import { Result } from '../../shared/result/Result';
import { RaceCreationResult } from '../../domain/value-objects/RaceCreationResult';
import type { ICheckoutService } from '../ports/ICheckoutService';

export class CompleteRaceCreationUseCase {
  constructor(private readonly checkoutService: ICheckoutService) {}

  async execute(sessionId: string): Promise<Result<RaceCreationResult>> {
    if (!sessionId || sessionId.trim() === '') {
      return Result.err(new Error('Session ID is required'));
    }

    const infoResult = await this.checkoutService.extractCheckoutInfo();
    
    if (infoResult.isErr()) {
      return Result.err(infoResult.unwrapErr());
    }

    const info = infoResult.unwrap();

    if (!info.price) {
      return Result.err(new Error('Could not extract price from checkout page'));
    }

    try {
      const raceCreationResult = RaceCreationResult.create({
        sessionId,
        price: info.price.toDisplayString(),
        timestamp: new Date(),
      });

      return Result.ok(raceCreationResult);
    } catch (error) {
      const err = error instanceof Error ? error : new Error('Unknown error');
      return Result.err(err);
    }
  }
}