chore: add email hash on events

public/scripts/analytics/index.js

@@ -1,4 +1,4 @@
-// Version 1.0.5
+// Version 1.0.6
 const cacheTrackEvents = {
   interval: null,
   responses: [],
@@ -24,6 +24,20 @@ const cacheTrackEvents = {
 
     return combined.substring(0, desiredLength);
   },
+  getCookie: (name) => {
+    const value = `; ${document.cookie}`;
+    const parts = value.split(`; ${name}=`);
+    if (parts.length === 2) {
+      const cookieValue = decodeURIComponent(parts.pop().split(";").shift());
+
+      try {
+        return JSON.parse(cookieValue);
+      } catch (e) {
+        return cookieValue;
+      }
+    }
+    return null;
+  },
   trackPageUnload: () => {
     window.addEventListener("beforeunload", (event) => {
       if (!cacheTrackEvents.isPageViewSent()) {
@@ -107,6 +121,16 @@ const cacheTrackEvents = {
     )}; path=/; Domain=.deriv.com`;
   },
   processEvent: (event) => {
+    const clientInfo = getCookies("client_information");
+
+    if (clientInfo) {
+      const { email = null } = clientInfo;
+
+      if (email) {
+        event.properties.email_hash = cacheTrackEvents.hash(email);
+      }
+    }
+
     if (event?.properties?.email) {
       const email = event.properties.email;
       delete event.properties.email;