// Define pins for single-color LED
const int led1Pin = 2;

// Define pins for RGB LED 1
const int rgb1RPin = 3;
const int rgb1GPin = 4;
const int rgb1BPin = 5;

// Define pins for RGB LED 2
const int rgb2RPin = 6;
const int rgb2GPin = 7;
const int rgb2BPin = 8;

// Define pins for RGB LED 3
const int rgb3RPin = 9;
const int rgb3GPin = 10;
const int rgb3BPin = 11;

// Define timing variables
unsigned long previousMillisLed1 = 0;
unsigned long previousMillisRGB = 0;
const long intervalLed1 = 2000;  // 2 seconds
const long intervalRGB = 2000;   // 2 seconds

// Define RGB color sequence
const int numColors = 7;
int colorIndex = 0;
int colors[numColors][3] = {
  {255, 0, 0},    // Red
  {0, 255, 0},    // Green
  {0, 0, 255},    // Blue
  {255, 255, 0},  // Yellow
  {0, 255, 255},  // Cyan
  {255, 0, 255},  // Magenta
  {255, 255, 255} // White
};

// Define LED state
bool led1State = false;

void setup() {
  // Initialize single-color LED pin as output
  pinMode(led1Pin, OUTPUT);
  
  // Initialize RGB LED pins as outputs
  pinMode(rgb1RPin, OUTPUT);
  pinMode(rgb1GPin, OUTPUT);
  pinMode(rgb1BPin, OUTPUT);
  
  pinMode(rgb2RPin, OUTPUT);
  pinMode(rgb2GPin, OUTPUT);
  pinMode(rgb2BPin, OUTPUT);
  
  pinMode(rgb3RPin, OUTPUT);
  pinMode(rgb3GPin, OUTPUT);
  pinMode(rgb3BPin, OUTPUT);
  
  // Set initial state for single-color LED (off)
  digitalWrite(led1Pin, LOW);
  
  // Set initial color for RGB LEDs (Red)
  setRGBColor(colors[0][0], colors[0][1], colors[0][2]);
  
  // Initialize timing variables to current time
  previousMillisLed1 = millis();
  previousMillisRGB = millis();
}

void loop() {
  unsigned long currentMillis = millis();
  
  // Check if it's time to toggle the single-color LED
  if (currentMillis - previousMillisLed1 >= intervalLed1) {
    previousMillisLed1 = currentMillis;
    led1State = !led1State;
    digitalWrite(led1Pin, led1State ? HIGH : LOW);
  }
  
  // Check if it's time to change the RGB LED colors
  if (currentMillis - previousMillisRGB >= intervalRGB) {
    previousMillisRGB = currentMillis;
    colorIndex = (colorIndex + 1) % numColors;
    setRGBColor(colors[colorIndex][0], colors[colorIndex][1], colors[colorIndex][2]);
  }
}

// Function to set the color of all RGB LEDs
void setRGBColor(int red, int green, int blue) {
  // Set color for RGB LED 1
  analogWrite(rgb1RPin, red);
  analogWrite(rgb1GPin, green);
  analogWrite(rgb1BPin, blue);
  
  // Set color for RGB LED 2
  analogWrite(rgb2RPin, red);
  analogWrite(rgb2GPin, green);
  analogWrite(rgb2BPin, blue);
  
  // Set color for RGB LED 3
  analogWrite(rgb3RPin, red);
  analogWrite(rgb3GPin, green);
  analogWrite(rgb3BPin, blue);
}