From 7ec8ce2a5622a7dedaa309d5c0a8f58723cc4dc6 Mon Sep 17 00:00:00 2001
From: David Nguyen <davidngu28@gmail.com>
Date: Thu, 28 Sep 2023 12:56:53 +1000
Subject: [PATCH] feat: add posthog reverse proxy (#449)

---
 apps/marketing/next.config.js           | 8 ++++++++
 apps/web/next.config.js                 | 8 ++++++++
 packages/lib/constants/feature-flags.ts | 4 +++-
 3 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/apps/marketing/next.config.js b/apps/marketing/next.config.js
index e74f7d545..aeb06bdfd 100644
--- a/apps/marketing/next.config.js
+++ b/apps/marketing/next.config.js
@@ -56,6 +56,14 @@ const config = {
       },
     ];
   },
+  async rewrites() {
+    return [
+      {
+        source: '/ingest/:path*',
+        destination: 'https://eu.posthog.com/:path*',
+      },
+    ];
+  },
 };
 
 module.exports = withContentlayer(config);
diff --git a/apps/web/next.config.js b/apps/web/next.config.js
index c4359060b..b9e5d2517 100644
--- a/apps/web/next.config.js
+++ b/apps/web/next.config.js
@@ -29,6 +29,14 @@ const config = {
       transform: 'lucide-react/dist/esm/icons/{{ kebabCase member }}',
     },
   },
+  async rewrites() {
+    return [
+      {
+        source: '/ingest/:path*',
+        destination: 'https://eu.posthog.com/:path*',
+      },
+    ];
+  },
 };
 
 module.exports = config;
diff --git a/packages/lib/constants/feature-flags.ts b/packages/lib/constants/feature-flags.ts
index e23f59eba..e972b47c2 100644
--- a/packages/lib/constants/feature-flags.ts
+++ b/packages/lib/constants/feature-flags.ts
@@ -1,3 +1,5 @@
+import { APP_BASE_URL } from './app';
+
 /**
  * The flag name for global session recording feature flag.
  */
@@ -23,7 +25,7 @@ export const LOCAL_FEATURE_FLAGS: Record<string, boolean> = {
  */
 export function extractPostHogConfig(): { key: string; host: string } | null {
   const postHogKey = process.env.NEXT_PUBLIC_POSTHOG_KEY;
-  const postHogHost = process.env.NEXT_PUBLIC_POSTHOG_HOST;
+  const postHogHost = `${APP_BASE_URL}/ingest`;
 
   if (!postHogKey || !postHogHost) {
     return null;