def delete_instance(cls, post_id):
connection = Connection()
cursor = connection.start_database_connection()
cursor.execute("delete from postagem where id=%s", [post_id])
connection.close_database_connection()
def create_instance(cls, blocker_user_name, blocked_user_name):
connection = Connection()
cursor = connection.start_database_connection()
cursor.execute(
"insert into bloqueio(nome_bloqueador, nome_bloqueado) values (%s, %s)",
(blocker_user_name, blocked_user_name))
entity_instance = Block([blocker_user_name, blocked_user_name])
cursor.execute(
"delete from comentario where id_autor=%s and comentario.id_postagem in" \
" (select id from postagem where postagem.id_autor=%s)",
(blocker_user_name, blocked_user_name))
cursor.execute(
"delete from comentario where id_autor=%s and comentario.id_postagem in" \
" (select id from postagem where postagem.id_autor=%s)",
(blocked_user_name, blocker_user_name))
cursor.execute(
"delete from seguimento where nome_seguidor=%s and nome_seguido=%s",
(blocker_user_name, blocked_user_name))
cursor.execute(
"delete from seguimento where nome_seguidor=%s and nome_seguido=%s",
(blocked_user_name, blocker_user_name))
connection.close_database_connection()
return entity_instance
def delete_instance(cls, commentary_id):
connection = Connection()
cursor = connection.start_database_connection()
cursor.execute("delete from comentario where id=%s", [commentary_id])
connection.close_database_connection()
def _create_markups_from_this_post(self):
connection = Connection()
cursor = connection.start_database_connection()
for word in self.text.split(' '):
if '@' in word:
user_name = re.sub('[^0-9a-zA-Z_]+', '', word)
cursor.execute("select * from perfil where nome_usuario=%s",
[user_name])
user_exist = True if cursor.fetchall() else False
if user_exist:
cursor.execute(
"select * from marcacao_postagem where nome_perfil=%s and id_postagem=%s",
(user_name, self.post_id))
markup_already_exist = True if cursor.fetchall() else False
if not markup_already_exist:
cursor.execute(
"insert into marcacao_postagem(nome_perfil, id_postagem) values (%s, %s)",
(user_name, self.post_id))
connection._connection.commit()
Notification.create_instance(
user_name,
id_postmarkup_perfil=user_name,
id_postmarkup_post=self.post_id)
connection.close_database_connection()
def delete_instance(cls, follower, followed):
connection = Connection()
cursor = connection.start_database_connection()
cursor.execute(
"delete from seguimento where nome_seguidor=%s and nome_seguido=%s",
[follower.user_name, followed.user_name])
connection.close_database_connection()
def delete_instance(cls, blocker_user_name, blocked_user_name):
connection = Connection()
cursor = connection.start_database_connection()
cursor.execute(
"delete from bloqueio where nome_bloqueador=%s and nome_bloqueado=%s",
(blocker_user_name, blocked_user_name))
connection.close_database_connection()
def set_privacy(self, privacy: bool):
connection = Connection()
cursor = connection.start_database_connection()
self.privacy = privacy
cursor.execute(
"update perfil set privacidade=%s where nome_usuario=%s",
(privacy, self.user_name))
connection.close_database_connection()
def topic_exist(cls, name):
connection = Connection()
cursor = connection.start_database_connection()
cursor.execute("select * from topico where nome=%s", [name])
topic_exist = True if cursor.fetchall() else False
connection.close_database_connection()
return topic_exist
def block_exist(cls, blocker_user_name, blocked_user_name):
connection = Connection()
cursor = connection.start_database_connection()
cursor.execute(
"select * from bloqueio where nome_bloqueador=%s and nome_bloqueado=%s",
(blocker_user_name, blocked_user_name))
block_exist = True if cursor.fetchall() else False
connection.close_database_connection()
return block_exist
def follow_exist(cls, follower, followed):
connection = Connection()
cursor = connection.start_database_connection()
cursor.execute(
"select * from seguimento where nome_seguidor=%s and nome_seguido=%s",
[follower.user_name, followed.user_name])
follow_exist = True if cursor.fetchall() else False
connection.close_database_connection()
return follow_exist
def create_instance(cls, name):
connection = Connection()
cursor = connection.start_database_connection()
if cls.topic_exist(name):
raise RepeatedPrimaryKeyException()
cursor.execute("insert into topico(nome) values (%s)", [name])
connection.close_database_connection()
entity_instance = Topic()
entity_instance.name = name
return entity_instance
def get_post_instance(cls, post_id):
connection = Connection()
cursor = connection.start_database_connection()
cursor.execute("select * from postagem where id=%s", [post_id])
post_as_list = cursor.fetchall()[0]
if post_as_list:
post = Post(post_as_list)
else:
