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 test = int(waarde);

// this is the webpage containing the relevant data
String url = "http://iphone.bjair.info/m/beijing/mobile";

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();
 

  if(timeUntilBus != null) {
    //int diff = timeUntilBus - walkingTime;
    println("Time until leave: "+timeUntilBus);
  }
    /*
 
    if(diff > 10 || diff < 0)
      background(255,0,0);
    else if(diff > 5)
      background(255,255,0);
    else if(diff >= 0)
      background(0,255,0);
  } else {
    background(0);
  }*/
}

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);
   
    return 4;/*
    // the rest here is only to get the data in a nice format, times is a list
    if(times != null && times.size() > 0) {
      // timeString contains then the first string of the list times
      String timeString = times.first().text();
      // this is to separate the number from min, eg if timeString is "10 min"
      // splitResult will contain "10" then...
      String[] splitResult = split(timeString, ' ');
      
      if(splitResult.length > 0) {
        return parseInt(splitResult[0]);
      }
    }*/
  }
 
  if(test > 100){
    myPort.write(1);
    
  }
  else{
    myPort.write(2);
  }
 
 
  return null;
}