#define colorBtn 6
#define durationBtn 7

#define RED_PIN 13
#define GREEN_PIN 12
#define BLUE_PIN 11

bool colors[][3] = { 
  {1,1,1}, {1,0,0}, {0,1,0}, {0,0,1}, // wrgb
  {0,1,1}, {1,1,0}, {1,0,1}, {0,0,0}  // cymk
};

char* colorNames[] = { 
  "white", "red", "green", "blue",
  "cyan", "yellow", "magenta", "black" // black is just off so do not need to toggle to black
};

int delays[] = { 1000, 800, 600, 400, 200 };

volatile int currentColor = 0;
volatile int currentDelay = 0;
volatile bool colorBtnPressed = false;
volatile bool durationBtnPressed = false;

unsigned long lastToggleTime = 0;
bool ledState = false;

void setup() {
  Serial.begin(9600);
  
  pinMode(RED_PIN, OUTPUT);
  pinMode(GREEN_PIN, OUTPUT);
  pinMode(BLUE_PIN, OUTPUT);
  
  pinMode(colorBtn, INPUT_PULLUP);
  pinMode(durationBtn, INPUT_PULLUP);
  
  attachInterrupt(digitalPinToInterrupt(colorBtn), colorBtnISR, FALLING);
  attachInterrupt(digitalPinToInterrupt(durationBtn), durationBtnISR, FALLING);
  
  Serial.println("RGB LED Controller initialized");
  Serial.println("Color: white");
  Serial.println("Duration: 1000 ms");
}

void loop() {
  if (colorBtnPressed) {
    handleColorChange();
  }
  
  if (durationBtnPressed) {
    handleDurationChange();
  }
  
  toggleLED();
}

void colorBtnISR() {
  static unsigned long lastInterruptTime = 0;
  unsigned long interruptTime = millis();
  
  if (interruptTime - lastInterruptTime > 200) {
    colorBtnPressed = true;
    lastInterruptTime = interruptTime;
  }
}

void durationBtnISR() {
  static unsigned long lastInterruptTime = 0;
  unsigned long interruptTime = millis();
  
  if (interruptTime - lastInterruptTime > 200) {
    durationBtnPressed = true;
    lastInterruptTime = interruptTime;
  }
}

void handleColorChange() {
  currentColor = (currentColor + 1) % 7; // Exclude black (index 7)
  Serial.print("Color: ");
  Serial.println(colorNames[currentColor]);
  colorBtnPressed = false;
}

void handleDurationChange() {
  currentDelay = (currentDelay + 1) % 5;
  Serial.print("Duration: ");
  Serial.print(delays[currentDelay]);
  Serial.println(" ms");
  durationBtnPressed = false;
}

void toggleLED() {
  unsigned long currentTime = millis();
  
  if (currentTime - lastToggleTime >= delays[currentDelay]) {
    ledState = !ledState;
    lastToggleTime = currentTime;
    
    if (ledState) {
      digitalWrite(RED_PIN, colors[currentColor][0]);
      digitalWrite(GREEN_PIN, colors[currentColor][1]);
      digitalWrite(BLUE_PIN, colors[currentColor][2]);
    } else {
      digitalWrite(RED_PIN, LOW);
      digitalWrite(GREEN_PIN, LOW);
      digitalWrite(BLUE_PIN, LOW);
    }
  }
}