import { Inject, Injectable } from '@nestjs/common';
import { COURIER_PROVIDER } from './courier.constants';
import type {
  BatchShipmentQuery,
  CourierCallOptions,
  CreateShipmentInput,
  CreateShipmentResult,
  DeliveryCoverageResult,
  FreightEstimateResult,
  ICourierProvider,
  ShipmentDetail,
  ShipmentQuery,
  TrackCallbackResponse,
  TrackNode,
  TrackCallbackPayload,
  CourierMappedOrderStatus,
} from './courier.types';

/**
 * 快递统一门面：业务层只依赖本 Service，不感知具体快递商实现。
 */
@Injectable()
export class CourierService {
  constructor(@Inject(COURIER_PROVIDER) private readonly provider: ICourierProvider) {}

  get activeProvider() {
    return this.provider.code;
  }

  createShipment(input: CreateShipmentInput, options?: CourierCallOptions): Promise<CreateShipmentResult> {
    return this.provider.createShipment(input, options);
  }

  cancelShipment(query: ShipmentQuery, options?: CourierCallOptions): Promise<void> {
    return this.provider.cancelShipment(query, options);
  }

  getShipment(query: ShipmentQuery, options?: CourierCallOptions): Promise<ShipmentDetail> {
    return this.provider.getShipment(query, options);
  }

  batchGetShipments(query: BatchShipmentQuery, options?: CourierCallOptions): Promise<ShipmentDetail[]> {
    return this.provider.batchGetShipments(query, options);
  }

  getTrack(query: ShipmentQuery, options?: CourierCallOptions): Promise<TrackNode[]> {
    return this.provider.getTrack(query, options);
  }

  getSignPhotos(query: ShipmentQuery, options?: CourierCallOptions): Promise<string[]> {
    return this.provider.getSignPhotos(query, options);
  }

  checkDeliveryCoverage(toAddress: string, options?: CourierCallOptions): Promise<DeliveryCoverageResult> {
    return this.provider.checkDeliveryCoverage(toAddress, options);
  }

  estimateFreight(weight: number, options?: CourierCallOptions): Promise<FreightEstimateResult> {
    return this.provider.estimateFreight(weight, options);
  }

  buildTrackCallbackResponse(success?: boolean): TrackCallbackResponse {
    return this.provider.buildTrackCallbackResponse(success);
  }

  parseTrackCallback(body: unknown): TrackCallbackPayload | null {
    return this.provider.parseTrackCallback(body);
  }

  mapTrackStatus(status: string): CourierMappedOrderStatus | null {
    return this.provider.mapTrackStatus(status);
  }
}