import type { ILeagueMembershipRepository } from '../../domain/repositories/ILeagueMembershipRepository';
import type { IRaceRepository } from '../../domain/repositories/IRaceRepository';
import type { ILeagueStatsPresenter, LeagueStatsResultDTO, LeagueStatsViewModel } from '../presenters/ILeagueStatsPresenter';
import type { UseCase } from '@core/shared/application/UseCase';

export interface GetLeagueStatsUseCaseParams {
  leagueId: string;
}

export class GetLeagueStatsUseCase implements UseCase<GetLeagueStatsUseCaseParams, LeagueStatsResultDTO, LeagueStatsViewModel, ILeagueStatsPresenter> {
  constructor(
    private readonly leagueMembershipRepository: ILeagueMembershipRepository,
    private readonly raceRepository: IRaceRepository,
  ) {}

  async execute(params: GetLeagueStatsUseCaseParams, presenter: ILeagueStatsPresenter): Promise<void> {
    const memberships = await this.leagueMembershipRepository.getLeagueMembers(params.leagueId);
    const races = await this.raceRepository.findByLeagueId(params.leagueId);
    // TODO: Implement average rating calculation from driver ratings
    const dto: LeagueStatsResultDTO = {
      totalMembers: memberships.length,
      totalRaces: races.length,
      averageRating: 0,
    };
    presenter.reset();
    presenter.present(dto);
  }
}