Initial commit

lib/assets/javascripts/builder/components/metrics/metrics-tracker.js

@@ -0,0 +1,43 @@
+var _ = require('underscore');
+var MetricsModel = require('./metrics-model');
+var MetricsTypes = require('./metrics-types');
+
+/**
+ *  Metrics singleton tracker.
+ *  It sends any event to metrics endpoint.
+ */
+
+module.exports = (function () {
+  return {
+    init: function (opts) {
+      if (!opts || !opts.configModel) { throw new Error('configModel is required'); }
+
+      this._userId = opts.userId;
+      this._visId = opts.visId;
+      this._configModel = opts.configModel;
+    },
+
+    track: function (eventName, eventProperties) {
+      if (!eventName) { throw new Error('eventName is required'); }
+      this._checkEventIsConfigured(eventName);
+
+      var metricModel = new MetricsModel({
+        eventName: eventName,
+        eventProperties: eventProperties
+      }, {
+        userId: this._userId,
+        visId: this._visId,
+        configModel: this._configModel
+      });
+
+      metricModel.save();
+    },
+
+    _checkEventIsConfigured: function (eventName) {
+      var allowed = _.values(MetricsTypes);
+      if (!_.contains(allowed, eventName)) {
+        throw new Error(`"${eventName}" is not an allowed event type`);
+      }
+    }
+  };
+})();