#include <Adafruit_NeoPixel.h>

// Declare a NeoPixel strip object with the specified number of pixels and pin number
#define NUM_PIXELS 16
#define buttonPin 12
Adafruit_NeoPixel strip(NUM_PIXELS, 6, NEO_GRB + NEO_KHZ800);
int buttonState = 0;
int lastButtonState = 0;
int state = 0;

void setup() {
  // Initialize serial communication
  Serial.begin(9600);

  pinMode(buttonPin, INPUT);

  strip.begin();
  strip.clear();
  // Show the changes on the strip
  strip.show();
}

void rainbow() {
    for (int i = 0; i < NUM_PIXELS; i++) {
    // Calculate the color values for the pixel
    int r = (i * 255) / (NUM_PIXELS - 1);
    int b = 255 - r;
    // Set the pixel to the calculated color
    strip.setPixelColor(i, strip.Color(r, 0, b));
  }
  // Show the changes on the strip
  strip.show();
}

void dynamicRainbow() {

}

void dynamicRing() {

}

void loop() {
  buttonState = digitalRead(buttonPin);
  if (buttonState != lastButtonState && buttonState == HIGH) {
    state++;
    state = state % 3;
    Serial.println(state);
  }
  lastButtonState = buttonState;

  switch(state) {
    case 0:
      rainbow();
    case 1:
      rainbow();
    case 2:
      rainbow();
  }

  delay(5);
}