Fix query and API bugs: 403 for non-owners, page bounds, lifecycle filters, cover fallback, race-safe inserts, async album delete

web-player/src/lib/server/pagination.ts

@@ -0,0 +1,22 @@
+/** Largest page size the API accepts (`PageRequest.MaxPageSize` in the backend). */
+export const API_MAX_PAGE_SIZE = 100;
+
+type Page<T> = { items: T[]; hasNextPage: boolean };
+
+/** Loads consecutive pages until the list ends or `maxItems` items were collected. */
+export async function fetchAllPages<T>(
+	loadPage: (pageNumber: number, pageSize: number) => Promise<Page<T> | undefined>,
+	maxItems: number
+): Promise<T[]> {
+	const items: T[] = [];
+
+	for (let pageNumber = 1; items.length < maxItems; pageNumber++) {
+		const page = await loadPage(pageNumber, API_MAX_PAGE_SIZE);
+		if (!page) break;
+
+		items.push(...page.items);
+		if (!page.hasNextPage) break;
+	}
+
+	return items.slice(0, maxItems);
+}