refactor

core/identity/application/use-cases/GetUserUseCase.ts

@@ -2,7 +2,7 @@ import { User } from '../../domain/entities/User';
 import { IUserRepository } from '../../domain/repositories/IUserRepository';
 import { Result } from '@core/shared/application/Result';
 import type { ApplicationErrorCode } from '@core/shared/errors/ApplicationErrorCode';
-import type { UseCaseOutputPort, Logger } from '@core/shared/application';
+import type { UseCaseOutputPort, Logger, UseCase } from '@core/shared/application';
 
 export type GetUserInput = {
   userId: string;
@@ -19,28 +19,29 @@ export type GetUserApplicationError = ApplicationErrorCode<
   { message: string }
 >;
 
-export class GetUserUseCase {
+export class GetUserUseCase implements UseCase<GetUserInput, GetUserResult, GetUserErrorCode> {
   constructor(
     private readonly userRepo: IUserRepository,
     private readonly logger: Logger,
-    private readonly output: UseCaseOutputPort<GetUserResult>,
+    private readonly output: UseCaseOutputPort<Result<GetUserResult, GetUserApplicationError>>,
   ) {}
 
-  async execute(input: GetUserInput): Promise<Result<void, GetUserApplicationError>> {
+  async execute(input: GetUserInput): Promise<Result<GetUserResult, GetUserApplicationError>> {
     try {
       const stored = await this.userRepo.findById(input.userId);
       if (!stored) {
-        return Result.err({
+        const result = Result.err<GetUserResult, GetUserApplicationError>({
           code: 'USER_NOT_FOUND',
           details: { message: 'User not found' },
-        } as GetUserApplicationError);
+        });
+        this.output.present(result);
+        return result;
       }
 
       const user = User.fromStored(stored);
-      const result: GetUserResult = { user };
+      const result = Result.ok<GetUserResult, GetUserApplicationError>({ user });
       this.output.present(result);
-
-      return Result.ok(undefined);
+      return result;
     } catch (error) {
       const message =
         error instanceof Error && error.message ? error.message : 'Failed to get user';
@@ -49,10 +50,12 @@ export class GetUserUseCase {
         input,
       });
 
-      return Result.err({
+      const result = Result.err<GetUserResult, GetUserApplicationError>({
         code: 'REPOSITORY_ERROR',
         details: { message },
-      } as GetUserApplicationError);
+      });
+      this.output.present(result);
+      return result;
     }
   }
 }