Remove references to previous path as it is no longer required (#12402)

* Remove previousPath

* Remove previousPath

* getReferrer only requires platform as a param

* Reinstate getAtUserId as it was accidentially deleted

* Fix tests

* Fix tests

* Reinstate accidentally deleted variable

* Reinstate accidentally deleted variable

* Only set virtual referrer on AMP now that previous path has been removed

* Resinstate check for document.referrer

Author: karinathomasbbc

src/app/components/ATIAnalytics/atiUrl/index.test.ts

@@ -320,9 +320,7 @@ describe('Reverb', () => {
       pageIdentifier: 'pageIdentifier',
       pageTitle: 'pageTitle',
       platform: 'canonical' as Platforms,
-      previousPath: '',
       producerName: 'producerName',
-      origin: 'http://localhost',
       nationsProducer: '',
       statsDestination: 'statsDestination',
       timePublished: 'timePublished',

src/app/components/ATIAnalytics/atiUrl/index.ts

@@ -40,16 +40,14 @@ export const buildATIPageTrackPath = ({
   statsDestination,
   timePublished,
   timeUpdated,
-  origin,
-  previousPath,
   categoryName,
   campaigns,
   nationsProducer,
   ampExperimentName,
   experimentVariant,
 }: ATIPageTrackingProps) => {
   const href = getHref(platform);
-  const referrer = getReferrer(platform, origin, previousPath);
+  const referrer = getReferrer(platform);
   const campaignType = getCampaignType();
 
   // on AMP, variable substitutions are used in the value and they cannot be
@@ -269,7 +267,7 @@ export const buildATIPageTrackPath = ({
       // the ref param should always be the last param because ATI will interpret it as part of the referrer URL
       key: 'ref',
       description: 'referrer url',
-      value: getReferrer(platform, origin, previousPath),
+      value: getReferrer(platform),
       wrap: false,
       // disable encoding for this parameter as ati does not appear to support
       // decoding of the ref parameter
@@ -431,16 +429,14 @@ export const buildReverbAnalyticsModel = ({
   pageIdentifier,
   pageTitle,
   platform,
-  previousPath,
   producerName,
-  origin,
   nationsProducer,
   statsDestination,
   timePublished,
   timeUpdated,
 }: ATIPageTrackingProps) => {
   const href = getHref(platform);
-  const referrer = getReferrer(platform, origin, previousPath);
+  const referrer = getReferrer(platform);
 
   const aggregatedCampaigns = (Array.isArray(campaigns) ? campaigns : [])
     .map(({ campaignName }) => campaignName)