presenter refactoring

apps/api/src/domain/league/presenters/JoinLeaguePresenter.ts

@@ -1,9 +1,21 @@
 import type { JoinLeagueOutputPort } from '@core/racing/application/ports/output/JoinLeagueOutputPort';
 import type { JoinLeagueOutputDTO } from '../dtos/JoinLeagueOutputDTO';
 
-export function mapJoinLeagueOutputPortToDTO(port: JoinLeagueOutputPort): JoinLeagueOutputDTO {
-  return {
-    success: true,
-    membershipId: port.membershipId,
-  };
+export class JoinLeaguePresenter {
+  private result: JoinLeagueOutputDTO | null = null;
+
+  reset() {
+    this.result = null;
+  }
+
+  present(output: JoinLeagueOutputPort) {
+    this.result = {
+      success: true,
+      membershipId: output.membershipId,
+    };
+  }
+
+  getViewModel(): JoinLeagueOutputDTO | null {
+    return this.result;
+  }
 }