import { notificationTransaction } from "@/goldMiner/merchant";
import { confirmMerchantTransaction } from "@/goldMiner/legacyPayment";
import { fulfillOrder } from "@/goldMiner/payment";

export default async function (ctx: FunctionContext) {
  try {
    // Some Laf gateways expose rawBody; a parsed body is never used after successful raw verification.
    const input = (ctx.request as any)?.rawBody ?? ctx.rawBody;
    const raw = Buffer.isBuffer(input) ? input.toString("utf8") : typeof input === "string" ? input : JSON.stringify(ctx.body);
    const transaction = notificationTransaction(raw, ctx.headers);
    const order = await confirmMerchantTransaction(transaction, "merchant_notify");
    // Confirmation is durable; timer/login/query can retry entitlement delivery after this acknowledgement.
    try { await fulfillOrder(order.outTradeNo); } catch { console.error("goldMiner merchant entitlement retry", order._id); }
    ctx.response?.status(200);
    return { code: "SUCCESS", message: "成功" };
  } catch {
    ctx.response?.status(500);
    return { code: "FAIL", message: "支付通知验证或保存失败" };
  }
}