import {Injectable, EventEmitter} from '@angular/core';
import {Filter, FilterInfo} from '../types/filter-info';
/**
 * @author Harsha A.N.S
 */
@Injectable({
  providedIn: 'root',

})
export class FilterChangeNotifyService {

  public filterChanged$: EventEmitter<FilterInfo[]>;

  private changedFilters: Array<FilterInfo> = [];

  constructor() {
    this.filterChanged$ = new EventEmitter();
  }

  /**
   * EnQueue filters
   * */
  enQueueFilter(filter: FilterInfo) {
    this.changedFilters.push(filter);
  }

  /**
   * Empty Queue
   * */
  emptyQueue() {
    this.changedFilters = [];
  }

  public notifyFilterChange(val:any) {
    this.filterChanged$.emit(this.changedFilters);
    this.emptyQueue();
  }

}