#include <FastLED.h>

#define NUM_LEDS 1
#define DATA_PIN 2
#define SERIALRATE 500000
#define CALIBRATION_TEMPERATURE TypicalLEDStrip  // Color correction
#define MAX_BRIGHTNESS 255 // 0-255
#define redpin 9
#define greenpin 6
#define bluepin 5

// Adalight sends a "Magic Word" (defined in /etc/boblight.conf) before sending the pixel data
uint8_t prefix[] = {'A', 'd', 'a'}, hi, lo, chk, i;
uint8_t prefix2[] = {'I', 'R', 'L'};
bool ispone = false;
bool isptwo = false;
CRGB leds[NUM_LEDS];

void setup()
{
  pinMode(redpin, OUTPUT);
  pinMode(greenpin, OUTPUT);
  pinMode(bluepin, OUTPUT);

  FastLED.addLeds<WS2812B, DATA_PIN, GRB>(leds, NUM_LEDS);

  FastLED.setTemperature( CALIBRATION_TEMPERATURE );
  FastLED.setBrightness( MAX_BRIGHTNESS );

  Serial.begin(SERIALRATE);
  Serial.print("Ada\n"); // Send "Magic Word" string to host

}

void loop() {
  // wait for first byte of Magic Word

  for(i = 0; i < sizeof prefix; ++i) {
    waitLoop:
    while (!Serial.available());
    byte fuu =Serial.read();
    if (prefix[i] == fuu)
    {
      ispone=true;
      isptwo=false;
      continue;
    }else if(prefix2[i] == fuu)
    {
       ispone=false;
       isptwo=true;
       continue;
    }
    i = 0;
    goto waitLoop;
  }
  if(ispone)
  {
  // Hi, Lo, Checksum
  while (!Serial.available());
  hi = Serial.read();
  while (!Serial.available());
  lo = Serial.read();
  while (!Serial.available());
  chk = Serial.read();

  // if checksum does not match go back to wait
  if (chk != (hi ^ lo ^ 0x55)) {
    i = 0;
    goto waitLoop;
  }
  Serial.readBytes((char*)leds, NUM_LEDS*3);

  // shows new values
  showAnalogRGB(leds[0]);
 FastLED.show();
 }
 else
 {
  dofuu();
 }

}

void showAnalogRGB(const CRGB& rgb)
{
  analogWrite(redpin, rgb.r);
  analogWrite(greenpin, rgb.g);
  analogWrite(bluepin, rgb.b);
}

void dofuu()
{
                 analogWrite(redpin, 12);
                 analogWrite(greenpin, 30);
                 analogWrite(bluepin, 174);
                 delay(500);
                 analogWrite(redpin, 210);
                 analogWrite(greenpin, 158);
                 analogWrite(bluepin, 13);
                 delay(500);
                 analogWrite(redpin, 12);
                 analogWrite(greenpin, 30);
                 analogWrite(bluepin, 174);
                 delay(500);
                 analogWrite(redpin, 0);
                 analogWrite(greenpin, 0);
                 analogWrite(bluepin, 0);
}