feat: set experiment version in cookie to be read on server

server/auth-router.js

@@ -124,6 +124,11 @@ module.exports = function authRouter(config = {}) {
 			options.partnerContentId = req.query.partnerContentId;
 		}
 
+		// Opt-In Communication Exp MP-271
+		if (cookies.opt_in_comms) {
+			options.optInComms = 'b';
+		}
+
 		info(`LoginUI: attempt login, session id:${req.sessionID}, cookie:${getSyncCookie(req)}, done url:${req.query.doneUrl}`); // eslint-disable-line max-len
 		passport.authenticate('auth0', options)(req, res, next);
 	});

src/components/WwwFrame/TheHeader.vue

@@ -579,6 +579,7 @@ import _throttle from 'lodash/throttle';
 import numeral from 'numeral';
 import TeamsMenu from '@/components/WwwFrame/Header/TeamsMenu';
 import { readBoolSetting } from '@/util/settingsUtils';
+import experimentVersionFragment from '@/graphql/fragments/experimentVersion.graphql';
 import KvButton from '~/@kiva/kv-components/vue/KvButton';
 import KvMaterialIcon from '~/@kiva/kv-components/vue/KvMaterialIcon';
 import KvPageContainer from '~/@kiva/kv-components/vue/KvPageContainer';
@@ -587,6 +588,7 @@ import PromoCreditBanner from './PromotionalBanner/Banners/PromoCreditBanner';
 
 const hasLentBeforeCookie = 'kvu_lb';
 const hasDepositBeforeCookie = 'kvu_db';
+const COMMS_OPT_IN_EXP_KEY = 'opt_in_comms';
 
 const optimizelyUserDataQuery = gql`query optimizelyUserDataQuery {
   	my {
@@ -798,6 +800,17 @@ export default {
 			}
 		}
 
+		if (this.cookieStore.get(COMMS_OPT_IN_EXP_KEY) !== 'true') {
+			const { version } = this.apollo.readFragment({
+				id: `Experiment:${COMMS_OPT_IN_EXP_KEY}`,
+				fragment: experimentVersionFragment,
+			}) ?? {};
+
+			if (version === 'b') {
+				this.cookieStore.set(COMMS_OPT_IN_EXP_KEY, true, { path: '/' });
+			}
+		}
+
 		userHasLentBefore(this.cookieStore.get(hasLentBeforeCookie) === 'true');
 		userHasDepositBefore(this.cookieStore.get(hasLentBeforeCookie) === 'true');
 	},