def message_edit(token, message_id, message):
check_tokenlogin(token)
auser_dic = get_user_from_token(token)
# only the user who sent this message can edit the message
check_message_length(message)
m_c_dic = get_message_from_mid(message_id)
check_validmessage(m_c_dic)
message_dic = m_c_dic['message_dic']
channel_dic = m_c_dic['channel_dic']
if not helper_check_user_admin(auser_dic):
check_permission_of_message(message_dic, channel_dic,
auser_dic['u_id'])
# edit the message
# if the message is empty, delete this message
if message == '':
channel_dic['messages'].remove(message_dic)
return {}
message_dic['message'] = message
return {}
def message_pin(token, message_id):
# 1. authorise user should be in the channel
# 2. the message should be valid
# 3. the message should be unpinned
check_tokenlogin(token)
auser_dic = get_user_from_token(token)
auid = auser_dic['u_id']
m_c_dic = get_message_from_mid(message_id)
check_validmessage(m_c_dic)
message_dic = m_c_dic['message_dic']
channel_dic = m_c_dic['channel_dic']
#check if the authorise user is in the channel
check_auser_not_in_channel(auid, channel_dic['all_members'])
check_user_admin(auser_dic)
# cannot pin the message which is pinned
if message_dic['is_pinned']:
raise ValueError("Message with ID message_id is already pinned.")
message_dic['is_pinned'] = True
return {}
def message_remove(token, message_id):
check_tokenlogin(token)
auser_dic = get_user_from_token(token)
m_c_dic = get_message_from_mid(message_id)
check_validmessage(m_c_dic)
message_dic = m_c_dic['message_dic']
channel_dic = m_c_dic['channel_dic']
if not helper_check_user_admin(auser_dic):
check_permission_of_message(message_dic, channel_dic,
auser_dic['u_id'])
# remove the message
channel_dic['messages'].remove(message_dic)
return {}
def message_react(token, message_id, react_id):
# 1. authorise user should be in the channel
# 2. the message should be valid
# 3. the message should be unreacted
check_tokenlogin(token)
#get the information of the user
auser_dic = get_user_from_token(token)
auid = auser_dic['u_id']
m_c_dic = get_message_from_mid(message_id)
check_validmessage(m_c_dic)
# check if the message is valid then get the message
message_dic = m_c_dic['message_dic']
channel_dic = m_c_dic['channel_dic']
check_uid_not_in_channel(auid, channel_dic)
check_validreact(react_id)
m_reacts = message_dic['reacts']
this_react = helper_check_react_exists(m_reacts, react_id)
user_reacted = helper_is_the_user_reacted(message_dic, auid)
# if there is no this react in the message
# add a react
if not this_react:
m_reacts.append({
'react_id': react_id,
'u_ids': [auid],
'is_this_user_reacted': user_reacted
})
return {}
# if there is this react in the message
if auid in this_react['u_ids']:
raise ValueError(
"Message already contains an active React with react_id from user."
)
this_react['u_ids'].append(auid)
if not user_reacted:
this_react['is_this_user_reacted'] = True
return {}
def message_unreact(token, message_id, react_id):
# 1. authorise user should be in the channel
# 2. the message should be valid
# 3. the message should be reacted
check_tokenlogin(token)
auser_dic = get_user_from_token(token)
auid = auser_dic['u_id']
m_c_dic = get_message_from_mid(message_id)
check_validmessage(m_c_dic)
message_dic = m_c_dic['message_dic']
channel_dic = m_c_dic['channel_dic']
# when the user not in this channel
check_uid_not_in_channel(auid, channel_dic)
check_validreact(react_id)
m_reacts = message_dic['reacts']
this_react = helper_check_react_exists(m_reacts, react_id)
# when the user didn't react to this message
if not this_react or auid not in this_react['u_ids']:
raise ValueError(
"Message with message_id does not contain an active React with react_id from user."
)
user_reacted = helper_is_the_user_reacted(message_dic, auid)
this_react['u_ids'].remove(auid)
if not user_reacted:
this_react['is_this_user_reacted'] = False
return {}