def authenticate_user(username: str, password: str, repo: AbstractRepository):
authenticated = False
user = repo.get_user(username)
if user is not None:
authenticated = check_password_hash(user.password, password)
if not authenticated:
raise AuthenticationException
def add_user(username: str, password: str, repo: AbstractRepository):
# Check that the given username is available.
user = repo.get_user(username)
if user is not None:
raise NameNotUniqueException
# Encrypt password so that the database doesn't store passwords 'in the clear'.
password_hash = generate_password_hash(password)
# Create and store the new User, with password encrypted.
user = User(username, password_hash)
repo.add_user(user)
def add_review(rank: int, review_txt: str, rating: int, username: str,
repo: AbstractRepository):
# Check that the movie exists.
movie = repo.get_movie(rank)
if movie is None:
raise NonExistentMovieException
user = repo.get_user(username)
if user is None:
raise UnknownUserException
# Create review.
review = Review(movie, review_txt, rating)
# Update the repository.
repo.add_review(review)
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)
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 add_review(rate: int, rank: int, review_text: str, username: str,
repo: AbstractRepository):
# Check that the article exists.
movie = repo.get_movie(int(rank))
print(movie)
if movie is None:
raise NonExistentMovieException
user = repo.get_user(username)
if user is None:
raise UnknownUserException
timestamp = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
print(timestamp)
# Create comment.
review = make_review(review_text, user, movie, timestamp, rate)
# Update the repository.
repo.add_review(review)
def get_user(username: str, repo: AbstractRepository):
user = repo.get_user(username)
if user is None:
raise UnknownUserException
return user_to_dict(user)