function controller_state() {
  var controllerId = Session.get('controller_id');
  result = ControllerState.findOne({});
  console.log("jupiii", result);
  if (!result) {
    result = {}
  };
  return result;
};

function sensor_data_collection() {
  var controllerId = Session.get('controller_id');
  return SensorData.find({
    controllerId: controllerId
  }, {
    sort: {
      created_at: -1
    },
    limit: 1
  });
}

function last_sensor_reading() {
  var controller = Session.get('controller_id');
  var result = null;
  if (controller) {
    result = sensor_data_collection();
  }
  if (result && result.count() > 0) {
    return result.fetch()[0];
  } else {
    return {}
  }
}


Template.state.helpers({
  controller_state: controller_state,
  pretty_valve: function(state) {
    if (state === 'open') return "Otvoren";
    if (state === 'opening') return "Otvara se";
    if (state === 'closing') return "Zatvara se";
    if (state === 'closed') return "Zatvoren";
  },

  bucket_image: function() {
    var sensor = last_sensor_reading();
    if (sensor && sensor.tankFull === "1") {
      return "/images/barell_full.png";
    } else {
      return "/images/barell_draining.png";
    }
  },

  last_sensor_reading: last_sensor_reading,

  last_communication_time: function() {
    return moment(controller_state().time).fromNow();
  },


  water_now_button_class: function() {
    var stateObject = controller_state();
    if (stateObject.state && (stateObject.state.out_valve === 'open' || stateObject.state.out_valve === 'opening')) {
      return 'hidden';
    } else {
      return '';
    }
  },
  stop_button_class: function() {
    var stateObject = controller_state();
    if (stateObject.state && (stateObject.state.out_valve === 'closed' || stateObject.state.out_valve === 'closing')) {
      return 'hidden';
    } else {
      return '';
    }
  }

});

Template.state.events({
  'click #water_now': function() {
    var controller_id = Session.get('controller_id');
    Meteor.call('openOutValve', controller_id)
  },

  'click #stop_water_now': function() {
    var controller_id = Session.get('controller_id');
    Meteor.call('closeOutValve', controller_id)
  }

});