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

RTC_DS3231 rtc;
Servo servo1;
Servo servo2;
LiquidCrystal_I2C lcd(0x27, 20, 4);  // Dirección I2C y tamaño del LCD (20 columnas x 4 filas)

const int buttonPin1 = 2;
const int buttonPin2 = 3;
const int buttonPin3 = 4;
const int buzzerPin = 10;
const int proximitySensorPin = A0;

int breakfastHour = 8;
int breakfastMinute = 46;
int lunchHour = 12;
int lunchMinute = 0;
int dinnerHour = 15;
int dinnerMinute = 2;

bool breakfastDispensed = false;
bool lunchDispensed = false;
bool dinnerDispensed = false;

bool isProximityDetected = false;

unsigned long dispensingStartTime = 0;
const unsigned long dispensingDuration = 4000; // 4 segundos

void setup() {
  Serial.begin(9600);
  rtc.begin();
  servo1.attach(9);
  servo2.attach(10);
  lcd.begin(20, 4);  // Inicializar el LCD con 20 columnas y 4 filas
  lcd.backlight();

  pinMode(buttonPin1, INPUT_PULLUP);
  pinMode(buttonPin2, INPUT_PULLUP);
  pinMode(buttonPin3, INPUT_PULLUP);
  pinMode(buzzerPin, OUTPUT);
  pinMode(proximitySensorPin, INPUT);
}

void loop() {
  DateTime now = rtc.now();
  int currentHour = now.hour();
  int currentMinute = now.minute();

  int buttonState1 = digitalRead(buttonPin1);
  int buttonState2 = digitalRead(buttonPin2);
  int buttonState3 = digitalRead(buttonPin3);

  if (buttonState1 == LOW) {
    breakfastMinute++;
    if (breakfastMinute >= 60) {
      breakfastMinute = 0;
    }
    delay(300);
  }

  if (buttonState2 == LOW) {
    lunchMinute++;
    if (lunchMinute >= 60) {
      lunchMinute = 0;
    }
    delay(300);
  }

  if (buttonState3 == LOW) {
    dinnerMinute++;
    if (dinnerMinute >= 60) {
      dinnerMinute = 0;
    }
    delay(300);
  }

  // Ajustar los minutos para que no excedan 60
  breakfastMinute = breakfastMinute % 60;
  lunchMinute = lunchMinute % 60;
  dinnerMinute = dinnerMinute % 60;

  if (currentHour == breakfastHour && currentMinute == breakfastMinute && !breakfastDispensed) {
    if (millis() - dispensingStartTime >= dispensingDuration) {
      if (!isProximityDetected && !isPetDetected()) {
        dispenseFood(servo1);
        playSound();
        breakfastDispensed = true;
        dispensingStartTime = millis();
      }
    }
  } else if (currentHour != breakfastHour) {
    breakfastDispensed = false;
  }

  if (currentHour == lunchHour && currentMinute == lunchMinute && !lunchDispensed) {
    if (millis() - dispensingStartTime >= dispensingDuration) {
      if (!isProximityDetected && !isPetDetected()) {
        dispenseFood(servo1);
        playSound();
        lunchDispensed = true;
        dispensingStartTime = millis();
      }
    }
  } else if (currentHour != lunchHour) {
    lunchDispensed = false;
  }

  if (currentHour == dinnerHour && currentMinute == dinnerMinute && !dinnerDispensed) {
    if (millis() - dispensingStartTime >= dispensingDuration) {
      if (!isProximityDetected && !isPetDetected()) {
        dispenseFood(servo1);
        playSound();
        dinnerDispensed = true;
        dispensingStartTime = millis();
      }
    }
  } else if (currentHour != dinnerHour) {
    dinnerDispensed = false;
  }

  isProximityDetected = digitalRead(proximitySensorPin);
  if (isProximityDetected) {
    // Activar el segundo servomotor cuando se detecte la proximidad
    servo2.write(0);
  } else {
    // Desactivar el segundo servomotor cuando no se detecte la proximidad
    servo2.write(90);
  }

  updateLCD();
}

void dispenseFood(Servo servo) {
  int openPosition = 0;
  int closePosition = 90;

  servo.write(openPosition);
  delay(2000);
  servo.write(closePosition);
  delay(2000);
}

void playSound() {
  tone(buzzerPin, 1000, 200); // Cambia la frecuencia y la duración del sonido según tus necesidades
  delay(200);
  noTone(buzzerPin);
}

bool isPetDetected() {
  int sensorValue = analogRead(proximitySensorPin);
  return (sensorValue < 100); // Ajusta este valor según la sensibilidad del sensor y la distancia a la que deseas detectar la presencia de una mascota
}

void updateLCD() {
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Comidas:");

  lcd.setCursor(0, 1);
  lcd.print("Desayuno: " + String(breakfastHour) + ":" + String(breakfastMinute));

  lcd.setCursor(0, 2);
  lcd.print("Almuerzo: " + String(lunchHour) + ":" + String(lunchMinute));

  lcd.setCursor(0, 3);
  lcd.print("Cena: " + String(dinnerHour) + ":" + String(dinnerMinute));
}