1. Add GA node code( initial commit )

2. publish cjs to npm
3. Add a test to download rudder-sdk-node module from npm and use it to send data to BE and GA.
4. Other refactoring.

rudder-client-javascript/analytics/analytics.js

@@ -64,6 +64,7 @@ class Analytics {
    * @memberof Analytics
    */
   processResponse(status, response) {
+    console.log("===in process response=== " + status);
     response = JSON.parse(response);
     response.source.destinations.forEach(function(destination, index) {
       console.log(
@@ -112,6 +113,13 @@ class Analytics {
       }
     });
 
+    // Add GA forcibly for tests , TODO : Remove
+    /* let GAClass = integrations["GA"];
+    let GAInstance = new GAClass("UA-143161493-8");
+    GAInstance.init();
+    console.log("GA initialized");
+    this.clientIntegrationObjects.push(GAInstance); */
+
     for (let i = 0; i < this.clientIntegrationObjects.length; i++) {
       //send the queued events to the fetched integration
       this.toBeProcessedByIntegrationArray.forEach(event => {
@@ -509,6 +517,7 @@ class Analytics {
   load(writeKey) {
     console.log("inside load ");
     this.writeKey = writeKey;
+    //this.init([], this.configArray);  TODO: Remove
     getJSONTrimmed(
       this,
       CONFIG_URL + "/source-config?write_key=" + writeKey,

rudder-client-javascript/analytics/integrations/GA/browser.js

@@ -0,0 +1,30 @@
+class GA {
+  constructor() {
+    console.log("nothing to construct");
+  }
+
+  init() {
+    console.log("browser not implemented");
+
+    console.log("===in init===");
+  }
+
+  identify(rudderElement) {
+    console.log("browser not implemented");
+  }
+
+  track(rudderElement) {
+    console.log("browser not implemented");
+  }
+
+  page(rudderElement) {
+    console.log("browser not implemented");
+  }
+
+  loaded() {
+    console.log("in GA isLoaded");
+    console.log("browser not implemented");
+  }
+}
+
+export { GA };

rudder-client-javascript/analytics/integrations/GA/index.js

@@ -0,0 +1,4 @@
+import { GANode } from "./node";
+import { GA } from "./browser";
+
+export default process.browser ? GA : GANode;

rudder-client-javascript/analytics/integrations/GA/node.js

@@ -0,0 +1,58 @@
+import ua from "universal-analytics";
+
+class GANode {
+  constructor(trackingID) {
+    this.trackingID = trackingID;
+    this.client = "";
+  }
+
+  init() {
+    console.log("===in GA Node init===");
+
+    //this.client = ua(this.trackingID, "6a14abda-6b12-4578-bf66-43c754eaeda9");
+  }
+
+  identify(rudderElement) {
+    console.log("=== in GA Node identify===");
+    this.client = ua(this.trackingID, rudderElement.message.user_id);
+  }
+
+  track(rudderElement) {
+    console.log("=== in GA Node track===");
+    this.client.event(
+      rudderElement.message.type,
+      rudderElement.message.event,
+      function(err) {
+        // Handle the error if necessary.
+        // In case no error is provided you can be sure
+        // the request was successfully sent off to Google.
+        console.log("error sending to GA" + err);
+      }
+    );
+  }
+
+  page(rudderElement) {
+    console.log("=== in GA Node page===");
+    if (
+      rudderElement.message.properties &&
+      rudderElement.message.properties.path
+    ) {
+      this.client.pageview(rudderElement.message.properties.path, function(
+        err
+      ) {
+        // Handle the error if necessary.
+        // In case no error is provided you can be sure
+        // the request was successfully sent off to Google.
+        console.log("error sending to GA" + err);
+      });
+      //this.client.pageview(rudderElement.message.properties.path).send();
+    }
+  }
+
+  loaded() {
+    console.log("in GA isLoaded");
+    console.log("node not supported");
+  }
+}
+
+export { GANode };

rudder-client-javascript/analytics/integrations/index.js

@@ -1,5 +1,6 @@
 import * as HubSpot from "./HubSpot";
+import * as GA from "./GA";
 
-let integrations = { HS: HubSpot.default };
+let integrations = { HS: HubSpot.default, GA: GA.default };
 
 export { integrations };