import {Injectable} from "@angular/core";
import {HttpClient} from "@angular/common/http";
import {BehaviorSubject, Observable} from "rxjs";
import {Indicator, Stakeholder} from "../utils/entities/stakeholder";
import {HelperFunctions} from "../openaireLibrary/utils/HelperFunctions.class";

@Injectable({
  providedIn: "root"
})
export class StakeholderService {

  private stakeholderSubject: BehaviorSubject<Stakeholder> = null;

  constructor(private http: HttpClient) {
    this.stakeholderSubject = new BehaviorSubject<Stakeholder>(null);
  }

  getStakeholder(url: string, alias:string): Observable<Stakeholder> {
    // return new BehaviorSubject<Stakeholder>(Stakeholder.createECStakeholder()).asObservable();
    return this.http.get<Stakeholder>(url + '/stakeholder/' + encodeURIComponent(alias));
  }

  getAllStakeholders(url: string, type: string = null): Observable<Stakeholder[]> {
    return this.http.get<Stakeholder[]>(url + '/stakeholder/all' + (type)?('?type=' + type):'');
  }

  getStakeholders(url: string, type: string = null): Observable<Stakeholder[]> {
    return this.http.get<Stakeholder[]>(url + '/stakeholder' + (type)?('?type=' + type):'');
  }

  getDefaultStakeholders(url: string, type: string = null): Observable<Stakeholder[]> {
    return this.http.get<Stakeholder[]>(url + '/stakeholder/default' + (type)?('?type=' + type):'');
  }

  saveStakeholder(url: string, stakeholder: Stakeholder): Observable<Stakeholder> {
    return this.http.post<Stakeholder>(url + '/stakeholder/save', stakeholder);
  }

  saveIndicator(url: string, path: string[], indicator: Indicator): Observable<Indicator> {
    path = HelperFunctions.encodeArray(path);
    return this.http.post<Indicator>(url + '/' + path.join('/') +
      '/indicator/save', indicator);
  }

  deleteElement(url: string, path: string[]): Observable<boolean> {
    path = HelperFunctions.encodeArray(path);
    return this.http.delete<boolean>(url + '/' + path.join('/'))
  }

  getStakeholderAsObservable(): Observable<Stakeholder> {
    return this.stakeholderSubject.asObservable();
  }

  get stakeholder(): Stakeholder {
    return this.stakeholderSubject.getValue();
  }

  setStakeholder(stakeholder: Stakeholder) {
    this.stakeholderSubject.next(stakeholder);
  }
}