Handle WebTorrent fallback without service worker

js/utils/serviceWorkerFallbackMessages.js

@@ -0,0 +1,58 @@
+// js/utils/serviceWorkerFallbackMessages.js
+
+const BASE_STATUS_MESSAGE = "Streaming via WebTorrent";
+
+function normalizeMessage(error) {
+  if (!error) {
+    return "";
+  }
+  if (error instanceof Error && typeof error.message === "string") {
+    return error.message;
+  }
+  if (typeof error === "string") {
+    return error;
+  }
+  try {
+    return String(error);
+  } catch (_err) {
+    return "";
+  }
+}
+
+export function buildServiceWorkerFallbackStatus(error) {
+  const rawMessage = normalizeMessage(error);
+  const normalized = rawMessage.toLowerCase();
+
+  if (!normalized) {
+    return `${BASE_STATUS_MESSAGE} (service worker unavailable)`;
+  }
+
+  if (normalized.includes("https or localhost required")) {
+    return `${BASE_STATUS_MESSAGE} (serve over HTTPS to enable service worker)`;
+  }
+
+  if (normalized.includes("not supported") || normalized.includes("disabled")) {
+    return `${BASE_STATUS_MESSAGE} (browser disabled service workers)`;
+  }
+
+  if (normalized.includes("brave shield")) {
+    return `${BASE_STATUS_MESSAGE} (Brave Shields blocked the service worker)`;
+  }
+
+  if (
+    normalized.includes("failed to register") ||
+    normalized.includes("failed to fetch") ||
+    normalized.includes("blocked") ||
+    normalized.includes("net::err_blocked_by_client")
+  ) {
+    return `${BASE_STATUS_MESSAGE} (service worker blocked by browser or extension)`;
+  }
+
+  if (normalized.includes("controller claim timeout")) {
+    return `${BASE_STATUS_MESSAGE} (waiting for service worker control)`;
+  }
+
+  return `${BASE_STATUS_MESSAGE} (service worker unavailable)`;
+}
+
+export default buildServiceWorkerFallbackStatus;