refactor use cases

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

@@ -1,41 +1,28 @@
-import type { UseCase, UseCaseOutputPort } from '@core/shared/application';
 import { Result } from '@core/shared/application/Result';
 import type { ApplicationErrorCode } from '@core/shared/errors/ApplicationErrorCode';
 import type { IDriverRepository } from '../../domain/repositories/IDriverRepository';
 
-/**
- * Input type for retrieving total number of drivers.
- */
-export type GetTotalDriversInput = {};
-
-/**
- * Domain result model for the total number of drivers.
- */
-export type GetTotalDriversResult = {
-  totalDrivers: number;
-};
+export interface GetTotalDriversInput {}
 
 export type GetTotalDriversErrorCode = 'REPOSITORY_ERROR';
 
-export class GetTotalDriversUseCase implements UseCase<GetTotalDriversInput, void, GetTotalDriversErrorCode> {
-  constructor(
-    private readonly driverRepository: IDriverRepository,
-    private readonly output: UseCaseOutputPort<GetTotalDriversResult>,
-  ) {}
+export interface GetTotalDriversResult {
+  totalDrivers: number;
+}
+
+export class GetTotalDriversUseCase {
+  constructor(private readonly driverRepository: IDriverRepository) {}
 
   async execute(
     _input: GetTotalDriversInput,
-  ): Promise<Result<void, ApplicationErrorCode<GetTotalDriversErrorCode, { message: string }>>> {
-    void _input;
+  ): Promise<Result<GetTotalDriversResult, ApplicationErrorCode<GetTotalDriversErrorCode, { message: string }>>> {
     try {
       const drivers = await this.driverRepository.findAll();
-      const result: GetTotalDriversResult = { totalDrivers: drivers.length };
+      const totalDrivers = drivers.length;
 
-      this.output.present(result);
-
-      return Result.ok(void 0);
-    } catch (error) {
-      const message = (error as Error | undefined)?.message ?? 'Failed to compute total drivers';
+      return Result.ok({ totalDrivers });
+    } catch (error: unknown) {
+      const message = error instanceof Error ? error.message : 'Failed to get total drivers';
 
       return Result.err({
         code: 'REPOSITORY_ERROR',