import StopGroupAdapterInterface from './StopGroupAdapterInterface';
import StopAdapter from '../../Stop/adapter/StopAdapter';
import StopGroup from '../entity/StopGroup';

export default class StopGroupAdapter implements StopGroupAdapterInterface {
  protected stopAdapter: StopAdapter;

  constructor(stopAdapter: StopAdapter) {
    this.stopAdapter = stopAdapter;
  }

  adapt(json: any, instance: StopGroup): StopGroup {
    instance.id = json.id;
    instance.name = json.name;
    instance.stops = (json.locations || []).map(stop => this.stopAdapter.transformToEntity(stop));
    instance.number_of_routes = json.number_of_routes || 0;
    instance.number_of_journeys = json.number_of_journeys || 0;

    return instance;
  }

  prepare(instance: StopGroup): object {
    const object = {
      id: instance.id,
      name: instance.name,
      locations: (instance.stops || []).map(stop => this.stopAdapter.transformToPayload(stop)),
    };

    return object;
  }

  transformToEntity(json: any): StopGroup {
    return this.adapt(json, new StopGroup());
  }

  transformToPayload(instance: StopGroup): any {
    return this.prepare(instance);
  }
}