From ad031a15a40a9086f53c86a7fc1093c46f53e105 Mon Sep 17 00:00:00 2001
From: Reece Dunham <me@rdil.rocks>
Date: Sun, 12 Jan 2020 08:27:08 -0500
Subject: [PATCH] feat(v2): support IP anonymization for Google Analytics
 plugin (#2148)

* Support IP anonymization for google analytics

* Fixes

* Add docs

* typo fix

* Fix syntax

* document in suggested place

* attempted to add functionality to gtag plugin

* Remove from api-site-config

* document in appropriate places

* fix anonymize IP

Co-authored-by: Yangshun Tay <tay.yang.shun@gmail.com>
---
 packages/docusaurus-plugin-google-analytics/src/index.js | 3 ++-
 packages/docusaurus-plugin-google-gtag/src/index.js      | 6 ++++--
 website/docs/using-plugins.md                            | 4 ++++
 3 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/packages/docusaurus-plugin-google-analytics/src/index.js b/packages/docusaurus-plugin-google-analytics/src/index.js
index 8bb72276ff..349a2b672e 100644
--- a/packages/docusaurus-plugin-google-analytics/src/index.js
+++ b/packages/docusaurus-plugin-google-analytics/src/index.js
@@ -18,7 +18,7 @@ module.exports = function(context) {
     );
   }
 
-  const {trackingID} = googleAnalytics;
+  const {trackingID, anonymizeIP} = googleAnalytics;
 
   if (!trackingID) {
     throw new Error(
@@ -53,6 +53,7 @@ module.exports = function(context) {
             innerHTML: `
               window.ga=window.ga||function(){(ga.q=ga.q||[]).push(arguments)};ga.l=+new Date;
               ga('create', '${trackingID}', 'auto');
+              ga('set', 'anonymizeIp', ${anonymizeIP});
               ga('send', 'pageview');
             `,
           },
diff --git a/packages/docusaurus-plugin-google-gtag/src/index.js b/packages/docusaurus-plugin-google-gtag/src/index.js
index 30d2d611a8..eba2b605e4 100644
--- a/packages/docusaurus-plugin-google-gtag/src/index.js
+++ b/packages/docusaurus-plugin-google-gtag/src/index.js
@@ -18,7 +18,7 @@ module.exports = function(context) {
     );
   }
 
-  const {trackingID} = gtag;
+  const {anonymizeIP, trackingID} = gtag;
 
   if (!trackingID) {
     throw new Error(
@@ -70,7 +70,9 @@ module.exports = function(context) {
               window.dataLayer = window.dataLayer || [];
               function gtag(){dataLayer.push(arguments);}
               gtag('js', new Date());
-              gtag('config', '${trackingID}');`,
+              gtag('config', '${trackingID}', { ${
+              anonymizeIP ? "'anonymize_ip': true" : ''
+            } });`,
           },
         ],
       };
diff --git a/website/docs/using-plugins.md b/website/docs/using-plugins.md
index 8c132d5561..fce9b74fb4 100644
--- a/website/docs/using-plugins.md
+++ b/website/docs/using-plugins.md
@@ -312,6 +312,8 @@ module.exports = {
   themeConfig: {
     googleAnalytics: {
       trackingID: 'UA-141789564-1',
+      // Optional fields.
+      anonymizeIP: true, // Should IPs be anonymized?
     },
   },
 };
@@ -338,6 +340,8 @@ module.exports = {
   themeConfig: {
     gtag: {
       trackingID: 'UA-141789564-1',
+      // Optional fields.
+      anonymizeIP: true, // Should IPs be anonymized?
     },
   },
 };