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

RTC_DS1307 rtc;

const int ledPin = 7;
const int buzzerPin = 8;
const int buttonPin = 2;

// Reminder time: 10:05 AM
const int reminderHour = 11;
const int reminderMinute = 25;

bool reminderActive = false;
bool medicineTakenToday = false;

void setup() {
  Serial.begin(9600);
  pinMode(ledPin, OUTPUT);
  pinMode(buzzerPin, OUTPUT);
  pinMode(buttonPin, INPUT_PULLUP);  // Internal pull-up resistor
  digitalWrite(ledPin, LOW);
  noTone(buzzerPin);
  if (!rtc.begin()) {
    Serial.println("RTC not found!");
    while (1);
  }
  Serial.println("Smart Pill Reminder Started");
}

void loop() {
  DateTime now = rtc.now();
  Serial.print(now.hour()); Serial.print(":");
  Serial.print(now.minute()); Serial.print(":");
  Serial.println(now.second());

  // Trigger reminder at set time
  if (now.hour() == reminderHour && now.minute() == reminderMinute
&& !medicineTakenToday) {
    reminderActive = true;
  }

  // Alert state
  if (reminderActive) {
    digitalWrite(ledPin, HIGH);
    tone(buzzerPin, 1000);
    if (digitalRead(buttonPin) == LOW) {    // Button pressed
      Serial.println("Medicine Taken!");
      digitalWrite(ledPin, LOW);
      noTone(buzzerPin);
      reminderActive = false;
      medicineTakenToday = true;
      while (digitalRead(buttonPin) == LOW) { delay(10); }
    }
  }

  // Reset at midnight for next day
  if (now.hour() == 0 && now.minute() == 0 && now.second() == 0) {
    medicineTakenToday = false;
    Serial.println("Daily reminder reset.");
  }
  delay(1000);
}