feat: pwa

12 files changed, 131 insertions, 0 deletions

diff --git a/src/app.html b/src/app.html
index fb37d49a..627beba8 100644
--- a/src/app.html
+++ b/src/app.html
@@ -22,6 +22,7 @@
 		<link rel="stylesheet" type="text/css" href="https://skybox.sh/css/risotto.css" />
 		<!-- <link rel="stylesheet" type="text/css" href="https://skybox.sh/css/custom.css"> -->
 		<link rel="shortcut icon" type="image/x-icon" href="%sveltekit.assets%/favicon.ico" />
+		<link rel="manifest" href="/manifest.json" />
 
 		%sveltekit.head%
 	</head>
diff --git a/src/service-worker.ts b/src/service-worker.ts
new file mode 100644
index 00000000..4c15bb6a
--- /dev/null
+++ b/src/service-worker.ts
@@ -0,0 +1,80 @@
+/// <reference lib="webworker" />
+
+import { build, files, version } from '$service-worker';
+
+const worker = self as unknown as ServiceWorkerGlobalScope;
+const FILES = `cache${version}`;
+
+// `build` is an array of all the files generated by the bundler,
+// `files` is an array of everything in the `static` directory
+const to_cache = build.concat(files);
+const staticAssets = new Set(to_cache);
+
+worker.addEventListener('install', (event) => {
+	event.waitUntil(
+		caches
+			.open(FILES)
+			.then((cache) => cache.addAll(to_cache))
+			.then(() => {
+				worker.skipWaiting();
+			})
+	);
+});
+
+worker.addEventListener('activate', (event) => {
+	event.waitUntil(
+		caches.keys().then(async (keys) => {
+			// delete old caches
+			for (const key of keys) {
+				if (key !== FILES) await caches.delete(key);
+			}
+
+			worker.clients.claim();
+		})
+	);
+});
+
+/**
+ * Fetch the asset from the network and store it in the cache.
+ * Fall back to the cache if the user is offline.
+ */
+async function fetchAndCache(request: Request) {
+	const cache = await caches.open(`offline${version}`);
+
+	try {
+		const response = await fetch(request);
+		cache.put(request, response.clone());
+		return response;
+	} catch (err) {
+		const response = await cache.match(request);
+		if (response) return response;
+
+		throw err;
+	}
+}
+
+worker.addEventListener('fetch', (event) => {
+	if (event.request.method !== 'GET' || event.request.headers.has('range')) return;
+
+	const url = new URL(event.request.url);
+
+	// don't try to handle e.g. data: URIs
+	const isHttp = url.protocol.startsWith('http');
+	const isDevServerRequest =
+		url.hostname === self.location.hostname && url.port !== self.location.port;
+	const isStaticAsset = url.host === self.location.host && staticAssets.has(url.pathname);
+	const skipBecauseUncached = event.request.cache === 'only-if-cached' && !isStaticAsset;
+
+	if (isHttp && !isDevServerRequest && !skipBecauseUncached) {
+		event.respondWith(
+			(async () => {
+				// always serve static files and bundler-generated assets from cache.
+				// if your application has other URLs with data that will never change,
+				// set this variable to true for them and they will only be fetched once.
+				const cachedAsset = isStaticAsset && (await caches.match(event.request));
+
+				return cachedAsset || fetchAndCache(event.request);
+			})()
+		);
+	}
+});
diff --git a/static/favicon-128x128.png b/static/favicon-128x128.png
new file mode 100644
index 00000000..4519906d
--- /dev/null
+++ b/static/favicon-128x128.png
diff --git a/static/favicon-144x144.png b/static/favicon-144x144.png
new file mode 100644
index 00000000..8477e816
--- /dev/null
+++ b/static/favicon-144x144.png
diff --git a/static/favicon-16x16.png b/static/favicon-16x16.png
new file mode 100644
index 00000000..38db0382
--- /dev/null
+++ b/static/favicon-16x16.png
diff --git a/static/favicon-192x192.png b/static/favicon-192x192.png
new file mode 100644
index 00000000..48751ae1
--- /dev/null
+++ b/static/favicon-192x192.png
diff --git a/static/favicon-36x36.png b/static/favicon-36x36.png
new file mode 100644
index 00000000..2c109b9b
--- /dev/null
+++ b/static/favicon-36x36.png
diff --git a/static/favicon-48x48.png b/static/favicon-48x48.png
new file mode 100644
index 00000000..c8a22689
--- /dev/null
+++ b/static/favicon-48x48.png
diff --git a/static/favicon-512x512.png b/static/favicon-512x512.png
new file mode 100644
index 00000000..8a594882
--- /dev/null
+++ b/static/favicon-512x512.png
diff --git a/static/favicon-72x72.png b/static/favicon-72x72.png
new file mode 100644
index 00000000..9cf8e666
--- /dev/null
+++ b/static/favicon-72x72.png
diff --git a/static/favicon-original.png b/static/favicon-original.png
new file mode 100644
index 00000000..f82d3c10
--- /dev/null
+++ b/static/favicon-original.png
diff --git a/static/manifest.json b/static/manifest.json
new file mode 100644
index 00000000..c06e227c
--- /dev/null
+++ b/static/manifest.json
@@ -0,0 +1,50 @@
+{
+	"short_name": "期限",
+	"name": "期限",
+	"start_url": "/",
+	"icons": [
+		{
+			"src": "favicon-512x512.png",
+			"type": "image/png",
+			"sizes": "512x512"
+		},
+		{
+			"src": "favicon-192x192.png",
+			"type": "image/png",
+			"sizes": "192x192"
+		},
+		{
+			"src": "favicon-144x144.png",
+			"type": "image/png",
+			"sizes": "144x144"
+		},
+		{
+			"src": "favicon-128x128.png",
+			"type": "image/png",
+			"sizes": "128x128"
+		},
+		{
+			"src": "favicon-72x72.png",
+			"type": "image/png",
+			"sizes": "72x72"
+		},
+		{
+			"src": "favicon-48x48.png",
+			"type": "image/png",
+			"sizes": "48x48"
+		},
+		{
+			"src": "favicon-36x36.png",
+			"type": "image/png",
+			"sizes": "36x36"
+		},
+		{
+			"src": "favicon-16x16.png",
+			"type": "image/png",
+			"sizes": "16x16"
+		}
+	],
+	"display": "standalone",
+	"scope": "/",
+	"description": "Instantly view which anime & manga on your lists have new episodes/chapters!"
+}