import { compareUiTierSortOrder } from "@/lib/constants/quote";
import type { QuoteItem } from "@/modules/providers/quote-provider";
import { RpaError } from "@/modules/rpa/errors";

function tierKey(serviceLevel: string, rateOption: string): string {
  return `${serviceLevel}/${rateOption}`;
}

/** 保留 MotherShip 实际返回的全部 UI 档位（2+1 / 2+2 / 3+3 等），仅去重 + 排序 */
export function normalizeQuoteItems(items: QuoteItem[]): QuoteItem[] {
  const map = new Map<string, QuoteItem>();
  for (const item of items) {
    map.set(tierKey(item.serviceLevel, item.rateOption), item);
  }

  if (!map.has("standard/lowest")) {
    throw new RpaError(
      "RPA_DATA_INVALID",
      "缺少必选报价档位：standard/lowest",
      { retryable: false },
    );
  }

  const normalized = [...map.values()].sort((a, b) =>
    compareUiTierSortOrder(
      a.serviceLevel,
      a.rateOption,
      b.serviceLevel,
      b.rateOption,
    ),
  );

  if (normalized.length === 0) {
    throw new RpaError(
      "RPA_DATA_INVALID",
      "未解析到有效报价档位",
      { retryable: false },
    );
  }

  return normalized;
}

/** 网络层报价严格校验（唯一验收入口） */
export function validateQuoteSchema(items: QuoteItem[]): QuoteItem[] {
  const normalized = normalizeQuoteItems(items);

  for (const tier of normalized) {
    if (tier.rawFreight <= 0) {
      throw new RpaError(
        "RPA_DATA_INVALID",
        `档位 ${tier.serviceLevel}/${tier.rateOption} 运费无效`,
        { retryable: false },
      );
    }
    if (!tier.transitDays?.trim() || tier.transitDays === "—") {
      throw new RpaError(
        "RPA_DATA_INVALID",
        `档位 ${tier.serviceLevel}/${tier.rateOption} 时效为空`,
        { retryable: false },
      );
    }
  }

  return normalized;
}