/**
 * Hybrid stack status from the local indexer.
 */

const INDEXER =
  process.env.NEXT_PUBLIC_INDEXER_URL?.trim() || "http://127.0.0.1:4091";

export type RpcProbe = {
  url: string;
  ok: boolean;
  chainId?: number;
  blockNumber?: number;
  error?: string;
};

export type HybridStatus = {
  ok: boolean;
  offline?: boolean;
  service?: string;
  mode?: string;
  privateLayer?: RpcProbe;
  publicLayer?: RpcProbe;
  sim?: {
    privateHeight: number;
    txCount: number;
    blockCount: number;
    pendingAnchors: number;
    postedAnchors: number;
  };
  note?: string;
};

export async function fetchHybridStatus(): Promise<HybridStatus> {
  try {
    const res = await fetch(`${INDEXER}/v1/hybrid`, {
      next: { revalidate: 0 },
      signal: AbortSignal.timeout(2000),
    });
    if (!res.ok) return { ok: false, offline: true, note: "Indexer returned an error." };
    return (await res.json()) as HybridStatus;
  } catch {
    return {
      ok: false,
      offline: true,
      note: "Indexer is not running. Start with: bun run dev:indexer",
    };
  }
}