import { RacesApiClient } from '../../api/races/RacesApiClient';
import { RaceDetailViewModel } from '../../view-models/RaceDetailViewModel';
import { RacesPageViewModel } from '../../view-models/RacesPageViewModel';
import { RaceStatsViewModel } from '../../view-models/RaceStatsViewModel';

// TODO: Move these types to apps/website/lib/types/generated when available
type RacesPageDataRaceDTO = {
  id: string;
  track: string;
  car: string;
  scheduledAt: string;
  status: string;
  leagueId: string;
  leagueName: string;
};
type RacesPageDataDto = { races: RacesPageDataRaceDTO[] };
type RaceStatsDTO = { totalRaces: number };

/**
 * Race Service
 *
 * Orchestrates race operations by coordinating API calls and view model creation.
 * All dependencies are injected via constructor.
 */
export class RaceService {
  constructor(
    private readonly apiClient: RacesApiClient
  ) {}

  /**
   * Get race detail with view model transformation
   */
  async getRaceDetail(
    raceId: string,
    driverId: string
  ): Promise<RaceDetailViewModel> {
    const dto = await this.apiClient.getDetail(raceId, driverId);
    return new RaceDetailViewModel(dto);
  }

  /**
   * Get races page data with view model transformation
   */
  async getRacesPageData(): Promise<RacesPageViewModel> {
    const dto = await this.apiClient.getPageData();
    return new RacesPageViewModel(this.transformRacesPageData(dto));
  }

  /**
   * Get total races statistics with view model transformation
   */
  async getRacesTotal(): Promise<RaceStatsViewModel> {
    const dto: RaceStatsDTO = await this.apiClient.getTotal();
    return new RaceStatsViewModel(dto);
  }

  /**
   * Register for a race
   */
  async registerForRace(raceId: string, leagueId: string, driverId: string): Promise<void> {
    await this.apiClient.register(raceId, { leagueId, driverId });
  }

  /**
   * Withdraw from a race
   */
  async withdrawFromRace(raceId: string, driverId: string): Promise<void> {
    await this.apiClient.withdraw(raceId, { driverId });
  }

  /**
   * Cancel a race
   */
  async cancelRace(raceId: string): Promise<void> {
    await this.apiClient.cancel(raceId);
  }

  /**
   * Complete a race
   */
  async completeRace(raceId: string): Promise<void> {
    await this.apiClient.complete(raceId);
  }

  /**
    * Transform API races page data to view model format
    */
   private transformRacesPageData(dto: RacesPageDataDto): {
     upcomingRaces: Array<{ id: string; title: string; scheduledTime: string; status: string }>;
     completedRaces: Array<{ id: string; title: string; scheduledTime: string; status: string }>;
     totalCount: number;
   } {
     const upcomingRaces = dto.races
       .filter(race => race.status !== 'completed')
       .map(race => ({
         id: race.id,
         title: `${race.track} - ${race.car}`,
         scheduledTime: race.scheduledAt,
         status: race.status,
       }));

     const completedRaces = dto.races
       .filter(race => race.status === 'completed')
       .map(race => ({
         id: race.id,
         title: `${race.track} - ${race.car}`,
         scheduledTime: race.scheduledAt,
         status: race.status,
       }));

     return {
       upcomingRaces,
       completedRaces,
       totalCount: dto.races.length,
     };
   }

  /**
   * Find races by league ID
   */
  async findByLeagueId(leagueId: string): Promise<any[]> {
    // Assuming the API has /races?leagueId=...
    // TODO: Update when API is implemented
    const dto = await this.apiClient.get('/races?leagueId=' + leagueId) as { races: any[] };
    return dto.races;
  }
}