import type { IRaceRepository } from '../../domain/repositories/IRaceRepository';
import type { ILeagueRepository } from '../../domain/repositories/ILeagueRepository';
import type {
  IAllRacesPagePresenter,
  AllRacesPageResultDTO,
  AllRacesPageViewModel,
  AllRacesListItemViewModel,
  AllRacesFilterOptionsViewModel,
} from '../presenters/IAllRacesPagePresenter';
import type { UseCase } from '@gridpilot/shared/application';

export class GetAllRacesPageDataUseCase
  implements UseCase<void, AllRacesPageResultDTO, AllRacesPageViewModel, IAllRacesPagePresenter> {
  constructor(
    private readonly raceRepository: IRaceRepository,
    private readonly leagueRepository: ILeagueRepository,
  ) {}

  async execute(_input: void, presenter: IAllRacesPagePresenter): Promise<void> {
    const [allRaces, allLeagues] = await Promise.all([
      this.raceRepository.findAll(),
      this.leagueRepository.findAll(),
    ]);

    const leagueMap = new Map(allLeagues.map((league) => [league.id, league.name]));

    const races: AllRacesListItemViewModel[] = allRaces
      .slice()
      .sort((a, b) => b.scheduledAt.getTime() - a.scheduledAt.getTime())
      .map((race) => ({
        id: race.id,
        track: race.track,
        car: race.car,
        scheduledAt: race.scheduledAt.toISOString(),
        status: race.status,
        leagueId: race.leagueId,
        leagueName: leagueMap.get(race.leagueId) ?? 'Unknown League',
        strengthOfField: race.strengthOfField ?? null,
      }));

    const uniqueLeagues = new Map<string, { id: string; name: string }>();
    for (const league of allLeagues) {
      uniqueLeagues.set(league.id, { id: league.id, name: league.name });
    }

    const filters: AllRacesFilterOptionsViewModel = {
      statuses: [
        { value: 'all', label: 'All Statuses' },
        { value: 'scheduled', label: 'Scheduled' },
        { value: 'running', label: 'Live' },
        { value: 'completed', label: 'Completed' },
        { value: 'cancelled', label: 'Cancelled' },
      ],
      leagues: Array.from(uniqueLeagues.values()),
    };

    const viewModel: AllRacesPageViewModel = {
      races,
      filters,
    };

    presenter.reset();
    presenter.present(viewModel);
  }
}