import { Injectable, OnDestroy } from '@angular/core';
import { NaI18NService } from '../i18n/na-i18n.service';
import { BehaviorSubject, Subscription, Observable } from 'rxjs';
import { NaMenu } from './na-menu';
import { share } from 'rxjs/operators';

@Injectable({
  providedIn: 'root'
})
export class NaMenuService implements OnDestroy {
  private _change$: BehaviorSubject<NaMenu[]> = new BehaviorSubject<NaMenu[]>([]);
  private i18n$: Subscription;

  private data: NaMenu[] = [];

  constructor(private i18nSrv: NaI18NService) {}

  get change(): Observable<NaMenu[]> {
    return this._change$.pipe(share());
  }

  getPathByUrl(url: string): NaMenu[] {
    return null;
  }

  ngOnDestroy(): void {
    if (this._change$) {
      this._change$.unsubscribe();
    }
    if (this.i18n$) {
      this.i18n$.unsubscribe();
    }
  }
}