def get_comments_for_article(article_id, repo: AbstractRepository):
article = repo.get_movie(article_id)
if article is None:
raise NonExistentArticleException
return reviews_to_dict(article.review)
def get_movie(article_id: int, repo: AbstractRepository):
article = repo.get_movie(article_id)
if article is None:
raise NonExistentArticleException
return article_to_dict(article)
def get_comments_for_movie(movie_id, repo: AbstractRepository):
movie = repo.get_movie(movie_id)
if movie is None:
raise NonExistentMovieException
return comments_to_dict(movie.comments)
def get_movie(movie_rank: int, repo: AbstractRepository):
movie = repo.get_movie(movie_rank)
if movie is None:
raise NonExistentMovieException
return movie_to_dict(movie)
def add_comment(movie_rank: int, comment_text: str, username: str, repo: AbstractRepository):
# Check that the movie exists.
movie = repo.get_movie(movie_rank)
if movie is None:
raise NonExistentMovieException
user = repo.get_user(username)
if user is None:
raise UnknownUserException
# Create comment.
comment = make_comment(comment_text, user, movie)
# Update the repository.
repo.add_comment(comment)
def add_review(article_id: int, comment_text: str, username: str,
repo: AbstractRepository):
# Check that the article exists.
article = repo.get_movie(article_id)
if article is None:
raise NonExistentArticleException
user = repo.get_user(username)
if user is None:
raise UnknownUserException
# Create comment.
comment = make_comment(comment_text, user, article)
# Update the repository.
repo.add_review(comment)