#include <Adafruit_NeoPixel.h>

#define PIN 8
int pushButton = 7;

boolean onoff = false;
int prevState = 0;
int buttonState;

Adafruit_NeoPixel strip = Adafruit_NeoPixel(32, PIN, NEO_GRB + NEO_KHZ800);

void setup() {
  Serial.begin(9600);
  strip.begin();
  strip.show(); // Initialize all pixels to 'off'
  pinMode(pushButton, INPUT);
}

void loop() {
  buttonState = digitalRead(pushButton);
  if(prevState == 0 && buttonState == 1) {
    onoff = true;
    prevState = 1;
  }
  Serial.println(onoff);
  if(onoff) {
    delay(1000);
    rainbowCycle(20);
  }
  else {
    for(uint16_t i=0; i< strip.numPixels(); i++) {
      strip.setPixelColor(i,strip.Color(0, 0, 0));
      strip.show();
    }
    delay(10);
  }
}

void rainbowCycle(uint8_t wait) {
  uint16_t i, j;

  for(j=0; j<256; j++) {
    for(i=0; i< strip.numPixels(); i++) {
      buttonState = digitalRead(pushButton);
      if(buttonState == 0)
        strip.setPixelColor(i, Wheel(((i * 256 / strip.numPixels()) + j) & 255));
      else if(buttonState == 1) {
        prevState = 0;
        onoff = false;
      }
    }
    strip.show();
    delay(wait);
  }
}

uint32_t Wheel(byte WheelPos) {
  if(WheelPos < 85) {
   return strip.Color(WheelPos * 3, 255 - WheelPos * 3, 0);
  } else if(WheelPos < 170) {
   WheelPos -= 85;
   return strip.Color(255 - WheelPos * 3, 0, WheelPos * 3);
  } else {
   WheelPos -= 170;
   return strip.Color(0, WheelPos * 3, 255 - WheelPos * 3);
  }
}