// PinMode
int _PinMode_LED[] = {2, 3, 4, 5, 6};
int _PinMode_Buttons[] = {7, 8};
// Integer used in Loops
int i;
// Length of PinMode Arrays
int Length_PinMode_LED;
int Length_PinMode_Buttons;
// Button states
int ButtonState1 = LOW;
int ButtonState2 = LOW;
bool Pattern1 = false;
bool Pattern2 = false;
// Managing the debounce
int LastButtonState1 = LOW;
int LastButtonState2 = LOW;
unsigned long LastDebounceTime1 = 0;
unsigned long LastDebounceTime2 = 0;
unsigned long DebounceDelay = 50; 
int reading1;
int reading2;

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

  Length_PinMode_LED = sizeof(_PinMode_LED) / sizeof(_PinMode_LED[0]);
  Serial.println(Length_PinMode_LED);

  Length_PinMode_Buttons = sizeof(_PinMode_Buttons) / sizeof(_PinMode_Buttons[0]);
  Serial.println(Length_PinMode_Buttons);

  for (int i = 0; i < Length_PinMode_LED; i++) {
    pinMode(_PinMode_LED[i], OUTPUT);
  }

  for (int i = 0; i < Length_PinMode_Buttons; i++) {
    pinMode(_PinMode_Buttons[i], INPUT);
  }
}

void loop() {
  // checking the state of the buttons
  reading1 = digitalRead(_PinMode_Buttons[0]);
  reading2 = digitalRead(_PinMode_Buttons[1]);

  // Debouncing button 1
  if (reading1 != LastButtonState1) {
    LastDebounceTime1 = millis(); 
  }
  if ((millis() - LastDebounceTime1) > DebounceDelay) {
    if (reading1 != ButtonState1) {
      ButtonState1 = reading1;  
      if (ButtonState1 == HIGH) {
        Pattern1 = true;   
        Pattern2 = false;  
      }
    }
  }

  // Debouncing button 2
  if (reading2 != LastButtonState2) {
    LastDebounceTime2 = millis(); 
  }
  if ((millis() - LastDebounceTime2) > DebounceDelay) {
    if (reading2 != ButtonState2) {
      ButtonState2 = reading2;  
      if (ButtonState2 == HIGH) {
        Pattern2 = true;   
        Pattern1 = false;  
      }
    }
  }

  LastButtonState1 = reading1;  
  LastButtonState2 = reading2;

 if (Pattern1) {
    CloseLights();  
    Example1();
  } else if (Pattern2) {
    CloseLights();
    delay(500);
    Example2();
  } else {
    CloseLights(); }
}

void Example1() {
  for (int i = 0; i < Length_PinMode_LED; i++) {
    digitalWrite(_PinMode_LED[i], HIGH);
    delay(500);
    if (i == Length_PinMode_LED - 1) {
      for (int x = 0; x <= Length_PinMode_LED; x++) {
        digitalWrite(_PinMode_LED[abs(x - Length_PinMode_LED)], LOW);
        delay(500);
      }
    }
  }
}

void Example2() {
  for (int i = 0; i < Length_PinMode_LED; i++) {
    digitalWrite(_PinMode_LED[i], HIGH);
  }
  delay(500);
  for (int i = 0; i < Length_PinMode_LED; i++) {
    digitalWrite(_PinMode_LED[i], LOW);
  }
}

void CloseLights() {
  for (int i = 0; i < Length_PinMode_LED; i++) {
    digitalWrite(_PinMode_LED[i], LOW);
  }
}