refactor use cases

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

@@ -1,41 +1,32 @@
-import type { ILeagueRepository } from '../../domain/repositories/ILeagueRepository';
-import { Result } from '@core/shared/application/Result';
 import type { ApplicationErrorCode } from '@core/shared/errors/ApplicationErrorCode';
-import type { UseCaseOutputPort } from '@core/shared/application';
+import { Result } from '@core/shared/application/Result';
+import type { ILeagueRepository } from '../../domain/repositories/ILeagueRepository';
 
-export type GetTotalLeaguesInput = {};
-
-export type GetTotalLeaguesResult = {
-  totalLeagues: number;
-};
+export interface GetTotalLeaguesInput {}
 
 export type GetTotalLeaguesErrorCode = 'REPOSITORY_ERROR';
 
+export interface GetTotalLeaguesResult {
+  totalLeagues: number;
+}
+
 export class GetTotalLeaguesUseCase {
-  constructor(
-    private readonly leagueRepository: ILeagueRepository,
-    private readonly output: UseCaseOutputPort<GetTotalLeaguesResult>,
-  ) {}
+  constructor(private readonly leagueRepository: ILeagueRepository) {}
 
   async execute(
     _input: GetTotalLeaguesInput,
-  ): Promise<Result<void, ApplicationErrorCode<GetTotalLeaguesErrorCode, { message: string }>>> {
-    void _input;
+  ): Promise<Result<GetTotalLeaguesResult, ApplicationErrorCode<GetTotalLeaguesErrorCode, { message: string }>>> {
     try {
       const leagues = await this.leagueRepository.findAll();
-      const result: GetTotalLeaguesResult = { totalLeagues: leagues.length };
+      const totalLeagues = leagues.length;
 
-      this.output.present(result);
-
-      return Result.ok(undefined);
-    } catch (err) {
-      const error = err as { message?: string } | undefined;
+      return Result.ok({ totalLeagues });
+    } catch (error: unknown) {
+      const message = error instanceof Error ? error.message : 'Failed to get total leagues';
 
       return Result.err({
         code: 'REPOSITORY_ERROR',
-        details: {
-          message: error?.message ?? 'Failed to compute total leagues',
-        },
+        details: { message },
       });
     }
   }