import TravelStop from '../entity/TravelStop';
import TravelStopTypes from '../enums/TravelStopType';
import TravelStopAdapterInterface from './TravelStopAdapterInterface';
import StopAdapterInterface from '../../Stop/adapter/StopAdapterInterface';
import TravelStopPricingAdapterInterface
  from '../../TravelStopPricing/adapter/TravelStopPricingAdapterInterface';
import TravelStopPricing from '../../TravelStopPricing/entity/TravelStopPricing';
import StopIsNotEitherPickupOrDropoffException
  from '../../common/exceptions/StopIsNotEitherPickupOrDropoffException';

export default class TravelStopAdapter implements TravelStopAdapterInterface {
  protected stopAdapter: StopAdapterInterface;
  protected travelStopPricingAdapter: TravelStopPricingAdapterInterface;
  
  constructor(stopAdapter: StopAdapterInterface, travelStopPricingAdapter: TravelStopPricingAdapterInterface) {
    this.stopAdapter = stopAdapter;
    this.travelStopPricingAdapter = travelStopPricingAdapter;
  }
  
  adapt(json: any, instance: TravelStop): TravelStop {
    instance.id = json.id;
    instance.stop = this.stopAdapter.transformToEntity(json.location);
    instance.stop_order = json.stop_order;
    instance.distance = +json.meters_distance;
    instance.time_to_reach = +json.minutes_distance;
    instance.type = this.getTypeFromIsPickupIsDropoff(json);
    
    return instance;
  }
  
  prepare(instance: TravelStop): object {
    let stopStypeConfiguration = this.getIsPickupIsDropoffConfigJson(instance);
    
    return {
      id: instance.id,
      ...stopStypeConfiguration,
      location_id: instance.stop.id,
      prices: instance.pricings.map((eachPricing: TravelStopPricing) => this.travelStopPricingAdapter.prepare(eachPricing)),
      minutes_distance: +instance.time_to_reach || 0,
      meters_distance: +instance.distance || 0,
    };
  }
  
  private getTypeFromIsPickupIsDropoff(json: any): TravelStopTypes {
    if (json.is_pickup && json.is_dropoff) {
      return TravelStopTypes.TYPE_BOTH;
    } else if (json.is_pickup && !json.is_dropoff) {
      return TravelStopTypes.TYPE_PICKUP;
    } else if (!json.is_pickup && json.is_dropoff) {
      return TravelStopTypes.TYPE_DROPOFF;
    }
    
    throw new StopIsNotEitherPickupOrDropoffException();
  }
  
  private getIsPickupIsDropoffConfigJson(instance: TravelStop): object {
    if (instance.type === TravelStopTypes.TYPE_BOTH) {
      return { is_pickup: true, is_dropoff: true };
    } else if (instance.type === TravelStopTypes.TYPE_PICKUP) {
      return { is_pickup: true, is_dropoff: false };
    } else if (instance.type === TravelStopTypes.TYPE_DROPOFF) {
      return { is_pickup: false, is_dropoff: true };
    }
    
    throw new StopIsNotEitherPickupOrDropoffException();
  }
}