Feature: Deleting an article never deletes images

  As an authenticated RenewCMS user
  I want deleting an article to leave the media library alone
  So that an image used by other articles, or waiting in the library, is never lost

  Background:
    Given images belong to the library and internal/domain/article.Article carries no Images
    And DeleteArticleUseCase depends only on article.Repository and calls its Delete
    And api/dependecyInjection.go builds useCases.NewDeleteArticleUseCase(repos.ArticleRepo)
    And DELETE /v1/article/{id} stays behind the same jwtauth group, answering 204 with an
      empty body, 404 with apperr.ArticleNotFoundErrorMessage for errors.Is(err,
      article.ErrArticleNotFound), and the generic 500 "Failed to delete article" otherwise

  Scenario: Deleting an article leaves every image it used
    Given a valid jwt cookie for user 1
    And article 1 whose body contains the urls of images 10 and 11
    And the image repository contains images 10 and 11
    When the client sends DELETE /v1/article/1
    Then the response status is 204
    And the article repository no longer contains article 1
    And the image repository still contains images 10 and 11 and Delete was never called

  Scenario: Deleting an unknown article is 404 and touches no image
    Given a valid jwt cookie for user 1 and no article 9999
    When the client sends DELETE /v1/article/9999
    Then the response status is 404 and the body is "Article not found"
    And the image repository is untouched

  Scenario: Deleting still requires authentication
    Given no jwt cookie
    When the client sends DELETE /v1/article/1
    Then the response status is 401 and article 1 and image 10 still exist

  Scenario: An article repository failure is 500 and everything stays
    Given the article repository's Delete fails
    When the client sends DELETE /v1/article/1 with a valid cookie
    Then the response status is 500 and the body is "Failed to delete article"
    And the image repository is untouched