learnharness/app/api/chats/[id]/route.ts

import { getChat, isTurnRunning } from "@/src/server";

export async function GET(_req: Request, { params }: { params: Promise<{ id: string }> }) {
	const { id } = await params;
	const chat = getChat(id);
	if (!chat) return Response.json({ error: "Not found" }, { status: 404 });
	// turnInFlight lets a returning client re-attach to a running turn
	// (chat-handler write-ahead + registry — see src/server/turn-liveness.ts).
	return Response.json({ ...chat, turnInFlight: isTurnRunning(id) });
}