/**************************************************************
 * Blynk is a platform with iOS and Android apps to control
 * Arduino, Raspberry Pi and the likes over the Internet.
 * You can easily build graphic interfaces for all your
 * projects by simply dragging and dropping widgets.
 *
 *   Downloads, docs, tutorials: http://www.blynk.cc
 *   Blynk community:            http://community.blynk.cc
 *   Social networks:            http://www.fb.com/blynkapp
 *                               http://twitter.com/blynk_app
 *
 * Blynk library is licensed under MIT license
 * This example code is in public domain.
 *
 **************************************************************
 * Control the IOT Ambilight Speaker.
 * Edited by PerfectPixel (www.instructables.com/member/perfectpixel
 * 
 * For this example you need NeoPixel library:
 *   https://github.com/adafruit/Adafruit_NeoPixel
 * You will also need any other libraries required for the internet interface you are choosing to use.
 *
 * App dashboard setup:
 *   Large Slider Widget (0 - 500) on V1 called Color
 *   Button Widget (push) on V2 called Cycle
*    Button Widget (push) on V3 called Rainbow
*    Button Widget (push) on V4 called Solid
*    Button Widget (push) on V5 called Off
*    Large Slider Widget (2-10) on V10 called Speed
 *
 **************************************************************/
#include <UIPEthernet.h>  //these libraries may be different if you are using a different interface (e.g. arduino wifi shield or the arduino ethernet shield
#include <BlynkSimpleUIPEthernet.h>
#include <Adafruit_NeoPixel.h>

int colordelay = 0;
int shift = 0;

#define PIN 3  //THE PIN THE NEOPIXEL's ARE CONNECTED TO

int mode = 0; //1 = rainbow cycle, 2 = rainbow, 3 = solid color

Adafruit_NeoPixel strip = Adafruit_NeoPixel(30, PIN, NEO_RGB + NEO_KHZ800);

// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "YOUR AUTH TOKEN HERE"; 

void setup(){

  Blynk.begin(auth);
  strip.begin();
  strip.show();
}
BLYNK_WRITE(V2) 
{
  mode = 1; //RAINBOW CYCLE
}
BLYNK_WRITE(V3) 
{
  mode = 2; //RAINBOW
}
BLYNK_WRITE(V4)
{
  mode = 3; //SOLID
}
BLYNK_WRITE(V5)
{
  mode = 0; //OFF
}
BLYNK_WRITE(V1) 
{
  shift = param.asInt(); //Get the color from the slider
}

BLYNK_WRITE(V10)
{
  colordelay = param.asInt(); //Get the speed from the slider
}

void loop()
{
  Blynk.run();
  if(mode == 0){        //activitating the off button will ovveride all other colors

      colorWipe(strip.Color(0, 0, 0), 1);
    }
   else if(mode == 3){

    for (int i = 0; i < strip.numPixels(); i++)
    {
      strip.setPixelColor(i, Wheel(shift & 255));
      // OR: strip.setPixelColor(i, Wheel(((i * 256 / strip.numPixels()) + shift) & 255));
    }
    strip.show();
  } else if(mode == 2){

    for(int j=0; j<256; j++) {
    for(int i=0; i<strip.numPixels(); i++) {
      strip.setPixelColor(i, Wheel((i+j) & 255));
    }
    strip.show();
    delay(colordelay);
  }
  } else if(mode == 1){

     for(int j=0; j<256; j++) { // 5 cycles of all colors on wheel
    for(int i=0; i< strip.numPixels(); i++) {
      strip.setPixelColor(i, Wheel(((i * 256 / strip.numPixels()) + j) & 255));
    }
    strip.show();
    delay(colordelay);
  }
  }
  
}


// Input a value 0 to 255 to get a color value.
// The colours are a transition r - g - b - back to r.
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);
  }
}

void colorWipe(uint32_t c, uint8_t wait) {
  for(uint16_t i=0; i<strip.numPixels(); i++) {
    strip.setPixelColor(i, c);
    strip.show();
    delay(3);
  }
}