const int RED_LED = 13;
const int GREEN_LED = 12;
const int BLUE_LED = 11;
const int BUTTON_ONE = 2;
const int BUTTON_TWO = 3;
const int POTENTIOMETER = A0;

volatile bool modeOneActive = false;
volatile bool modeTwoActive = false;

void setup() {
  pinMode(RED_LED, OUTPUT);
  pinMode(GREEN_LED, OUTPUT);
  pinMode(BLUE_LED, OUTPUT);
  pinMode(BUTTON_ONE, INPUT_PULLUP);
  pinMode(BUTTON_TWO, INPUT_PULLUP);
  
  attachInterrupt(digitalPinToInterrupt(BUTTON_ONE), activateModeOne, FALLING);
  attachInterrupt(digitalPinToInterrupt(BUTTON_TWO), activateModeTwo, FALLING);
  
  Serial.begin(9600);
}

void loop() {
  if (modeOneActive) {
    handleModeOne();
  } else if (modeTwoActive) {
    handleModeTwo();
  } else {
    turnOffLEDs();
    Serial.println("No Mode Active");
  }
  delay(500);
}

void activateModeOne() {
  modeOneActive = true;
  modeTwoActive = false;
}

void activateModeTwo() {
  modeTwoActive = true;
  modeOneActive = false;
}

void handleModeOne() {
  int potValue = analogRead(POTENTIOMETER);
  Serial.print("Mode One - Pot Value: ");
  Serial.println(potValue);

  if (potValue < 100) {
    turnOffLEDs();
  } else if (potValue < 340) {
    blinkLED(RED_LED);
  } else if (potValue < 680) {
    blinkLED(RED_LED);
    blinkLED(GREEN_LED);
  } else {
    blinkLED(RED_LED);
    blinkLED(GREEN_LED);
    blinkLED(BLUE_LED);
  }
}

void handleModeTwo() {
  int potValue = analogRead(POTENTIOMETER);
  int level = map(potValue, 0, 1023, 0, 7);
  
  digitalWrite(RED_LED, bitRead(level, 0));
  digitalWrite(GREEN_LED, bitRead(level, 1));
  digitalWrite(BLUE_LED, bitRead(level, 2));
  
  Serial.print("Mode Two - LEDs: R=");
  Serial.print(bitRead(level, 0));
  Serial.print(" G=");
  Serial.print(bitRead(level, 1));
  Serial.print(" B=");
  Serial.println(bitRead(level, 2));
}

void blinkLED(int led) {
  digitalWrite(led, HIGH);
  delay(500);
  digitalWrite(led, LOW);
  delay(500);
}

void turnOffLEDs() {
  digitalWrite(RED_LED, LOW);
  digitalWrite(GREEN_LED, LOW);
  digitalWrite(BLUE_LED, LOW);
}