def post(self, id):
'''
Leave a movie review
'''
TokenAuthenticator(request.headers.get('Authorization')).authenticate()
is_valid_integer(id)
validate_rating(request.json['rating'])
validate_review(request.json['review'])
session = Session()
movie = session.query(Movie).filter(Movie.movieID == id).one_or_none()
if not movie:
raise NotFound
query = session.query(MovieReview).filter(
MovieReview.movieID == id,
MovieReview.userID == g.userID).one_or_none()
if query:
# We disallow a user from leaving more than one review for the same movie.
raise Forbidden
query = session.query(Watchlist).filter(
Watchlist.movieID == id,
Watchlist.userID == g.userID).one_or_none()
if not query:
# When a user leaves a review for a film, we add that
# film to his Watchlist if it isn't there already.
session.add(Watchlist(id, g.userID))
request.json['rating'] = float(request.json['rating'])
session.add(
MovieReview(id, g.userID, request.json['rating'],
request.json['review']))
movie.ratings_sum += request.json['rating']
movie.review_count += 1
session.commit()
session.close()
return {'message': 'Review saved.'}, 201
def post(self, userID):
TokenAuthenticator(request.headers.get('Authorization')).authenticate()
session = Session()
is_valid_integer(userID)
# User not Found
if not session.query(User).filter(User.userID == userID).first():
raise NotFound
cID = g.userID
# Can't subscribe to oneself.
if cID == userID:
raise BadRequest
new = set(session.query(Wishlist.movieID).filter(Wishlist.userID == userID))
cur = set(session.query(Wishlist.movieID).filter(Wishlist.userID == cID))
# Add only absent movies
toAdd = new.difference(cur)
if toAdd:
for movie in toAdd:
for m in movie:
wl = Wishlist(m, cID)
session.add(wl)
session.commit()
session.close()
response = {'message': 'Wishlisted Movies imported'}
return response, 201
else:
response = {'message': 'No Movies were imported'}
return response, 200
def post(self):
'''
Add a FilmFinder to your Banned List.
'''
TokenAuthenticator(request.headers.get('Authorization')).authenticate()
is_valid_integer(request.json['userID'])
session = Session()
query = session.query(User).filter(
User.userID == request.json['userID']).one_or_none()
if not query:
raise NotFound
query = session.query(BannedList).filter(
BannedList.userID == g.userID,
BannedList.bannedUserID == request.json['userID']).one_or_none()
if query or g.userID == request.json['userID']:
# If the FilmFinder being banned is already in the user's Banned List,
# or if a user is attempting to ban himself, raise an Exception.
raise Forbidden
# Remove a user's subscription to a FilmFinder when banning that FilmFinder.
session.query(Subscription).filter(
Subscription.userID == g.userID,
Subscription.subscribedUserID == request.json['userID']).delete()
session.add(BannedList(g.userID, request.json['userID']))
session.commit()
session.close()
return {'message': 'Reviewer banned.'}, 201
def get(self):
'''
View list of movies in user's Watchlist
:return:
'''
TokenAuthenticator(request.headers.get('Authorization')).authenticate()
session = Session()
userID = g.userID
is_valid_integer(userID)
results = session.query(Movie.movieID, Movie.title, Movie.year, Movie.ratings_sum, \
Movie.review_count).filter(Watchlist.userID == userID) \
.filter(Watchlist.movieID == Movie.movieID)
movies = list()
for movieID, title, year, ratings_sum, review_count in results:
movies.append({
'movieID':
movieID,
'title':
title,
'year':
year,
'rating':
str(compute(movieID, userID, ratings_sum, review_count))
})
response = {'watchlist': movies}
return response, 200
def delete(self, id):
'''
Remove a FilmFinder from your Banned List.
'''
TokenAuthenticator(request.headers.get('Authorization')).authenticate()
is_valid_integer(id)
session = Session()
if not session.query(BannedList).filter(BannedList.userID == g.userID,
BannedList.bannedUserID
== id).delete():
# If the FilmFinder being unbanned is not in
# the user's Banned List, raise an Exception.
session.commit()
raise NotFound
session.commit()
session.close()
return {'message': 'Reviewer unbanned.'}, 200
def delete(self, movieID):
'''
Removes said movie from current user's Wishlist.
'''
TokenAuthenticator(request.headers.get('Authorization')).authenticate()
session = Session()
is_valid_integer(movieID)
affectedRows = session.query(Wishlist).filter(Wishlist.movieID == movieID)\
.filter(Wishlist.userID == g.userID).delete()
# When 0, it means either of movieID or userID are not present in database.
if affectedRows == 0:
raise NotFound
else:
session.commit()
session.close()
return 204
def get(self):
'''
Search for movies by name, description, mood, genre or director.
