refactor(agent): isolate node filesystem session dependencies

2026-05-15 00:53:33 +02:00
parent 0b54c87e24
commit 80c918c247
25 changed files with 340 additions and 257 deletions
@@ -0,0 +1,36 @@
+import type { SessionMetadata, SessionStorage, SessionTreeEntry } from "../types.js";
+import { Session } from "./session.js";
+import { uuidv7 } from "./uuid.js";
+
+export function createSessionId(): string {
+	return uuidv7();
+}
+
+export function createTimestamp(): string {
+	return new Date().toISOString();
+}
+
+export function toSession<TMetadata extends SessionMetadata>(storage: SessionStorage<TMetadata>): Session<TMetadata> {
+	return new Session(storage);
+}
+
+export async function getEntriesToFork(
+	storage: SessionStorage,
+	options: { entryId?: string; position?: "before" | "at" },
+): Promise<SessionTreeEntry[]> {
+	if (!options.entryId) return storage.getEntries();
+	const target = await storage.getEntry(options.entryId);
+	if (!target) {
+		throw new Error(`Entry ${options.entryId} not found`);
+	}
+	let effectiveLeafId: string | null;
+	if ((options.position ?? "before") === "at") {
+		effectiveLeafId = target.id;
+	} else {
+		if (target.type !== "message" || target.message.role !== "user") {
+			throw new Error(`Entry ${options.entryId} is not a user message`);
+		}
+		effectiveLeafId = target.parentId;
+	}
+	return storage.getPathToRoot(effectiveLeafId);
+}