var Tinkerforge = require('../Tinkerforge')
,   Conf        = require('./config.json')
,   Helper      = require('../Adawim/helper')
,   Log         = require('../Adawim/logging')
,   http        = require('http');


Helper.each(Conf.items, function(item) {
  var HOST = item.host;
  var PORT = item.port;
  var UID = item.uid;
  
  Log.log('Init ' + UID);
  
  var ipcon = new Tinkerforge.IPConnection(); // Create IP connection
  var dus = new Tinkerforge.BrickletDistanceUS(UID, ipcon); // Create device object
  
  var counter = 0;
  var readyForNextNotification = true;
  
  ipcon.connect(HOST, PORT,
    function (error) {
      Log.log('Error: ' + error);
    }
  ); // Connect to brickd
  // Don't use device before ipcon is connected
  
  ipcon.on(Tinkerforge.IPConnection.CALLBACK_CONNECTED,
    function (connectReason) {
      // Set period for distance value callback to 0.2s (200ms)
      // Note: The distance value callback is only called every 0.2 seconds
      //       if the distance value has changed since the last call!
      dus.setDistanceCallbackPeriod(200);
    }
  );
  
  // Register distance value callback
  dus.on(Tinkerforge.BrickletDistanceUS.CALLBACK_DISTANCE,
    // Callback function for distance value callback
    function (distance) {
      //Log.log('Distance Value: ' + distance);
      
      if(distance < 200 && readyForNextNotification) {
        counter++;
        readyForNextNotification = false;
        
        var url2callObj = (counter % 2 == 0 ? item.on.action.on : item.on.action.off);
        
        Log.log('Distance Value: ' + distance + ', URL to call: ' + url2callObj.host + ':' + url2callObj.port + url2callObj.path);
        doHoBuDoorBellCall(url2callObj);
        
        setTimeout(function() { readyForNextNotification = true; }, item.on.action.timeout);
      }
    }
  );
  
  process.on( 'SIGINT', function() {
    Log.log( "Gracefully disconnect " + HOST );
    ipcon.disconnect();
    process.exit( );
  });
});


/* private */
function doHoBuDoorBellCall(options) {
  callback = function(response) {
    var str = '';
  
    //another chunk of data has been recieved, so append it to `str`
    response.on('data', function (chunk) {
      str += chunk;
    });

    //the whole response has been recieved, so we just print it out here
    response.on('end', function () {
      Log.log(str);
    });
  }

  var req = http.request(options, function(res) {
    //Log.inspect('Result', res);
  });
  
  req.on('error', function(err) {
    Log.error(err);
  });
  
  req.end();
}