Added offline.html and update sw.js

2024-11-21 17:00:04 +01:00 · 2024-08-21 00:02:53 -04:00 · 2024-08-21 00:02:53 -04:00 · 4347e24199
commit 4347e24199
parent 3143951e95
2 changed files with 80 additions and 21 deletions
--- a/offline.html
+++ b/offline.html
@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Offline - MTG Card CSV Generator</title>
+    <link rel="stylesheet" href="styles.css">
+    <link href="https://fonts.googleapis.com/css2?family=Sorts+Mill+Goudy&display=swap" rel="stylesheet">
+    <link rel="icon" href="icon.png" type="image/png">
+    <link href="//cdn.jsdelivr.net/npm/mana-font@latest/css/mana.css" rel="stylesheet" type="text/css" />
+</head>
+<body>
+    <div class="container">
+        <h1>You're Offline</h1>
+        <p>It looks like you are not connected to the internet. Please check your connection and try again.</p>
+        <p>While offline, you can still browse previously loaded content, but some features might not work as expected.</p>
+        <p>
+            <a href="index.html">Go back to the main page</a>
+        </p>
+    </div>
+
+    <footer>
+        <p>
+            <a href="https://github.com/cfultz/mtgcsv" target="_blank">View on GitHub</a> | 
+            This app is not affiliated with Wizards of the Coast or Hasbro. All rights and trademarks are owned by their respective owners.
+        </p>
+    </footer>
+</body>
+</html>
--- a/sw.js
+++ b/sw.js
@ -1,24 +1,54 @@
-self.addEventListener('install', (event) => {
-    event.waitUntil(
-        caches.open('mtg-csv-generator-v1').then((cache) => {
-            return cache.addAll([
-                '/',
-                '/index.html',
-                '/styles.css',
-                '/app.js',
-                '/manifest.json',
-                '/icon.png',
-                '/cash-money.mp3',
-                '/randomWords.js'
-            ]);
-        })
-    );
+// This is the service worker with the combined offline experience (Offline page + Offline copy of pages)
+
+const CACHE = "pwabuilder-offline-page";
+
+importScripts('https://storage.googleapis.com/workbox-cdn/releases/5.1.2/workbox-sw.js');
+
+// TODO: replace the following with the correct offline fallback page i.e.: const offlineFallbackPage = "offline.html";
+const offlineFallbackPage = "ToDo-replace-this-name.html";
+
+self.addEventListener("message", (event) => {
+  if (event.data && event.data.type === "SKIP_WAITING") {
+    self.skipWaiting();
+  }
 });

-self.addEventListener('fetch', (event) => {
-    event.respondWith(
-        caches.match(event.request).then((response) => {
-            return response || fetch(event.request);
-        })
-    );
+self.addEventListener('install', async (event) => {
+  event.waitUntil(
+    caches.open(CACHE)
+      .then((cache) => cache.add(offlineFallbackPage))
+  );
 });
+
+if (workbox.navigationPreload.isSupported()) {
+  workbox.navigationPreload.enable();
+}
+
+workbox.routing.registerRoute(
+  new RegExp('/*'),
+  new workbox.strategies.StaleWhileRevalidate({
+    cacheName: CACHE
+  })
+);
+
+self.addEventListener('fetch', (event) => {
+  if (event.request.mode === 'navigate') {
+    event.respondWith((async () => {
+      try {
+        const preloadResp = await event.preloadResponse;
+
+        if (preloadResp) {
+          return preloadResp;
+        }
+
+        const networkResp = await fetch(event.request);
+        return networkResp;
+      } catch (error) {
+
+        const cache = await caches.open(CACHE);
+        const cachedResp = await cache.match(offlineFallbackPage);
+        return cachedResp;
+      }
+    })());
+  }
+});