refactor(memory): share sync indexing helper

src/memory/sync-index.ts

@@ -0,0 +1,39 @@
+import type { DatabaseSync } from "node:sqlite";
+
+type SyncProgress = {
+  completed: number;
+  total: number;
+  report: (update: { completed: number; total: number; label?: string }) => void;
+};
+
+function tickProgress(progress: SyncProgress | undefined): void {
+  if (!progress) {
+    return;
+  }
+  progress.completed += 1;
+  progress.report({
+    completed: progress.completed,
+    total: progress.total,
+  });
+}
+
+export async function indexFileEntryIfChanged<
+  TEntry extends { path: string; hash: string },
+>(params: {
+  db: DatabaseSync;
+  source: string;
+  needsFullReindex: boolean;
+  entry: TEntry;
+  indexFile: (entry: TEntry) => Promise<void>;
+  progress?: SyncProgress;
+}): Promise<void> {
+  const record = params.db
+    .prepare(`SELECT hash FROM files WHERE path = ? AND source = ?`)
+    .get(params.entry.path, params.source) as { hash: string } | undefined;
+  if (!params.needsFullReindex && record?.hash === params.entry.hash) {
+    tickProgress(params.progress);
+    return;
+  }
+  await params.indexFile(params.entry);
+  tickProgress(params.progress);
+}