refactor api modules

apps/api/src/domain/race/presenters/CommandResultPresenter.ts

@@ -7,19 +7,19 @@ export interface CommandResultDTO {
   message?: string;
 }
 
-export type CommandApplicationError<E extends string = string> = ApplicationErrorCode<
-  E,
+export type CommandApplicationError = ApplicationErrorCode<
+  string,
   { message: string }
 >;
 
-export class CommandResultPresenter<E extends string = string> {
+export class CommandResultPresenter {
   private model: CommandResultDTO | null = null;
 
   reset(): void {
     this.model = null;
   }
 
-  present(result: Result<unknown, CommandApplicationError<E>>): void {
+  present(result: Result<unknown, CommandApplicationError>): void {
     if (result.isErr()) {
       const error = result.unwrapErr();
       this.model = {
@@ -36,7 +36,7 @@ export class CommandResultPresenter<E extends string = string> {
   presentSuccess(message?: string): void {
     this.model = {
       success: true,
-      message,
+      ...(message !== undefined && { message }),
     };
   }
 
@@ -44,7 +44,7 @@ export class CommandResultPresenter<E extends string = string> {
     this.model = {
       success: false,
       errorCode,
-      message,
+      ...(message !== undefined && { message }),
     };
   }
 
@@ -59,4 +59,8 @@ export class CommandResultPresenter<E extends string = string> {
 
     return this.model;
   }
+
+  get viewModel(): CommandResultDTO {
+    return this.responseModel;
+  }
 }