/**
 * ONE (Ocean Network Express) Connector
 *
 * Implements CarrierConnectorPort for ONE API
 */

import { Injectable, Logger } from '@nestjs/common';
import { ConfigService } from '@nestjs/config';
import {
  CarrierConnectorPort,
  CarrierRateSearchInput,
  CarrierAvailabilityInput,
} from '@domain/ports/out/carrier-connector.port';
import { RateQuote } from '@domain/entities/rate-quote.entity';
import { BaseCarrierConnector, CarrierConfig } from '../base-carrier.connector';
import { ONERequestMapper } from './one.mapper';

@Injectable()
export class ONEConnectorAdapter extends BaseCarrierConnector implements CarrierConnectorPort {
  private readonly apiUrl: string;
  private readonly username: string;
  private readonly password: string;

  constructor(
    private readonly configService: ConfigService,
    private readonly requestMapper: ONERequestMapper
  ) {
    const config: CarrierConfig = {
      name: 'ONE',
      code: 'ONEY',
      baseUrl: configService.get<string>('ONE_API_URL', 'https://api.one-line.com/v1'),
      timeout: 5000,
      maxRetries: 3,
      circuitBreakerThreshold: 50,
      circuitBreakerTimeout: 30000,
    };
    super(config);
    this.apiUrl = config.baseUrl;
    this.username = this.configService.get<string>('ONE_USERNAME', '');
    this.password = this.configService.get<string>('ONE_PASSWORD', '');
  }

  async searchRates(input: CarrierRateSearchInput): Promise<RateQuote[]> {
    this.logger.log(`Searching ONE rates: ${input.origin} -> ${input.destination}`);

    try {
      const oneRequest = this.requestMapper.toONERequest(input);

      // ONE uses Basic Auth
      const authHeader = Buffer.from(`${this.username}:${this.password}`).toString('base64');

      const response = await this.makeRequest({
        url: `${this.apiUrl}/rates/instant-quotes`,
        method: 'POST',
        data: oneRequest,
        headers: {
          Authorization: `Basic ${authHeader}`,
          'Content-Type': 'application/json',
        },
      });

      const rateQuotes = this.requestMapper.fromONEResponse(response.data, input);

      this.logger.log(`Found ${rateQuotes.length} ONE rates`);
      return rateQuotes;
    } catch (error: any) {
      this.logger.error(`ONE API error: ${error?.message || 'Unknown error'}`);

      if (error?.response?.status === 400) {
        this.logger.warn('ONE invalid request parameters');
      }

      return [];
    }
  }

  async checkAvailability(input: CarrierAvailabilityInput): Promise<number> {
    try {
      const authHeader = Buffer.from(`${this.username}:${this.password}`).toString('base64');

      const response = await this.makeRequest({
        url: `${this.apiUrl}/capacity/slots`,
        method: 'POST',
        data: {
          origin_port: input.origin,
          destination_port: input.destination,
          cargo_cutoff_date: input.departureDate,
          equipment_type: input.containerType,
          quantity: input.quantity,
        },
        headers: {
          Authorization: `Basic ${authHeader}`,
        },
      });

      return (response.data as any).slots_available || 0;
    } catch (error: any) {
      this.logger.error(`ONE availability check error: ${error?.message || 'Unknown error'}`);
      return 0;
    }
  }
}