refactor

core/racing/application/use-cases/GetTotalRacesUseCase.ts

@@ -1,20 +1,26 @@
 import type { IRaceRepository } from '../../domain/repositories/IRaceRepository';
-import type { IGetTotalRacesPresenter, GetTotalRacesResultDTO, GetTotalRacesViewModel } from '../presenters/IGetTotalRacesPresenter';
-import type { UseCase } from '@core/shared/application/UseCase';
+import type { GetTotalRacesResultDTO } from '../presenters/IGetTotalRacesPresenter';
+import { Result } from '@core/shared/application/Result';
+import type { ApplicationErrorCode } from '@core/shared/errors/ApplicationErrorCode';
+import type { AsyncUseCase } from '@core/shared/application';
+import type { Logger } from '@core/shared/application';
 
-export interface GetTotalRacesUseCaseParams {}
+export class GetTotalRacesUseCase implements AsyncUseCase<void, GetTotalRacesResultDTO, 'REPOSITORY_ERROR'>
+{
+  constructor(
+    private readonly raceRepository: IRaceRepository,
+    private readonly logger: Logger,
+  ) {}
 
-export interface GetTotalRacesResultDTO {
-  totalRaces: number;
-}
+  async execute(): Promise<Result<GetTotalRacesResultDTO, ApplicationErrorCode<'REPOSITORY_ERROR'>>> {
+    try {
+      const races = await this.raceRepository.findAll();
+      const dto: GetTotalRacesResultDTO = { totalRaces: races.length };
 
-export class GetTotalRacesUseCase implements UseCase<GetTotalRacesUseCaseParams, GetTotalRacesResultDTO, GetTotalRacesViewModel, IGetTotalRacesPresenter> {
-  constructor(private readonly raceRepository: IRaceRepository) {}
-
-  async execute(params: GetTotalRacesUseCaseParams, presenter: IGetTotalRacesPresenter): Promise<void> {
-    const races = await this.raceRepository.findAll();
-    const dto: GetTotalRacesResultDTO = { totalRaces: races.length };
-    presenter.reset();
-    presenter.present(dto);
+      return Result.ok(dto);
+    } catch (error) {
+      this.logger.error('Error retrieving total races', error as Error);
+      return Result.err({ code: 'REPOSITORY_ERROR', details: { message: 'Failed to retrieve total races' } });
+    }
   }
 }