def channel_removeowner(token, channel_id, u_id):
'''Remove ownership rights from user of a channel'''
if not Token.isValid(token):
raise AccessError("Not a valid token!")
channel_id = int(channel_id)
u_id = int(u_id)
database = db.load_DB()
if channel_id not in db.get_all_channels(database):
raise ValueError('Channel (based on ID) does not exist')
tok_u_id = db.get_from_token('u_id', token, database)
channel = db.get_channel_by_id(database, channel_id)
user = [user for user in database['users'] if user['u_id'] == tok_u_id][0]
for channel in database['channels']:
if channel['channel_id'] == channel_id:
if u_id not in channel['owner_members']:
raise ValueError('User not owner of this channel')
if tok_u_id not in channel['owner_members'] and \
db.get_from_token('permission_id', token, database) == 3:
raise AccessError('authorised user is not\
an owner of the slackr, or an owner of this channel')
channel['owner_members'].remove(u_id)
db.save_DB(database)
return {}
def channel_invite(token, channel_id, u_id):
'''Adds existing user to a new channel'''
channel_id = int(channel_id)
u_id = int(u_id)
# Raise error if invalid token
if not Token.isValid(token):
raise AccessError('Invalid Token.')
database = db.load_DB()
# Check if valid channel_id
if channel_id not in db.get_all_channels(database):
raise ValueError('Invalid Channel ID.')
# Check if authorised user is a member of the channel
channel = db.get_channel_by_id(database, channel_id)
if not db.get_from_token('u_id', token, database) in channel['members']:
raise AccessError('You are not a member of this channel so \
you cannot invite others to join.')
# Check if valid user ID for user to be adde
if u_id not in db.get_all_users(database):
raise AccessError('Invalid user id.')
if u_id in channel['members']:
raise AccessError('User already part of the channel')
database['channels'].remove(channel)
channel['members'].append(u_id)
database['channels'].append(channel)
db.save_DB(database)
return dumps({})
def channel_join(token, channel_id):
'''Join existing user to a new channel'''
if not Token.isValid(token):
raise AccessError("Not a valid token!")
channel_id = int(channel_id)
database = db.load_DB()
u_id = db.get_from_token('u_id', token, database)
if channel_id not in db.get_all_channels(database):
raise ValueError('Channel (based on ID) does not exist')
channel = db.get_channel_by_id(database, channel_id)
if not channel['is_public']:
if db.get_from_token('permission_id', token, database) not in [1, 2]:
raise AccessError('channel_id refers to a channel that is private \
(when the authorised user is not an admin)')
for channel in database['channels']:
if channel['channel_id'] == channel_id:
if not u_id in channel['members']:
channel['members'].append(u_id)
db.save_DB(database)
return {}
def channel_leave(token, channel_id):
'''Remove existing user from a channel'''
if not Token.isValid(token):
raise AccessError("Not a valid token!")
channel_id = int(channel_id)
database = db.load_DB()
if channel_id not in db.get_all_channels(database):
raise ValueError('Channel (based on ID) does not exist')
u_id = db.get_from_token('u_id', token, database)
channel = db.get_channel_by_id(database, channel_id)
for channel in database['channels']:
if channel['channel_id'] == channel_id:
if u_id in channel['members']:
channel['members'].remove(u_id)
db.save_DB(database)
return {}
def channel_details(token, channel_id):
'''Gets the details of the channel'''
if not Token.isValid(token):
raise AccessError("Not a valid token!")
database = db.load_DB()
channel_id = int(channel_id)
if channel_id not in db.get_all_channels(database):
raise ValueError('Channel ID is not a valid channel')
channel = db.get_channel_by_id(database, channel_id)
if db.get_from_token("u_id", token, database) not in channel['members']:
raise AccessError('Not authorised to view this channel')
return dumps({
"name" : channel['name'],
"all_members" : [user for user in database["users"] if user['u_id'] in channel['members']],
"owner_members" : [user for user in database["users"] if \
user['u_id'] in channel['owner_members']]
})