From 3c3a16a64afe58f449d698bd9816965d9eda4884 Mon Sep 17 00:00:00 2001
From: mildtomato <jon.summers.muir@googlemail.com>
Date: Fri, 29 Jan 2021 14:40:57 +0800
Subject: [PATCH] chore: added correct referrer policy

---
 web/static/scripts/telemetry.js | 56 +++++++++++++++++++++++++--------
 www/lib/fetchWrapper.ts         |  2 +-
 2 files changed, 44 insertions(+), 14 deletions(-)

diff --git a/web/static/scripts/telemetry.js b/web/static/scripts/telemetry.js
index 3e477644a89..52e67372301 100644
--- a/web/static/scripts/telemetry.js
+++ b/web/static/scripts/telemetry.js
@@ -1,18 +1,48 @@
 function telemetry() {
-  return fetch('https://app.supabase.io/api/telemetry/page', {
-    mode: 'cors', // 'cors' by default,
-    method: 'POST',
-    headers: {
-      'Content-Type': 'application/json',
-      Accept: 'application/json',
-    },
-    body: JSON.stringify({
-      referrer: document.referrer,
-      title: document.title,
-    }),
-  }).catch((error) => {
-    console.error('Error at telemetry - post:', error)
+  setTimeout(function () {
+    return fetch('https://app.supabase.io/api/telemetry/page', {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+        Accept: 'application/json',
+      },
+      referrerPolicy: 'no-referrer-when-downgrade',
+      body: JSON.stringify({
+        referrer: document.referrer,
+        title: document.title,
+      }),
+    }).catch((error) => {
+      console.error('Error at telemetry - post:', error)
+    })
+  }, 1000)
+}
+
+function pageState() {
+  ;(function () {
+    var pushState = history.pushState
+    var replaceState = history.replaceState
+
+    history.pushState = function () {
+      pushState.apply(history, arguments)
+      window.dispatchEvent(new Event('pushstate'))
+      window.dispatchEvent(new Event('locationchange'))
+    }
+
+    history.replaceState = function () {
+      replaceState.apply(history, arguments)
+      window.dispatchEvent(new Event('replacestate'))
+      window.dispatchEvent(new Event('locationchange'))
+    }
+
+    window.addEventListener('popstate', function () {
+      window.dispatchEvent(new Event('locationchange'))
+    })
+  })()
+
+  window.addEventListener('locationchange', function () {
+    telemetry()
   })
 }
 
+pageState()
 telemetry()
diff --git a/www/lib/fetchWrapper.ts b/www/lib/fetchWrapper.ts
index 8fd0000cf1e..6e37b549b65 100644
--- a/www/lib/fetchWrapper.ts
+++ b/www/lib/fetchWrapper.ts
@@ -5,12 +5,12 @@ interface DataProps {
 
 export const post = (url: string, data: DataProps, options = {}) => {
   return fetch(url, {
-    mode: 'cors', // 'cors' by default,
     method: 'POST',
     headers: {
       'Content-Type': 'application/json',
       Accept: 'application/json',
     },
+    referrerPolicy: 'no-referrer-when-downgrade',
     body: JSON.stringify(data),
     ...options,
   }).catch((error) => {