import type { IRaceRepository } from '../../domain/repositories/IRaceRepository';
import type { AsyncUseCase } from '@core/shared/application';
import type { Logger } from '@core/shared/application';
import { Result } from '@core/shared/application/Result';
import type { ApplicationErrorCode } from '@core/shared/errors/ApplicationErrorCode';
import type { ReopenRaceCommandDTO } from '../dto/ReopenRaceCommandDTO';

/**
 * Use Case: ReopenRaceUseCase
 *
 * Encapsulates the workflow for re-opening a race:
 * - loads the race by id
 * - returns error if the race does not exist
 * - delegates transition rules to the Race domain entity via `reopen()`
 * - persists the updated race via the repository.
 */
export class ReopenRaceUseCase
  implements AsyncUseCase<ReopenRaceCommandDTO, void, string> {
  constructor(
    private readonly raceRepository: IRaceRepository,
    private readonly logger: Logger,
  ) {}

  async execute(command: ReopenRaceCommandDTO): Promise<Result<void, ApplicationErrorCode<string>>> {
    const { raceId } = command;
    this.logger.debug(`[ReopenRaceUseCase] Executing for raceId: ${raceId}`);

    try {
      const race = await this.raceRepository.findById(raceId);
      if (!race) {
        this.logger.warn(`[ReopenRaceUseCase] Race with ID ${raceId} not found.`);
        return Result.err({ code: 'RACE_NOT_FOUND' });
      }

      const reopenedRace = race.reopen();
      await this.raceRepository.update(reopenedRace);
      this.logger.info(`[ReopenRaceUseCase] Race ${raceId} re-opened successfully.`);
      return Result.ok(undefined);
    } catch (error) {
      if (error instanceof Error && error.message.includes('already scheduled')) {
        this.logger.warn(`[ReopenRaceUseCase] Domain error re-opening race ${raceId}: ${error.message}`);
        return Result.err({ code: 'RACE_ALREADY_SCHEDULED' });
      }
      if (error instanceof Error && error.message.includes('running race')) {
        this.logger.warn(`[ReopenRaceUseCase] Domain error re-opening race ${raceId}: ${error.message}`);
        return Result.err({ code: 'CANNOT_REOPEN_RUNNING_RACE' });
      }
      this.logger.error(
        `[ReopenRaceUseCase] Unexpected error re-opening race ${raceId}`,
        error instanceof Error ? error : new Error(String(error)),
      );
      return Result.err({ code: 'UNEXPECTED_ERROR' });
    }
  }
}