refactor racing use cases

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

@@ -1,30 +1,45 @@
 import type { IDriverRepository } from '../../domain/repositories/IDriverRepository';
-import type { TotalDriversOutputPort } from '../ports/output/TotalDriversOutputPort';
 import { Result } from '@core/shared/application/Result';
 import type { ApplicationErrorCode } from '@core/shared/errors/ApplicationErrorCode';
-import type { AsyncUseCase , Logger } from '@core/shared/application';
+import type { UseCaseOutputPort } from '@core/shared/application';
 
 /**
- * Use Case for retrieving total number of drivers.
+ * Input type for retrieving total number of drivers.
  */
-export class GetTotalDriversUseCase implements AsyncUseCase<void, TotalDriversOutputPort, 'REPOSITORY_ERROR'>
-{
+export type GetTotalDriversInput = {};
+
+/**
+ * Domain result model for the total number of drivers.
+ */
+export type GetTotalDriversResult = {
+  totalDrivers: number;
+};
+
+export type GetTotalDriversErrorCode = 'REPOSITORY_ERROR';
+
+export class GetTotalDriversUseCase {
   constructor(
     private readonly driverRepository: IDriverRepository,
-    private readonly logger: Logger,
+    private readonly output: UseCaseOutputPort<GetTotalDriversResult>,
   ) {}
 
-  async execute(): Promise<Result<TotalDriversOutputPort, ApplicationErrorCode<'REPOSITORY_ERROR'>>> {
+  async execute(
+    _input: GetTotalDriversInput,
+  ): Promise<Result<void, ApplicationErrorCode<GetTotalDriversErrorCode, { message: string }>>> {
     try {
       const drivers = await this.driverRepository.findAll();
-      const output: TotalDriversOutputPort = {
-        totalDrivers: drivers.length,
-      };
+      const result: GetTotalDriversResult = { totalDrivers: drivers.length };
 
-      return Result.ok(output);
+      this.output.present(result);
+
+      return Result.ok(undefined);
     } catch (error) {
-      this.logger.error('Error retrieving total drivers', error as Error);
-      return Result.err({ code: 'REPOSITORY_ERROR', details: { message: 'Failed to retrieve total drivers' } });
+      const message = (error as Error | undefined)?.message ?? 'Failed to compute total drivers';
+
+      return Result.err({
+        code: 'REPOSITORY_ERROR',
+        details: { message },
+      });
     }
   }
 }