import type { Standing } from '@gridpilot/racing/domain/entities/Standing';
import type {
  ILeagueStandingsPresenter,
  StandingItemViewModel,
  LeagueStandingsViewModel,
} from '@gridpilot/racing/application/presenters/ILeagueStandingsPresenter';

export class LeagueStandingsPresenter implements ILeagueStandingsPresenter {
  private viewModel: LeagueStandingsViewModel | null = null;

  present(standings: Standing[]): LeagueStandingsViewModel {
    const standingItems: StandingItemViewModel[] = standings.map((standing) => ({
      id: standing.id,
      leagueId: standing.leagueId,
      seasonId: standing.seasonId,
      driverId: standing.driverId,
      position: standing.position,
      points: standing.points,
      wins: standing.wins,
      podiums: standing.podiums,
      racesCompleted: standing.racesCompleted,
    }));

    this.viewModel = {
      leagueId: standings[0]?.leagueId ?? '',
      standings: standingItems,
    };

    return this.viewModel;
  }

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