function BotDetector(args) {
  var self = this;
  self.isBot = false;
  self.tests = {};

  var selectedTests = args.tests || [];
  if (selectedTests.length == 0 || selectedTests.indexOf(BotDetector.Tests.SCROLL) != -1) {
    self.tests[BotDetector.Tests.SCROLL] = function() {
      var e = function() {
        self.tests[BotDetector.Tests.SCROLL] = true;
        self.update()
        self.unbindEvent(window, BotDetector.Tests.SCROLL, e)
        self.unbindEvent(document, BotDetector.Tests.SCROLL, e)
      };
      self.bindEvent(window, BotDetector.Tests.SCROLL, e);
      self.bindEvent(document, BotDetector.Tests.SCROLL, e);
    };
  }
  if (selectedTests.length == 0 || selectedTests.indexOf(BotDetector.Tests.MOUSE) != -1) {
    self.tests[BotDetector.Tests.MOUSE] = function() {
      var e = function() {
        self.tests[BotDetector.Tests.MOUSE] = true;
        self.update();
        self.unbindEvent(window, BotDetector.Tests.MOUSE, e);
      }
      self.bindEvent(window, BotDetector.Tests.MOUSE, e);
    };
  }
  if (selectedTests.length == 0 || selectedTests.indexOf(BotDetector.Tests.KEYUP) != -1) {
    self.tests[BotDetector.Tests.KEYUP] = function() {
      var e = function() {
        self.tests[BotDetector.Tests.KEYUP] = true;
        self.update();
        self.unbindEvent(window, BotDetector.Tests.KEYUP, e);
      }
      self.bindEvent(window, BotDetector.Tests.KEYUP, e);
    };
  }
  if (selectedTests.length == 0 || selectedTests.indexOf(BotDetector.Tests.SWIPE) != -1) {
    self.tests[BotDetector.Tests.SWIPE_TOUCHSTART] = function() {
      var e = function() {
        self.tests[BotDetector.Tests.SWIPE_TOUCHSTART] = true;
        self.update();
        self.unbindEvent(document, BotDetector.Tests.SWIPE_TOUCHSTART);
      }
      self.bindEvent(document, BotDetector.Tests.SWIPE_TOUCHSTART);
    }
  }
  if (selectedTests.length == 0 || selectedTests.indexOf(BotDetector.Tests.DEVICE_MOTION) != -1) {
    self.tests[BotDetector.Tests.DEVICE_MOTION] = function() {
      var e = function(event) {
        if(event.rotationRate.alpha || event.rotationRate.beta || event.rotationRate.gamma) {
          var userAgent = navigator.userAgent.toLowerCase();
          var isAndroid = userAgent.indexOf('android') != -1;
          var beta = isAndroid ? event.rotationRate.beta : Math.round(event.rotationRate.beta / 10) * 10;
          var gamma = isAndroid ? event.rotationRate.gamma : Math.round(event.rotationRate.gamma / 10) * 10;
          if (!self.lastRotationData) {
            self.lastRotationData = {
              beta: beta,
              gamma: gamma
            };
          }
          else {
            var movement = beta != self.lastRotationData.beta || gamma != self.lastRotationData.gamma;
            if (isAndroid) {
              movement = movement && (beta > 0.2 || gamma > 0.2);
            }
            var args = { beta: beta, gamma: gamma }
            self.tests[BotDetector.Tests.DEVICE_MOTION] = movement;
            self.update();
            if (movement) {
              self.unbindEvent(window, BotDetector.Tests.DEVICE_MOTION, e);
            }
          }
        }
        else {
          self.tests[BotDetector.Tests.DEVICE_MOTION] = false;
        }

      }
      self.bindEvent(window, BotDetector.Tests.DEVICE_MOTION, e);
    }
  }
  if (selectedTests.length == 0 || selectedTests.indexOf(BotDetector.Tests.DEVICE_ORIENTATION) != -1) {
    self.tests[BotDetector.Tests.DEVICE_ORIENTATION] = function() {
      var e = function() {
        self.tests[BotDetector.Tests.DEVICE_ORIENTATION] = true;
        self.update();
        self.unbindEvent(window, BotDetector.Tests.DEVICE_ORIENTATION, e);
      }
      self.bindEvent(window, BotDetector.Tests.DEVICE_ORIENTATION);
    }
  }
  if (selectedTests.length == 0 || selectedTests.indexOf(BotDetector.Tests.DEVICE_ORIENTATION_MOZ) != -1) {
    self.tests[BotDetector.Tests.DEVICE_ORIENTATION_MOZ] = function() {
      var e = function() {
        self.tests[BotDetector.Tests.DEVICE_ORIENTATION_MOZ] = true;
        self.update();
        self.unbindEvent(window, BotDetector.Tests.DEVICE_ORIENTATION_MOZ);
      }
      self.bindEvent(window, BotDetector.Tests.DEVICE_ORIENTATION_MOZ);
    }
  }


  self.cases = {};
  self.timeout = args.timeout || 1000;
  self.callback = args.callback || null;
  self.detected = false;
}

BotDetector.Tests = {
  KEYUP: 'keyup',
  MOUSE: 'mousemove',
  SWIPE: 'swipe',
  SWIPE_TOUCHSTART: 'touchstart',
  SWIPE_TOUCHMOVE: 'touchmove',
  SWIPE_TOUCHEND: 'touchend',
  SCROLL: 'scroll',
  GESTURE: 'gesture',
  GYROSCOPE: 'gyroscope',
  DEVICE_MOTION: 'devicemotion',
  DEVICE_ORIENTATION: 'deviceorientation',
  DEVICE_ORIENTATION_MOZ: 'MozOrientation'
};
BotDetector.prototype.update = function(notify) {
  var self = this;
  var count = 0;
  var tests = 0;
  for(var i in self.tests) {
    if (self.tests.hasOwnProperty(i)) {
      self.cases[i] = self.tests[i] === true;
      if (self.cases[i] === true) {
        count++;
      }
    }
    tests++;
  }
  self.isBot = count ==  0;
  self.allMatched = count == tests;
  if (notify !== false) {
    self.callback(self);
  }
}

BotDetector.prototype.bindEvent = function(e, type, handler) {
  if (e.addEventListener) {
    e.addEventListener(type, handler, false);
  }
  else if(e.attachEvent) {
    e.attachEvent("on" + type, handler);
  }
};

BotDetector.prototype.unbindEvent = function(e, type, handle) {
  if (e.removeEventListener) {
    e.removeEventListener(type, handle, false);
  }
  else {
    var evtName = "on" + type;
    if (e.detachEvent) {
      if (typeof e[evtName] === 'undefined') {
        e[type] = null
      }
      e.detachEvent(evtName)
    }
  }
};
BotDetector.prototype.monitor = function() {
  var self = this;
  for(var i in this.tests) {
    if (this.tests.hasOwnProperty(i)) {
      this.tests[i].call();
    }
  }
  this.update(false);
  setTimeout(function() {
    self.update(true);
  }, self.timeout);
};