def check_handle(handle_str):
userDatabase = auth.Load('User_database.pkl')
if len(handle_str) < 3 or len(handle_str) > 20:
error_raise.invalid_handle()
for i in range(len(userDatabase)):
if userDatabase[i]['handle'] == handle_str:
error_raise.existed_handle()
def check_not_owner(channel_id, u_id):
channelDatabase = auth.Load('Channel_database.pkl')
for i in range(len(channelDatabase)):
if channelDatabase[i]['channelId'] == channel_id:
if not any(d['u_id'] == int(u_id)
for d in channelDatabase[i]['owner_members']):
error_raise.not_owner()
def check_already_owner(channel_id, u_id):
channelDatabase = auth.Load('Channel_database.pkl')
for i in range(len(channelDatabase)):
if channelDatabase[i]['channelId'] == int(channel_id):
if any(d['u_id'] == u_id
for d in channelDatabase[i]['owner_members']):
error_raise.already_owner()
def check_authorized_user(token, channel_id):
channelDatabase = auth.Load('Channel_database.pkl')
for i in range(len(channelDatabase)):
if int(channel_id) == channelDatabase[i]['channelId']:
u_id = find_id_from_token(token)
if not any(d['u_id'] == u_id
for d in channelDatabase[i]['all_members']):
error_raise.invalid_member()
def check_channel_id(channel_id):
channelDatabase = auth.Load('Channel_database.pkl')
flag = 0
for i in range(len(channelDatabase)):
if int(channel_id) == channelDatabase[i]['channelId']:
flag = 1
if flag == 0:
error_raise.invalid_channelid()
def check_invalid_user(u_id):
userDatabase = auth.Load('User_database.pkl')
flag = 0
for i in range(len(userDatabase)):
if userDatabase[i]['u_id'] == int(u_id):
flag = 1
return i
if flag == 0:
error_raise.invalid_user()
def check_not_autho_join(token, channel_id):
channelDatabase = auth.Load('Channel_database.pkl')
permission = find_permission_from_token(token)
for i in range(len(channelDatabase)):
if channelDatabase[i]['channelId'] == int(
channel_id
) and channelDatabase[i]['is_public'] == "False" and (int(permission)
!= 1):
error_raise.private_channel()
def check_not_autho_add(token, channel_id):
permission = find_permission_from_token(token)
u_id = find_id_from_token(token)
channelDatabase = auth.Load('Channel_database.pkl')
for i in range(len(channelDatabase)):
if channelDatabase[i]['channelId'] == int(channel_id):
if (int(permission) != 1) and (not any(
d['u_id'] == int(u_id)
for d in channelDatabase[i]['owner_members'])):
error_raise.unable_to_operate()
def check_email_nonexisted(email):
userDatabase = auth.Load('User_database.pkl')
index = 0
flag = 0
for i in range(len(userDatabase)):
if str(email) == str(userDatabase[i]['email']):
index = i
flag = 1
if flag == 0:
error_raise.not_registered_email()
return index
def create_messageid(channel_id, message):
messageDatabase = auth.Load('Message_database.pkl')
id = 0
if len(messageDatabase) == 0:
created_mid = 100001
else:
for i in range(len(messageDatabase)):
id = int(messageDatabase[i]['message_id'])
created_mid = id + 1
return created_mid
def check_user_existed(u_id):
userDatabase = auth.Load('User_database.pkl')
if not any(d['u_id'] == int(u_id) for d in userDatabase):
error_raise.invalid_user()
def check_email_existed(email):
userDatabase = auth.Load('User_database.pkl')
for i in range(len(userDatabase)):
if str(email) == str(userDatabase[i]['email']):
error_raise.existed_email()
return
def check_channel_name(name):
channelDatabase = auth.Load('Channel_database.pkl')
if any(d['channelName'] == name for d in channelDatabase):
error_raise.channelname_exist()
def find_user_permission(token):
userDatabase = auth.Load('User_database.pkl')
for i in range(len(userDatabase)):
if userDatabase[i]['token'] == token:
return userDatabase[i]['permission']
def find_id_from_token(token):
userDatabase = auth.Load('User_database.pkl')
for i in range(len(userDatabase)):
if userDatabase[i]['token'] == token:
u_id = userDatabase[i]['u_id']
return u_id
