refactor to adapters

core/league/application/ports/ILeagueStandingsRepository.ts

@@ -0,0 +1,16 @@
+export interface RawStanding {
+  id: string;
+  leagueId: string;
+  driverId: string;
+  position: number;
+  points: number;
+  wins: number;
+  racesCompleted: number;
+  // These properties might be optional or present depending on the data source
+  seasonId?: string;
+  podiums?: number;
+}
+
+export interface ILeagueStandingsRepository {
+  getLeagueStandings(leagueId: string): Promise<RawStanding[]>;
+}

core/league/application/use-cases/GetLeagueStandingsUseCase.ts

@@ -0,0 +1,20 @@
+export interface GetLeagueStandingsUseCase {
+  execute(leagueId: string): Promise<LeagueStandingsViewModel>;
+}
+
+export interface StandingItemViewModel {
+  id: string;
+  leagueId: string;
+  seasonId: string;
+  driverId: string;
+  position: number;
+  points: number;
+  wins: number;
+  podiums: number;
+  racesCompleted: number;
+}
+
+export interface LeagueStandingsViewModel {
+  leagueId: string;
+  standings: StandingItemViewModel[];
+}

core/league/application/use-cases/GetLeagueStandingsUseCaseImpl.ts

@@ -0,0 +1,29 @@
+import { GetLeagueStandingsUseCase, LeagueStandingsViewModel, StandingItemViewModel } from './GetLeagueStandingsUseCase';
+import { ILeagueStandingsRepository, RawStanding } from '../ports/ILeagueStandingsRepository';
+
+export class GetLeagueStandingsUseCaseImpl implements GetLeagueStandingsUseCase {
+  constructor(private repository: ILeagueStandingsRepository) {}
+
+  async execute(leagueId: string): Promise<LeagueStandingsViewModel> {
+    const rawStandings = await this.repository.getLeagueStandings(leagueId);
+
+    const standingItems: StandingItemViewModel[] = rawStandings.map((standing: RawStanding) => {
+      return {
+        id: standing.id,
+        leagueId: standing.leagueId,
+        seasonId: standing.seasonId ?? '',
+        driverId: standing.driverId,
+        position: standing.position,
+        points: standing.points,
+        wins: standing.wins,
+        podiums: standing.podiums ?? 0,
+        racesCompleted: standing.racesCompleted,
+      };
+    });
+
+    return {
+      leagueId: leagueId,
+      standings: standingItems,
+    };
+  }
+}