 9:48:00
  {18, 15, 0}  // Alarm 3: 18:15:00
};

void setup() {
  // Initialize LCD and RTC
  lcd.begin(84, 48);
  pinMode(buzzerPin, OUTPUT); // Set buzzer pin as output

  if (!rtc.begin()) {
    lcd.setCursor(0, 0);
    lcd.print("Couldn't find RTC");
    while (1);
  }

  if (rtc.lostPower()) {
    lcd.setCursor(0, 0);
    lcd.print("RTC lost power");
    rtc.adjust(DateTime(F(__DATE__), F(__TIME__))); // Set the time to compile time
  }
}

void loop() {
  DateTime now = rtc.now();

  // Clear screen and update time display
  lcd.clear();
  lcd.setCursor(3, 2);
  lcd.print(now.hour(), DEC);
  lcd.print(':');
  lcd.print(now.minute(), DEC);
  lcd.print(':');
  lcd.print(now.second(), DEC);

  // Check if the current time matches any alarm
  for (int i = 0; i < numAlarms; i++) {
    if (now.hour() == alarmTimes[i][0] && now.minute() == alarmTimes[i][1] && now.second() == alarmTimes[i][2]) {
      lcd.setCursor(3, 4);
      lcd.print("ALARM!");
      tone(buzzerPin, 1000); // Play sound at 1000Hz
      delay(1000); // Sound duration
      noTone(buzzerPin); // Stop sound
      break; // Stop checking once an alarm matches
    }
  }

  delay(1000); // Update every second
}