From c68ebc39096d93867058f011b4e6313f53128819 Mon Sep 17 00:00:00 2001
From: Kit La Touche <kit@transneptune.net>
Date: Tue, 5 Nov 2024 22:22:22 -0500
Subject: Start to make this a PWA

---
 ui/service-worker.js | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 ui/service-worker.js

(limited to 'ui/service-worker.js')

diff --git a/ui/service-worker.js b/ui/service-worker.js
new file mode 100644
index 0000000..e29fab3
--- /dev/null
+++ b/ui/service-worker.js
@@ -0,0 +1,35 @@
+/// <reference types="@sveltejs/kit" />
+/// <reference no-default-lib="true"/>
+/// <reference lib="esnext" />
+/// <reference lib="webworker" />
+
+import { build, files, version } from '$service-worker';
+
+// Create a unique cache name for this deployment
+const CACHE = `cache-${version}`;
+
+const ASSETS = [
+	...build, // the app itself
+	...files  // everything in `static`
+];
+
+self.addEventListener('install', (event) => {
+	// Create a new cache and add all files to it
+	async function addFilesToCache() {
+		const cache = await caches.open(CACHE);
+		await cache.addAll(ASSETS);
+	}
+
+	event.waitUntil(addFilesToCache());
+});
+
+self.addEventListener('activate', (event) => {
+	// Remove previous cached data from disk
+	async function deleteOldCaches() {
+		for (const key of await caches.keys()) {
+			if (key !== CACHE) await caches.delete(key);
+		}
+	}
+
+	event.waitUntil(deleteOldCaches());
+});
-- 
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