import { readMixSessions, saveMixSession, type MixSpec } from "@/lib/mix";

export const dynamic = "force-dynamic";

// Four numbers per pair of files, remembered.
//
// Re-deriving a handover by ear is the cost this whole bench exists to remove;
// re-deriving it because a tab was closed would be the same cost with none of
// the excuse.
export async function GET() {
  return Response.json(await readMixSessions(), { headers: { "cache-control": "no-store" } });
}

export async function PUT(request: Request) {
  let body: Partial<MixSpec>;
  try {
    body = (await request.json()) as Partial<MixSpec>;
  } catch {
    return Response.json({ error: "bad json" }, { status: 400 });
  }
  try {
    return Response.json(await saveMixSession(body));
  } catch (err) {
    return Response.json({ error: String((err as Error)?.message ?? err) }, { status: 400 });
  }
}