// Whether the swarm has no agent named `ruth`, from `GET /api/agents/status`.
// The start page's setup assistant shows only then. It is a nudge, so
// anything short of a clear "ruth is not in the roster" answers `false`: a
// failed request or an unreadable list must not tell the operator to set
// up an agent that may already exist.

type Fetch = (url: string) => Promise<{
  ok: boolean;
  json: () => Promise<unknown>;
}>;

export async function ruthIsMissing(fetchImpl: Fetch): Promise<boolean> {
  try {
    const r = await fetchImpl("/api/agents/status");
    if (!r.ok) return false;
    const rows = await r.json();
    if (!Array.isArray(rows)) return false;
    return !rows.some((row) => (row as { name?: unknown }).name === "ruth");
  } catch {
    return false;
  }
}