def add_message(conversation, request):
"""
Adds a message to a conversation
The request.actor is the one "talking", either if it was the authenticated user,
the rest username or the post body actor, in this order.
"""
try:
mobile = request.decoded_payload['object']['mobile']
except:
mobile = False
message_params = {'actor': request.actor,
'verb': 'post',
'contexts': [conversation]
}
if 'single' in message_params['contexts'][0]['tags']:
users = MADMaxCollection(request, 'users', query_key='username')
for participant in message_params['contexts'][0]['participants']:
user = users[participant['username']]
if user.getSubscription(conversation) is None:
user.addSubscription(conversation)
conversation['tags'].remove('single')
conversation.save()
notifier = RabbitNotifications(request)
notifier.add_conversation(conversation)
# Initialize a Message (Activity) object from the request
newmessage = Message.from_request(request, rest_params=message_params)
if newmessage['object']['objectType'] == u'image' or \
newmessage['object']['objectType'] == u'file':
# Extract the file before saving object
message_file = newmessage.extract_file_from_activity()
message_oid = newmessage.insert()
newmessage['_id'] = ObjectId(message_oid)
newmessage.process_file(request, message_file)
newmessage.save()
if mobile:
notifier = RabbitNotifications(request)
notifier.add_conversation_message(conversation, newmessage)
else:
message_oid = newmessage.insert()
newmessage['_id'] = message_oid
if mobile:
notifier = RabbitNotifications(request)
notifier.add_conversation_message(conversation, newmessage)
handler = JSONResourceEntity(request, newmessage.flatten(), status_code=201)
return handler.buildResponse()
def postMessage2Conversation(conversations, request):
"""
Add a new conversation
"""
# We are forced the check and extract the context of the conversation here,
# We can't initialize the activity first, because it would fail (chiken-egg stuff)
data = request.decoded_payload
ctxts = data.get('contexts', [])
if len(ctxts) == 0:
raise ValidationError('Empty contexts parameter')
request_participants = ctxts[0].get('participants', [])
if len(request_participants) == 0:
raise ValidationError('Empty participants parameter')
if len(request_participants) != len(list(set(request_participants))):
raise ValidationError('One or more users duplicated in participants list')
if len(request_participants) == 1 and request_participants[0] == request.actor['username']:
raise ValidationError('Cannot start a conversation with oneself')
if request.actor['username'] not in request_participants and not request.has_permission(add_conversation_for_others):
raise ValidationError('Actor must be part of the participants list.')
# Loop trough all participants, if there's one that doesn't exists, an exception will raise
# This check is to avoid any conversation creation if there's any invalid participant
# Also store the definitive list that will be saved in participants field
participants = {}
users = MADMaxCollection(request, 'users', query_key='username')
for participant in request_participants:
user = users[participant]
if request.actor['username'] != user['username'] and not request.actor.is_allowed_to_see(user):
raise Forbidden('User {} is not allowed to have a conversation with {}'.format(request.actor['username'], user['username']))
participants[participant] = user
# If there are only two participants in the conversation, try to get an existing conversation
# Otherwise, assume is a group conversation and create a new one
current_conversation = None
if len(request_participants) == 2:
current_conversation = conversations.first({
'objectType': 'conversation',
'participants': {
'$size': 2},
'tags': {'$not': {'$in': ['group']}},
'participants.username': {
'$all': request_participants}
})
if current_conversation and 'single' in current_conversation['tags']:
for participant in participants:
if participants[participant].getSubscription(current_conversation) is None:
participants[participant].addSubscription(current_conversation)
current_conversation['tags'].remove('single')
current_conversation.save()
if current_conversation is None:
# Initialize a conversation (context) object from the request, overriding the object using the context
conversation_params = dict(actor=request.actor,
tags=['group'] if len(participants) > 2 else [],
participants=[participant.flatten(preserve=['displayName', 'objectType', 'username']) for participant in participants.values()],
permissions={'read': 'subscribed',
'write': 'subscribed',
'subscribe': 'restricted',
'unsubscribe': 'subscribed'})
if ctxts[0].get('displayName', False):
conversation_params['displayName'] = ctxts[0]['displayName']
newconversation = Conversation.from_request(request, rest_params=conversation_params)
# New conversation
contextid = newconversation.insert()
newconversation['_id'] = contextid
# Subscribe everyone,
for user in newconversation['participants']:
db_user = participants[user['username']]
db_user.addSubscription(newconversation)
# Initialize a Subscription Activity
rest_params = {'actor': db_user,
'verb': 'subscribe',
'object': {'objectType': 'conversation',
'id': newconversation['_id'],
'participants': newconversation['participants']},
'contexts': [] # Override contexts from request
}
newactivity = Activity.from_request(request, rest_params=rest_params)
newactivity_oid = newactivity.insert() # Insert a subscribe activity
newactivity['_id'] = newactivity_oid
current_conversation = newconversation
# We need to reload the actor, in order to have the subscription updated
# We need to reload reified acl's, so then new actor subscription will be visible by __acl__
request.actor.reload()
current_conversation.reload__acl__()
message_params = {'actor': request.actor,
'contexts': [current_conversation],
'verb': 'post'}
try:
# Initialize a Message (Activity) object from the request
newmessage = Message.from_request(request, rest_params=message_params)
except Exception as catched:
# In case we coulnd't post the message, rollback conversation creation
current_conversation.delete()
raise catched
# Grant subscribe permission to the user creating the conversation, only if the conversation
# is bigger than 2 people. Conversations that are created with only 2 people from the beggining
# Will not be able to grow
if len(current_conversation['participants']) > 2:
subscription = request.actor.getSubscription(current_conversation)
request.actor.grantPermission(subscription, 'invite', permanent=False)
request.actor.grantPermission(subscription, 'kick', permanent=False)
request.actor.revokePermission(subscription, 'unsubscribe', permanent=False)
message_oid = newmessage.insert()
newmessage['_id'] = message_oid
output_message = newmessage.flatten()
output_message['contexts'][0]['displayName'] = current_conversation.realDisplayName(request.actor)
output_message['contexts'][0]['tags'] = current_conversation.get('tags', [])
# Notification is done here because we don't want to do it right after insertion
# as a possible rollback would cause a notification of a inexistent conversation
notifier = RabbitNotifications(request)
notifier.add_conversation(current_conversation)
handler = JSONResourceEntity(request, output_message, status_code=201)
return handler.buildResponse()