I'm a guest, and i'm a programmer

var arDrone = require('ar-drone');
var SerialPort = require("serialport").SerialPort;
var juja = arDrone.createClient();

var speed = 0.5;


var serialPort = new SerialPort("", {
  baudrate: 9600
});

serialPort.on("open", function () {
  console.log('BT open');
  serialPort.on('data', function(data) {
    onCmd(parse(data));
  });
});

function con(str, str1) {
	return str.indexOf(str1) >= 0;
}

function parse(data) {
	data = data.toLowerCase();
	if (con(data, "take") && con(data, "off") || // TAKE OFF
		con(data, "big") && con(data, "boss") ||
		con(data, "echo")) {
		return 0;
	} else if (con(data, "lend") || con(data, "lent") || // LAND
		con(data, "lunch") || con(data, "land"))
		return 1;
	else if (con(data, "stop") || con(data, "emergency")) // STOP
		return 2;
	else if (con(data, "sleep") || con(data, "flip")) // FLIP
		return 3;
	else if (con(data, "take") && con(data, "photo") ||  // TAKE PHOTO (SELFIE)
			con(data,"selfie") || con("data", "celsius"))
		return 4;
	else if (con(data, "rotate"))                        // ROTATE /\d+/
		return {type: "ROTATE", num: data.match(/\d+/)};
	else if (con(data, "dance"))
		return 6;
	else if (con(data, "france"), con(data, "front"))    // FRONT
		return 7;
	else if (con(data, "beck"), con(data, "back"))       // BACK
		return 8;
	else if (con(data, "left") || con(data, "black"))    // LEFT
		return 9;
	else if (con(data, "right") || con(data, "great"))
		return 10;
}

function onCmd(arg) {
	switch(arg) {
		case 0:
			juja.takeoff();
			break;
		case 1:
			juja.land();
			break;
		case 2:
			juja.stop();
			break;
		case 3:
			juja.animate('flipLeft', 500);
			break;
		case 4:
			break;
		case 5:
			juja.clockwise(speed);
			setTimeout(function() {
				juja.clockwise(0);
			}, 1000 - speed*1000);
		case 6:
			juja.front(speed);
			setTimeout(function() {
				juja.front(0);
			}, 1000 - speed*1000);
		case 7:
			juja.back(speed);
			setTimeout(function() {
				juja.back(0);
			}, 1000 - speed*1000);
		case 8:
			juja.left(speed);
			setTimeout(function() {
				juja.left(0);
			}, 1000 - speed*1000);
		case 9:
			juja.right(speed);
			setTimeout(function() {
				juja.right(0);
			}, 1000 - speed*1000);
		case 10:
			juja.calibrate(0);
	}
}