wip

src/modules/article/application/use-cases/get-article/get-article.use-case.ts

@@ -0,0 +1,27 @@
+import { Inject, Injectable } from '@nestjs/common';
+import {
+  ARTICLE_REPOSITORY,
+  type IArticleRepository,
+} from '../../../domain/repositories/article.repository.interface.js';
+import { ArticleNotFoundException } from '../../../domain/exceptions/article-not-found.exception.js';
+import { GetArticleQuery } from './get-article.query.js';
+import { ArticleDto } from '../../dto/article.dto.js';
+import { ArticleApplicationMapper } from '../../mappers/article-application.mapper.js';
+
+@Injectable()
+export class GetArticleUseCase {
+  constructor(
+    @Inject(ARTICLE_REPOSITORY)
+    private readonly articleRepository: IArticleRepository,
+  ) {}
+
+  async execute(query: GetArticleQuery): Promise<ArticleDto> {
+    const article = await this.articleRepository.findById(query.id);
+
+    if (!article) {
+      throw new ArticleNotFoundException(query.id);
+    }
+
+    return ArticleApplicationMapper.toDto(article);
+  }
+}