#include <InputDebounce.h>
#include <Bounce2.h>
#include <Servo.h>

int buttonA = 51;
int buttonB = 52;
int buttonC = 53;
int buttonD = 30;
int fase0 = 22;
int fase1 = 23;
int fase2 = 24;
int fase3 = 25;
int rele1 = 26;
int rele2 = 27;
int rele3 = 28;
int rele4 = 29;
int tempo = 10;
int lettura = analogRead(A0);
Servo myservo;

void setup()
{
  myservo.attach(31);
  Serial.begin(9600);
  pinMode(buttonA, INPUT);
  pinMode(buttonB, INPUT);
  pinMode(buttonC, INPUT);
  pinMode(buttonD, INPUT);
  pinMode(fase0, OUTPUT);
  pinMode(fase1, OUTPUT);
  pinMode(fase2, OUTPUT);
  pinMode(fase3, OUTPUT);
  pinMode(rele2, OUTPUT);
  pinMode(rele3, OUTPUT);
  pinMode(rele4, OUTPUT);
  pinMode(rele1, OUTPUT);
}

void loop()
{

int variabile=0;
int soglia=250;
int bevanda;

int a;
int b;
int c;

digitalWrite(rele1, HIGH);
digitalWrite(rele4, HIGH);
digitalWrite(rele3, HIGH);
digitalWrite(rele2, HIGH);


bevanda=rele1;

if(digitalRead(buttonA)==HIGH)
{
  a = variabile=1;
  a = bevanda=rele2;
  }

if(digitalRead(buttonB)==HIGH)
{
a = variabile=1;
  a = bevanda=rele3;
}

if(digitalRead(buttonC)==HIGH)
{
  a = variabile=1;
  a = bevanda=rele4;
}

if(digitalRead(buttonD)==HIGH)
{
  variabile=2;
 a;
}

Serial.println(variabile);
Serial.println(bevanda);

 switch(variabile){

  case 1:
  while(digitalRead(buttonD)==LOW)
  {
    digitalWrite(fase0, HIGH);
    digitalWrite(fase3, LOW);
    delay(tempo);
    digitalWrite(fase0, LOW);
    digitalWrite(fase1, HIGH);
    delay(tempo);
    digitalWrite(fase1, LOW);
    digitalWrite(fase2, HIGH);
    delay(tempo);
    digitalWrite(fase2, LOW);
    digitalWrite(fase3, HIGH);
    delay(tempo);
  }
  break;

  case 2:
  myservo.write(180);

  while(lettura < soglia)
  {
  digitalWrite(rele1, LOW);
  digitalWrite(bevanda, LOW);
  Serial.println("versamento bevanda");
  }
  if(lettura > soglia){variabile=3;}
  break ;

  case 3:
  myservo.write(0);
  if(myservo.read()==0){variabile=4;}
  break ;

  case 4:
  while(digitalRead(buttonD)==LOW)
  {
    digitalWrite(fase3, HIGH);
    digitalWrite(fase0, LOW);
    delay(tempo);
    digitalWrite(fase3, LOW);
    digitalWrite(fase2, HIGH);
    delay(tempo);
    digitalWrite(fase2, LOW);
    digitalWrite(fase1, HIGH);
    delay(tempo);
    digitalWrite(fase1, LOW);
    digitalWrite(fase0, HIGH);
    delay(tempo);
  }
  break ;

 }

}