// Adapter: maps the page-side "record + messages" shape scraped from
// Alibaba's CRM pages to the backend `/api/ingest` zod PayloadSchema.

// Trim undefined/empty/null to null for optional string fields.
const s = v => (v == null || v === '') ? null : v;

// Coerce numeric strings (e.g. "39") to number; otherwise null.
const n = v => {
  if (v == null || v === '') return null;
  const x = Number(v);
  return Number.isFinite(x) ? x : null;
};

// 只接受标准 ISO(YYYY-MM-DDTHH:...);非 ISO(列表页 "11:58"/"2026-7-8")跳过 → 兜底当前时间
// 注:取消聊天时无 gmtCreate,列表时间为非 ISO,这里保证 createTime/updateTime 始终合法 ISO。
// 准确时间待抓聊天时由 gmtCreate 通过 upsert 覆盖。
const isIso = v => typeof v === 'string' && /^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}/.test(v);
// 解析 alibaba 列表的非 ISO 时间:
//   "2026-7-1"(YYYY-M-D,创建时间)→ 当天 00:00(本地)
//   "13:58"(HH:mm,今天的更新时间)→ 今天该时分(本地)
const parseListTime = v => {
  if (v == null || v === '') return null;
  const s = String(v).trim();
  const d = s.match(/^(\d{4})-(\d{1,2})-(\d{1,2})$/);
  if (d) return new Date(Number(d[1]), Number(d[2]) - 1, Number(d[3])).toISOString();
  const hm = s.match(/^(\d{1,2}):(\d{2})$/);
  if (hm) {
    const n = new Date();
    return new Date(n.getFullYear(), n.getMonth(), n.getDate(), Number(hm[1]), Number(hm[2])).toISOString();
  }
  return null;
};
const isoFallback = (...vals) => {
  for (const v of vals) {
    if (isIso(v)) return v;
    const p = parseListTime(v);
    if (p) return p;
  }
  return new Date(Date.now()).toISOString();
};

export function buildIngestPayload(record, messages) {
  // 阶段1:允许 messages 为空（先走通列表+客户+行为,聊天后续补充）
  const msgs = messages || [];
  const iq = record || {};

  const inquiry = {
    inquiryId: String(iq.inquiryId),
    manager: s(iq.manager) || undefined,
    createTime: isoFallback(iq.createTimeFromApi, iq.createTime),
    updateTime: isoFallback(
      iq.updateTime,
      iq.updateTimeFromApi,
      iq.createTimeFromApi,
    ),
    status: s(iq.status) || undefined,
    msgPreview: s(iq.msgPreview) || undefined,
    isFlagged: !!iq.isFlagged,
  };

  const customer = iq.customerId
    ? {
        customerId: String(iq.customerId),
        name: s(iq.detailBuyerName) || s(iq.buyerName),
        country: s(iq.detailCountry) || s(iq.countryCode),
        email: s(iq.email),
        phone: s(iq.phone),
        landline: s(iq.landline),
        businessType: s(iq.businessType),
        salesPlatform: s(iq.salesPlatform),
        website: s(iq.website),
        company: s(iq.company),
        registerTime: s(iq.registerTime),
        avatarUrl: s(iq.detailAvatarUrl) || s(iq.avatarUrl) || undefined,
        buyerTags: s(iq.buyerTags) || undefined,
        buyerFeatures: s(iq.buyerFeatures) || undefined,
        recentInquiryProducts: Array.isArray(iq.recentInquiryProducts) ? iq.recentInquiryProducts : undefined,
        storeInquiryProduct: s(iq.storeInquiryProduct) || undefined,
        storeInquiryQty: s(iq.storeInquiryQty) || undefined,
        storeVisitProducts: Array.isArray(iq.storeVisitProducts) ? iq.storeVisitProducts : undefined,
        behavior: iq.behavior
          ? {
              productViews: n(iq.behavior.productViews),
              validInquiries: n(iq.behavior.validInquiries),
              validRfq: n(iq.behavior.validRFQ),  // detail 用 validRFQ(大写)
              loginDays: n(iq.behavior.loginDays),
              spamInquiries: n(iq.behavior.spamInquiries),
              blacklistCount: n(iq.behavior.blacklistCount),
              topIndustry: s(iq.behavior.topIndustry),
            }
          : undefined,
      }
    : null;

  const out = {
    inquiry,
    customer,
    messages: msgs.map(m => ({
      messageId: String(m.messageId),
      sendTime: m.sendTime,
      sender: s(m.sender) || undefined,
      direction: m.direction,
      content: m.original ?? m.content ?? '',
      translation: s(m.translation) ?? '',
    })),
  };

  return out;
}