def get_reviews_for_movie(movie_title, movie_year, repo: AbstractRepository):
movie = repo.get_movie_by_title_and_year(movie_title, movie_year)
if movie is None:
raise NonExistentMovieException
return reviews_to_dict(movie.reviews)
def get_movie_by_title_and_year(title: str, year: int, repo: AbstractRepository):
movie = repo.get_movie_by_title_and_year(title, year)
if movie is None:
raise NonExistentMovieException
return movie_to_dict(movie)
def remove_movie_from_watchlist(username: str, movie_title: str,
movie_year: int, repo: AbstractRepository):
# Check user exists
user = repo.get_user(username)
if user is None:
raise UnknownUserException
# Check movie exists
movie = repo.get_movie_by_title_and_year(movie_title, movie_year)
if movie is None:
raise NonExistentMovieException
repo.remove_movie_from_user_watchlist(user, movie)
def add_review(movie_title: str, movie_year: int, username: str, review_text: str, rating: int, repo: AbstractRepository):
# Check movie and user exists
movie = repo.get_movie_by_title_and_year(movie_title, movie_year)
if movie is None:
raise NonExistentMovieException
user = repo.get_user(username)
if user is None:
raise UnknownUserException
# Create review
review = make_review(user, movie, review_text, rating)
# Add review
repo.add_review(review)