// This #include statement was automatically added by the Particle IDE.

#include <neopixel.h>

//Set pixel COUNT, PIN, and TYPE

#define PIXEL_COUNT 8

#define PIXEL_PIN D2

#define PIXEL_TYPE WS2812

// Setup Pixel

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

// Define switch

int switchPin = D3;

int switchState = LOW;

// Define duration of fade variable to 15 minutes (1000 = 1 second, 60 seconds = 1 min, 15 min)

int durationOfFade = 1000 * 60 * .25;

// Define variable to hold the start time

long timeStartedAt = -1;

long resetTimeStartedAt = -1;

// Define variable to hold value for whether timer has started or not (IFTTT Function)

bool timerStarted = FALSE;

bool resetTimerStarted = FALSE;

void setup() {

// Sets pin as input

pinMode( switchPin , INPUT_PULLUP);

// Set pixel to off state

strip.begin();

strip.show();

//Set up IFTTT Calendar Function

Particle.function("eventAlert", handleCalendarAlert);

Serial.println("Setup Complete");

}

void loop() {

int switchState = digitalRead( switchPin );

//Define whether Pixel should be on or off

if (switchState == LOW) {

if (timerStarted == TRUE) { //Determine whether timer has started or not

long timeNow = millis(); //Get the time now

long timeElapsed = timeNow - timeStartedAt; //Define how much time has elapsed

Serial.print(timeElapsed);

if (timeElapsed < durationOfFade) {

int colorValue = map(timeElapsed, 0, durationOfFade, 0, 255); //Controls color fade. Starting point is 0 to max durationOfFade value, which is then mapped to 0-255

Serial.print("Color Value: ");

Serial.print(colorValue);

int r = colorValue;

int g = 0;

int b = 0;

for( int i = 0; i <strip.numPixels(); i++) {

strip.setPixelColor( i, r, g, b);

}

strip.show();

}

else {

timerStarted = FALSE; //reset timer

resetHandler(1);

Particle.publish("timerFinished");

Serial.println("timerFinished ");

}

}

else if (resetTimerStarted == TRUE) {

Serial.print("\t");

Serial.println("Reset Timer Running");

long timeNow = millis();

long timeElapsed = timeNow - resetTimeStartedAt;

if (timeElapsed < durationOfFade) {

int colorValue = map(-timeElapsed, 0, durationOfFade, 0, 255); //Controls color fade. Starting point is 0 to max durationOfFade value, which is then mapped to 0-255

Serial.print("Color Value: ");

Serial.print(colorValue);

int r = colorValue;

int g = 0;

int b = 0;

for( int i = 0; i <strip.numPixels(); i++) {

strip.setPixelColor( i, 255, 255-colorValue, 255-colorValue);

}

strip.show();

}

else {

resetTimerStarted = FALSE; //reset timer

Particle.publish("timerFinished");

Serial.println("Reset Timer Finished ");

}

}

else {

delay(1000);

powerOn();

}

}

//TURN LIGHTS OFF BECAUSE SWITCH IS OFF

else {

for (int i = 0; i < strip.numPixels(); i++) {

strip.setPixelColor (i, 0, 0, 0);

}

strip.show();

}

}

// Define IFTTT Calendar Function Value

int handleCalendarAlert ( String cmd) {

if(cmd == "TRUE") {

timeStartedAt = millis();

timerStarted = TRUE;

return 1;

}

return -1;

}

int resetHandler (int value) {

if (value == 1) {

resetTimeStartedAt = millis();

resetTimerStarted = TRUE;

Particle.publish("resetTimerTriggered");

Serial.println("resetTimerTriggered");

return 1;

}

return -1;

}

void powerOn () {

for (int i = 0; i < strip.numPixels(); i++) {

strip.setPixelColor(i, 255, 255, 255);

strip.show();

}

}