import type { QuoteRecord } from "@prisma/client";
import { filterQuotesForMotherShipUiDisplay } from "@/lib/constants/mothership-ui-tiers";
import { PRIORITY1_MANUAL_FOLLOWUP_ERROR_CODE } from "@/modules/priority1/constants";
import {
  readPriority1ShipmentMeta,
  resolvePriority1StoredQuotes,
  type Priority1DisplayLine,
} from "@/modules/priority1/quote-storage";
import { getConfidenceScore } from "@/modules/quote/confidence";
import { formatQuoteErrorMessage } from "@/modules/quote/quote-error-messages";

type QuoteTierKey = { service_level: string; rate_option: string };

export type Priority1QuoteDetailPayload = {
  display_mode: "ltl_cards" | "ftl_calendar";
  lines: Priority1DisplayLine[];
  shipment_meta?: {
    shipment_type?: string;
    pickup_date?: string;
    commodity?: string;
    origin_zip?: string;
    destination_zip?: string;
    weight_lb?: number;
  };
};

export type QuoteDetailResponse = {
  quote_id: string;
  request_id: string;
  status: "processing" | "done" | "failed" | "expired";
  valid_until?: string;
  source_type?: "rpa" | "cache" | "stale";
  is_realtime?: boolean;
  confidence_score?: number;
  currency: string;
  error_code?: string;
  error_message?: string;
  quotes?: unknown[];
  priority1?: Priority1QuoteDetailPayload;
};

export type QuoteSummaryItem = {
  quote_id: string;
  request_id: string;
  status: string;
  source_type: string | null;
  is_realtime: boolean;
  created_at: string;
  valid_until: string | null;
  pallet_count: number;
  cargo_type: string;
  error_code: string | null;
};

function resolveStatus(record: QuoteRecord): QuoteDetailResponse["status"] {
  if (
    record.status === "done" &&
    record.validUntil &&
    record.validUntil.getTime() < Date.now()
  ) {
    return "expired";
  }
  return record.status as QuoteDetailResponse["status"];
}

/** 将 QuoteRecord 格式化为 GET /quotes/{id} 响应 */
export function serializeQuoteDetail(record: QuoteRecord): QuoteDetailResponse {
  const status = resolveStatus(record);
  const sourceType = record.sourceType as
    | "rpa"
    | "cache"
    | "stale"
    | null
    | undefined;

  const base: QuoteDetailResponse = {
    quote_id: record.quoteId,
    request_id: record.requestId,
    status,
    currency: record.currency,
  };

  if (status === "processing") {
    return base;
  }

  if (status === "failed") {
    const errorCode = record.errorCode ?? "QUOTE_UNAVAILABLE";
    return {
      ...base,
      error_code: errorCode,
      error_message: formatQuoteErrorMessage(errorCode, record.errorMessage),
      is_realtime: record.isRealtime,
    };
  }

  if (status === "expired") {
    return {
      ...base,
      valid_until: record.validUntil?.toISOString(),
      source_type: sourceType ?? undefined,
      is_realtime: record.isRealtime,
    };
  }

  if (
    record.errorCode === PRIORITY1_MANUAL_FOLLOWUP_ERROR_CODE
  ) {
    const confidence =
      record.confidenceScore != null
        ? Number(record.confidenceScore)
        : getConfidenceScore("rpa");
    return {
      ...base,
      source_type: sourceType ?? "rpa",
      is_realtime: record.isRealtime,
      confidence_score: confidence,
      error_code: PRIORITY1_MANUAL_FOLLOWUP_ERROR_CODE,
      error_message: formatQuoteErrorMessage(
        record.errorCode,
        record.errorMessage,
      ),
      quotes: [],
    };
  }

  const confidence =
    record.confidenceScore != null
      ? Number(record.confidenceScore)
      : sourceType
        ? getConfidenceScore(sourceType)
        : 0.95;

  const priority1Stored = resolvePriority1StoredQuotes(
    record.quotesJson,
    record.pickupJson,
  );
  const priority1Meta = readPriority1ShipmentMeta(record.pickupJson);
  if (priority1Stored) {
    const pickup = record.pickupJson as Record<string, unknown> | null;
    const delivery = record.deliveryJson as Record<string, unknown> | null;
    const meta = readPriority1ShipmentMeta(record.pickupJson);
    return {
      ...base,
      valid_until: record.validUntil?.toISOString(),
      source_type: sourceType ?? undefined,
      is_realtime: record.isRealtime,
      confidence_score: confidence,
      priority1: {
        display_mode: priority1Stored.display_mode,
        lines: priority1Stored.lines,
        shipment_meta: {
          shipment_type: meta.shipmentType,
          pickup_date: meta.pickupDate,
          commodity: meta.commodity,
          origin_zip:
            typeof pickup?.zip === "string" ? pickup.zip : undefined,
          destination_zip:
            typeof delivery?.zip === "string" ? delivery.zip : undefined,
          weight_lb:
            record.weightLb != null ? Number(record.weightLb) : undefined,
        },
      },
    };
  }

  if (priority1Meta.shipmentType) {
    const errorCode = record.errorCode ?? "QUOTE_UNAVAILABLE";
    return {
      ...base,
      status: "failed",
      error_code: errorCode,
      error_message: formatQuoteErrorMessage(errorCode, record.errorMessage),
      is_realtime: record.isRealtime,
      confidence_score: confidence,
    };
  }

  return {
    ...base,
    valid_until: record.validUntil?.toISOString(),
    source_type: sourceType ?? undefined,
    is_realtime: record.isRealtime,
    confidence_score: confidence,
    quotes: filterQuotesForMotherShipUiDisplay(
      ((record.quotesJson as QuoteTierKey[]) ?? []) as QuoteTierKey[],
    ),
  };
}

/** 历史列表摘要 */
export function serializeQuoteSummary(record: QuoteRecord): QuoteSummaryItem {
  const status = resolveStatus(record);
  return {
    quote_id: record.quoteId,
    request_id: record.requestId,
    status,
    source_type: record.sourceType,
    is_realtime: record.isRealtime,
    created_at: record.createdAt.toISOString(),
    valid_until: record.validUntil?.toISOString() ?? null,
    pallet_count: record.palletCount,
    cargo_type: record.cargoType,
    error_code: record.errorCode,
  };
}