fix(nbstore): adjust indexer logic (#11355)

packages/common/nbstore/src/sync/indexer/crawler.ts

@@ -452,10 +452,13 @@ export async function crawlingDocData({
   rootYDoc: YDoc;
   spaceId: string;
   docId: string;
-}): Promise<{
-  blocks: IndexerDocument<'block'>[];
-  preview?: string;
-}> {
+}): Promise<
+  | {
+      blocks: IndexerDocument<'block'>[];
+      preview?: string;
+    }
+  | undefined
+> {
   let docTitle = '';
   let summaryLenNeeded = 1000;
   let summary = '';
@@ -482,7 +485,7 @@ export async function crawlingDocData({
   }
 
   if (blocks.size === 0) {
-    return { blocks: [] };
+    return undefined;
   }
 
   // find the nearest block that satisfies the predicate
@@ -514,7 +517,7 @@ export async function crawlingDocData({
   }
 
   if (!rootBlockId) {
-    return { blocks: [] };
+    return undefined;
   }
 
   const queue: { parent?: string; id: string }[] = [{ id: rootBlockId }];

packages/common/nbstore/src/sync/indexer/index.ts

@@ -381,6 +381,10 @@ export class IndexerSyncImpl implements IndexerSync {
               spaceId: this.status.rootDocId,
               docId,
             });
+            if (!result) {
+              // doc is empty without root block, just skip
+              continue;
+            }
             blocks = result.blocks;
             preview = result.preview;
           } catch (error) {

packages/frontend/core/src/components/page-list/page-content-preview.tsx

@@ -1,4 +1,5 @@
 import { DocsSearchService } from '@affine/core/modules/docs-search';
+import { WorkspaceService } from '@affine/core/modules/workspace';
 import { LiveData, useLiveData, useService } from '@toeverything/infra';
 import { type ReactNode, useEffect, useMemo } from 'react';
 
@@ -14,6 +15,7 @@ const PagePreviewInner = ({
   fallback,
 }: PagePreviewProps) => {
   const docSummary = useService(DocsSearchService);
+  const workspaceService = useService(WorkspaceService);
   const summary = useLiveData(
     useMemo(
       () => LiveData.from(docSummary.watchDocSummary(pageId), null),
@@ -26,6 +28,11 @@ const PagePreviewInner = ({
     return undo;
   }, [docSummary, pageId]);
 
+  useEffect(() => {
+    const undo = workspaceService.workspace.engine.doc.addPriority(pageId, 10);
+    return undo;
+  }, [workspaceService, pageId]);
+
   const res =
     summary === null ? fallback : summary === '' ? emptyFallback : summary;
   return res;