import {Injectable} from '@angular/core';
import {NetworkService} from '../../model/network/network.service';
import {BehaviorSubject} from 'rxjs';
import {PersonDTO} from '../../../../common/entities/PersonDTO';


@Injectable()
export class FacesService {
  public persons: BehaviorSubject<PersonDTO[]>;

  constructor(private networkService: NetworkService) {
    this.persons = new BehaviorSubject<PersonDTO[]>([]);
  }

  public async setFavourite(person: PersonDTO, isFavourite: boolean): Promise<void> {
    const updated = await this.networkService.postJson<PersonDTO>('/person/' + person.name, {isFavourite: isFavourite});
    const updatesList = this.persons.getValue();
    for (let i = 0; i < updatesList.length; i++) {
      if (updatesList[i].id === updated.id) {
        updatesList[i] = updated;
        this.persons.next(updatesList);
        return;
      }
    }
  }

  public async getPersons() {
    this.persons.next((await this.networkService.getJson<PersonDTO[]>('/person')).sort((a, b) => a.name.localeCompare(b.name)));
  }

}