import type { QuoteRecord } from "@prisma/client";
import type { AlertType } from "@/modules/alert/types";
import {
  formatQuoteErrorMessage,
  normalizeTechnicalReason,
} from "@/modules/quote/quote-error-messages";

const CARGO_TYPE_ZH: Record<string, string> = {
  general_freight: "普通货物",
  machinery: "机械设备",
  furniture: "家具",
  electronics: "电子产品",
  building_materials: "建材",
  auto_parts: "汽车配件",
  food_nonperishable: "非生鲜食品",
  apparel: "服装",
  other: "其他",
};

function asRecord(value: unknown): Record<string, unknown> | null {
  if (value && typeof value === "object" && !Array.isArray(value)) {
    return value as Record<string, unknown>;
  }
  return null;
}

/** 客户填写的地址（街道/城市/州/邮编） */
export function formatCustomerAddressForAdmin(addr: unknown): string {
  const o = asRecord(addr);
  if (!o) {
    return "—";
  }
  const formatted =
    typeof o.formatted_address === "string" ? o.formatted_address.trim() : "";
  const parts = [
    typeof o.street === "string" ? o.street.trim() : "",
    typeof o.city === "string" ? o.city.trim() : "",
    typeof o.state === "string" ? o.state.trim() : "",
    typeof o.zip === "string" ? o.zip.trim() : "",
  ].filter(Boolean);
  if (parts.length > 0) {
    return parts.join(", ");
  }
  return formatted || "—";
}

/** MotherShip 联想确认后的精确地址 */
export function formatSelectedAddressForAdmin(addr: unknown): string {
  const o = asRecord(addr);
  if (!o) {
    return "—";
  }
  const label =
    (typeof o.mothership_display_label === "string" &&
      o.mothership_display_label.trim()) ||
    "";
  return label || formatCustomerAddressForAdmin(addr);
}

/** @deprecated 使用 formatSelectedAddressForAdmin */
export function formatAddressForAdmin(addr: unknown): string {
  return formatSelectedAddressForAdmin(addr);
}

export function formatCargoForAdmin(
  cargo: unknown,
  record?: Pick<
    QuoteRecord,
    "weightLb" | "palletCount" | "cargoType" | "dimLIn" | "dimWIn" | "dimHIn"
  > | null,
): string {
  const o = asRecord(cargo);
  const pallets = record?.palletCount ?? o?.pallet_count;
  const cargoType = record?.cargoType ?? o?.cargo_type;
  const weightLb =
    record?.weightLb != null
      ? Number(record.weightLb)
      : typeof o?.weight_lb === "number"
        ? o.weight_lb
        : null;

  const parts: string[] = [];
  if (pallets != null) {
    parts.push(`${pallets} 托`);
  }
  if (weightLb != null && Number.isFinite(weightLb)) {
    parts.push(`${weightLb.toFixed(2)} lb`);
  }
  if (record) {
    parts.push(
      `${Number(record.dimLIn)}×${Number(record.dimWIn)}×${Number(record.dimHIn)} in`,
    );
  } else if (o?.dimensions && typeof o.dimensions === "object") {
    const d = o.dimensions as Record<string, unknown>;
    const unit = d.unit === "cm" ? "cm" : "in";
    parts.push(
      `${d.length}×${d.width}×${d.height} ${unit}`,
    );
  }
  if (typeof cargoType === "string") {
    parts.push(CARGO_TYPE_ZH[cargoType] ?? cargoType);
  }
  return parts.length > 0 ? parts.join(" · ") : "—";
}

/** @deprecated 使用 modules/quote/quote-error-messages.normalizeTechnicalReason */
export { normalizeTechnicalReason };

const ALERT_TYPE_DEFAULT_CAUSE: Partial<Record<AlertType, string>> = {
  RPA_FAILED: "询价自动化失败，未能获取 MotherShip 实时报价",
  RPA_CAPTCHA: "MotherShip 触发人机验证，RPA 已暂停",
  STRUCT_CHANGE: "MotherShip 页面结构变更，自动化脚本需更新",
  SESSION_EXPIRED: "MotherShip 会话过期，需重新登录或录制 cookies",
  STALE_FALLBACK: "实时询价失败，已降级使用历史缓存报价",
  PRICE_DEVIATION: "报价与历史基准偏差超过阈值",
  MANUAL_FALLBACK: "已触发人工兜底询价流程",
  SECURITY: "检测到安全相关异常请求",
};

/** 管理端展示用：准确中文根因，避免直接展示 JSON */
export function resolveAlertRootCause(
  alertType: AlertType,
  detail: unknown,
  quote?: QuoteRecord | null,
): string {
  const d = asRecord(detail);
  const detailText =
    typeof d?.message === "string"
      ? normalizeTechnicalReason(d.message)
      : typeof d?.reason === "string"
        ? normalizeTechnicalReason(d.reason)
        : typeof d?.error === "string"
          ? normalizeTechnicalReason(d.error)
          : "";

  if (quote?.errorMessage?.trim()) {
    const normalized = normalizeTechnicalReason(quote.errorMessage.trim());
    return normalized || formatQuoteErrorMessage(quote.errorCode, quote.errorMessage);
  }
  if (quote?.errorCode) {
    return formatQuoteErrorMessage(quote.errorCode, quote.errorMessage);
  }
  if (detailText) {
    return detailText;
  }
  if (d?.entry_error === "QUOTE_ENTRY_UNAVAILABLE") {
    return "MotherShip 报价入口无法打开（网络/会话/被拦截）";
  }
  return ALERT_TYPE_DEFAULT_CAUSE[alertType] ?? "系统预警，请结合报价单号追查";
}

export type AlertPresentation = {
  root_cause: string;
  customer_id: string | null;
  pickup_customer: string;
  pickup_selected: string;
  delivery_customer: string;
  delivery_selected: string;
  cargo_summary: string;
};

export function buildAlertPresentation(
  alertType: AlertType,
  detail: unknown,
  quote?: QuoteRecord | null,
): AlertPresentation {
  const pickup = quote?.pickupJson ?? null;
  const delivery = quote?.deliveryJson ?? null;
  return {
    root_cause: resolveAlertRootCause(alertType, detail, quote),
    customer_id:
      quote?.customerId ??
      (typeof asRecord(detail)?.customer_id === "string"
        ? (asRecord(detail)!.customer_id as string)
        : null),
    pickup_customer: formatCustomerAddressForAdmin(pickup),
    pickup_selected: formatSelectedAddressForAdmin(pickup),
    delivery_customer: formatCustomerAddressForAdmin(delivery),
    delivery_selected: formatSelectedAddressForAdmin(delivery),
    cargo_summary: formatCargoForAdmin(null, quote ?? null),
  };
}