129 lines
3.6 KiB
JavaScript
129 lines
3.6 KiB
JavaScript
/// <reference lib="webworker" />
|
|
|
|
const CACHE_NAME = "capakraken-v2";
|
|
const STATIC_EXTENSIONS = /\.(js|css|png|jpg|jpeg|svg|gif|ico|woff2?|ttf|eot)$/;
|
|
|
|
// Offline fallback page (simple inline HTML)
|
|
const OFFLINE_HTML = `<!DOCTYPE html>
|
|
<html lang="en">
|
|
<head>
|
|
<meta charset="utf-8" />
|
|
<meta name="viewport" content="width=device-width, initial-scale=1" />
|
|
<title>CapaKraken - Offline</title>
|
|
<style>
|
|
* { margin: 0; padding: 0; box-sizing: border-box; }
|
|
body {
|
|
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
|
|
display: flex; align-items: center; justify-content: center;
|
|
min-height: 100vh; background: #f8fafc; color: #334155;
|
|
}
|
|
.container { text-align: center; padding: 2rem; }
|
|
h1 { font-size: 1.5rem; margin-bottom: 0.75rem; color: #0284c7; }
|
|
p { font-size: 1rem; margin-bottom: 1.5rem; color: #64748b; }
|
|
button {
|
|
padding: 0.625rem 1.5rem; border: none; border-radius: 0.5rem;
|
|
background: #0284c7; color: white; font-size: 0.875rem;
|
|
cursor: pointer; transition: background 0.2s;
|
|
}
|
|
button:hover { background: #0369a1; }
|
|
</style>
|
|
</head>
|
|
<body>
|
|
<div class="container">
|
|
<h1>You are offline</h1>
|
|
<p>CapaKraken requires an internet connection. Please check your network and try again.</p>
|
|
<button onclick="location.reload()">Retry</button>
|
|
</div>
|
|
</body>
|
|
</html>`;
|
|
|
|
// Install: pre-cache the offline fallback
|
|
self.addEventListener("install", (event) => {
|
|
event.waitUntil(
|
|
caches.open(CACHE_NAME).then((cache) => {
|
|
return cache.put(
|
|
new Request("/_offline"),
|
|
new Response(OFFLINE_HTML, {
|
|
headers: { "Content-Type": "text/html; charset=utf-8" },
|
|
})
|
|
);
|
|
})
|
|
);
|
|
// Activate immediately
|
|
self.skipWaiting();
|
|
});
|
|
|
|
// Activate: clean up old caches
|
|
self.addEventListener("activate", (event) => {
|
|
event.waitUntil(
|
|
caches.keys().then((keys) =>
|
|
Promise.all(
|
|
keys
|
|
.filter((key) => key !== CACHE_NAME)
|
|
.map((key) => caches.delete(key))
|
|
)
|
|
)
|
|
);
|
|
// Take control of all clients immediately
|
|
self.clients.claim();
|
|
});
|
|
|
|
// Fetch: strategy depends on request type
|
|
self.addEventListener("fetch", (event) => {
|
|
const { request } = event;
|
|
const url = new URL(request.url);
|
|
|
|
// Skip non-GET requests
|
|
if (request.method !== "GET") return;
|
|
|
|
// Skip chrome-extension, ws, etc.
|
|
if (!url.protocol.startsWith("http")) return;
|
|
|
|
// API calls and tRPC: network-first
|
|
if (url.pathname.startsWith("/api/")) {
|
|
event.respondWith(
|
|
fetch(request).catch(() => {
|
|
return new Response(
|
|
JSON.stringify({ error: "offline" }),
|
|
{
|
|
status: 503,
|
|
headers: { "Content-Type": "application/json" },
|
|
}
|
|
);
|
|
})
|
|
);
|
|
return;
|
|
}
|
|
|
|
// Static assets: cache-first
|
|
if (STATIC_EXTENSIONS.test(url.pathname) || url.pathname.startsWith("/_next/static/")) {
|
|
event.respondWith(
|
|
caches.match(request).then((cached) => {
|
|
if (cached) return cached;
|
|
return fetch(request).then((response) => {
|
|
// Only cache successful responses
|
|
if (response.ok) {
|
|
const clone = response.clone();
|
|
caches.open(CACHE_NAME).then((cache) => cache.put(request, clone));
|
|
}
|
|
return response;
|
|
});
|
|
})
|
|
);
|
|
return;
|
|
}
|
|
|
|
// Navigation requests: network-first with offline fallback
|
|
if (request.mode === "navigate") {
|
|
event.respondWith(
|
|
fetch(request).catch(() => caches.match("/_offline"))
|
|
);
|
|
return;
|
|
}
|
|
|
|
// Everything else: network-first, silent fail
|
|
event.respondWith(
|
|
fetch(request).catch(() => caches.match(request))
|
|
);
|
|
});
|