post = None
connection.close_database_connection()
return post
def get_commentary_instance(cls, commentary_id):
connection = Connection()
cursor = connection.start_database_connection()
cursor.execute("select * from comentario where id=%s", [commentary_id])
commentary_as_list = cursor.fetchall()[0]
if commentary_as_list:
commentary = Commentary(commentary_as_list)
else:
commentary = None
connection.close_database_connection()
return commentary
def get_user_instance(cls, user_name):
connection = Connection()
cursor = connection.start_database_connection()
cursor.execute("select * from perfil where nome_usuario=%s",
[user_name])
user_as_list = cursor.fetchall()[0]
if user_as_list:
user = User(user_as_list)
else:
user = None
connection.close_database_connection()
return user
def set_confirmation(self, confirmation: bool):
connection = Connection()
cursor = connection.start_database_connection()
self.confirmation = confirmation
cursor.execute(
"update seguimento set confirmacao=%s where nome_seguidor=%s and nome_seguido=%s",
(confirmation, self.follower_user_name, self.followed_user_name))
connection.close_database_connection()
Notification.create_instance(
self.follower_user_name,
notification_type='follow confirmation',
id_follow_follower=self.follower_user_name,
id_follow_followed=self.followed_user_name)
def get_topic_instance(cls, name):
connection = Connection()
cursor = connection.start_database_connection()
cursor.execute("select * from topico where nome=%s", [name])
topics_as_lists = cursor.fetchall()
if topics_as_lists:
topic = Topic()
topic.name = name
else:
topic = None
connection.close_database_connection()
return topic
def get_user_notifications(self):
connection = Connection()
cursor = connection.start_database_connection()
cursor.execute(
"select * from notificacao where id_perfil=%s order by data desc",
[self.user_name])
notifications_as_lists = cursor.fetchall()
notifications = []
for notification_as_list in notifications_as_lists:
notifications.append(Notification(notification_as_list))
connection.close_database_connection()
return notifications
def get_block_instance(cls, blocker_user_name, blocked_user_name):
connection = Connection()
cursor = connection.start_database_connection()
cursor.execute(
"select * from bloqueio where nome_bloqueador=%s and nome_bloqueado=%s",
(blocker_user_name, blocked_user_name))
block_as_list = cursor.fetchall()[0]
if block_as_list:
block_relationship = Block(block_as_list)
else:
block_relationship = None
connection.close_database_connection()
return block_relationship
def get_follow_instance(cls, follower_id, followed_id):
connection = Connection()
cursor = connection.start_database_connection()
cursor.execute(
"select * from seguimento where nome_seguidor=%s and nome_seguido=%s",
(follower_id, followed_id))
follow_as_list = cursor.fetchall()[0]
if follow_as_list:
follow_relationship = Follow(follow_as_list)
else:
follow_relationship = None
connection.close_database_connection()
return follow_relationship
def _create_topics_from_this_post(self):
connection = Connection()
cursor = connection.start_database_connection()
for word in self.text.split(' '):
if '#' in word:
word = re.sub('[^0-9a-zA-Z]+', '', word)
date = datetime.datetime.now()
if not Topic.topic_exist(word):
cursor.execute("insert into topico(nome) values (%s)",
[word])
cursor.execute(
"insert into topico_postagem(data, id_topico, id_postagem) values (%s, %s, %s)",
(date, word, self.post_id))
connection.close_database_connection()
def get_posts_from_topic(cls, topic_name):
connection = Connection()
cursor = connection.start_database_connection()
cursor.execute(
"select postagem.id, postagem.data, postagem.texto, postagem.foto, postagem.id_autor from topico_postagem" \
" left join postagem on topico_postagem.id_postagem = postagem.id" \
" where topico_postagem.id_topico=%s order by topico_postagem.data desc",
[topic_name])
posts_as_lists = cursor.fetchall()
posts = []
for post_as_list in posts_as_lists:
posts.append(Post(post_as_list))
connection.close_database_connection()
return posts.copy()
def get_commentary_from_topic(cls, topic_name):
connection = Connection()
cursor = connection.start_database_connection()
cursor.execute(
"select comentario.id, comentario.id_postagem, comentario.id_autor, comentario.data, comentario.texto from topico_comentario" \
" inner join comentario on topico_comentario.id_comentario = comentario.id" \
" where topico_comentario.id_topico=%s order by topico_comentario.data desc",
[topic_name])
commentaries_as_lists = cursor.fetchall()
commentaries = []
for commentary_as_list in commentaries_as_lists:
commentaries.append(Commentary(commentary_as_list))
connection.close_database_connection()
return commentaries
def create_instance(cls, post, text, user_author):
