refactor!: next generation AFFiNE code structure (#1176)

apps/web/src/hooks/use-blocksuite-workspace-helper.ts

@@ -0,0 +1,29 @@
+import { assertExists } from '@blocksuite/store';
+import { useMemo } from 'react';
+
+import { BlockSuiteWorkspace } from '../shared';
+
+export function useBlockSuiteWorkspaceHelper(
+  blockSuiteWorkspace: BlockSuiteWorkspace | null
+) {
+  return useMemo(
+    () => ({
+      createPage: (pageId: string, title?: string): Promise<string> => {
+        return new Promise(resolve => {
+          assertExists(blockSuiteWorkspace);
+          const dispose = blockSuiteWorkspace.signals.pageAdded.on(id => {
+            if (id === pageId) {
+              dispose.dispose();
+              // Fixme: https://github.com/toeverything/blocksuite/issues/1350
+              setTimeout(() => {
+                resolve(pageId);
+              }, 0);
+            }
+          });
+          blockSuiteWorkspace.createPage(pageId);
+        });
+      },
+    }),
+    [blockSuiteWorkspace]
+  );
+}