import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.select.Elements;
import org.jsoup.nodes.Element;
import processing.serial.*;

import cc.arduino.*;

Arduino arduino;

Serial myPort;

String waarde = "0";

int number = int(trim(waarde));

// this is the webpage containing the relevant data
String url = "http://iphone.bjair.info/m/beijing/mobile";
// this is the path in the resulting expression that leads to the data of interest
String path = "#number h1";
int refresh = 20; // sec
int walkingTime = 6; // min

void setup() {
  size(200, 200);
  background(0);
 
 
  println(Serial.list());
  myPort = new Serial(this, Serial.list()[0], 9600);
 
  noStroke();
 
  smooth();
 
  frameRate(1/(float)refresh);
 
  draw();
}

void draw() {
 
 
  // the data extraction is done in the function getTimeUntilNextBus()
  Integer timeUntilBus = getTimeUntilNextBus();
 
  // the rest here is only to calculate the leaving time that is needed to
  // catch the bus
  if(timeUntilBus != null) {
    //int diff = timeUntilBus - walkingTime;
    println("Time until leave: "+timeUntilBus);
  }
    /*
   
}

Integer getTimeUntilNextBus() {
  // doc contains the result from the website request
  Document doc;
  // this is the actual request, including error handling, simply copy this
  try {
    doc = Jsoup.connect(url).get();
  } catch(IOException e) { // Connection error
    e.printStackTrace();
    doc = null;
  } catch(IllegalArgumentException e) {
    println("Bad URL!");
    doc = null;
  }
 
  if(doc != null) {
    // this is the command that selects the data from the result expression
    Element data = doc.select(path).first();
    waarde = data.text();
    println(waarde);     //here it gives the number in the string which is around 200.
    println(number);  //here it should give the same number as an integer.
 
    
    while(number > 100){
    myPort.write(1);
    
  }
 
   
    return 4;
   
  }