import { RaceDetailLeagueDTO } from '../types/generated/RaceDetailLeagueDTO';
import { RaceDetailRaceDTO } from '../types/generated/RaceDetailRaceDTO';
import { RaceDetailRegistrationDTO } from '../types/generated/RaceDetailRegistrationDTO';
import { RaceDetailUserResultDTO } from '../types/generated/RaceDetailUserResultDTO';
import { RaceDetailEntryDTO } from '../types/generated/RaceDetailEntryDTO';
import { RaceDetailEntryViewModel } from './RaceDetailEntryViewModel';
import { RaceDetailUserResultViewModel } from './RaceDetailUserResultViewModel';

export class RaceDetailViewModel {
  race: RaceDetailRaceDTO | null;
  league: RaceDetailLeagueDTO | null;
  entryList: RaceDetailEntryViewModel[];
  registration: RaceDetailRegistrationDTO;
  userResult: RaceDetailUserResultViewModel | null;
  error?: string;

  constructor(dto: {
    race: RaceDetailRaceDTO | null;
    league: RaceDetailLeagueDTO | null;
    entryList: RaceDetailEntryDTO[];
    registration: RaceDetailRegistrationDTO;
    userResult: RaceDetailUserResultDTO | null;
    error?: string;
  }, currentDriverId: string) {
    this.race = dto.race;
    this.league = dto.league;
    this.entryList = dto.entryList.map(entry => new RaceDetailEntryViewModel(entry, currentDriverId));
    this.registration = dto.registration;
    this.userResult = dto.userResult ? new RaceDetailUserResultViewModel(dto.userResult) : null;
    this.error = dto.error;
  }

  /** UI-specific: Whether user is registered */
  get isRegistered(): boolean {
    return this.registration.isUserRegistered;
  }

  /** UI-specific: Whether user can register */
  get canRegister(): boolean {
    return this.registration.canRegister;
  }

  /** UI-specific: Race status display */
  get raceStatusDisplay(): string {
    if (!this.race) return 'Unknown';
    switch (this.race.status) {
      case 'upcoming': return 'Upcoming';
      case 'live': return 'Live';
      case 'finished': return 'Finished';
      default: return this.race.status;
    }
  }

  /** UI-specific: Formatted scheduled time */
  get formattedScheduledTime(): string {
    return this.race ? new Date(this.race.scheduledAt).toLocaleString() : '';
  }

  /** UI-specific: Entry list count */
  get entryCount(): number {
    return this.entryList.length;
  }

  /** UI-specific: Whether race has results */
  get hasResults(): boolean {
    return this.userResult !== null;
  }

  /** UI-specific: Registration status message */
  get registrationStatusMessage(): string {
    if (this.isRegistered) return 'You are registered for this race';
    if (this.canRegister) return 'You can register for this race';
    return 'Registration not available';
  }

  /** UI-specific: Whether race can be re-opened */
  get canReopenRace(): boolean {
    if (!this.race) return false;
    return this.race.status === 'completed' || this.race.status === 'cancelled';
  }
}