league service

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

@@ -0,0 +1,20 @@
+import type { ILeagueRepository } from '../../domain/repositories/ILeagueRepository';
+import type { IGetTotalLeaguesPresenter, GetTotalLeaguesResultDTO, GetTotalLeaguesViewModel } from '../presenters/IGetTotalLeaguesPresenter';
+import type { UseCase } from '@gridpilot/shared/application/UseCase';
+
+export interface GetTotalLeaguesUseCaseParams {}
+
+export interface GetTotalLeaguesResultDTO {
+  totalLeagues: number;
+}
+
+export class GetTotalLeaguesUseCase implements UseCase<GetTotalLeaguesUseCaseParams, GetTotalLeaguesResultDTO, GetTotalLeaguesViewModel, IGetTotalLeaguesPresenter> {
+  constructor(private readonly leagueRepository: ILeagueRepository) {}
+
+  async execute(params: GetTotalLeaguesUseCaseParams, presenter: IGetTotalLeaguesPresenter): Promise<void> {
+    const leagues = await this.leagueRepository.findAll();
+    const dto: GetTotalLeaguesResultDTO = { totalLeagues: leagues.length };
+    presenter.reset();
+    presenter.present(dto);
+  }
+}