// This #include statement was automatically added by the Particle IDE.
#include <neopixel.h>

#define PIXEL_PIN D3
#define PIXEL_COUNT 8
#define PIXEL_TYPE WS2812

int otherColor;
unsigned long lastFade = 0;
int timeInterval = 15*60000;
// int timeInterval = 10000;

Adafruit_NeoPixel strip = Adafruit_NeoPixel(PIXEL_COUNT, PIXEL_PIN, PIXEL_TYPE);

void setup() {
    strip.begin();
    strip.show(); // Initialize all pixels to 'off'
    Particle.function("eventStart", fadeToRed);
    lastFade = millis();
}

void loop() {
    // fadeToWhite();
}

void setPixels(int intensity) {
    uint16_t i;
    uint32_t c = strip.Color(255, intensity, intensity);

    for(i=0; i< strip.numPixels(); i++) {
        strip.setPixelColor(i, c );
		strip.show();
    }
	delay(100);
}

int fadeToRed(String command) {
    // fade to red
    otherColor = 255;
		unsigned long now = millis();
		while(otherColor>0) {
		    if ((now - lastFade) >= timeInterval/255) {
		        otherColor--;
		        lastFade = now;
		    }
		    setPixels(otherColor);
		    now = millis();
		}
	
	// fade to white
	otherColor = 0;
		while(otherColor<=255) {
		    if ((now - lastFade) >= timeInterval/255) {
		        otherColor++;
		        lastFade = now;
		    }
		    setPixels(otherColor);
		    now = millis();
		}
		
    return 1;
}