added 260907 version of worker toolkit

worker-toolkit-flaredown/repo/frontend/app/services/tracking.js

@@ -0,0 +1,74 @@
+import Ember from 'ember';
+
+export default Ember.Service.extend({
+  store: Ember.inject.service(),
+
+  setup: function(options) {
+    this.setProperties({
+      at: options.at,
+      trackableType: options.trackableType
+    });
+    this.set('newTrackings', Ember.A([]));
+  },
+
+  existingTrackings: Ember.computed('at', 'trackableType', function() {
+    return this.get('store').query('tracking', {
+      at: this.get('at'), trackable_type: this.get('trackableType')
+    });
+  }),
+
+  track: function(trackable, colorId, callback) {
+    //save new tracking for trackable and then add it to cache
+    //so that user can see it immediately without having to re-query the store
+    var tracking = this.get('store').createRecord('tracking', {trackable: trackable, colorId: colorId});
+    tracking.save().then( savedTracking => {
+      this.get('newTrackings').pushObject(savedTracking);
+      if (Ember.isPresent(callback)) {
+        callback(savedTracking);
+      }
+    });
+  },
+
+  /* params can be either:
+       {tracking: aTracking}
+     or:
+       {
+         trackable: aTrackable,
+         trackableType: 'Condition' | 'Symptom' | 'Treatment'
+       }
+  */
+  untrack: function(params, callback) {
+    if (Ember.isPresent(params.tracking)) {
+      this.destroyTracking(params.tracking, callback);
+    } else {
+      this.set('trackableType', params.trackableType);
+      this.get('existingTrackings').then(trackings => {
+        let tracking = trackings.find(record => {
+          return this.compare(record, params.trackable);
+        });
+        if (!Ember.isPresent(tracking)) {
+          tracking = this.get('newTrackings').find(record => {
+            return this.compare(record, params.trackable);
+          });
+        }
+        if (Ember.isPresent(tracking)) {
+          this.destroyTracking(tracking, callback);
+        }
+      });
+    }
+  },
+
+  compare: function(tracking, trackable) {
+    return Ember.isEqual(tracking.get('trackable.id'), trackable.get('id')) &&
+           Ember.isEqual(tracking.get('trackableType').toLowerCase(), trackable.get('constructor.modelName'));
+  },
+
+  destroyTracking: function(tracking, callback) {
+    tracking.destroyRecord().then(function() {
+      if (Ember.isPresent(callback)) {
+        callback();
+      }
+    });
+  }
+
+});