def add_to_watchlist(movie_id: int, username: str, repo: AbstractRepository):
if repo.get_user(username) is None:
raise UnknownUserException
if repo.get_movie(movie_id) is None:
raise NonExistentMovieException
repo.add_to_watchlist(repo.get_movie(movie_id), repo.get_user(username))
def get_movie(movie_id: int, repo: AbstractRepository):
movie = repo.get_movie(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(movie_id)
if movie is None:
raise NonExistentMovieException
return reviews_to_dict(movie.reviews)
def add_to_watchlist(movie_id: int, username: str, repo: AbstractRepository):
movie = repo.get_movie(movie_id)
# if movie is None:
# raise NonExistentMovieException
user = repo.get_user(username)
# if user is None:
# raise UnknownUserException
repo.add_to_watchlist(movie, user)
def remove_from_watchlist(movie_id: int, username: str,
repo: AbstractRepository):
movie = repo.get_movie(movie_id)
if movie is None:
raise NonExistentMovieException
user = repo.get_user(username)
if user is None:
raise UnknownUserException
repo.remove_from_watchlist(movie, user)
def add_review(movie_id: int, review_text: str, username: str,
repo: AbstractRepository):
movie = repo.get_movie(movie_id)
if movie is None:
raise NonExistentMovieException
user = repo.get_user(username)
if user is None:
raise UnknownUserException
review = make_review(review_text=review_text, user=user, movie=movie)
repo.add_review(review)
return review_to_dict(review)
def add_review(movie_id: int, review_text: str, username: str, repo: AbstractRepository):
# Check that the movie exists.
movie = repo.get_movie(movie_id)
if movie is None:
raise NonExistentMovieException
user = repo.get_user(username)
if user is None:
raise UnknownUserException
# Create review.
review = make_review(review_text, user, movie)
# Update the repository.
repo.add_review(review)
def get_movie_by_a_rank(rank, repo: AbstractRepository):
movie = repo.get_movie(rank)
movie_dict = movie_to_dict(movie)
prev_rank = next_rank = None
if movie.rank == 1:
prev_rank = None
next_rank = 4
elif movie.rank == 1000:
prev_rank = 997
next_rank = None
elif 1 < movie.rank < 1000:
prev_rank = movie.rank - 3
next_rank = movie.rank + 3
return movie_dict, prev_rank, next_rank
