int SendPin = A0;   //Send signal out
int ReadPin = A1;   //Read the signal
int val = 0;        //The value of the read
int buttonPin = D0; // Button Pin
int pageN = 0;
int status = 0;
int ButtonStatus = 0;


void setup(){
  Serial.begin(9600);
  pinMode(SendPin, OUTPUT);
  pinMode(ReadPin, INPUT);
  pinMode(buttonPin, INPUT_PULLUP); // sets pin as input
  String P_Return = "0";
  Particle.publish("doit2017/cookbook/pagenumber/preview", P_Return);
}

void loop(){
  val =  analogRead(ReadPin);
  Serial.println(val);
  if (val > 200 && val < 400 ){
    pageN = 1;
    } else if (val > 1800 && val < 2200 ) {
      pageN = 2;
      } else if (val > 3200 && val < 3400 ) {
        pageN = 3;
        } else {
          pageN = 0;
        }
    if (pageN > 0 && status == 0){
      Serial.println("Smell and Imagine!");
      String S_pageN = String(pageN);
      Particle.publish("doit2017/cookbook/pagenumber/preview", S_pageN);
      status = 1;
      delay(100);
    } else if (pageN == 0 & status == 1){
      Serial.println("See you next time");
      String P_Return = "0";
      Particle.publish("doit2017/cookbook/pagenumber/preview", P_Return);
      status = 0;
      if (ButtonStatus == 1){
        Serial.println("See you next time");
        String Return = "0";
        Particle.publish("doit2017/cookbook/pagenumber/cook", Return);
        ButtonStatus = 0;
      }
      delay(100);
    }
    Serial.print("status:");
    Serial.println(status);
    int buttonState = digitalRead( buttonPin );
    Serial.println(buttonState);
    if( buttonState == LOW && status == 1 ){
      if (ButtonStatus == 0){
        Serial.println("Let's Cook!");
        String S_pageN = String(pageN);
        Particle.publish("doit2017/cookbook/pagenumber/cook", S_pageN);
        ButtonStatus = 1;
        delay(100);
      } else if (ButtonStatus == 1){
        Serial.println("See you next time");
        String Return = "0";
        Particle.publish("doit2017/cookbook/pagenumber/cook", Return);
        ButtonStatus = 0;
        delay(100);
      }
    }
  delay(100);
}