#include <FastLED.h>
#include <Wire.h>

// Number of LEDs in the first circle around the proximity sensor
#define NUM_LEDS_VISION_01 35
// Number of LEDs in the second circle around the photon vision camera
#define NUM_LEDS_VISION_02 35
// Number of LEDs in the first strip
#define NUM_LEDS_STRING_01 4
// TODO Make Mathes
#define NUM_LEDS_TOTAL 35
#define LED_PIN 2
#define I2C_ADDRESS 4

CRGB leds[NUM_LEDS_TOTAL];

// function that executes whenever data is received from master
// this function is registered as an event, see setup()
void receiveEvent(int numberData) {
    while (Wire.available() > 0) { // loop through all 
    
        char c = Wire.read(); // receive byte as a character
        Serial.print(c);      // print the character
    }
}

void setup() {
    Wire.begin(I2C_ADDRESS);      // join i2c bus with address 4
    Wire.onReceive(receiveEvent); // register event
    Serial.begin(9600);           // start serial for output

    FastLED.addLeds<WS2812B, LED_PIN, GRB>(leds, NUM_LEDS_TOTAL);
    FastLED.setBrightness(50);
}

void loop() {
  for(int i = 0; i < NUM_LEDS_TOTAL; i++) {
    Serial.print(i);
    // Generate top eyelid
    fill_solid(leds, i, CRGB::Red);
    fill_solid(leds, i - 1, CRGB::Black);
    FastLED.show();
    delay(1000);
    // Clear buffer
    fill_solid(leds, NUM_LEDS_TOTAL, CRGB::Black);
  }
}