Initial commit

app/utils/download.ts

@@ -0,0 +1,30 @@
+export const TRANSIENT_DOWNLOAD_STATUSES = [
+  408, 425, 429, 500, 502, 503, 504,
+] as const;
+export function leaseStorageKey(id: string): string {
+  return `quickdrop-lease:${id}`;
+}
+export async function retryTransient(
+  operation: () => Promise<Response>,
+  attempts = 5,
+): Promise<Response> {
+  for (let attempt = 0; ; attempt++) {
+    try {
+      const response = await operation();
+      if (
+        response.ok ||
+        !TRANSIENT_DOWNLOAD_STATUSES.includes(response.status as never) ||
+        attempt >= attempts - 1
+      )
+        return response;
+    } catch (error) {
+      if (attempt >= attempts - 1) throw error;
+    }
+    await new Promise((resolve) =>
+      setTimeout(
+        resolve,
+        Math.round(500 * 2 ** attempt * (0.8 + Math.random() * 0.4)),
+      ),
+    );
+  }
+}