From 69733af6236e1e8ed0e3ee00c1a5bad33edf9796 Mon Sep 17 00:00:00 2001
From: Niels Reijn <reijnn@gmail.com>
Date: Tue, 9 Feb 2021 17:07:45 +0100
Subject: [PATCH] Register Service worker

---
 exampleSite/config.toml          | 5 +++++
 layouts/partials/head.html       | 4 ++++
 layouts/partials/javascript.html | 9 +++++++++
 static/sw.js                     | 1 +
 4 files changed, 19 insertions(+)
 create mode 100644 static/sw.js

diff --git a/exampleSite/config.toml b/exampleSite/config.toml
index 46394ad84..a5b729358 100644
--- a/exampleSite/config.toml
+++ b/exampleSite/config.toml
@@ -61,6 +61,11 @@ disableHugoGeneratorInject = false
 
   homeSubtitle = "Hello Friend NG"
 
+  # Uncomment enableServiceWorker only if you have configured your site.webmanifest in the static folder.
+  # Check the documentation on how to generate a site.webmanifest.
+  # 
+  # enableServiceWorker = true
+
   # Set a background for the homepage
   # backgroundImage = "assets/images/background.jpg"
 
diff --git a/layouts/partials/head.html b/layouts/partials/head.html
index a855a5263..d9b6acda8 100644
--- a/layouts/partials/head.html
+++ b/layouts/partials/head.html
@@ -8,6 +8,10 @@
 <meta name="theme-color" content="{{ .Site.Params.themeColor }}" />
 <link rel="canonical" href="{{ .Permalink }}" />
 
+{{- if .Site.Params.enableServiceWorker }}
+    <link rel="manifest" href="/site.webmanifest">
+{{ end }}
+
 {{ block "title" . }}
     <title>
         {{ if .IsHome }}
diff --git a/layouts/partials/javascript.html b/layouts/partials/javascript.html
index 7b5f3a093..20ab5973c 100644
--- a/layouts/partials/javascript.html
+++ b/layouts/partials/javascript.html
@@ -13,3 +13,12 @@
         <script src="{{ $val }}"></script>
     {{ end }}
 {{ end }}
+
+{{- if .Site.Params.enableServiceWorker }}
+    <script>
+        if('serviceWorker' in navigator) {
+            navigator.serviceWorker
+                .register('/sw.js', { scope: '/' });
+        }
+    </script>
+{{- end}}
diff --git a/static/sw.js b/static/sw.js
new file mode 100644
index 000000000..70c9b5dce
--- /dev/null
+++ b/static/sw.js
@@ -0,0 +1 @@
+self.addEventListener('install',function(event){var indexPage=new Request('index.html');event.waitUntil(fetch(indexPage).then(function(response){return caches.open('pwabuilder-offline').then(function(cache){return cache.put(indexPage,response)})}))});self.addEventListener('fetch',function(event){var updateCache=function(request){return caches.open('pwabuilder-offline').then(function(cache){return fetch(request).then(function(response){return cache.put(request,response)})})};event.waitUntil(updateCache(event.request));event.respondWith(fetch(event.request).catch(function(error){return caches.open('pwabuilder-offline').then(function(cache){return cache.match(event.request).then(function(matching){var report=!matching||matching.status==404?Promise.reject('no-match'):matching;return report})})}))})
\ No newline at end of file