#include <Arduino.h>

#define BUTTON 12
#define LED1 21
#define LED2 18

volatile bool buttonPressed = false;
volatile unsigned long buttonPressStartTime = 0;

unsigned long elapsedTime;

unsigned long lastPrintTime = 0;
bool x = false;
bool y = false;
bool estado = LOW;

void buttonInterrupt() {
  if (digitalRead(BUTTON) == HIGH) {
    buttonPressed = true;

    buttonPressStartTime = millis();
    
    
    
  } else {
    buttonPressed = false;
    
  }
}

void setup() {
  Serial.begin(115200);
  pinMode(LED1, OUTPUT);
  pinMode(LED2, OUTPUT);
  pinMode(BUTTON, INPUT);
  attachInterrupt(digitalPinToInterrupt(BUTTON), buttonInterrupt, CHANGE);
}

void loop() {
  if (buttonPressed) {
   elapsedTime = millis() - buttonPressStartTime;

    unsigned long currentTime = millis();
  if (currentTime - lastPrintTime >= 20){
    Serial.println(elapsedTime);
    lastPrintTime = currentTime;
  }

  } 

if (elapsedTime >= 20 && buttonPressed == LOW && y == false ){
   digitalWrite(LED1, HIGH);
  
    y = true;
    elapsedTime = 0;
  }

  if (elapsedTime >= 20 && elapsedTime < 1000 && buttonPressed == LOW && y == true){
   digitalWrite(LED1, LOW);
   
    y= false;
    elapsedTime = 0;
   
  }

  if (elapsedTime >= 3000 && buttonPressed == LOW && x == false ){
   digitalWrite(LED2, HIGH);
  
    x = true;
    elapsedTime = 0;
  }

  if (elapsedTime >= 3000 && buttonPressed == LOW && x == true){
   digitalWrite(LED2, LOW);
   
    x = false;
    elapsedTime = 0;
   
  }

}