/**
 * Maersk Response Mapper
 *
 * Maps Maersk API response to domain entities
 */

import { v4 as uuidv4 } from 'uuid';
import { RateQuote } from '@domain/entities/rate-quote.entity';
import { MaerskRateSearchResponse, MaerskRateResult, MaerskRouteSegment } from './maersk.types';

export class MaerskResponseMapper {
  /**
   * Map Maersk API response to domain RateQuote entities
   */
  static toRateQuotes(
    response: MaerskRateSearchResponse,
    originCode: string,
    destinationCode: string
  ): RateQuote[] {
    return response.results.map(result => this.toRateQuote(result, originCode, destinationCode));
  }

  /**
   * Map single Maersk rate result to RateQuote domain entity
   */
  private static toRateQuote(
    result: MaerskRateResult,
    originCode: string,
    destinationCode: string
  ): RateQuote {
    const surcharges = result.pricing.charges.map(charge => ({
      type: charge.chargeCode,
      description: charge.chargeName,
      amount: charge.amount,
      currency: charge.currency,
    }));

    const route = result.schedule.routeSchedule.map(segment => this.mapRouteSegment(segment));

    return RateQuote.create({
      id: uuidv4(),
      carrierId: 'maersk-carrier-id', // TODO: Get from carrier repository
      carrierName: 'Maersk Line',
      carrierCode: 'MAERSK',
      origin: {
        code: result.routeDetails.origin.unlocCode,
        name: result.routeDetails.origin.cityName,
        country: result.routeDetails.origin.countryName,
      },
      destination: {
        code: result.routeDetails.destination.unlocCode,
        name: result.routeDetails.destination.cityName,
        country: result.routeDetails.destination.countryName,
      },
      pricing: {
        baseFreight: result.pricing.oceanFreight,
        surcharges,
        totalAmount: result.pricing.totalAmount,
        currency: result.pricing.currency,
      },
      containerType: this.mapContainerType(result.equipment.type),
      mode: 'FCL', // Maersk typically handles FCL
      etd: new Date(result.routeDetails.departureDate),
      eta: new Date(result.routeDetails.arrivalDate),
      transitDays: result.routeDetails.transitTime,
      route,
      availability: result.bookingDetails.equipmentAvailability,
      frequency: result.schedule.frequency,
      vesselType: result.vesselInfo?.type,
      co2EmissionsKg: result.sustainability?.co2Emissions,
    });
  }

  /**
   * Map Maersk route segment to domain format
   */
  private static mapRouteSegment(segment: MaerskRouteSegment): any {
    return {
      portCode: segment.portCode,
      portName: segment.portName,
      arrival: segment.arrivalDate ? new Date(segment.arrivalDate) : undefined,
      departure: segment.departureDate ? new Date(segment.departureDate) : undefined,
      vesselName: segment.vesselName,
      voyageNumber: segment.voyageNumber,
    };
  }

  /**
   * Map Maersk container type to internal format
   */
  private static mapContainerType(maerskType: string): string {
    // Map Maersk container types to standard format
    const typeMap: { [key: string]: string } = {
      '20DRY': '20DRY',
      '40DRY': '40DRY',
      '40HC': '40HC',
      '45HC': '45HC',
      '20REEFER': '20REEFER',
      '40REEFER': '40REEFER',
      '40HCREEFER': '40HCREEFER',
      '20OT': '20OT',
      '40OT': '40OT',
      '20FR': '20FR',
      '40FR': '40FR',
    };

    return typeMap[maerskType] || maerskType;
  }
}