import { ChangeDetectorRef, Injectable, PipeTransform } from '@angular/core';
import { Observable, of } from 'rxjs';

/**
 * Adapter for different translate tools/libraries.
 * An implementation of a translate tool/library adapter has to implement this service "interface".
 */
@Injectable()
export class PFETranslateService {
  /**
   * Returns the translation of a key.
   */
  get(key: string): Observable<string> {
    return of(key);
  }

  /**
   * Returns an instance of the translate pipe instance.
   * If a translation tool/library already provides a translate pipe, this can simply be returned.
   * Otherwise a "proxy" pipe can be used.
   * If undefined is returned, no translation will be applied.
   */
  // eslint-disable-next-line @typescript-eslint/no-unused-vars
  getTranslatePipeInstance(_ref: ChangeDetectorRef): PipeTransform | undefined {
    return undefined;
  }
}