connection = Connection()
cursor = connection.start_database_connection()
date = datetime.datetime.now()
cursor.execute(
"insert into comentario(id_postagem, id_autor, data, texto) values (%s, %s, %s, %s) returning id",
(post.post_id, user_author.user_name, date, text))
commentary_id = cursor.fetchone()[0]
connection.close_database_connection()
entity_instance = Commentary(
[commentary_id, post.post_id, user_author.user_name, date, text])
entity_instance._create_topics_from_this_commentary()
entity_instance._create_markups_from_this_commentary()
return entity_instance
def get_user_followeds(self):
connection = Connection()
cursor = connection.start_database_connection()
user_name = str(self.user_name)
cursor.execute(
"select nome_usuario, nome_real, senha, biografia, privacidade" \
" from seguimento inner join perfil on seguimento.nome_seguido = perfil.nome_usuario " \
" where nome_seguidor=%s and confirmacao=%s",
(user_name, True))
followeds_as_list = cursor.fetchall()
followeds = []
for followed_as_list in followeds_as_list:
followeds.append(User(followed_as_list))
connection.close_database_connection()
return followeds
def create_instance(cls, text, image_path, user_author):
connection = Connection()
cursor = connection.start_database_connection()
date = datetime.datetime.now()
image_bytes = cls._image_bytes_from_path(image_path)
cursor.execute(
"insert into postagem(data, texto, foto, id_autor) values (%s, %s, %s, %s) returning id",
(date, text, image_bytes, user_author.user_name))
post_id = cursor.fetchone()[0]
connection.close_database_connection()
entity_instance = Post(
[post_id, date, text, image_bytes, user_author.user_name])
entity_instance._create_topics_from_this_post()
entity_instance._create_markups_from_this_post()
return entity_instance
def get_user_posts(self):
connection = Connection()
cursor = connection.start_database_connection()
cursor.execute(
"select postagem.id, data, texto, foto, id_autor from postagem" \
" left join seguimento on postagem.id_autor = seguimento.nome_seguido" \
" where id_autor=%s or id_autor=seguimento.nome_seguido" \
" order by data desc",
[self.user_name]
)
posts_as_lists = cursor.fetchall()
posts = []
for post_as_list in posts_as_lists:
posts.append(Post(post_as_list))
connection.close_database_connection()
return posts
def get_post_commentaries(self, logged_user_name=None):
connection = Connection()
cursor = connection.start_database_connection()
cursor.execute(
"select * from comentario where id_postagem=%s" \
" order by data desc",
[self.post_id]
)
commentaries_as_lists = cursor.fetchall()
commentaries = []
for commentary_as_list in commentaries_as_lists:
commentary = Commentary(commentary_as_list)
if not (logged_user_name) or not (Block.block_exist(
logged_user_name, commentary.author_id)):
commentaries.append(commentary)
connection.close_database_connection()
return commentaries
def create_instance(cls, follower, followed):
connection = Connection()
cursor = connection.start_database_connection()
if cls.follow_exist(follower, followed):
raise RepeatedPrimaryKeyException()
confirmation = True if not followed.privacy else False
cursor.execute(
"insert into seguimento(confirmacao, nome_seguidor, nome_seguido) values (%s, %s, %s)",
(confirmation, follower.user_name, followed.user_name))
connection.close_database_connection()
Notification.create_instance(followed.user_name,
id_follow_follower=follower.user_name,
id_follow_followed=followed.user_name)
entity_instance = Follow(
[confirmation, follower.user_name, followed.user_name])
return entity_instance
def search_users(cls, search_key, order_by=None):
connection = Connection()
cursor = connection.start_database_connection()
order_by_followers = isinstance(
order_by, str) and order_by.lower() == 'followers number'
try:
search_key = str(search_key)
search_parameter = '%' + search_key + '%'
cursor.execute(
"select * from perfil where nome_usuario like %s or nome_real like %s or biografia like %s",
[search_parameter, search_parameter, search_parameter])
users_as_list = cursor.fetchall()
all_users_informations = []
for user_as_list in users_as_list:
user_information = {'object': User(user_as_list)}
all_users_informations.append(user_information)
connection.close_database_connection()
if order_by_followers:
for user_information in all_users_informations:
user_information['followers number'] = len(
user_information['object'].get_user_followers())
all_users_informations = sorted(
all_users_informations,
key=lambda k: k['followers number'],
reverse=True)
return [
user_information['object']
for user_information in all_users_informations
]
except ValueError:
connection.close_database_connection()
raise ValueError
except Exception as e:
connection.close_database_connection()
traceback.print_exc()
raise Exception