/**
 * Application Use Case: ReviewProtestUseCase
 *
 * Allows a steward to review a protest and make a decision (uphold or dismiss).
 */

import type { IProtestRepository } from '../../domain/repositories/IProtestRepository';
import type { IRaceRepository } from '../../domain/repositories/IRaceRepository';
import type { ILeagueMembershipRepository } from '../../domain/repositories/ILeagueMembershipRepository';
import type { Logger, UseCaseOutputPort } from '@core/shared/application';
import { Result } from '@core/shared/application/Result';
import type { ApplicationErrorCode } from '@core/shared/errors/ApplicationErrorCode';

export type ReviewProtestErrorCode = 'PROTEST_NOT_FOUND' | 'RACE_NOT_FOUND' | 'NOT_LEAGUE_ADMIN' | 'REPOSITORY_ERROR';

export type ReviewProtestApplicationError = ApplicationErrorCode<ReviewProtestErrorCode, { message: string }>;

export interface ReviewProtestInput {
  protestId: string;
  stewardId: string;
  decision: 'uphold' | 'dismiss';
  decisionNotes: string;
}

export interface ReviewProtestResult {
  leagueId: string;
  protestId: string;
  status: 'upheld' | 'dismissed';
}

export class ReviewProtestUseCase {
  constructor(
    private readonly protestRepository: IProtestRepository,
    private readonly raceRepository: IRaceRepository,
    private readonly leagueMembershipRepository: ILeagueMembershipRepository,
    private readonly logger: Logger,
    private readonly output: UseCaseOutputPort<ReviewProtestResult>,
  ) {}

  async execute(input: ReviewProtestInput): Promise<Result<void, ReviewProtestApplicationError>> {
    this.logger.debug('Executing ReviewProtestUseCase', { input });

    try {
      // Load the protest
      const protest = await this.protestRepository.findById(input.protestId);
      if (!protest) {
        this.logger.warn('Protest not found', { protestId: input.protestId });
        return Result.err({ code: 'PROTEST_NOT_FOUND', details: { message: 'Protest not found' } });
      }

      // Load the race to get league ID
      const race = await this.raceRepository.findById(protest.raceId);
      if (!race) {
        this.logger.warn('Race not found for protest', { protestId: input.protestId, raceId: protest.raceId });
        return Result.err({ code: 'RACE_NOT_FOUND', details: { message: 'Race not found' } });
      }

      // Validate steward has authority (owner or admin of the league)
      const memberships = await this.leagueMembershipRepository.getLeagueMembers(race.leagueId);
      const stewardMembership = memberships.find(
        m => m.driverId === input.stewardId && m.status === 'active'
      );

      if (!stewardMembership || (stewardMembership.role !== 'owner' && stewardMembership.role !== 'admin')) {
        this.logger.warn('Unauthorized steward attempting to review protest', { stewardId: input.stewardId, leagueId: race.leagueId });
        return Result.err({ code: 'NOT_LEAGUE_ADMIN', details: { message: 'Only league owners and admins can review protests' } });
      }

      // Apply the decision
      const updatedProtest = input.decision === 'uphold'
        ? protest.uphold(input.stewardId, input.decisionNotes)
        : protest.dismiss(input.stewardId, input.decisionNotes);

      await this.protestRepository.update(updatedProtest);

      const result: ReviewProtestResult = {
        leagueId: race.leagueId,
        protestId: typeof protest.id === 'string' ? protest.id : (protest as any).id,
        status: input.decision === 'uphold' ? 'upheld' : 'dismissed',
      };

      this.output.present(result);

      this.logger.info('Protest reviewed successfully', {
        protestId: result.protestId,
        leagueId: result.leagueId,
        status: result.status,
      });

      return Result.ok(undefined);
    } catch (error) {
      const message = error instanceof Error ? error.message : 'Failed to review protest';
      this.logger.error('Failed to review protest', { error: message });
      return Result.err({ code: 'REPOSITORY_ERROR', details: { message } });
    }
  }
}