// Array to hold the pin numbers for R, G, B channels
int ledPins[3] = {9, 10, 11};  // PWM-capable pins
int ledPins_2[3] = {3, 5, 6};

// 2D array to hold multiple colors (10 colors in this case)
int colors[10][3] = {
  {0, 204, 255},    // cyan
  {255, 204, 0},    // yellow
  {153, 51, 255},   // violet
  {255, 102, 255},  // pink
  {255, 255, 255},  // white
  {255, 255, 255},  // white (repeated)
  {0, 0, 255},      // blue
  {153, 51, 255},   // rose
  {0, 204, 0},      // green
  {255, 0, 0}       // red
};

// Define the pin for the button
const int buttonPin = 2; // Button pin
int currentPattern = 0; // Current pattern index

void setup() {
  // Set each pin as output
  for (int i = 0; i < 3; i++) {
    pinMode(ledPins[i], OUTPUT);
    pinMode(ledPins_2[i], OUTPUT);
  }
  
  pinMode(buttonPin, INPUT_PULLUP); // Set the button pin as input with pull-up resistor
}

void loop() {
  // Check button press to change patterns
  if (digitalRead(buttonPin) == LOW) {
    currentPattern = (currentPattern + 1) % 3; // Change pattern (0, 1, 2)
    delay(1000); // Debounce delay
  }
  
  // Execute the selected pattern
  switch (currentPattern) {
    case 0:
      pattern1();
      break;
    case 1:
      pattern2();
      break;
    case 2:
      pattern3();
      break;
  }
}

void setColor(int color1[3], int color2[3]) {
  // Write the corresponding PWM values to the pins
  for (int i = 0; i < 3; i++) {
    analogWrite(ledPins[i], 255 - color1[i]);
    analogWrite(ledPins_2[i], 255 - color2[i]); // For common anode, invert PWM value
  }
}

// Define pattern functions
void pattern1() {
  for (int i = 0; i < 10; i++) { // Loop through colors
    setColor(colors[i], colors[9 - i]);
    delay(2000); // Wait before changing color
  }
}

void pattern2() {
  for (int i = 0; i < 10; i++) { // Loop through colors with a different effect
    setColor(colors[i], colors[i+1]);
    delay(100); // Wait before changing color
  }
}

void pattern3() {
  for (int i = 0; i < 10; i++) { // Loop through colors with another effect
    setColor(colors[(i + 2) % 10], colors[i + 5]);
    delay(5000); // Wait before changing color
  }
}