feat: pwa

2025-03-17 07:17:42 -04:00 · 2025-03-17 07:17:42 -04:00 · 0e48424f60
commit 0e48424f60
parent 00d1c6790c
4 changed files with 97 additions and 0 deletions
--- a/client/src/app.html
+++ b/client/src/app.html
@ -3,6 +3,7 @@
 	<head>
 		<meta charset="utf-8" />
 		<link rel="icon" href="%sveltekit.assets%/favicon.png" />
+		<link rel="manifest" href="/manifest.json" />
 		<meta name="viewport" content="width=device-width, initial-scale=1" />
 		<title>TrevStack</title>
 		%sveltekit.head%
--- a/client/src/service-worker.js
+++ b/client/src/service-worker.js
@ -0,0 +1,80 @@
+/// <reference types="@sveltejs/kit" />
+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());
+});
+
+self.addEventListener('fetch', (event) => {
+    // ignore POST requests etc
+    if (event.request.method !== 'GET') return;
+
+    async function respond() {
+        const url = new URL(event.request.url);
+        const cache = await caches.open(CACHE);
+
+        // `build`/`files` can always be served from the cache
+        if (ASSETS.includes(url.pathname)) {
+            const response = await cache.match(url.pathname);
+
+            if (response) {
+                return response;
+            }
+        }
+
+        // for everything else, try the network first, but
+        // fall back to the cache if we're offline
+        try {
+            const response = await fetch(event.request);
+
+            // if we're offline, fetch can return a value that is not a Response
+            // instead of throwing - and we can't pass this non-Response to respondWith
+            if (!(response instanceof Response)) {
+                throw new Error('invalid response from fetch');
+            }
+
+            if (response.status === 200) {
+                cache.put(event.request, response.clone());
+            }
+
+            return response;
+        } catch (err) {
+            const response = await cache.match(event.request);
+
+            if (response) {
+                return response;
+            }
+
+            // if there's no cache, then just error out
+            // as there is nothing we can do to respond to this request
+            throw err;
+        }
+    }
+
+    event.respondWith(respond());
+});
--- a/client/static/icon.png
+++ b/client/static/icon.png
--- a/client/static/manifest.json
+++ b/client/static/manifest.json
@ -0,0 +1,16 @@
+{
+    "name": "TrevStack",
+    "description": "Template",
+    "short_name": "tstack",
+    "display": "standalone",
+    "start_url": "/",
+    "background_color": "#181825",
+    "theme_color": "#89dceb",
+    "icons": [
+        {
+            "src": "icon.png",
+            "sizes": "512x512",
+            "type": "image/png"
+        }
+    ]
+}