import type {
  IRaceRegistrationsPresenter,
  RaceRegistrationsViewModel,
} from '@gridpilot/racing/application/presenters/IRaceRegistrationsPresenter';

export class RaceRegistrationsPresenter implements IRaceRegistrationsPresenter {
  private viewModel: RaceRegistrationsViewModel | null = null;

  present(registeredDriverIds: string[]): RaceRegistrationsViewModel {
    this.viewModel = {
      registeredDriverIds,
      count: registeredDriverIds.length,
    };

    return this.viewModel;
  }

  getViewModel(): RaceRegistrationsViewModel {
    if (!this.viewModel) {
      throw new Error('Presenter has not been called yet');
    }
    return this.viewModel;
  }
}