import { Observable } from 'rxjs';
import { ErrorObservable } from 'rxjs/observable/ErrorObservable';
import { IErrorHandler } from './error-handler.interface';

export class FallbackErrorHandler implements IErrorHandler {

  public handle(error?: any): ErrorObservable {
    const unknownError: Error = new Error();
    if (typeof error === 'string') {
      unknownError.message = error;
    } else if (error instanceof Error) {
      unknownError.message = error.message;
      unknownError.stack = error.stack;
      unknownError.name = error.name;
    } else if (error) {
      unknownError.message = JSON.stringify(error);
    }
    return Observable.throw(unknownError);
  }
}