/**
 * Application Use Case: GetSponsorUseCase
 *
 * Retrieves a single sponsor by ID.
 */

import type { ISponsorRepository } from '../../domain/repositories/ISponsorRepository';
import { Result } from '@core/shared/application/Result';
import type { ApplicationErrorCode } from '@core/shared/errors/ApplicationErrorCode';

export interface GetSponsorQueryParams {
  sponsorId: string;
}

export class GetSponsorUseCase {
  constructor(
    private readonly sponsorRepository: ISponsorRepository,
  ) {}

  async execute(params: GetSponsorQueryParams): Promise<Result<{ sponsor: { id: string; name: string; logoUrl?: string; websiteUrl?: string } } | null, ApplicationErrorCode<'REPOSITORY_ERROR'>>> {
    try {
      const sponsor = await this.sponsorRepository.findById(params.sponsorId);

      if (!sponsor) {
        return Result.ok(null);
      }

      const sponsorData = {
        id: sponsor.id,
        name: sponsor.name,
        logoUrl: sponsor.logoUrl,
        websiteUrl: sponsor.websiteUrl,
      };

      return Result.ok({ sponsor: sponsorData });
    } catch {
      return Result.err({ code: 'REPOSITORY_ERROR', message: 'Failed to fetch sponsor' });
    }
  }
}