import { decisionCounts, indexHealth, listFolders, listProjects } from "@/lib/projects";

export const dynamic = "force-dynamic";

// Every project, as JSON. The index page's data, for an agent or a script.
//
// `x-index` reports how much of that came from the persistent index and how much
// was read fresh. It is the only place the index is observable at all, which is
// the intent: a stale index self-heals on the next load and the user sees
// nothing but latency, so the health has to be surfaced deliberately or not at
// all. The specs assert on it.
export async function GET(request: Request) {
  const url = new URL(request.url);
  const projects = await listProjects();
  const health = indexHealth();

  const counts = url.searchParams.get("decisions") === "1" ? await decisionCounts() : null;
  const folders = [...(await listFolders()).values()];

  return Response.json(
    {
      projects: counts
        ? projects.map((p) => ({ ...p, decisions: counts.get(p.id) ?? null }))
        : projects,
      folders,
    },
    {
      headers: {
        "cache-control": "no-store",
        "x-index": health.ok ? `${health.fresh}/${health.total} fresh` : "off",
      },
    },
  );
}