const int LED_R = 10;
const int LED_G = 9;
const int LED_B = 8;
const int BTN_1 = 2;
const int BTN_2 = 3;
const int POT = A0;

volatile bool isModeOne = false;
volatile bool isModeTwo = false;

void setup() {
  Serial.begin(9600);
  pinMode(LED_R, OUTPUT);
  pinMode(LED_G, OUTPUT);
  pinMode(LED_B, OUTPUT);
  pinMode(BTN_1, INPUT_PULLUP);
  pinMode(BTN_2, INPUT_PULLUP);
  attachInterrupt(digitalPinToInterrupt(BTN_1), switchToModeOne, FALLING);
  attachInterrupt(digitalPinToInterrupt(BTN_2), switchToModeTwo, FALLING);
}

void loop() {
  if (isModeOne) {
    Serial.println("Mode One Active");
    modeOne();
  } else if (isModeTwo) {
    Serial.println("Mode Two Active");
    modeTwo();
  } else {
    Serial.println("No Mode Active. All LEDs OFF.");
    setLeds(LOW, LOW, LOW);
  }
  delay(500);
}

void switchToModeOne() {
  isModeOne = true;
  isModeTwo = false;
  Serial.println("Switched to Mode One");
}

void switchToModeTwo() {
  isModeTwo = true;
  isModeOne = false;
  Serial.println("Switched to Mode Two");
}

void modeOne() {
  int val = analogRead(POT);
  Serial.print("Mode One: Potentiometer Value = ");
  Serial.println(val);

  if (val < 100) {
    Serial.println("LEDs OFF");
    setLeds(LOW, LOW, LOW);
  } else if (val < 340) {
    Serial.println("Red LED Blinking");
    blink(LED_R);
  } else if (val < 680) {
    Serial.println("Red & Green LEDs Blinking");
    blink(LED_R);
    blink(LED_G);
  } else {
    Serial.println("Red, Green & Blue LEDs Blinking");
    blink(LED_R);
    blink(LED_G);
    blink(LED_B);
  }
}

void modeTwo() {
  int val = analogRead(POT);
  int level = map(val, 0, 1023, 0, 7);

  Serial.print("Mode Two: Potentiometer Mapped Value = ");
  Serial.println(level);

  bool r = bitRead(level, 0);
  bool g = bitRead(level, 1);
  bool b = bitRead(level, 2);

  setLeds(r, g, b);

  Serial.print("LED Status: R=");
  Serial.print(r);
  Serial.print(" G=");
  Serial.print(g);
  Serial.print(" B=");
  Serial.println(b);
}

void setLeds(bool r, bool g, bool b) {
  digitalWrite(LED_R, r);
  digitalWrite(LED_G, g);
  digitalWrite(LED_B, b);
}

void blink(int pin) {
  digitalWrite(pin, HIGH);
  delay(1000);
  digitalWrite(pin, LOW);
  delay(1000);
}