refactor

apps/api/src/domain/media/presenters/GetMediaPresenter.ts

@@ -1,24 +1,39 @@
-import type { IGetMediaPresenter, GetMediaResult } from '@core/media/application/presenters/IGetMediaPresenter';
+import type { Result } from '@core/shared/application/Result';
+import type { ApplicationErrorCode } from '@core/shared/errors/ApplicationErrorCode';
+import type { GetMediaResult, GetMediaErrorCode } from '@core/media/application/use-cases/GetMediaUseCase';
 import type { GetMediaOutputDTO } from '../dtos/GetMediaOutputDTO';
 
-// The HTTP-facing DTO (or null when not found)
-export type GetMediaViewModel = GetMediaOutputDTO | null;
+export type GetMediaResponseModel = GetMediaOutputDTO | null;
 
-export class GetMediaPresenter implements IGetMediaPresenter {
-  private result: GetMediaResult | null = null;
+export type GetMediaApplicationError = ApplicationErrorCode<
+  GetMediaErrorCode,
+  { message: string }
+>;
 
-  present(result: GetMediaResult) {
-    this.result = result;
+export class GetMediaPresenter {
+  private model: GetMediaResponseModel | null = null;
+
+  reset(): void {
+    this.model = null;
   }
 
-  get viewModel(): GetMediaViewModel {
-    if (!this.result || !this.result.success || !this.result.media) {
-      return null;
+  present(result: Result<GetMediaResult, GetMediaApplicationError>): void {
+    if (result.isErr()) {
+      const error = result.unwrapErr();
+
+      if (error.code === 'MEDIA_NOT_FOUND') {
+        this.model = null;
+        return;
+      }
+
+      throw new Error(error.details?.message ?? 'Failed to get media');
     }
 
-    const media = this.result.media;
+    const output = result.unwrap();
 
-    return {
+    const media = output.media;
+
+    this.model = {
       id: media.id,
       url: media.url,
       type: media.type,
@@ -28,4 +43,12 @@ export class GetMediaPresenter implements IGetMediaPresenter {
       size: media.size,
     };
   }
+
+  getResponseModel(): GetMediaResponseModel | null {
+    return this.model;
+  }
+
+  get responseModel(): GetMediaResponseModel {
+    return this.model ?? null;
+  }
 }