Discovery Bid Adapter : build UTM tag data

modules/discoveryBidAdapter.js

@@ -25,6 +25,9 @@ const COOKIE_RETENTION_TIME = 365 * 24 * 60 * 60 * 1000; // 1 year
 const COOKY_SYNC_IFRAME_URL = 'https://asset.popin.cc/js/cookieSync.html';
 export const THIRD_PARTY_COOKIE_ORIGIN = 'https://asset.popin.cc';
 
+const UTM_KEY = '_ss_pp_utm';
+let UTMValue = {};
+
 const NATIVERET = {
   id: 'id',
   bidfloor: 0,
@@ -409,6 +412,20 @@ function getItems(validBidRequests, bidderRequest) {
   return items;
 }
 
+export const buildUTMTagData = (url) => {
+  if (!storage.cookiesAreEnabled()) return;
+  const urlParams = utils.parseUrl(url).search;
+  const UTMParams = {};
+  Object.keys(urlParams).forEach(key => {
+    if (/^utm_/.test(key)) {
+      UTMParams[key] = urlParams[key];
+    }
+  });
+  UTMValue = JSON.parse(storage.getCookie(UTM_KEY) || '{}');
+  Object.assign(UTMValue, UTMParams);
+  storage.setCookie(UTM_KEY, JSON.stringify(UTMValue), getCurrentTimeToUTCString());
+}
+
 /**
  * get rtb qequest params
  *
@@ -443,6 +460,10 @@ function getParam(validBidRequests, bidderRequest) {
   const desc = getPageDescription();
   const keywords = getPageKeywords();
 
+  try {
+    buildUTMTagData(page);
+  } catch (error) { }
+
   if (items && items.length) {
     let c = {
       // TODO: fix auctionId leak: https://github.com/prebid/Prebid.js/issues/9781

test/spec/modules/discoveryBidAdapter_spec.js

@@ -9,7 +9,8 @@ import {
   getConnectionDownLink,
   THIRD_PARTY_COOKIE_ORIGIN,
   COOKIE_KEY_MGUID,
-  getCurrentTimeToUTCString
+  getCurrentTimeToUTCString,
+  buildUTMTagData
 } from 'modules/discoveryBidAdapter.js';
 import * as utils from 'src/utils.js';
 
@@ -252,6 +253,39 @@ describe('discovery:BidAdapterTests', function () {
         expect(storage.setCookie.calledOnce).to.be.false;
       });
     })
+    describe('buildUTMTagData function', function() {
+      let sandbox;
+
+      beforeEach(() => {
+        sandbox = sinon.sandbox.create();
+        sandbox.stub(storage, 'getCookie');
+        sandbox.stub(storage, 'setCookie');
+        sandbox.stub(utils, 'parseUrl').returns({
+          search: {
+            utm_source: 'example.com'
+          }
+        });
+        sandbox.stub(storage, 'cookiesAreEnabled');
+      })
+
+      afterEach(() => {
+        sandbox.restore();
+      });
+
+      it('should set UTM cookie', () => {
+        storage.cookiesAreEnabled.callsFake(() => true);
+        storage.getCookie.callsFake(() => null);
+        buildUTMTagData();
+        expect(storage.setCookie.calledOnce).to.be.true;
+      });
+
+      it('should not set UTM when cookies are not enabled', () => {
+        storage.cookiesAreEnabled.callsFake(() => false);
+        storage.getCookie.callsFake(() => null);
+        buildUTMTagData();
+        expect(storage.setCookie.calledOnce).to.be.false;
+      });
+    })
   });
 
   it('discovery:validate_response_params', function () {