Restructure omni services and add Chatwoot research snapshot

research/chatwoot/app/channels/application_cable/channel.rb

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+class ApplicationCable::Channel < ActionCable::Channel::Base
+end

research/chatwoot/app/channels/application_cable/connection.rb

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+class ApplicationCable::Connection < ActionCable::Connection::Base
+end

research/chatwoot/app/channels/room_channel.rb

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+class RoomChannel < ApplicationCable::Channel
+  def subscribed
+    # TODO: should we only do ensure stream  if current account is present?
+    # for now going ahead with guard clauses in update_subscription and broadcast_presence
+    current_user
+    current_account
+    ensure_stream
+    update_subscription
+    broadcast_presence
+  end
+
+  def update_presence
+    update_subscription
+    broadcast_presence
+  end
+
+  private
+
+  def broadcast_presence
+    return if @current_account.blank?
+
+    data = { account_id: @current_account.id, users: ::OnlineStatusTracker.get_available_users(@current_account.id) }
+    data[:contacts] = ::OnlineStatusTracker.get_available_contacts(@current_account.id) if @current_user.is_a? User
+    ActionCable.server.broadcast(pubsub_token, { event: 'presence.update', data: data })
+  end
+
+  def ensure_stream
+    stream_from pubsub_token
+    stream_from "account_#{@current_account.id}" if @current_account.present? && @current_user.is_a?(User)
+  end
+
+  def update_subscription
+    return if @current_account.blank?
+
+    ::OnlineStatusTracker.update_presence(@current_account.id, @current_user.class.name, @current_user.id)
+  end
+
+  def pubsub_token
+    @pubsub_token ||= params[:pubsub_token]
+  end
+
+  def current_user
+    @current_user ||= if params[:user_id].blank?
+                        ContactInbox.find_by!(pubsub_token: pubsub_token).contact
+                      else
+                        User.find_by!(pubsub_token: pubsub_token, id: params[:user_id])
+                      end
+  end
+
+  def current_account
+    return if current_user.blank?
+
+    @current_account ||= if @current_user.is_a? Contact
+                           @current_user.account
+                         else
+                           @current_user.accounts.find(params[:account_id])
+                         end
+  end
+end