introducing isFirstPageView property in Page event and in new identity call for Marketing traffic source attribution (#1719)

qdrant-landing/themes/qdrant-2024/layouts/partials/js.html

@@ -11,6 +11,10 @@
 <!-- OneTrust Cookies Consent Notice end for local.qdrant.tech -->
 
 <!-- Segment -->
+<script>
+  const isFirstPageView = !localStorage.getItem('ajs_anonymous_id') && localStorage.getItem('isFirstPageView') === null;
+  localStorage.setItem('isFirstPageView', isFirstPageView);
+</script>
 {{ if hugo.IsProduction }}
   <script>
     !function(){const writeKey = "{{ .Site.Params.segmentWriteKey }}";var i="analytics",analytics=window[i]=window[i]||[];if(!analytics.initialize)if(analytics.invoked)window.console&&console.error&&console.error("Segment snippet included twice.");else{analytics.invoked=!0;analytics.methods=["trackSubmit","trackClick","trackLink","trackForm","pageview","identify","reset","group","track","ready","alias","debug","page","screen","once","off","on","addSourceMiddleware","addIntegrationMiddleware","setAnonymousId","addDestinationMiddleware","register"];analytics.factory=function(e){return function(){if(window[i].initialized)return window[i][e].apply(window[i],arguments);var n=Array.prototype.slice.call(arguments);if(["track","screen","alias","group","page","identify"].indexOf(e)>-1){var c=document.querySelector("link[rel='canonical']");n.push({__t:"bpc",c:c&&c.getAttribute("href")||void 0,p:location.pathname,u:location.href,s:location.search,t:document.title,r:document.referrer})}n.unshift(e);analytics.push(n);return analytics}};for(var n=0;n<analytics.methods.length;n++){var key=analytics.methods[n];analytics[key]=analytics.factory(key)}analytics.load=function(key,n){var t=document.createElement("script");t.type="text/javascript";t.async=!0;t.setAttribute("data-global-segment-analytics-key",i);t.src="https://evs.analytics.qdrant.tech/5caWuitPgcGFN5Q7HMpTaj/vEkmzjuRSqeXGbhGAFTWex.min.js";var r=document.getElementsByTagName("script")[0];r.parentNode.insertBefore(t,r);analytics._loadOptions=n};analytics._writeKey=writeKey;analytics._cdn = "https://evs.analytics.qdrant.tech";analytics.SNIPPET_VERSION="5.2.0";