const int botao = A0;
const int buzzer = A1;

unsigned long timer = 0;

#include <LiquidCrystal_I2C.h>
#include <LinkedList.h>
#include <StateMachine.h>

LiquidCrystal_I2C lcd(0x27,16,2);

StateMachine machine = StateMachine();

State* S1 = machine.addState(&state1);
State* S2 = machine.addState(&state2);
State* S3 = machine.addState(&state3);
State* S4 = machine.addState(&state4);

void setup() {
  Serial.begin(9600);

  DDRD = B11111100;
  DDRC = B10;

  lcd.begin(16,2);

  lcd.print("Grupo 4");

  S1->addTransition(&transitionS1S2,S2);
  S2->addTransition(&transitionS2S3,S3);
  S3->addTransition(&transitionS3S4,S4);
  S4->addTransition(&transitionS4S1,S1);
}

void loop() {
  unsigned long timer = millis();
  machine.run();
}

void state1(){
  PORTD = B110000;
}

void state2(){
  PORTD = B101000;
}

void state3(){
  PORTD = B1000100;
}

void state4(){
}

bool transitionS1S2(){
  if(millis() - timer >= 5000){
    timer = millis();
    lcd.clear();
    lcd.home();
    lcd.print("A:fechando");
    lcd.setCursor(0,1);
    lcd.print("P:fechado");
    return true;
  }
  else
    return false;
}

bool transitionS2S3(){
  if(millis() - timer >= 5000){
    timer = millis();
    lcd.clear();
    lcd.home();
    lcd.print("A:fechado");
    lcd.setCursor(0,1);
    lcd.print("P:aberto");
    return true;
  }
  else
    return false;
}

bool transitionS3S4(){
  if(digitalRead(botao) == HIGH)
    return true;
  else
    return false;
}

bool transitionS4S1(){
  if(millis() - timer >= 5000){
    timer = millis();
    lcd.clear();
    lcd.home();
    lcd.print("A:aberto");
    lcd.setCursor(0,1);
    lcd.print("P:fechado");
    return true;
  }
  else
    return false;
}