rename to core

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

@@ -0,0 +1,54 @@
+import type { ILeagueRepository } from '../../domain/repositories/ILeagueRepository';
+import type { ILeagueMembershipRepository } from '../../domain/repositories/ILeagueMembershipRepository';
+import type {
+  IAllLeaguesWithCapacityPresenter,
+  AllLeaguesWithCapacityResultDTO,
+  AllLeaguesWithCapacityViewModel,
+} from '../presenters/IAllLeaguesWithCapacityPresenter';
+import type { UseCase } from '@gridpilot/shared/application/UseCase';
+
+/**
+ * Use Case for retrieving all leagues with capacity information.
+ * Orchestrates domain logic and delegates presentation to the presenter.
+ */
+export class GetAllLeaguesWithCapacityUseCase
+  implements UseCase<void, AllLeaguesWithCapacityResultDTO, AllLeaguesWithCapacityViewModel, IAllLeaguesWithCapacityPresenter>
+{
+  constructor(
+    private readonly leagueRepository: ILeagueRepository,
+    private readonly leagueMembershipRepository: ILeagueMembershipRepository,
+  ) {}
+
+  async execute(
+    _input: void,
+    presenter: IAllLeaguesWithCapacityPresenter,
+  ): Promise<void> {
+    presenter.reset();
+
+    const leagues = await this.leagueRepository.findAll();
+
+    const memberCounts = new Map<string, number>();
+
+    for (const league of leagues) {
+      const members = await this.leagueMembershipRepository.getLeagueMembers(league.id);
+
+      const usedSlots = members.filter(
+        (m) =>
+          m.status === 'active' &&
+          (m.role === 'owner' ||
+            m.role === 'admin' ||
+            m.role === 'steward' ||
+            m.role === 'member'),
+      ).length;
+
+      memberCounts.set(league.id, usedSlots);
+    }
+
+    const dto: AllLeaguesWithCapacityResultDTO = {
+      leagues,
+      memberCounts,
+    };
+
+    presenter.present(dto);
+  }
+}