import type { ILeagueRepository } from '../../domain/repositories/ILeagueRepository';
import type { AsyncUseCase } from '@core/shared/application';
import { Result } from '@core/shared/result/Result';
import { RacingDomainValidationError } from '../../domain/errors/RacingDomainError';
import type { GetLeagueAdminUseCaseParams } from './GetLeagueAdminUseCaseParams';
import type { GetLeagueAdminResultDTO } from '../dto/GetLeagueAdminResultDTO';

export class GetLeagueAdminUseCase implements AsyncUseCase<GetLeagueAdminUseCaseParams, Result<GetLeagueAdminResultDTO, RacingDomainValidationError>> {
  constructor(
    private readonly leagueRepository: ILeagueRepository,
  ) {}

  async execute(params: GetLeagueAdminUseCaseParams): Promise<Result<GetLeagueAdminResultDTO, RacingDomainValidationError>> {
    const league = await this.leagueRepository.findById(params.leagueId);
    if (!league) {
      return Result.err(new RacingDomainValidationError('League not found'));
    }

    const dto: GetLeagueAdminResultDTO = {
      league: {
        id: league.id,
        ownerId: league.ownerId,
      },
    };
    return Result.ok(dto);
  }
}