/**
 * Application Use Case: FileProtestUseCase
 *
 * Allows a driver to file a protest against another driver for an incident during a race.
 */

import { Protest } from '../../domain/entities/Protest';
import type { IProtestRepository } from '../../domain/repositories/IProtestRepository';
import type { IRaceRepository } from '../../domain/repositories/IRaceRepository';
import type { ILeagueMembershipRepository } from '../../domain/repositories/ILeagueMembershipRepository';
import { Result } from '@core/shared/application/Result';
import type { ApplicationErrorCode } from '@core/shared/errors/ApplicationErrorCode';
import type { UseCaseOutputPort } from '@core/shared/application/UseCaseOutputPort';
import { randomUUID } from 'crypto';

export type FileProtestErrorCode = 'RACE_NOT_FOUND' | 'SELF_PROTEST' | 'NOT_MEMBER' | 'REPOSITORY_ERROR';

export interface FileProtestInput {
  raceId: string;
  protestingDriverId: string;
  accusedDriverId: string;
  incident: {
    lap: number;
    description: string;
    timeInRace?: number;
  };
  comment?: string;
  proofVideoUrl?: string;
}

export interface FileProtestResult {
  protest: Protest;
}

export class FileProtestUseCase {
  constructor(
    private readonly protestRepository: IProtestRepository,
    private readonly raceRepository: IRaceRepository,
    private readonly leagueMembershipRepository: ILeagueMembershipRepository,
    private readonly output: UseCaseOutputPort<FileProtestResult>,
  ) {}

  async execute(command: FileProtestInput): Promise<Result<void, ApplicationErrorCode<FileProtestErrorCode, { message: string }>>> {
    try {
      // Validate race exists
      const race = await this.raceRepository.findById(command.raceId);
      if (!race) {
        return Result.err({ code: 'RACE_NOT_FOUND', details: { message: 'Race not found' } });
      }

      // Validate drivers are not the same
      if (command.protestingDriverId === command.accusedDriverId) {
        return Result.err({ code: 'SELF_PROTEST', details: { message: 'Cannot file a protest against yourself' } });
      }

      // Validate protesting driver is a member of the league
      const memberships = await this.leagueMembershipRepository.getLeagueMembers(race.leagueId);
      const protestingDriverMembership = memberships.find(
        m =>
          m.driverId.toString() === command.protestingDriverId &&
          m.status.toString() === 'active',
      );

      if (!protestingDriverMembership) {
        return Result.err({ code: 'NOT_MEMBER', details: { message: 'Protesting driver is not an active member of this league' } });
      }

      // Create the protest
      const protest = Protest.create({
        id: randomUUID(),
        raceId: command.raceId,
        protestingDriverId: command.protestingDriverId,
        accusedDriverId: command.accusedDriverId,
        incident: command.incident,
        ...(command.comment !== undefined ? { comment: command.comment } : {}),
        ...(command.proofVideoUrl !== undefined ? { proofVideoUrl: command.proofVideoUrl } : {}),
        status: 'pending',
        filedAt: new Date(),
      });

      await this.protestRepository.create(protest);

      this.output.present({ protest });

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