'''
TokenAuthenticator(request.headers.get('Authorization')).authenticate()
args = parser.parse_args()
page_size = args.get('page_size')
is_valid_integer(page_size)
page_index = args.get('page_index')
is_valid_integer(page_index)
name_keywords = validate_search_keywords(args.get('name'))
description_keywords = validate_search_keywords(args.get('description'))
director = validate_search_keywords(args.get('director'))
genre = args.get('genre')
mood = args.get('mood')
if mood:
genres = mood_mappings[mood] | {genre} if genre else mood_mappings[mood]
else:
genres = {genre} if genre else None
session = Session()
query = session.query(Movie.movieID, Movie.title, Movie.year,
Movie.ratings_sum, Movie.review_count
).filter(Movie.title.ilike(f'%{name_keywords}%'),
Movie.description.ilike(f'%{description_keywords}%')
).order_by(desc(Movie.average_rating(g.userID)), Movie.title)
count = session.query(Movie.movieID).filter(Movie.title.ilike(f'%{name_keywords}%'),
Movie.description.ilike(f'%{description_keywords}%')
)
if director:
query = query.join(FilmDirector).join(Person).filter(Person.name.ilike(f'%{director}%')).distinct()
count = count.join(FilmDirector).join(Person).filter(Person.name.ilike(f'%{director}%')).distinct()
if genres:
query = query.join(GenreOfFilm).join(Genres).filter(Genres.genre.in_(genres)).distinct()
count = count.join(GenreOfFilm).join(Genres).filter(Genres.genre.in_(genres)).distinct()
banned_users = tuple(banned_user for banned_user, in session.query(BannedList.bannedUserID)
.filter(BannedList.userID == g.userID)
)
search_results = [{'movieID': movieID, 'title': title, 'year': year,
'rating': str(compute(movieID, g.userID, ratings_sum, review_count, banned_users))
} for movieID, title, year, ratings_sum, review_count
in query.limit(page_size).offset(page_size * page_index)
]
return {'data': search_results, 'count': count.count()}, 200
def get(self, id):
'''
View a movie's full details.
'''
TokenAuthenticator(request.headers.get('Authorization')).authenticate()
is_valid_integer(id)
session = Session()
movie = session.query(Movie.movieID, Movie.title,
Movie.year, Movie.description,
Movie.ratings_sum, Movie.review_count
).filter(Movie.movieID == id).one_or_none()
if not movie:
raise NotFound
genres = [genre for genre, in session.query(Genres.genre).join(GenreOfFilm)
.filter(GenreOfFilm.movieID == id)
]
directors = [director for director, in session.query(Person.name)
.join(FilmDirector)
.filter(FilmDirector.movieID == id)
]
cast = [member for member, in session.query(Person.name).join(FilmCast)
.filter(FilmCast.movieID == id)
]
banned_users = tuple(banned_user for banned_user, in session.query(BannedList.bannedUserID)
.filter(BannedList.userID == g.userID)
)
reviews = session.query(User.userID, User.username,
MovieReview.rating, MovieReview.review
).join(MovieReview).filter(MovieReview.movieID == id,
User.userID.notin_(banned_users)
)
reviews = [{'userID': userID, 'username': username,
'rating': str(rating), 'review': review
} for userID, username, rating, review in reviews
]
return {'movieID': id, 'title': movie.title,
'year': movie.year, 'description': movie.description,
'genre': genres, 'director': directors, 'cast': cast,
'rating': str(compute(id, g.userID, movie.ratings_sum, movie.review_count, banned_users)),
'reviews': reviews
}, 200
def post(self):
'''
Adds a movie to the users' Watchlist.
'''
TokenAuthenticator(request.headers.get('Authorization')).authenticate()
movieID = request.json.get('movieID')
is_valid_integer(movieID)
new_watchlist = Watchlist(movieID, g.userID)
session = Session()
session.add(new_watchlist)
try:
session.commit()
session.close()
except IntegrityError: #If Watchlist already present
session.rollback()
raise BadRequest
response = {'message': 'Movie added to Watchlist.'}
return response, 201
def get(self, userID):
'''
View said user's Wishlist of movies.
'''
TokenAuthenticator(request.headers.get('Authorization')).authenticate()
session = Session()
is_valid_integer(userID)
results = session.query(Movie.movieID, Movie.title, Movie.year, Movie.ratings_sum, \
Movie.review_count).filter(Wishlist.userID == userID)\
.filter(Wishlist.movieID == Movie.movieID)
username = session.query(User.username).filter(User.userID == userID).first()
if not username:
raise NotFound
movies = list()
for movieID, title, year, ratings_sum, review_count in results:
movies.append({'movieID': movieID, 'title': title, 'year': year,
'rating': str(compute(movieID, g.userID, ratings_sum, review_count))
})
# Check if current user is subscribed to said user
res = session.query(Subscription).filter(Subscription.userID == g.userID) \
.filter(Subscription.subscribedUserID == userID).first()
session.close()
isSubscribed = False
if res:
isSubscribed = True
response = {'username': username, 'wishlist': movies, 'isSubscribed': isSubscribed}
return response, 200
def get(self, movieID):
TokenAuthenticator(request.headers.get('Authorization')).authenticate()
is_valid_integer(movieID)
userID = g.userID
args = parser.parse_args()
use_genre = args.get('use_genre')
use_director = args.get('use_director')
topMovieIds = list()
movies = list()
# Need this try/except block to catch errors when calling
# recommendations if dataframes haven't loaded yet.
try:
movie = current_app.movieDf
director = current_app.dirDf
genre = current_app.genDf
user = current_app.userDf
topMovieIds = movie_similarity_calc(movieID=movieID,
userID=userID,
movie=movie,
director=director,
genre=genre,
user=user,
use_genre=use_genre,
use_director=use_director)
session = Session()
result = session.query(Movie.movieID, Movie.title, Movie.year,
Movie.ratings_sum,
Movie.review_count).filter(
Movie.movieID.in_(topMovieIds)).all()
banned_users = tuple(banned_user for banned_user, in session.query(BannedList.bannedUserID)\
.filter(BannedList.userID == userID))
for id, title, year, ratings_sum, review_count in result:
movies.append({
'movieID':
id,
'title':
title,
'year':
year,
'rating':
compute(movieID, g.userID, ratings_sum, review_count,
banned_users)
})
movies.sort(key=lambda film: (-film['rating'], film['title']))
except ProgrammingError as pe:
print("Df hasn't loaded yet.")
except Exception as e:
print("Df hasn't loaded yet.")
response = {'movies': movies}
return response, 200
