import { Injectable, EventEmitter } from '@angular/core';

/**
 * Service to get the group name for radio buttons.
 *
 * @export
 * @class RadioNameService
 */
@Injectable({
  providedIn: 'root',
})
export class RadioNameService {
  /**
   * Stores the id of the last generated group name.
   *
   * @static
   * @memberof RadioNameService
   */
  static counter = 0;

  /**
   * Sync.
   *
   * @type {EventEmitter<any>}
   * @memberof RadioNameService
   */
  public sync: EventEmitter<any> = new EventEmitter<any>();

  /**
   * Stores the ID for the current group.
   *
   * @private
   * @memberof RadioNameService
   */
  private id = '';

  /**
   * Creates an instance of RadioNameService.
   *
   * @memberof RadioNameService
   */
  constructor() {
    this.id = `radioButtonGroup${++RadioNameService.counter}`;
  }

  /**
   * Gets the group name.
   *
   * @return {*}  {string} The group name.
   * @memberof RadioNameService
   */
  public getGroupName(): string {
    return this.id;
  }
}