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

export interface UpdateDriverProfileInput {
  driverId: string;
  bio?: string;
  country?: string;
}

/**
 * Application use case responsible for updating basic driver profile details.
 * Encapsulates domain entity mutation and returns the updated entity.
 * Mapping to DTOs is handled by presenters in the presentation layer.
 */
export class UpdateDriverProfileUseCase {
  constructor(private readonly driverRepository: IDriverRepository) {}

  async execute(input: UpdateDriverProfileInput): Promise<Result<Driver, ApplicationErrorCode<'DRIVER_NOT_FOUND'>>> {
    const { driverId, bio, country } = input;

    const existing = await this.driverRepository.findById(driverId);
    if (!existing) {
      return Result.err({ code: 'DRIVER_NOT_FOUND' });
    }

    const updated = existing.update({
      ...(bio !== undefined ? { bio } : {}),
      ...(country !== undefined ? { country } : {}),
    });

    const persisted = await this.driverRepository.update(updated);
    return Result.ok(persisted);
  }
}