def get_movie(movie_id: int, repo: AbstractRepository):
movie = repo.get_movie_by_index(movie_id)
if movie is None:
raise NonExistentMovieException
return movie_to_dict(movie)
def get_reviews_for_movie(movie_id, repo: AbstractRepository):
movie = repo.get_movie_by_index(movie_id)
if movie is None:
raise NonExistentMovieException
return reviews_to_dict(movie.reviews)
def add_review(review_text: str, username: str, movie_id: int, rating: int, repo: AbstractRepository):
# Check that the movie exists.
movie = repo.get_movie_by_index(movie_id)
if movie is None:
raise NonExistentMovieException
# Check that the user exists
user = repo.get_user(username)
if user is None:
raise UnknownUserException
# Create review
review = make_review(review_text=review_text, user=user, movie=movie, rating=rating)
# Update the repository
repo.add_review(review)