int happyled = D0;
int timer = 0;
long currentTime = 0;
long previousTime = 0;

void setup()
{
  pinMode(happyled, OUTPUT);

  Particle.function("happyfunc", happyfunc);

  Serial.begin(9600);

  digitalWrite(happyled, HIGH);
  delay(2000);
  digitalWrite(happyled, LOW);
  delay(2000);
}

void loop() {
}

int happyfunc(String args) {
  currentTime = millis();
  if(currentTime - previousTime <= 15000) {
    for(int i = 0; i < 10; i++) {
      digitalWrite(happyled, HIGH);
      delay(200);
      digitalWrite(happyled, LOW);
      delay(100);
    }
  }
  else{
    for(int i = 0; i < 5; i++) {
      digitalWrite(happyled, HIGH);
      delay(600);
      digitalWrite(happyled, LOW);
      delay(200);
    }
  }
  previousTime = currentTime;
  return 1;
}