const int switchPin = 2;              // switch is connected to pin 2
const int led1Pin = 12;
const int led2Pin = 11;
const int led3Pin = 10;
const int led4Pin = 9;
const int led5Pin = 8;

int val;                        // variable for reading the pin status
int val2;                       // variable for reading the delayed status
int buttonState;                // variable to hold the button state

unsigned long previousMillis = 0;  // will store last time LED was updated
const long interval = 50;  // interval at which to blink (milliseconds)
const long interval2 = 500;

int lightMode = 0;              // What mode is the light in?

void setup() {
  pinMode(switchPin, INPUT);    // Set the switch pin as input
  for (int i=8; i<=12; i++){     // Set the leds pin as output
    pinMode(i, OUTPUT);
  }
    
  Serial.begin(9600);           // Set up serial communication at 9600bps
  buttonState = digitalRead(switchPin);   // read the initial state

 // attachInterrupt(digitalPinToInterrupt(switchPin), LightMode, CHANGE);
}

void LightMode(){
  unsigned long currentMillis = millis();

  if (currentMillis - previousMillis >= interval){
  val = digitalRead(switchPin);           // read input value and store it in val
  //Serial.println("Previo");
  //Serial.print(previousMillis);
  

  if (currentMillis - previousMillis >= interval2) {
    //previousMillis = currentMillis;
    val2 = digitalRead(switchPin);     // read the input again to check for bounces
    if (val == val2) {                 // make sure we got 2 consistant readings!
    if (val != buttonState) {          // the button state has changed!
      if (val == LOW) {                // check if the button is pressed
        if (lightMode <= 3) {          // light is off
            lightMode+= 1;               // implement the lightmode sequence
      } else {
        lightMode = 0;
      }
    }
    buttonState = val;                 // save the new state in our variable
  }
 }
}
} 
}

void loop(){
  // Now do whatever the lightMode indicates
  int i,j;
  
  LightMode();
  Serial.print(lightMode);

  unsigned long currentMillis = millis();

if (lightMode == 0) {
      for (i=8; i<=12; i++){
        digitalWrite(i, LOW);
      }
  }

  if (lightMode == 1) {
    for (i=8; i<=12; i++){
        digitalWrite(i, HIGH);
        //delay(interval);
   }
  }

  if (lightMode == 2) {
    for (i=8; i<=12; i++){
        digitalWrite(i, HIGH);}
   Serial.print("valor i ");
    Serial.print(i);
    
    // delay(200);
    if (currentMillis - previousMillis >= interval2){
    for (j=8; j<=12; j++){
        digitalWrite(j, LOW);
    }
    delay(interval);
    }
    }

    
  

  if (lightMode == 3) {
   for (i=8; i<=12; i++){
      digitalWrite(i, HIGH);
      delay(200);
      digitalWrite(i, LOW);
    }
  }

  if (lightMode == 4) {
   for (i=8; i<=12; i++){
      digitalWrite(i, HIGH);
      delay(200);
   }
   for (i=12; i>=8; i--){
      digitalWrite(i, LOW);
      delay(200);
    }
  }
}
  // If lightmode is 0, we dont have to do anything because the LEDs are already off!