// C++ code
//

#include <Adafruit_NeoPixel.h>

#define PIN 2	 // input pin Neopixel is attached to

#define NUMPIXELS      4 // number of neopixels in Ring

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

int delayval = 1; // timing delay

int redColor = 0;
int greenColor = 0;
int blueColor = 0;

int play = 0;

int PlayPausebutton = 0;

int Next = 0;

int Previous = 0;

int NextButton = 0;

int PreviousButton = 0;

int SYNC = 0;

int SYNCBUTTON = 0;

void setup()
{
  pinMode(4, INPUT);
  pinMode(5, INPUT);
  pinMode(6, INPUT);
  pinMode(3, OUTPUT);
  pinMode(7, OUTPUT);
  pinMode(LED_BUILTIN, OUTPUT);
  pinMode(8, OUTPUT);
  pinMode(9, OUTPUT);
    pixels.begin(); 
}

void loop()
{
   setColor();

  for(int i=0;i<NUMPIXELS;i++){

    // pixels.Color takes RGB values, from 0,0,0 up to 255,255,255
    pixels.setPixelColor(i, pixels.Color(redColor, greenColor, blueColor)); // Moderately bright green color.

    pixels.show(); // This sends the updated pixel color to the hardware.

    delay(delayval); // Delay for a period of time (in milliseconds).
    
    // Serial.println(i);
    
    if (i == NUMPIXELS){
    	i = 0; // start all over again!
        setColor();
    }
  }
  play = digitalRead(4);
  Previous = digitalRead(5);
  Next = digitalRead(6);
  analogWrite(3, 0);
  analogWrite(3, 0);
  analogWrite(3, 153);
  if (play == HIGH) {
    if (PlayPausebutton == 0) {
      digitalWrite(7, HIGH);
      digitalWrite(LED_BUILTIN, HIGH);
      delay(500); // Wait for 500 millisecond(s)
      digitalWrite(LED_BUILTIN, LOW);
      digitalWrite(7, LOW);
      PlayPausebutton = 3;
    }
  } else {
    if (PlayPausebutton == 3) {
      digitalWrite(LED_BUILTIN, HIGH);
      digitalWrite(7, HIGH);
      delay(500); // Wait for 500 millisecond(s)
      digitalWrite(LED_BUILTIN, LOW);
      digitalWrite(7, LOW);
      PlayPausebutton = 0;
    }
  }
  if (Previous == HIGH) {
    if (PreviousButton == 0) {
      digitalWrite(8, HIGH);
      digitalWrite(LED_BUILTIN, HIGH);
      delay(500); // Wait for 500 millisecond(s)
      digitalWrite(LED_BUILTIN, LOW);
      digitalWrite(8, LOW);
      PreviousButton = 3;
    }
  } else {
    if (PreviousButton == 3) {
      digitalWrite(LED_BUILTIN, LOW);
      digitalWrite(8, LOW);
      delay(500); // Wait for 500 millisecond(s)
      digitalWrite(LED_BUILTIN, LOW);
      digitalWrite(8, LOW);
      PreviousButton = 0;
    }
  }
  if (Next == HIGH) {
    if (NextButton == 0) {
      digitalWrite(9, HIGH);
      digitalWrite(LED_BUILTIN, HIGH);
      delay(500); // Wait for 500 millisecond(s)
      digitalWrite(LED_BUILTIN, LOW);
      digitalWrite(9, LOW);
      NextButton = 3;
    }
  } else {
    if (NextButton == 3) {
      digitalWrite(LED_BUILTIN, LOW);
      digitalWrite(9, LOW);
      delay(500); // Wait for 500 millisecond(s)
      digitalWrite(LED_BUILTIN, LOW);
      digitalWrite(9, LOW);
      NextButton = 0;
    }
  }
}


void setColor(){
  redColor = (92);
  greenColor = (23);
  blueColor = (0);
}