From 1e9ae4c04ca85d8b681c7792525701a2fd80d932 Mon Sep 17 00:00:00 2001
From: PavelMakarchuk <pavel.ma99@gmail.com>
Date: Thu, 29 Oct 2026 11:35:50 -0400
Subject: [PATCH] Track page views with policyengine.org's Google Analytics

Load the GA4 tag (G-2YHG89FY0N) in the root layout in production builds, so
policyengine.org/uk/bus-fare-cap sends page views. Page views only; no custom events.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---
 dashboard/app/layout.jsx | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/dashboard/app/layout.jsx b/dashboard/app/layout.jsx
index 2cf406f..cc5860d 100644
--- a/dashboard/app/layout.jsx
+++ b/dashboard/app/layout.jsx
@@ -2,6 +2,7 @@ import PolicyEngineFooter from "../src/components/PolicyEngineFooter";
 import PolicyEngineHeader from "../src/components/PolicyEngineHeader";
 
 import "./globals.css";
+import Script from "next/script";
 
 export const metadata = {
   title: "£2 bus fare cap analysis | PolicyEngine",
@@ -16,6 +17,21 @@ export default function RootLayout({ children }) {
         <PolicyEngineHeader />
         {children}
         <PolicyEngineFooter />
+        {/* Google Analytics: policyengine.org's GA4 property; this app is served at policyengine.org/uk/bus-fare-cap through a rewrite, where the main site's GA does not reach. */}
+        {process.env.NODE_ENV === "production" && (
+          <>
+            <Script
+              src="https://www.googletagmanager.com/gtag/js?id=G-2YHG89FY0N"
+              strategy="afterInteractive"
+            />
+            <Script id="google-analytics" strategy="afterInteractive">
+              {`window.dataLayer = window.dataLayer || [];
+function gtag(){dataLayer.push(arguments);}
+gtag('js', new Date());
+gtag('config', 'G-2YHG89FY0N');`}
+            </Script>
+          </>
+        )}
       </body>
     </html>
   );