// Button pins
const int RECORDBUTTON = 6;
const int STOPBUTTON = 7;
const int CLEARBUTTON = 8;
const int MODEBUTTON = 9;
const int TRACK1BUTTON = 10;
const int TRACK2BUTTON = 11;
const int TRACK3BUTTON = 12;
const int TRACK4BUTTON = 13;

// LED pins
const int redPin1 = 22;
const int greenPin1 = 23;
const int redPin2 = 24;
const int greenPin2 = 25;
const int redPin3 = 26;
const int greenPin3 = 27;
const int redPin4 = 28;
const int greenPin4 = 29;

int buttonState = 0;

void setup() {
  //setup pin modes
  pinMode(RECORDBUTTON, INPUT_PULLUP);
  pinMode(STOPBUTTON, INPUT_PULLUP);
  pinMode(CLEARBUTTON, INPUT_PULLUP);
  pinMode(MODEBUTTON, INPUT_PULLUP);
  pinMode(TRACK1BUTTON, INPUT_PULLUP);
  pinMode(TRACK2BUTTON, INPUT_PULLUP);
  pinMode(TRACK3BUTTON, INPUT_PULLUP);
  pinMode(TRACK4BUTTON, INPUT_PULLUP);

  pinMode(redPin1, OUTPUT);
  pinMode(greenPin1, OUTPUT);
  pinMode(redPin2, OUTPUT);
  pinMode(greenPin2, OUTPUT);
  pinMode(redPin3, OUTPUT);
  pinMode(greenPin3, OUTPUT);
  pinMode(redPin4, OUTPUT);
  pinMode(greenPin4, OUTPUT);


}

void loop() {
  // Programming MODE BUTTON
  buttonState = digitalRead(MODEBUTTON);
  if (buttonState == HIGH) {
    // Turn LED GREEN:
    digitalWrite(greenPin1, HIGH);
    digitalWrite(greenPin2, HIGH);
    digitalWrite(greenPin3, HIGH);
    digitalWrite(greenPin4, HIGH);
  } else {
    // TURN LED RED:
    digitalWrite(greenPin1, LOW);
    digitalWrite(greenPin2, LOW);
    digitalWrite(greenPin3, LOW);
    digitalWrite(greenPin4, LOW);
    digitalWrite(redPin1, HIGH);
  }

  // Programming TRACK BUTTONS IN RECORD MODE
  buttonState = digitalRead(TRACK1BUTTON);
  if (buttonState == HIGH) {
    // SELECT TRACK1, LED RED
    digitalWrite(redPin1, HIGH);
  } else {
    // TURN LED OFF
    digitalWrite(redPin1, LOW);
  }
  buttonState = digitalRead(TRACK2BUTTON);
  if (buttonState == HIGH) {
    // SELECT TRACK 2, LED RED:
    digitalWrite(redPin2, HIGH);
  } else {
    //
  }
  // TURN LED OFF
  digitalWrite(redPin2, LOW);
}