wireguard-manager-gui/wg_dashboard_frontend/src/app/services/config.service.ts

import { Injectable } from '@angular/core';
import {HttpErrorResponse} from "@angular/common/http";
import {throwError} from "rxjs";

@Injectable({
  providedIn: 'root'
})
export class ConfigService {

  public applicationName = "Wireguard Manager";

  constructor() { }

  public handleError(error: HttpErrorResponse) {
    if (error.error instanceof ErrorEvent) {
      // A client-side or network error occurred. Handle it accordingly.
      console.error('An error occurred:', error.error.message);
    } else {
      // The backend returned an unsuccessful response code.
      // The response body may contain clues as to what went wrong,
      console.error(
        `Backend returned code ${error.status}, ` +
        `body was: ${error.error}`);
    }
    // return an observable with a user-facing error message
    return throwError(
      'Something bad happened; please try again later.');
  };
}