feat: add assignment service

app/models/concerns/auto_assignment_handler.rb

@@ -14,7 +14,13 @@ module AutoAssignmentHandler
     return unless conversation_status_changed_to_open?
     return unless should_run_auto_assignment?
 
-    ::AutoAssignment::AgentAssignmentService.new(conversation: self, allowed_agent_ids: inbox.member_ids_with_assignment_capacity).perform
+    if inbox.auto_assignment_enabled?
+      # Use new assignment system
+      AutoAssignment::AssignmentJob.perform_later(inbox_id: inbox.id)
+    else
+      # Use legacy assignment system
+      AutoAssignment::AgentAssignmentService.new(conversation: self, allowed_agent_ids: inbox.member_ids_with_assignment_capacity).perform
+    end
   end
 
   def should_run_auto_assignment?

app/models/concerns/inbox_agent_availability.rb

@@ -0,0 +1,28 @@
+module InboxAgentAvailability
+  extend ActiveSupport::Concern
+
+  def available_agents
+    online_agent_ids = fetch_online_agent_ids
+    return inbox_members.none if online_agent_ids.empty?
+
+    inbox_members
+      .joins(:user)
+      .where(users: { id: online_agent_ids })
+      .includes(:user)
+  end
+
+  def member_ids_with_assignment_capacity
+    member_ids
+  end
+
+  private
+
+  def fetch_online_agent_ids
+    OnlineStatusTracker.get_available_users(account_id)
+                       .select { |_key, value| value.eql?('online') }
+                       .keys
+                       .map(&:to_i)
+  end
+end
+
+InboxAgentAvailability.prepend_mod_with('InboxAgentAvailability')

app/models/inbox.rb

@@ -44,6 +44,7 @@ class Inbox < ApplicationRecord
   include Avatarable
   include OutOfOffisable
   include AccountCacheRevalidator
+  include InboxAgentAvailability
 
   # Not allowing characters:
   validates :name, presence: true
@@ -190,6 +191,10 @@ class Inbox < ApplicationRecord
     members.ids
   end
 
+  def auto_assignment_enabled?
+    account.feature_enabled?('assignment_v2') && assignment_policy.present? && assignment_policy.enabled?
+  end
+
   private
 
   def default_name_for_blank_name