#include <Adafruit_NeoPixel.h>
#include <avr/power.h>
#define PIN            6
#define NUMPIXELS      16


const int buttonPin = 2;


int delayvalue = 80;
int l=0;

int buttonstatus=0;
int status =0;
int i=0;

Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);


void setup() {
  pinMode(buttonPin, INPUT);
    Serial.begin(115200);
    pixels.begin();

}

void loop() {
  
  status=digitalRead(buttonPin);
  
 if(status==HIGH)
 {
   buttonstatus++;
   delay(500);
   Serial.println(buttonstatus);
 }
 pixels.clear();
       pixels.setPixelColor(8, pixels.Color(0,100,0)); 
       pixels.show();

   while(buttonstatus==1)
    {
      
      
      pixels.setPixelColor(i, pixels.Color(255,255,255));
      pixels.show();
      delay(delayvalue);

      status=digitalRead(buttonPin);
       if(status==HIGH)
        {
          buttonstatus++;
          delay(500);
          Serial.println(buttonstatus);
        }
      
      pixels.setPixelColor(i-l, pixels.Color(0,0,0));
      pixels.setPixelColor(8, pixels.Color(0,100,0)); 
      pixels.show();
      delay(delayvalue);
      
      

      if(i>=NUMPIXELS)
        {
          i=i-NUMPIXELS;
        }
      i++;
    }


    while(buttonstatus==2)
    {
      Serial.println("now");
        if(i==9)
        {Serial.println("in 8");
          for(int b=5; b>0; b--)
            {

              pixels.clear();
              //if(c==0;2;4;6;8;10;12;14)
              
             /* pixels.setPixelColor(8, pixels.Color(0,255,0));
              pixels.show();
              delay(250);
              pixels.setPixelColor(8, pixels.Color(0,0,0));
              pixels.show();
              delay(250);
              */
              for(int i = 0; i <8; i++) {
                  int right=8+i;
                  int left= 8-i;
        
        //pixels.setPixelColor(left, pixels.Color(255,255,255));
                      pixels.setPixelColor(right, pixels.Color(0,200,0));
      
      
                      pixels.setPixelColor(left, pixels.Color(0,200,0));
                      pixels.show();
                      delay(100);
              

            }
          }
             buttonstatus=buttonstatus-2;
             i=0;
        }else

        
        { Serial.println("else");
          for(int b=5; b>0; b--)
            {
              Serial.println(b);
              pixels.clear();
              pixels.setPixelColor(i-1, pixels.Color(255,0,0));
              pixels.show();
              delay(250);
              pixels.setPixelColor(i-1, pixels.Color(0,0,0));
              pixels.show();
              delay(250);
            }
            buttonstatus=buttonstatus-2;
            i=0;
        }

    }
}