import Product from '../../Product/entity/Product';
import ValidableInterface from '../../common/interfaces/ValidableInterface';
import JourneyGroup from '../../JourneyGroup/entity/JourneyGroup';
import Concession from '../../Concession/entity/Concession';

export default class TravelProduct extends Product implements ValidableInterface {
  // Concessions must be not initialized because of the BE logic.
  protected _concessions: Array<Concession>;
  protected _journey_groups: Array<JourneyGroup> = [];
  protected _seats_on_sale: number = null;

  get concessions(): Array<Concession> {
    return this._concessions;
  }

  set concessions(value: Array<Concession>) {
    this._concessions = value;
  }

  get journey_groups(): Array<JourneyGroup> {
    return this._journey_groups;
  }

  set journey_groups(value: Array<JourneyGroup>) {
    this._journey_groups = value;
  }

  get seats_on_sale(): number {
    return this._seats_on_sale;
  }

  set seats_on_sale(value: number) {
    this._seats_on_sale = value;
  }

  private buildConcessionsArray() {
    if (!Array.isArray(this.concessions)) {
      this.concessions = [];
    }
  }

  addJourneyGroup(item: JourneyGroup) {
    this.journey_groups.push(item);
  }

  setJourneyGroup(index, item: JourneyGroup) {
    this.journey_groups[index] = item;
  }

  removeJourneyGroup(index) {
    this.journey_groups.splice(index, 1);
  }

  addConcession(item: Concession) {
    this.buildConcessionsArray();
    this.concessions.push(item);
  }

  setConcession(index, item: Concession) {
    this.buildConcessionsArray();
    this.concessions[index] = item;
  }

  removeConcession(index) {
    this.buildConcessionsArray();
    this.concessions.splice(index, 1);
  }

  invalidFields(prefix: string = ''): Array<string> {
    let fields = super.invalidFields('product__');

    !this.hasValue(this.seats_on_sale) && fields.push(`${prefix}seats_on_sale`);
    this.journey_groups.map(eachJourneyGroup => fields.push(...eachJourneyGroup.invalidFields('product__')));

    return fields;
  }
}