merge: Add delay and retry to Page's embedded note loading (!1072)

View MR for information: https://activitypub.software/TransFem-org/Sharkey/-/merge_requests/1072

Closes #853

Approved-by: Hazelnoot <acomputerdog@gmail.com>
Approved-by: dakkar <dakkar@thenautilus.net>

packages/frontend-shared/js/retry-on-throttled.ts

@@ -0,0 +1,31 @@
+/*
+ * SPDX-FileCopyrightText: outvi and other Sharkey contributors
+ * SPDX-License-Identifier: AGPL-3.0-only
+*/
+
+async function sleep(ms: number): Promise<void> {
+	return new Promise((resolve) => {
+		window.setTimeout(() => {
+			resolve();
+		}, ms);
+	});
+}
+
+export async function retryOnThrottled<T>(f: () => Promise<T>, retryCount = 5): Promise<T> {
+  let lastError;
+  for (let i = 0; i < Math.min(retryCount, 1); i++) {
+	try {
+	  return await f();
+	} catch (err: any) {
+	  // RATE_LIMIT_EXCEEDED
+	  if (typeof err === 'object' && err?.id === 'd5826d14-3982-4d2e-8011-b9e9f02499ef') {
+		lastError = err;
+		await sleep(err?.info?.fullResetMs ?? 1000);
+	  } else {
+		throw err;
+	  }
+	}
+  }
+
+  throw lastError;
+}