mc-dashboard/components/OfflineBanner.tsx
hurkicorgi 359a12ef9d SSE events bridge, PWA service worker, offline banner, lazy admin tabs
- New /api/events SSE endpoint (authed): pushes status every 5s and chat
  on log-file mtime change (~1.5s poll). Heartbeat every 15s, hard-caps
  each stream at 10min so the browser gets a clean auth refresh on
  reconnect. Auto-aborts on client disconnect.
- Factored shared helpers out of the existing routes:
  - lib/server-status.ts (probeStatus, reused by /api/status + SSE)
  - lib/chat-log.ts (parseLogLine, readChatMessages, logMtime, reused by
    /api/chat + SSE)
- EventsBridge client (mounted in Providers) opens one EventSource per
  authed session and writes live data into the TanStack Query cache for
  ["status"] and ["chat"] — no refactor needed in consuming components,
  they keep reading their usual query keys.
- Now that SSE pushes updates, polling intervals bumped: StatusCard and
  ServerControls 10s -> 60s, ChatBridge 5s -> 30s. SSE handles realtime,
  polling is safety fallback.
- OfflineBanner: sticky amber bar when navigator.onLine flips false.
- PWA: minimal public/sw.js with shell + asset cache (network-first for
  HTML, stale-while-revalidate for static assets, never touches /api/*
  or text/event-stream). ServiceWorkerRegister client registers it in
  production only.
- AdminTabs now uses next/dynamic with skeleton fallbacks for Players /
  Chat / Mods / Backups / Logs, keeping initial /admin bundle smaller.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-04-13 05:48:00 -06:00

32 lines
914 B
TypeScript

"use client";
import { useEffect, useState } from "react";
export function OfflineBanner() {
const [online, setOnline] = useState(true);
useEffect(() => {
if (typeof navigator === "undefined") return;
setOnline(navigator.onLine);
const on = () => setOnline(true);
const off = () => setOnline(false);
window.addEventListener("online", on);
window.addEventListener("offline", off);
return () => {
window.removeEventListener("online", on);
window.removeEventListener("offline", off);
};
}, []);
if (online) return null;
return (
<div
role="status"
aria-live="polite"
className="sticky top-0 z-30 w-full bg-amber-500/20 border-b border-amber-500/30 text-amber-200 text-xs sm:text-sm px-3 py-1.5 text-center backdrop-blur"
>
You&apos;re offline showing cached data. Live updates will resume automatically.
</div>
);
}