import type { ILeagueRepository } from '../../domain/repositories/ILeagueRepository';
import type { IGetTotalLeaguesPresenter, GetTotalLeaguesResultDTO, GetTotalLeaguesViewModel } from '../presenters/IGetTotalLeaguesPresenter';
import type { UseCase } from '@core/shared/application/UseCase';

export interface GetTotalLeaguesUseCaseParams {}

export interface GetTotalLeaguesResultDTO {
  totalLeagues: number;
}

export class GetTotalLeaguesUseCase implements UseCase<GetTotalLeaguesUseCaseParams, GetTotalLeaguesResultDTO, GetTotalLeaguesViewModel, IGetTotalLeaguesPresenter> {
  constructor(private readonly leagueRepository: ILeagueRepository) {}

  async execute(params: GetTotalLeaguesUseCaseParams, presenter: IGetTotalLeaguesPresenter): Promise<void> {
    const leagues = await this.leagueRepository.findAll();
    const dto: GetTotalLeaguesResultDTO = { totalLeagues: leagues.length };
    presenter.reset();
    presenter.present(dto);
  }
}