import { EXPORT_MASK_POLICIES, type ExportMaskPolicy } from "../constants/export";
import { createError } from "h3";

type MeExportRequestBody = {
  maskPolicy?: unknown;
};

export function parseMeExportRequestBody(body: unknown): { maskPolicy: ExportMaskPolicy } {
  const payload = (body && typeof body === "object" ? body : {}) as MeExportRequestBody;
  const raw = payload.maskPolicy;
  if (raw === undefined || raw === null || raw === "") {
    return { maskPolicy: "masked" };
  }

  if (typeof raw !== "string" || !EXPORT_MASK_POLICIES.includes(raw as ExportMaskPolicy)) {
    throw createError({ statusCode: 400, statusMessage: "maskPolicy 非法，仅支持 masked|raw" });
  }

  return { maskPolicy: raw as ExportMaskPolicy };
}