int ledPin = D2;
int buttonPin = D3;
int forcePin = A2;

int buttonState = 0;
int forceReading = 0;
int sos = 0;


void setup() {
    
    // Configure the pins to be outputs
    pinMode(ledPin, OUTPUT);

    pinMode(buttonPin, INPUT_PULLUP);
    
    Particle.variable("button", buttonState);
    Particle.variable("Force-Sensitive Resistor", forceReading);
    Particle.variable("sos", sos);

}

void flash(String s) {
    if (s ==  "S") {
        Particle.publish("S...");
        for (int i = 0; i < 3; i++) {
            // Particle.publish(char(i));
            digitalWrite( ledPin, HIGH);
            delay(1000);
            digitalWrite( ledPin, LOW);
            delay(1000);
        }
        
    }  
    
    if (s ==  "O") {
        Particle.publish("O...");
        for (int i = 0; i < 3; i++) {
            digitalWrite( ledPin, HIGH);
            delay(3000);
            digitalWrite( ledPin, LOW);
            delay(1000);
        }
    } 
}

void SOS() {
    flash("S");
    delay(3000);
    flash("O");
    delay(3000);
    flash("S");
}

void loop() {
    
    buttonState = digitalRead( buttonPin);
    forceReading = analogRead( forcePin);
    
    if (buttonState == LOW) {
        if (forceReading > 1000) {
            sos = 1;
            SOS();
            Particle.publish("SOS...");
        } else {
            sos = 0;
        }
            
    } 
    
    delay(500);
}