import type { ILeagueMembershipRepository } from '../../domain/repositories/ILeagueMembershipRepository';
import { Result } from '@core/shared/application/Result';
import type { ApplicationErrorCode } from '@core/shared/errors/ApplicationErrorCode';
import { randomUUID } from 'crypto';
import type { UseCaseOutputPort } from '@core/shared/application/UseCaseOutputPort';
import { JoinedAt } from '../../domain/value-objects/JoinedAt';

export interface ApproveLeagueJoinRequestInput {
  leagueId: string;
  requestId: string;
}

export interface ApproveLeagueJoinRequestResult {
  success: boolean;
  message: string;
}

export class ApproveLeagueJoinRequestUseCase {
  constructor(
    private readonly leagueMembershipRepository: ILeagueMembershipRepository,
    private readonly output: UseCaseOutputPort<ApproveLeagueJoinRequestResult>,
  ) {}

  async execute(
    input: ApproveLeagueJoinRequestInput,
  ): Promise<Result<void, ApplicationErrorCode<'JOIN_REQUEST_NOT_FOUND'>>> {
    const requests = await this.leagueMembershipRepository.getJoinRequests(input.leagueId);
    const request = requests.find(r => r.id === input.requestId);
    if (!request) {
      return Result.err({ code: 'JOIN_REQUEST_NOT_FOUND' });
    }

    await this.leagueMembershipRepository.removeJoinRequest(input.requestId);
    await this.leagueMembershipRepository.saveMembership({
      id: randomUUID(),
      leagueId: input.leagueId,
      driverId: request.driverId,
      role: 'member',
      status: 'active',
      joinedAt: JoinedAt.create(new Date()),
    });

    const result: ApproveLeagueJoinRequestResult = { success: true, message: 'Join request approved.' };
    this.output.present(result);

    return Result.ok(undefined);
  }
}