discourse/plugins/chat/app/serializers/chat_channel_serializer.rb
Martin Brennan 8437081d94
FIX: Add MessageBust.last_id to chat channel subscriptions (#19255)
This commit adds variousMessageBus.last_ids to serializer payloads
for chat channels and the chat view (for chat live pane) so
we can use those IDs when subscribing to MessageBus channels
from chat.

This allows us to ensure that any messages created between the
server being hit and the UI loaded and subscribing end up being
delivered to the client, rather than just silently dropped.

This commit also fixes an issue where we were subscribing to
the new-messages and new-mentions MessageBus channels multiple
times when following/unfollowing a channel multiple times.
2022-12-02 10:57:53 +10:00

111 lines
2.5 KiB
Ruby

# frozen_string_literal: true
class ChatChannelSerializer < ApplicationSerializer
attributes :id,
:auto_join_users,
:chatable,
:chatable_id,
:chatable_type,
:chatable_url,
:description,
:title,
:slug,
:last_message_sent_at,
:status,
:archive_failed,
:archive_completed,
:archived_messages,
:total_messages,
:archive_topic_id,
:memberships_count,
:current_user_membership,
:message_bus_last_ids
def initialize(object, opts)
super(object, opts)
@current_user_membership = opts[:membership]
end
def include_description?
object.description.present?
end
def memberships_count
object.user_count
end
def chatable_url
object.chatable_url
end
def title
object.name || object.title(scope.user)
end
def chatable
case object.chatable_type
when "Category"
BasicCategorySerializer.new(object.chatable, root: false).as_json
when "DirectMessage"
DirectMessageSerializer.new(object.chatable, scope: scope, root: false).as_json
when "Site"
nil
end
end
def archive
object.chat_channel_archive
end
def include_archive_status?
scope.is_staff? && object.archived? && archive.present?
end
def archive_completed
archive.complete?
end
def archive_failed
archive.failed?
end
def archived_messages
archive.archived_messages
end
def total_messages
archive.total_messages
end
def archive_topic_id
archive.destination_topic_id
end
def include_auto_join_users?
scope.can_edit_chat_channel?
end
def current_user_membership
return if !@current_user_membership
@current_user_membership.chat_channel = object
UserChatChannelMembershipSerializer.new(
@current_user_membership,
scope: scope,
root: false,
).as_json
end
def message_bus_last_ids
{
new_messages: MessageBus.last_id("/chat/#{object.id}/new-messages"),
new_mentions: MessageBus.last_id("/chat/#{object.id}/new-mentions"),
}
end
alias_method :include_archive_topic_id?, :include_archive_status?
alias_method :include_total_messages?, :include_archive_status?
alias_method :include_archived_messages?, :include_archive_status?
alias_method :include_archive_failed?, :include_archive_status?
alias_method :include_archive_completed?, :include_archive_status?
end