fix and update

apps/frontend/lib/resilient-media-fetch.ts

@@ -0,0 +1,60 @@
+import { ensureApiGatewayReady, invalidateApiGatewayReady } from '@/lib/api';
+
+const GATEWAY_RETRY_STATUS = new Set([502, 503, 504]);
+const MEDIA_FETCH_MAX_ATTEMPTS = 8;
+const MEDIA_SLOW_LOAD_WARN_MS = 8_000;
+
+function sleep(ms: number): Promise<void> {
+  return new Promise((resolve) => setTimeout(resolve, ms));
+}
+
+function warnSlowMediaLoad(label: string, startedAt: number, error: unknown) {
+  if (Date.now() - startedAt < MEDIA_SLOW_LOAD_WARN_MS) return;
+  const detail = error instanceof Error ? error.message : 'неизвестная ошибка';
+  console.warn(`[media] ${label}: не удалось загрузить за ${Math.round((Date.now() - startedAt) / 1000)} с (${detail})`);
+}
+
+export async function fetchMediaBlobWithRetry(
+  accessUrl: string,
+  token: string,
+  options?: { mimeType?: string; label?: string }
+): Promise<Blob> {
+  const startedAt = Date.now();
+  const label = options?.label ?? 'изображение';
+  let lastError: unknown;
+
+  for (let attempt = 0; attempt < MEDIA_FETCH_MAX_ATTEMPTS; attempt += 1) {
+    try {
+      await ensureApiGatewayReady();
+      const response = await fetch(accessUrl, {
+        headers: { Authorization: `Bearer ${token}` },
+        cache: 'no-store'
+      });
+
+      if (GATEWAY_RETRY_STATUS.has(response.status) && attempt + 1 < MEDIA_FETCH_MAX_ATTEMPTS) {
+        invalidateApiGatewayReady();
+        await sleep(350 * (attempt + 1));
+        continue;
+      }
+
+      if (!response.ok) {
+        throw new Error(`HTTP ${response.status}`);
+      }
+
+      const raw = await response.blob();
+      const mimeType = options?.mimeType;
+      if (mimeType && (!raw.type || raw.type === 'application/octet-stream')) {
+        return new Blob([await raw.arrayBuffer()], { type: mimeType });
+      }
+      return raw;
+    } catch (error) {
+      lastError = error;
+      if (attempt + 1 < MEDIA_FETCH_MAX_ATTEMPTS) {
+        await sleep(350 * (attempt + 1));
+      }
+    }
+  }
+
+  warnSlowMediaLoad(label, startedAt, lastError);
+  throw lastError instanceof Error ? lastError : new Error('Не удалось загрузить файл');
+}