refactor dtos to ports

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

@@ -1,7 +1,8 @@
 import type { ILeagueMembershipRepository } from '../../domain/repositories/ILeagueMembershipRepository';
 import type { IRaceRepository } from '../../domain/repositories/IRaceRepository';
 import type { LeagueStatsViewModel } from '../presenters/ILeagueStatsPresenter';
-import type { DriverRatingProvider } from '../ports/DriverRatingProvider';
+import type { GetDriverRatingInputPort } from '../ports/input/GetDriverRatingInputPort';
+import type { GetDriverRatingOutputPort } from '../ports/output/GetDriverRatingOutputPort';
 import { Result } from '@core/shared/application/Result';
 import type { ApplicationErrorCode } from '@core/shared/errors/ApplicationErrorCode';
 
@@ -13,7 +14,7 @@ export class GetLeagueStatsUseCase {
   constructor(
     private readonly leagueMembershipRepository: ILeagueMembershipRepository,
     private readonly raceRepository: IRaceRepository,
-    private readonly driverRatingProvider: DriverRatingProvider,
+    private readonly getDriverRating: (input: GetDriverRatingInputPort) => Promise<GetDriverRatingOutputPort>,
   ) {}
 
   async execute(params: GetLeagueStatsUseCaseParams): Promise<Result<LeagueStatsViewModel, ApplicationErrorCode<'REPOSITORY_ERROR'>>> {
@@ -21,9 +22,19 @@ export class GetLeagueStatsUseCase {
       const memberships = await this.leagueMembershipRepository.getLeagueMembers(params.leagueId);
       const races = await this.raceRepository.findByLeagueId(params.leagueId);
       const driverIds = memberships.map(m => m.driverId);
-      const ratings = this.driverRatingProvider.getRatings(driverIds);
-      const validRatings = Array.from(ratings.values()).filter(r => r !== null) as number[];
+      
+      // Get ratings for all drivers using clean ports
+      const ratingPromises = driverIds.map(driverId => 
+        this.getDriverRating({ driverId })
+      );
+      
+      const ratingResults = await Promise.all(ratingPromises);
+      const validRatings = ratingResults
+        .map(result => result.rating)
+        .filter((rating): rating is number => rating !== null);
+      
       const averageRating = validRatings.length > 0 ? Math.round(validRatings.reduce((sum, r) => sum + r, 0) / validRatings.length) : 0;
+      
       const viewModel: LeagueStatsViewModel = {
         totalMembers: memberships.length,
         totalRaces: races.length,