def send_participant_left(sender, instance, **kwargs):
"""Notify conversation participants when someone leaves"""
conversation = instance.conversation
topic = 'conversations:conversation'
# TODO send to all group members?
for subscription in ChannelSubscription.objects.recent() \
.filter(user__in=conversation.participants.all()).distinct():
participant = conversation.conversationparticipant_set.get(user=subscription.user)
payload = ConversationSerializer(participant, context={'request': MockRequest(user=subscription.user)}).data
send_in_channel(subscription.reply_channel, topic, payload)
participant = conversation.make_participant()
payload = ConversationSerializer(participant).data
for subscription in ChannelSubscription.objects.recent().filter(user=instance.user).distinct():
send_in_channel(subscription.reply_channel, topic, payload)
def retrieve_private_conversation(self, request, *args, **kwargs):
user2 = self.get_object()
try:
conversation = Conversation.objects.get_or_create_for_two_users(request.user, user2)
except Exception:
return Response(status=status.HTTP_404_NOT_FOUND, data={})
participant = conversation.conversationparticipant_set.get(user=request.user)
serializer = ConversationSerializer(participant, context=self.get_serializer_context())
return Response(serializer.data)
def send_conversation_update(sender, instance, **kwargs):
# Update conversations object for user after updating their participation
# (important for seen_up_to and unread_message_count)
participant = instance
topic = 'conversations:conversation'
payload = ConversationSerializer(participant, context={'request': MockRequest(user=participant.user)}).data
for subscription in ChannelSubscription.objects.recent().filter(user=instance.user):
send_in_channel(subscription.reply_channel, topic, payload)
def send_messages(sender, instance, created, **kwargs):
"""When there is a message in a conversation we need to send it to any subscribed participants."""
message = instance
conversation = message.conversation
topic = 'conversations:message'
for subscription in ChannelSubscription.objects.recent().filter(
user__in=conversation.participants.all()).distinct():
payload = ConversationMessageSerializer(
message, context={
'request': MockRequest(user=subscription.user)
}).data
send_in_channel(subscription.reply_channel, topic, payload)
if created and message.is_thread_reply(
) and subscription.user != message.author:
payload = ConversationMessageSerializer(
message.thread,
context={
'request': MockRequest(user=subscription.user)
}).data
send_in_channel(subscription.reply_channel, topic, payload)
# Send push notification and conversation updates when a message is created, but not when it is modified
if not created:
return
tasks.notify_message_push_subscribers(message)
# Send conversations object to participants after sending a message
# (important for unread_message_count)
# Exclude the author because their seen_up_to status gets updated,
# so they will receive the `send_conversation_update` message
topic = 'conversations:conversation'
# Can be skipped for thread replies, as they don't alter the conversations object
if message.is_thread_reply():
return
for subscription in ChannelSubscription.objects.recent()\
.filter(user__in=conversation.participants.all())\
.exclude(user=message.author).distinct():
participant = conversation.conversationparticipant_set.get(
user=subscription.user)
payload = ConversationSerializer(
participant,
context={
'request': MockRequest(user=subscription.user)
}).data
send_in_channel(subscription.reply_channel, topic, payload)
def send_participant_joined(sender, instance, created, **kwargs):
"""Notify other participants when someone joins"""
if not created:
return
conversation = instance.conversation
topic = 'conversations:conversation'
for subscription in ChannelSubscription.objects.recent() \
.filter(user__in=conversation.participants.all()) \
.exclude(user=instance.user).distinct():
participant = conversation.conversationparticipant_set.get(user=subscription.user)
payload = ConversationSerializer(participant, context={'request': MockRequest(user=subscription.user)}).data
send_in_channel(subscription.reply_channel, topic, payload)
def retrieve_conversation(self, request, *args, **kwargs):
target = self.get_object()
conversation = Conversation.objects. \
prefetch_related('conversationparticipant_set'). \
select_related('target_type'). \
get_or_create_for_target(target)
participant = conversation.conversationparticipant_set.filter(user=request.user).first()
if not participant:
if conversation.can_access(request.user):
participant = conversation.make_participant()
else:
self.permission_denied(request, message=_('You are not in this conversation'))
serializer = ConversationSerializer(participant, context=self.get_serializer_context())
return Response(serializer.data)
