temperature sensors enabled / disabled ui

app/lib/zoblak.js

@@ -24,12 +24,37 @@ Meteor.zoblak.client = {
     if (!controller.features) return false;
 
     return controller.features[feature] === true;
+  },
+
+  sensor_data_collection: function() {
+    var controllerId = Session.get('controller_id');
+    return SensorData.find({
+      controllerId: controllerId
+    }, {
+      sort: {
+        created_at: -1
+      },
+      limit: 3
+    });
+  },
+
+  last_sensor_reading: function() {
+    var controller = Session.get('controller_id');
+    var result = null;
+    if (controller) {
+      result = Meteor.zoblak.client.sensor_data_collection();
+    }
+    if (result && result.count() > 0) {
+      return result.fetch()[0];
+    } else {
+      return {}
+    }
   }
 }
 
 Meteor.zoblak.shared = {
   valid_temperature: function(value) {
-      return (parseFloat(value) > -40 && parseFloat(value) < 50);
+    return (parseFloat(value) > -40 && parseFloat(value) < 50);
   }
 }
 
@@ -61,7 +86,7 @@ Meteor.zoblak.server = {
       var controller_id = ids[index];
       try {
         whatToDo(controller_id);
-      } catch(err) {
+      } catch (err) {
         console.log('Cannot call ', whatToDo, controller_id, err);
       }
     }